| Age | Commit message (Collapse) | Author | Files | Lines |
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[ Upstream commit 10f966bbf521bb9b2e497bbca496a5141f4071d0 ]
f2fs uses EFAULT as error number to indicate filesystem is corrupted
all the time, but generic filesystems use EUCLEAN for such condition,
we need to change to follow others.
This patch adds two new macros as below to wrap more generic error
code macros, and spread them in code.
EFSBADCRC EBADMSG /* Bad CRC detected */
EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 546d22f070d64a7b96f57c93333772085d3a5e6d ]
As Jungyeon reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=203217
- Overview
When mounting the attached crafted image and running program, I got this error.
Additionally, it hangs on sync after running the program.
The image is intentionally fuzzed from a normal f2fs image for testing and I enabled option CONFIG_F2FS_CHECK_FS on.
- Reproduces
cc poc_test_05.c
mkdir test
mount -t f2fs tmp.img test
sudo ./a.out
sync
- Messages
kernel BUG at fs/f2fs/inode.c:707!
RIP: 0010:f2fs_evict_inode+0x33f/0x3a0
Call Trace:
evict+0xba/0x180
f2fs_iget+0x598/0xdf0
f2fs_lookup+0x136/0x320
__lookup_slow+0x92/0x140
lookup_slow+0x30/0x50
walk_component+0x1c1/0x350
path_lookupat+0x62/0x200
filename_lookup+0xb3/0x1a0
do_readlinkat+0x56/0x110
__x64_sys_readlink+0x16/0x20
do_syscall_64+0x43/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
During inode loading, __recover_inline_status() can recovery inode status
and set inode dirty, once we failed in following process, it will fail
the check in f2fs_evict_inode, result in trigger BUG_ON().
Let's clear dirty inode in error path of f2fs_iget() to avoid panic.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 91291e9998d208370eb8156c760691b873bd7522 upstream.
This patch adds f2fs_is_valid_blkaddr() in below functions to do sanity
check with block address to avoid pentential panic:
- f2fs_grab_read_bio()
- __written_first_block()
https://bugzilla.kernel.org/show_bug.cgi?id=200465
- Reproduce
- POC (poc.c)
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/falloc.h>
#include <linux/loop.h>
static void activity(char *mpoint) {
char *xattr;
int err;
err = asprintf(&xattr, "%s/foo/bar/xattr", mpoint);
char buf2[113];
memset(buf2, 0, sizeof(buf2));
listxattr(xattr, buf2, sizeof(buf2));
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- kernel message
[ 844.718738] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 846.430929] F2FS-fs (loop0): access invalid blkaddr:1024
[ 846.431058] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.431059] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.431310] CPU: 1 PID: 1249 Comm: a.out Not tainted 4.18.0-rc3+ #1
[ 846.431312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.431315] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.431316] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00
[ 846.431347] RSP: 0018:ffff961c414a7bc0 EFLAGS: 00010282
[ 846.431349] RAX: 0000000000000000 RBX: ffffc5f787b8ea80 RCX: 0000000000000000
[ 846.431350] RDX: 0000000000000000 RSI: ffff89dfffd165d8 RDI: ffff89dfffd165d8
[ 846.431351] RBP: ffff961c414a7c20 R08: 0000000000000001 R09: 0000000000000248
[ 846.431353] R10: 0000000000000000 R11: 0000000000000248 R12: 0000000000000007
[ 846.431369] R13: ffff89dff5492800 R14: ffff89dfae3aa000 R15: ffff89dff4ff88d0
[ 846.431372] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000
[ 846.431373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.431374] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0
[ 846.431384] Call Trace:
[ 846.431426] f2fs_iget+0x6f4/0xe70
[ 846.431430] ? f2fs_find_entry+0x71/0x90
[ 846.431432] f2fs_lookup+0x1aa/0x390
[ 846.431452] __lookup_slow+0x97/0x150
[ 846.431459] lookup_slow+0x35/0x50
[ 846.431462] walk_component+0x1c6/0x470
[ 846.431479] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.431488] ? page_add_file_rmap+0x13/0x200
[ 846.431491] path_lookupat+0x76/0x230
[ 846.431501] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.431504] filename_lookup+0xb8/0x1a0
[ 846.431534] ? _cond_resched+0x16/0x40
[ 846.431541] ? kmem_cache_alloc+0x160/0x1d0
[ 846.431549] ? path_listxattr+0x41/0xa0
[ 846.431551] path_listxattr+0x41/0xa0
[ 846.431570] do_syscall_64+0x55/0x100
[ 846.431583] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.431607] RIP: 0033:0x7f882de1c0d7
[ 846.431607] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.431639] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2
[ 846.431641] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7
[ 846.431642] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0
[ 846.431643] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000
[ 846.431645] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550
[ 846.431646] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000
[ 846.431648] ---[ end trace abca54df39d14f5c ]---
[ 846.431651] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix.
[ 846.431762] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_iget+0xd17/0xe70
[ 846.431763] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.431797] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.431798] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.431800] RIP: 0010:f2fs_iget+0xd17/0xe70
[ 846.431801] Code: ff ff 48 63 d8 e9 e1 f6 ff ff 48 8b 45 c8 41 b8 05 00 00 00 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b 48 8b 38 e8 f9 b4 00 00 <0f> 0b 48 8b 45 c8 f0 80 48 48 04 e9 d8 f9 ff ff 0f 0b 48 8b 43 18
[ 846.431832] RSP: 0018:ffff961c414a7bd0 EFLAGS: 00010282
[ 846.431834] RAX: 0000000000000000 RBX: ffffc5f787b8ea80 RCX: 0000000000000006
[ 846.431835] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff89dfffd165d0
[ 846.431836] RBP: ffff961c414a7c20 R08: 0000000000000000 R09: 0000000000000273
[ 846.431837] R10: 0000000000000000 R11: ffff89dfad50ca60 R12: 0000000000000007
[ 846.431838] R13: ffff89dff5492800 R14: ffff89dfae3aa000 R15: ffff89dff4ff88d0
[ 846.431840] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000
[ 846.431841] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.431842] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0
[ 846.431846] Call Trace:
[ 846.431850] ? f2fs_find_entry+0x71/0x90
[ 846.431853] f2fs_lookup+0x1aa/0x390
[ 846.431856] __lookup_slow+0x97/0x150
[ 846.431858] lookup_slow+0x35/0x50
[ 846.431874] walk_component+0x1c6/0x470
[ 846.431878] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.431880] ? page_add_file_rmap+0x13/0x200
[ 846.431882] path_lookupat+0x76/0x230
[ 846.431884] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.431886] filename_lookup+0xb8/0x1a0
[ 846.431890] ? _cond_resched+0x16/0x40
[ 846.431891] ? kmem_cache_alloc+0x160/0x1d0
[ 846.431894] ? path_listxattr+0x41/0xa0
[ 846.431896] path_listxattr+0x41/0xa0
[ 846.431898] do_syscall_64+0x55/0x100
[ 846.431901] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.431902] RIP: 0033:0x7f882de1c0d7
[ 846.431903] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.431934] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2
[ 846.431936] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7
[ 846.431937] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0
[ 846.431939] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000
[ 846.431940] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550
[ 846.431941] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000
[ 846.431943] ---[ end trace abca54df39d14f5d ]---
[ 846.432033] F2FS-fs (loop0): access invalid blkaddr:1024
[ 846.432051] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.432051] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.432085] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.432086] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.432089] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.432089] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00
[ 846.432120] RSP: 0018:ffff961c414a7900 EFLAGS: 00010286
[ 846.432122] RAX: 0000000000000000 RBX: 0000000000000400 RCX: 0000000000000006
[ 846.432123] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff89dfffd165d0
[ 846.432124] RBP: ffff89dff5492800 R08: 0000000000000001 R09: 000000000000029d
[ 846.432125] R10: ffff961c414a7820 R11: 000000000000029d R12: 0000000000000400
[ 846.432126] R13: 0000000000000000 R14: ffff89dff4ff88d0 R15: 0000000000000000
[ 846.432128] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000
[ 846.432130] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.432131] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0
[ 846.432135] Call Trace:
[ 846.432151] f2fs_wait_on_block_writeback+0x20/0x110
[ 846.432158] f2fs_grab_read_bio+0xbc/0xe0
[ 846.432161] f2fs_submit_page_read+0x21/0x280
[ 846.432163] f2fs_get_read_data_page+0xb7/0x3c0
[ 846.432165] f2fs_get_lock_data_page+0x29/0x1e0
[ 846.432167] f2fs_get_new_data_page+0x148/0x550
[ 846.432170] f2fs_add_regular_entry+0x1d2/0x550
[ 846.432178] ? __switch_to+0x12f/0x460
[ 846.432181] f2fs_add_dentry+0x6a/0xd0
[ 846.432184] f2fs_do_add_link+0xe9/0x140
[ 846.432186] __recover_dot_dentries+0x260/0x280
[ 846.432189] f2fs_lookup+0x343/0x390
[ 846.432193] __lookup_slow+0x97/0x150
[ 846.432195] lookup_slow+0x35/0x50
[ 846.432208] walk_component+0x1c6/0x470
[ 846.432212] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.432215] ? page_add_file_rmap+0x13/0x200
[ 846.432217] path_lookupat+0x76/0x230
[ 846.432219] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.432221] filename_lookup+0xb8/0x1a0
[ 846.432224] ? _cond_resched+0x16/0x40
[ 846.432226] ? kmem_cache_alloc+0x160/0x1d0
[ 846.432228] ? path_listxattr+0x41/0xa0
[ 846.432230] path_listxattr+0x41/0xa0
[ 846.432233] do_syscall_64+0x55/0x100
[ 846.432235] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.432237] RIP: 0033:0x7f882de1c0d7
[ 846.432237] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.432269] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2
[ 846.432271] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7
[ 846.432272] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0
[ 846.432273] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000
[ 846.432274] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550
[ 846.432275] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000
[ 846.432277] ---[ end trace abca54df39d14f5e ]---
[ 846.432279] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix.
[ 846.432376] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_wait_on_block_writeback+0xb1/0x110
[ 846.432376] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.432410] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.432411] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.432413] RIP: 0010:f2fs_wait_on_block_writeback+0xb1/0x110
[ 846.432414] Code: 66 90 f0 ff 4b 34 74 59 5b 5d c3 48 8b 7d 00 41 b8 05 00 00 00 89 d9 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b e8 df bc fd ff <0f> 0b f0 80 4d 48 04 e9 67 ff ff ff 48 8b 03 48 c1 e8 37 83 e0 07
[ 846.432445] RSP: 0018:ffff961c414a7910 EFLAGS: 00010286
[ 846.432447] RAX: 0000000000000000 RBX: 0000000000000400 RCX: 0000000000000006
[ 846.432448] RDX: 0000000000000000 RSI: 0000000000000092 RDI: ffff89dfffd165d0
[ 846.432449] RBP: ffff89dff5492800 R08: 0000000000000000 R09: 00000000000002d1
[ 846.432450] R10: ffff961c414a7820 R11: ffff89dfad50cf80 R12: 0000000000000400
[ 846.432451] R13: 0000000000000000 R14: ffff89dff4ff88d0 R15: 0000000000000000
[ 846.432453] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000
[ 846.432454] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.432455] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0
[ 846.432459] Call Trace:
[ 846.432463] f2fs_grab_read_bio+0xbc/0xe0
[ 846.432464] f2fs_submit_page_read+0x21/0x280
[ 846.432466] f2fs_get_read_data_page+0xb7/0x3c0
[ 846.432468] f2fs_get_lock_data_page+0x29/0x1e0
[ 846.432470] f2fs_get_new_data_page+0x148/0x550
[ 846.432473] f2fs_add_regular_entry+0x1d2/0x550
[ 846.432475] ? __switch_to+0x12f/0x460
[ 846.432477] f2fs_add_dentry+0x6a/0xd0
[ 846.432480] f2fs_do_add_link+0xe9/0x140
[ 846.432483] __recover_dot_dentries+0x260/0x280
[ 846.432485] f2fs_lookup+0x343/0x390
[ 846.432488] __lookup_slow+0x97/0x150
[ 846.432490] lookup_slow+0x35/0x50
[ 846.432505] walk_component+0x1c6/0x470
[ 846.432509] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.432511] ? page_add_file_rmap+0x13/0x200
[ 846.432513] path_lookupat+0x76/0x230
[ 846.432515] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.432517] filename_lookup+0xb8/0x1a0
[ 846.432520] ? _cond_resched+0x16/0x40
[ 846.432522] ? kmem_cache_alloc+0x160/0x1d0
[ 846.432525] ? path_listxattr+0x41/0xa0
[ 846.432526] path_listxattr+0x41/0xa0
[ 846.432529] do_syscall_64+0x55/0x100
[ 846.432531] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.432533] RIP: 0033:0x7f882de1c0d7
[ 846.432533] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.432565] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2
[ 846.432567] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7
[ 846.432568] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0
[ 846.432569] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000
[ 846.432570] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550
[ 846.432571] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000
[ 846.432573] ---[ end trace abca54df39d14f5f ]---
[ 846.434280] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[ 846.434424] PGD 80000001ebd3a067 P4D 80000001ebd3a067 PUD 1eb1ae067 PMD 0
[ 846.434551] Oops: 0000 [#1] SMP PTI
[ 846.434697] CPU: 0 PID: 44 Comm: kworker/u5:0 Tainted: G W 4.18.0-rc3+ #1
[ 846.434805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.435000] Workqueue: fscrypt_read_queue decrypt_work
[ 846.435174] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0
[ 846.435351] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24
[ 846.435696] RSP: 0018:ffff961c40f9bd60 EFLAGS: 00010206
[ 846.435870] RAX: 0000000000000000 RBX: ffffc5f787719b80 RCX: ffffc5f787719b80
[ 846.436051] RDX: ffffffff8b9f4b88 RSI: ffffffff8b0ae622 RDI: ffff961c40f9bdb8
[ 846.436261] RBP: 0000000000001000 R08: ffffc5f787719b80 R09: 0000000000001000
[ 846.436433] R10: 0000000000000018 R11: fefefefefefefeff R12: ffffc5f787719b80
[ 846.436562] R13: ffffc5f787719b80 R14: ffff89dff4ff88d0 R15: 0ffff89dfaddee60
[ 846.436658] FS: 0000000000000000(0000) GS:ffff89dfffc00000(0000) knlGS:0000000000000000
[ 846.436758] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.436898] CR2: 0000000000000008 CR3: 00000001eddd0000 CR4: 00000000000006f0
[ 846.437001] Call Trace:
[ 846.437181] ? check_preempt_wakeup+0xf2/0x230
[ 846.437276] ? check_preempt_curr+0x7c/0x90
[ 846.437370] fscrypt_decrypt_page+0x48/0x4d
[ 846.437466] __fscrypt_decrypt_bio+0x5b/0x90
[ 846.437542] decrypt_work+0x12/0x20
[ 846.437651] process_one_work+0x15e/0x3d0
[ 846.437740] worker_thread+0x4c/0x440
[ 846.437848] kthread+0xf8/0x130
[ 846.437938] ? rescuer_thread+0x350/0x350
[ 846.438022] ? kthread_associate_blkcg+0x90/0x90
[ 846.438117] ret_from_fork+0x35/0x40
[ 846.438201] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.438653] CR2: 0000000000000008
[ 846.438713] ---[ end trace abca54df39d14f60 ]---
[ 846.438796] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0
[ 846.438844] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24
[ 846.439084] RSP: 0018:ffff961c40f9bd60 EFLAGS: 00010206
[ 846.439176] RAX: 0000000000000000 RBX: ffffc5f787719b80 RCX: ffffc5f787719b80
[ 846.440927] RDX: ffffffff8b9f4b88 RSI: ffffffff8b0ae622 RDI: ffff961c40f9bdb8
[ 846.442083] RBP: 0000000000001000 R08: ffffc5f787719b80 R09: 0000000000001000
[ 846.443284] R10: 0000000000000018 R11: fefefefefefefeff R12: ffffc5f787719b80
[ 846.444448] R13: ffffc5f787719b80 R14: ffff89dff4ff88d0 R15: 0ffff89dfaddee60
[ 846.445558] FS: 0000000000000000(0000) GS:ffff89dfffc00000(0000) knlGS:0000000000000000
[ 846.446687] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 846.447796] CR2: 0000000000000008 CR3: 00000001eddd0000 CR4: 00000000000006f0
- Location
https://elixir.bootlin.com/linux/v4.18-rc4/source/fs/crypto/crypto.c#L149
struct crypto_skcipher *tfm = ci->ci_ctfm;
Here ci can be NULL
Note that this issue maybe require CONFIG_F2FS_FS_ENCRYPTION=y to reproduce.
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[bwh: Backported to 4.14: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit 18dd6470c2d14d10f5a2dd926925dc80dbd3abfd upstream.
If inode.i_extra_isize was fuzzed to an abnormal value, when
calculating inline data size, the result will overflow, result
in accessing invalid memory area when operating inline data.
Let's do sanity check with i_extra_isize during inode loading
for fixing.
https://bugzilla.kernel.org/show_bug.cgi?id=200421
- Reproduce
- POC (poc.c)
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/falloc.h>
#include <linux/loop.h>
static void activity(char *mpoint) {
char *foo_bar_baz;
char *foo_baz;
char *xattr;
int err;
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
err = asprintf(&foo_baz, "%s/foo/baz", mpoint);
err = asprintf(&xattr, "%s/foo/bar/xattr", mpoint);
rename(foo_bar_baz, foo_baz);
char buf2[113];
memset(buf2, 0, sizeof(buf2));
listxattr(xattr, buf2, sizeof(buf2));
removexattr(xattr, "user.mime_type");
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel message
Umount the image will leave the following message
[ 2910.995489] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 2918.416465] ==================================================================
[ 2918.416807] BUG: KASAN: slab-out-of-bounds in f2fs_iget+0xcb9/0x1a80
[ 2918.417009] Read of size 4 at addr ffff88018efc2068 by task a.out/1229
[ 2918.417311] CPU: 1 PID: 1229 Comm: a.out Not tainted 4.17.0+ #1
[ 2918.417314] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 2918.417323] Call Trace:
[ 2918.417366] dump_stack+0x71/0xab
[ 2918.417401] print_address_description+0x6b/0x290
[ 2918.417407] kasan_report+0x28e/0x390
[ 2918.417411] ? f2fs_iget+0xcb9/0x1a80
[ 2918.417415] f2fs_iget+0xcb9/0x1a80
[ 2918.417422] ? f2fs_lookup+0x2e7/0x580
[ 2918.417425] f2fs_lookup+0x2e7/0x580
[ 2918.417433] ? __recover_dot_dentries+0x400/0x400
[ 2918.417447] ? legitimize_path.isra.29+0x5a/0xa0
[ 2918.417453] __lookup_slow+0x11c/0x220
[ 2918.417457] ? may_delete+0x2a0/0x2a0
[ 2918.417475] ? deref_stack_reg+0xe0/0xe0
[ 2918.417479] ? __lookup_hash+0xb0/0xb0
[ 2918.417483] lookup_slow+0x3e/0x60
[ 2918.417488] walk_component+0x3ac/0x990
[ 2918.417492] ? generic_permission+0x51/0x1e0
[ 2918.417495] ? inode_permission+0x51/0x1d0
[ 2918.417499] ? pick_link+0x3e0/0x3e0
[ 2918.417502] ? link_path_walk+0x4b1/0x770
[ 2918.417513] ? _raw_spin_lock_irqsave+0x25/0x50
[ 2918.417518] ? walk_component+0x990/0x990
[ 2918.417522] ? path_init+0x2e6/0x580
[ 2918.417526] path_lookupat+0x13f/0x430
[ 2918.417531] ? trailing_symlink+0x3a0/0x3a0
[ 2918.417534] ? do_renameat2+0x270/0x7b0
[ 2918.417538] ? __kasan_slab_free+0x14c/0x190
[ 2918.417541] ? do_renameat2+0x270/0x7b0
[ 2918.417553] ? kmem_cache_free+0x85/0x1e0
[ 2918.417558] ? do_renameat2+0x270/0x7b0
[ 2918.417563] filename_lookup+0x13c/0x280
[ 2918.417567] ? filename_parentat+0x2b0/0x2b0
[ 2918.417572] ? kasan_unpoison_shadow+0x31/0x40
[ 2918.417575] ? kasan_kmalloc+0xa6/0xd0
[ 2918.417593] ? strncpy_from_user+0xaa/0x1c0
[ 2918.417598] ? getname_flags+0x101/0x2b0
[ 2918.417614] ? path_listxattr+0x87/0x110
[ 2918.417619] path_listxattr+0x87/0x110
[ 2918.417623] ? listxattr+0xc0/0xc0
[ 2918.417637] ? mm_fault_error+0x1b0/0x1b0
[ 2918.417654] do_syscall_64+0x73/0x160
[ 2918.417660] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2918.417676] RIP: 0033:0x7f2f3a3480d7
[ 2918.417677] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 2918.417732] RSP: 002b:00007fff4095b7d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000c2
[ 2918.417744] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2f3a3480d7
[ 2918.417746] RDX: 0000000000000071 RSI: 00007fff4095b810 RDI: 000000000126a0c0
[ 2918.417749] RBP: 00007fff4095b890 R08: 000000000126a010 R09: 0000000000000000
[ 2918.417751] R10: 00000000000001ab R11: 0000000000000206 R12: 00000000004005e0
[ 2918.417753] R13: 00007fff4095b990 R14: 0000000000000000 R15: 0000000000000000
[ 2918.417853] Allocated by task 329:
[ 2918.418002] kasan_kmalloc+0xa6/0xd0
[ 2918.418007] kmem_cache_alloc+0xc8/0x1e0
[ 2918.418023] mempool_init_node+0x194/0x230
[ 2918.418027] mempool_init+0x12/0x20
[ 2918.418042] bioset_init+0x2bd/0x380
[ 2918.418052] blk_alloc_queue_node+0xe9/0x540
[ 2918.418075] dm_create+0x2c0/0x800
[ 2918.418080] dev_create+0xd2/0x530
[ 2918.418083] ctl_ioctl+0x2a3/0x5b0
[ 2918.418087] dm_ctl_ioctl+0xa/0x10
[ 2918.418092] do_vfs_ioctl+0x13e/0x8c0
[ 2918.418095] ksys_ioctl+0x66/0x70
[ 2918.418098] __x64_sys_ioctl+0x3d/0x50
[ 2918.418102] do_syscall_64+0x73/0x160
[ 2918.418106] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2918.418204] Freed by task 0:
[ 2918.418301] (stack is not available)
[ 2918.418521] The buggy address belongs to the object at ffff88018efc0000
which belongs to the cache biovec-max of size 8192
[ 2918.418894] The buggy address is located 104 bytes to the right of
8192-byte region [ffff88018efc0000, ffff88018efc2000)
[ 2918.419257] The buggy address belongs to the page:
[ 2918.419431] page:ffffea00063bf000 count:1 mapcount:0 mapping:ffff8801f2242540 index:0x0 compound_mapcount: 0
[ 2918.419702] flags: 0x17fff8000008100(slab|head)
[ 2918.419879] raw: 017fff8000008100 dead000000000100 dead000000000200 ffff8801f2242540
[ 2918.420101] raw: 0000000000000000 0000000000030003 00000001ffffffff 0000000000000000
[ 2918.420322] page dumped because: kasan: bad access detected
[ 2918.420599] Memory state around the buggy address:
[ 2918.420764] ffff88018efc1f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.420975] ffff88018efc1f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.421194] >ffff88018efc2000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 2918.421406] ^
[ 2918.421627] ffff88018efc2080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 2918.421838] ffff88018efc2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.422046] ==================================================================
[ 2918.422264] Disabling lock debugging due to kernel taint
[ 2923.901641] BUG: unable to handle kernel paging request at ffff88018f0db000
[ 2923.901884] PGD 22226a067 P4D 22226a067 PUD 222273067 PMD 18e642063 PTE 800000018f0db061
[ 2923.902120] Oops: 0003 [#1] SMP KASAN PTI
[ 2923.902274] CPU: 1 PID: 1231 Comm: umount Tainted: G B 4.17.0+ #1
[ 2923.902490] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 2923.902761] RIP: 0010:__memset+0x24/0x30
[ 2923.902906] Code: 90 90 90 90 90 90 66 66 90 66 90 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3
[ 2923.903446] RSP: 0018:ffff88018ddf7ae0 EFLAGS: 00010206
[ 2923.903622] RAX: 0000000000000000 RBX: ffff8801d549d888 RCX: 1ffffffffffdaffb
[ 2923.903833] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88018f0daffc
[ 2923.904062] RBP: ffff88018efc206c R08: 1ffff10031df840d R09: ffff88018efc206c
[ 2923.904273] R10: ffffffffffffe1ee R11: ffffed0031df65fa R12: 0000000000000000
[ 2923.904485] R13: ffff8801d549dc98 R14: 00000000ffffc3db R15: ffffea00063bec80
[ 2923.904693] FS: 00007fa8b2f8a840(0000) GS:ffff8801f3b00000(0000) knlGS:0000000000000000
[ 2923.904937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2923.910080] CR2: ffff88018f0db000 CR3: 000000018f892000 CR4: 00000000000006e0
[ 2923.914930] Call Trace:
[ 2923.919724] f2fs_truncate_inline_inode+0x114/0x170
[ 2923.924487] f2fs_truncate_blocks+0x11b/0x7c0
[ 2923.929178] ? f2fs_truncate_data_blocks+0x10/0x10
[ 2923.933834] ? dqget+0x670/0x670
[ 2923.938437] ? f2fs_destroy_extent_tree+0xd6/0x270
[ 2923.943107] ? __radix_tree_lookup+0x2f/0x150
[ 2923.947772] f2fs_truncate+0xd4/0x1a0
[ 2923.952491] f2fs_evict_inode+0x5ab/0x610
[ 2923.957204] evict+0x15f/0x280
[ 2923.961898] __dentry_kill+0x161/0x250
[ 2923.966634] shrink_dentry_list+0xf3/0x250
[ 2923.971897] shrink_dcache_parent+0xa9/0x100
[ 2923.976561] ? shrink_dcache_sb+0x1f0/0x1f0
[ 2923.981177] ? wait_for_completion+0x8a/0x210
[ 2923.985781] ? migrate_swap_stop+0x2d0/0x2d0
[ 2923.990332] do_one_tree+0xe/0x40
[ 2923.994735] shrink_dcache_for_umount+0x3a/0xa0
[ 2923.999077] generic_shutdown_super+0x3e/0x1c0
[ 2924.003350] kill_block_super+0x4b/0x70
[ 2924.007619] deactivate_locked_super+0x65/0x90
[ 2924.011812] cleanup_mnt+0x5c/0xa0
[ 2924.015995] task_work_run+0xce/0xf0
[ 2924.020174] exit_to_usermode_loop+0x115/0x120
[ 2924.024293] do_syscall_64+0x12f/0x160
[ 2924.028479] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2924.032709] RIP: 0033:0x7fa8b2868487
[ 2924.036888] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48
[ 2924.045750] RSP: 002b:00007ffc39824d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 2924.050190] RAX: 0000000000000000 RBX: 00000000008ea030 RCX: 00007fa8b2868487
[ 2924.054604] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00000000008f4360
[ 2924.058940] RBP: 00000000008f4360 R08: 0000000000000000 R09: 0000000000000014
[ 2924.063186] R10: 00000000000006b2 R11: 0000000000000246 R12: 00007fa8b2d7183c
[ 2924.067418] R13: 0000000000000000 R14: 00000000008ea210 R15: 00007ffc39824fe0
[ 2924.071534] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer joydev input_leds serio_raw snd soundcore mac_hid i2c_piix4 ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear 8139too qxl ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel psmouse aes_x86_64 8139cp crypto_simd cryptd mii glue_helper pata_acpi floppy
[ 2924.098044] CR2: ffff88018f0db000
[ 2924.102520] ---[ end trace a8e0d899985faf31 ]---
[ 2924.107012] RIP: 0010:__memset+0x24/0x30
[ 2924.111448] Code: 90 90 90 90 90 90 66 66 90 66 90 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3
[ 2924.120724] RSP: 0018:ffff88018ddf7ae0 EFLAGS: 00010206
[ 2924.125312] RAX: 0000000000000000 RBX: ffff8801d549d888 RCX: 1ffffffffffdaffb
[ 2924.129931] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88018f0daffc
[ 2924.134537] RBP: ffff88018efc206c R08: 1ffff10031df840d R09: ffff88018efc206c
[ 2924.139175] R10: ffffffffffffe1ee R11: ffffed0031df65fa R12: 0000000000000000
[ 2924.143825] R13: ffff8801d549dc98 R14: 00000000ffffc3db R15: ffffea00063bec80
[ 2924.148500] FS: 00007fa8b2f8a840(0000) GS:ffff8801f3b00000(0000) knlGS:0000000000000000
[ 2924.153247] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2924.158003] CR2: ffff88018f0db000 CR3: 000000018f892000 CR4: 00000000000006e0
[ 2924.164641] BUG: Bad rss-counter state mm:00000000fa04621e idx:0 val:4
[ 2924.170007] BUG: Bad rss-counter
tate mm:00000000fa04621e idx:1 val:2
- Location
https://elixir.bootlin.com/linux/v4.18-rc3/source/fs/f2fs/inline.c#L78
memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
Here the length can be negative.
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[bwh: Backported to 4.14: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit c9b60788fc760d136211853f10ce73dc152d1f4a upstream.
This patch add to do sanity check with below field:
- cp_pack_total_block_count
- blkaddr of data/node
- extent info
- Overview
BUG() in verify_block_addr() when writing to a corrupted f2fs image
- Reproduce (4.18 upstream kernel)
- POC (poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
int fd = open(foo_bar_baz, O_RDWR | O_TRUNC, 0777);
if (fd >= 0) {
write(fd, (char *)buf, sizeof(buf));
fdatasync(fd);
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel message
[ 689.349473] F2FS-fs (loop0): Mounted with checkpoint version = 3
[ 699.728662] WARNING: CPU: 0 PID: 1309 at fs/f2fs/segment.c:2860 f2fs_inplace_write_data+0x232/0x240
[ 699.728670] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 699.729056] CPU: 0 PID: 1309 Comm: a.out Not tainted 4.18.0-rc1+ #4
[ 699.729064] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.729074] RIP: 0010:f2fs_inplace_write_data+0x232/0x240
[ 699.729076] Code: ff e9 cf fe ff ff 49 8d 7d 10 e8 39 45 ad ff 4d 8b 7d 10 be 04 00 00 00 49 8d 7f 48 e8 07 49 ad ff 45 8b 7f 48 e9 fb fe ff ff <0f> 0b f0 41 80 4d 48 04 e9 65 fe ff ff 90 66 66 66 66 90 55 48 8d
[ 699.729130] RSP: 0018:ffff8801f43af568 EFLAGS: 00010202
[ 699.729139] RAX: 000000000000003f RBX: ffff8801f43af7b8 RCX: ffffffffb88c9113
[ 699.729142] RDX: 0000000000000003 RSI: dffffc0000000000 RDI: ffff8802024e5540
[ 699.729144] RBP: ffff8801f43af590 R08: 0000000000000009 R09: ffffffffffffffe8
[ 699.729147] R10: 0000000000000001 R11: ffffed0039b0596a R12: ffff8802024e5540
[ 699.729149] R13: ffff8801f0335500 R14: ffff8801e3e7a700 R15: ffff8801e1ee4450
[ 699.729154] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000
[ 699.729156] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 699.729159] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0
[ 699.729171] Call Trace:
[ 699.729192] f2fs_do_write_data_page+0x2e2/0xe00
[ 699.729203] ? f2fs_should_update_outplace+0xd0/0xd0
[ 699.729238] ? memcg_drain_all_list_lrus+0x280/0x280
[ 699.729269] ? __radix_tree_replace+0xa3/0x120
[ 699.729276] __write_data_page+0x5c7/0xe30
[ 699.729291] ? kasan_check_read+0x11/0x20
[ 699.729310] ? page_mapped+0x8a/0x110
[ 699.729321] ? page_mkclean+0xe9/0x160
[ 699.729327] ? f2fs_do_write_data_page+0xe00/0xe00
[ 699.729331] ? invalid_page_referenced_vma+0x130/0x130
[ 699.729345] ? clear_page_dirty_for_io+0x332/0x450
[ 699.729351] f2fs_write_cache_pages+0x4ca/0x860
[ 699.729358] ? __write_data_page+0xe30/0xe30
[ 699.729374] ? percpu_counter_add_batch+0x22/0xa0
[ 699.729380] ? kasan_check_write+0x14/0x20
[ 699.729391] ? _raw_spin_lock+0x17/0x40
[ 699.729403] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30
[ 699.729413] ? iov_iter_advance+0x113/0x640
[ 699.729418] ? f2fs_write_end+0x133/0x2e0
[ 699.729423] ? balance_dirty_pages_ratelimited+0x239/0x640
[ 699.729428] f2fs_write_data_pages+0x329/0x520
[ 699.729433] ? generic_perform_write+0x250/0x320
[ 699.729438] ? f2fs_write_cache_pages+0x860/0x860
[ 699.729454] ? current_time+0x110/0x110
[ 699.729459] ? f2fs_preallocate_blocks+0x1ef/0x370
[ 699.729464] do_writepages+0x37/0xb0
[ 699.729468] ? f2fs_write_cache_pages+0x860/0x860
[ 699.729472] ? do_writepages+0x37/0xb0
[ 699.729478] __filemap_fdatawrite_range+0x19a/0x1f0
[ 699.729483] ? delete_from_page_cache_batch+0x4e0/0x4e0
[ 699.729496] ? __vfs_write+0x2b2/0x410
[ 699.729501] file_write_and_wait_range+0x66/0xb0
[ 699.729506] f2fs_do_sync_file+0x1f9/0xd90
[ 699.729511] ? truncate_partial_data_page+0x290/0x290
[ 699.729521] ? __sb_end_write+0x30/0x50
[ 699.729526] ? vfs_write+0x20f/0x260
[ 699.729530] f2fs_sync_file+0x9a/0xb0
[ 699.729534] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.729548] vfs_fsync_range+0x68/0x100
[ 699.729554] ? __fget_light+0xc9/0xe0
[ 699.729558] do_fsync+0x3d/0x70
[ 699.729562] __x64_sys_fdatasync+0x24/0x30
[ 699.729585] do_syscall_64+0x78/0x170
[ 699.729595] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 699.729613] RIP: 0033:0x7f9bf930d800
[ 699.729615] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24
[ 699.729668] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 699.729673] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800
[ 699.729675] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003
[ 699.729678] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000
[ 699.729680] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610
[ 699.729683] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000
[ 699.729687] ---[ end trace 4ce02f25ff7d3df5 ]---
[ 699.729782] ------------[ cut here ]------------
[ 699.729785] kernel BUG at fs/f2fs/segment.h:654!
[ 699.731055] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 699.732104] CPU: 0 PID: 1309 Comm: a.out Tainted: G W 4.18.0-rc1+ #4
[ 699.733684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.735611] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730
[ 699.736649] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0
[ 699.740524] RSP: 0018:ffff8801f43af508 EFLAGS: 00010283
[ 699.741573] RAX: 0000000000000000 RBX: ffff8801f43af7b8 RCX: ffffffffb88a7cef
[ 699.743006] RDX: 0000000000000007 RSI: dffffc0000000000 RDI: ffff8801e3e7a64c
[ 699.744426] RBP: ffff8801f43af558 R08: ffffed003e066b55 R09: ffffed003e066b55
[ 699.745833] R10: 0000000000000001 R11: ffffed003e066b54 R12: ffffea0007876940
[ 699.747256] R13: ffff8801f0335500 R14: ffff8801e3e7a600 R15: 0000000000000001
[ 699.748683] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000
[ 699.750293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 699.751462] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0
[ 699.752874] Call Trace:
[ 699.753386] ? f2fs_inplace_write_data+0x93/0x240
[ 699.754341] f2fs_inplace_write_data+0xd2/0x240
[ 699.755271] f2fs_do_write_data_page+0x2e2/0xe00
[ 699.756214] ? f2fs_should_update_outplace+0xd0/0xd0
[ 699.757215] ? memcg_drain_all_list_lrus+0x280/0x280
[ 699.758209] ? __radix_tree_replace+0xa3/0x120
[ 699.759164] __write_data_page+0x5c7/0xe30
[ 699.760002] ? kasan_check_read+0x11/0x20
[ 699.760823] ? page_mapped+0x8a/0x110
[ 699.761573] ? page_mkclean+0xe9/0x160
[ 699.762345] ? f2fs_do_write_data_page+0xe00/0xe00
[ 699.763332] ? invalid_page_referenced_vma+0x130/0x130
[ 699.764374] ? clear_page_dirty_for_io+0x332/0x450
[ 699.765347] f2fs_write_cache_pages+0x4ca/0x860
[ 699.766276] ? __write_data_page+0xe30/0xe30
[ 699.767161] ? percpu_counter_add_batch+0x22/0xa0
[ 699.768112] ? kasan_check_write+0x14/0x20
[ 699.768951] ? _raw_spin_lock+0x17/0x40
[ 699.769739] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30
[ 699.770885] ? iov_iter_advance+0x113/0x640
[ 699.771743] ? f2fs_write_end+0x133/0x2e0
[ 699.772569] ? balance_dirty_pages_ratelimited+0x239/0x640
[ 699.773680] f2fs_write_data_pages+0x329/0x520
[ 699.774603] ? generic_perform_write+0x250/0x320
[ 699.775544] ? f2fs_write_cache_pages+0x860/0x860
[ 699.776510] ? current_time+0x110/0x110
[ 699.777299] ? f2fs_preallocate_blocks+0x1ef/0x370
[ 699.778279] do_writepages+0x37/0xb0
[ 699.779026] ? f2fs_write_cache_pages+0x860/0x860
[ 699.779978] ? do_writepages+0x37/0xb0
[ 699.780755] __filemap_fdatawrite_range+0x19a/0x1f0
[ 699.781746] ? delete_from_page_cache_batch+0x4e0/0x4e0
[ 699.782820] ? __vfs_write+0x2b2/0x410
[ 699.783597] file_write_and_wait_range+0x66/0xb0
[ 699.784540] f2fs_do_sync_file+0x1f9/0xd90
[ 699.785381] ? truncate_partial_data_page+0x290/0x290
[ 699.786415] ? __sb_end_write+0x30/0x50
[ 699.787204] ? vfs_write+0x20f/0x260
[ 699.787941] f2fs_sync_file+0x9a/0xb0
[ 699.788694] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.789572] vfs_fsync_range+0x68/0x100
[ 699.790360] ? __fget_light+0xc9/0xe0
[ 699.791128] do_fsync+0x3d/0x70
[ 699.791779] __x64_sys_fdatasync+0x24/0x30
[ 699.792614] do_syscall_64+0x78/0x170
[ 699.793371] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 699.794406] RIP: 0033:0x7f9bf930d800
[ 699.795134] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24
[ 699.798960] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 699.800483] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800
[ 699.801923] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003
[ 699.803373] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000
[ 699.804798] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610
[ 699.806233] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000
[ 699.807667] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 699.817079] ---[ end trace 4ce02f25ff7d3df6 ]---
[ 699.818068] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730
[ 699.819114] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0
[ 699.822919] RSP: 0018:ffff8801f43af508 EFLAGS: 00010283
[ 699.823977] RAX: 0000000000000000 RBX: ffff8801f43af7b8 RCX: ffffffffb88a7cef
[ 699.825436] RDX: 0000000000000007 RSI: dffffc0000000000 RDI: ffff8801e3e7a64c
[ 699.826881] RBP: ffff8801f43af558 R08: ffffed003e066b55 R09: ffffed003e066b55
[ 699.828292] R10: 0000000000000001 R11: ffffed003e066b54 R12: ffffea0007876940
[ 699.829750] R13: ffff8801f0335500 R14: ffff8801e3e7a600 R15: 0000000000000001
[ 699.831192] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000
[ 699.832793] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 699.833981] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0
[ 699.835556] ==================================================================
[ 699.837029] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x38c/0x3e0
[ 699.838462] Read of size 8 at addr ffff8801f43af970 by task a.out/1309
[ 699.840086] CPU: 0 PID: 1309 Comm: a.out Tainted: G D W 4.18.0-rc1+ #4
[ 699.841603] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.843475] Call Trace:
[ 699.843982] dump_stack+0x7b/0xb5
[ 699.844661] print_address_description+0x70/0x290
[ 699.845607] kasan_report+0x291/0x390
[ 699.846351] ? update_stack_state+0x38c/0x3e0
[ 699.853831] __asan_load8+0x54/0x90
[ 699.854569] update_stack_state+0x38c/0x3e0
[ 699.855428] ? __read_once_size_nocheck.constprop.7+0x20/0x20
[ 699.856601] ? __save_stack_trace+0x5e/0x100
[ 699.857476] unwind_next_frame.part.5+0x18e/0x490
[ 699.858448] ? unwind_dump+0x290/0x290
[ 699.859217] ? clear_page_dirty_for_io+0x332/0x450
[ 699.860185] __unwind_start+0x106/0x190
[ 699.860974] __save_stack_trace+0x5e/0x100
[ 699.861808] ? __save_stack_trace+0x5e/0x100
[ 699.862691] ? unlink_anon_vmas+0xba/0x2c0
[ 699.863525] save_stack_trace+0x1f/0x30
[ 699.864312] save_stack+0x46/0xd0
[ 699.864993] ? __alloc_pages_slowpath+0x1420/0x1420
[ 699.865990] ? flush_tlb_mm_range+0x15e/0x220
[ 699.866889] ? kasan_check_write+0x14/0x20
[ 699.867724] ? __dec_node_state+0x92/0xb0
[ 699.868543] ? lock_page_memcg+0x85/0xf0
[ 699.869350] ? unlock_page_memcg+0x16/0x80
[ 699.870185] ? page_remove_rmap+0x198/0x520
[ 699.871048] ? mark_page_accessed+0x133/0x200
[ 699.871930] ? _cond_resched+0x1a/0x50
[ 699.872700] ? unmap_page_range+0xcd4/0xe50
[ 699.873551] ? rb_next+0x58/0x80
[ 699.874217] ? rb_next+0x58/0x80
[ 699.874895] __kasan_slab_free+0x13c/0x1a0
[ 699.875734] ? unlink_anon_vmas+0xba/0x2c0
[ 699.876563] kasan_slab_free+0xe/0x10
[ 699.877315] kmem_cache_free+0x89/0x1e0
[ 699.878095] unlink_anon_vmas+0xba/0x2c0
[ 699.878913] free_pgtables+0x101/0x1b0
[ 699.879677] exit_mmap+0x146/0x2a0
[ 699.880378] ? __ia32_sys_munmap+0x50/0x50
[ 699.881214] ? kasan_check_read+0x11/0x20
[ 699.882052] ? mm_update_next_owner+0x322/0x380
[ 699.882985] mmput+0x8b/0x1d0
[ 699.883602] do_exit+0x43a/0x1390
[ 699.884288] ? mm_update_next_owner+0x380/0x380
[ 699.885212] ? f2fs_sync_file+0x9a/0xb0
[ 699.885995] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.886877] ? vfs_fsync_range+0x68/0x100
[ 699.887694] ? __fget_light+0xc9/0xe0
[ 699.888442] ? do_fsync+0x3d/0x70
[ 699.889118] ? __x64_sys_fdatasync+0x24/0x30
[ 699.889996] rewind_stack_do_exit+0x17/0x20
[ 699.890860] RIP: 0033:0x7f9bf930d800
[ 699.891585] Code: Bad RIP value.
[ 699.892268] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
[ 699.893781] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800
[ 699.895220] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003
[ 699.896643] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000
[ 699.898069] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610
[ 699.899505] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000
[ 699.901241] The buggy address belongs to the page:
[ 699.902215] page:ffffea0007d0ebc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
[ 699.903811] flags: 0x2ffff0000000000()
[ 699.904585] raw: 02ffff0000000000 0000000000000000 ffffffff07d00101 0000000000000000
[ 699.906125] raw: 0000000000000000 0000000000240000 00000000ffffffff 0000000000000000
[ 699.907673] page dumped because: kasan: bad access detected
[ 699.909108] Memory state around the buggy address:
[ 699.910077] ffff8801f43af800: 00 f1 f1 f1 f1 00 f4 f4 f4 f3 f3 f3 f3 00 00 00
[ 699.911528] ffff8801f43af880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 699.912953] >ffff8801f43af900: 00 00 00 00 00 00 00 00 f1 01 f4 f4 f4 f2 f2 f2
[ 699.914392] ^
[ 699.915758] ffff8801f43af980: f2 00 f4 f4 00 00 00 00 f2 00 00 00 00 00 00 00
[ 699.917193] ffff8801f43afa00: 00 00 00 00 00 00 00 00 00 f3 f3 f3 00 00 00 00
[ 699.918634] ==================================================================
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/segment.h#L644
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[bwh: Backported to 4.14:
- Error label is different in validate_checkpoint() due to the earlier
backport of "f2fs: fix invalid memory access"
- Adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit e34438c903b653daca2b2a7de95aed46226f8ed3 upstream.
This patch adds to do sanity check with below fields of inode to
avoid reported panic.
- node footer
- iblocks
https://bugzilla.kernel.org/show_bug.cgi?id=200223
- Overview
BUG() triggered in f2fs_truncate_inode_blocks() when un-mounting a mounted f2fs image after writing to it
- Reproduce
- POC (poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
// open / write / read
int fd = open(foo_bar_baz, O_RDWR | O_TRUNC, 0777);
if (fd >= 0) {
write(fd, (char *)buf, 517);
write(fd, (char *)buf, sizeof(buf));
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel meesage
[ 552.479723] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 556.451891] ------------[ cut here ]------------
[ 556.451899] kernel BUG at fs/f2fs/node.c:987!
[ 556.452920] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 556.453936] CPU: 1 PID: 1310 Comm: umount Not tainted 4.18.0-rc1+ #4
[ 556.455213] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 556.457140] RIP: 0010:f2fs_truncate_inode_blocks+0x4a7/0x6f0
[ 556.458280] Code: e8 ae ea ff ff 41 89 c7 c1 e8 1f 84 c0 74 0a 41 83 ff fe 0f 85 35 ff ff ff 81 85 b0 fe ff ff fb 03 00 00 e9 f7 fd ff ff 0f 0b <0f> 0b e8 62 b7 9a 00 48 8b bd a0 fe ff ff e8 56 54 ae ff 48 8b b5
[ 556.462015] RSP: 0018:ffff8801f292f808 EFLAGS: 00010286
[ 556.463068] RAX: ffffed003e73242d RBX: ffff8801f292f958 RCX: ffffffffb88b81bc
[ 556.464479] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801f3992164
[ 556.465901] RBP: ffff8801f292f980 R08: ffffed003e73242d R09: ffffed003e73242d
[ 556.467311] R10: 0000000000000001 R11: ffffed003e73242c R12: 00000000fffffc64
[ 556.468706] R13: ffff8801f3992000 R14: 0000000000000058 R15: 00000000ffff8801
[ 556.470117] FS: 00007f8029297840(0000) GS:ffff8801f6f00000(0000) knlGS:0000000000000000
[ 556.471702] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 556.472838] CR2: 000055f5f57305d8 CR3: 00000001f18b0000 CR4: 00000000000006e0
[ 556.474265] Call Trace:
[ 556.474782] ? f2fs_alloc_nid_failed+0xf0/0xf0
[ 556.475686] ? truncate_nodes+0x980/0x980
[ 556.476516] ? pagecache_get_page+0x21f/0x2f0
[ 556.477412] ? __asan_loadN+0xf/0x20
[ 556.478153] ? __get_node_page+0x331/0x5b0
[ 556.478992] ? reweight_entity+0x1e6/0x3b0
[ 556.479826] f2fs_truncate_blocks+0x55e/0x740
[ 556.480709] ? f2fs_truncate_data_blocks+0x20/0x20
[ 556.481689] ? __radix_tree_lookup+0x34/0x160
[ 556.482630] ? radix_tree_lookup+0xd/0x10
[ 556.483445] f2fs_truncate+0xd4/0x1a0
[ 556.484206] f2fs_evict_inode+0x5ce/0x630
[ 556.485032] evict+0x16f/0x290
[ 556.485664] iput+0x280/0x300
[ 556.486300] dentry_unlink_inode+0x165/0x1e0
[ 556.487169] __dentry_kill+0x16a/0x260
[ 556.487936] dentry_kill+0x70/0x250
[ 556.488651] shrink_dentry_list+0x125/0x260
[ 556.489504] shrink_dcache_parent+0xc1/0x110
[ 556.490379] ? shrink_dcache_sb+0x200/0x200
[ 556.491231] ? bit_wait_timeout+0xc0/0xc0
[ 556.492047] do_one_tree+0x12/0x40
[ 556.492743] shrink_dcache_for_umount+0x3f/0xa0
[ 556.493656] generic_shutdown_super+0x43/0x1c0
[ 556.494561] kill_block_super+0x52/0x80
[ 556.495341] kill_f2fs_super+0x62/0x70
[ 556.496105] deactivate_locked_super+0x6f/0xa0
[ 556.497004] deactivate_super+0x5e/0x80
[ 556.497785] cleanup_mnt+0x61/0xa0
[ 556.498492] __cleanup_mnt+0x12/0x20
[ 556.499218] task_work_run+0xc8/0xf0
[ 556.499949] exit_to_usermode_loop+0x125/0x130
[ 556.500846] do_syscall_64+0x138/0x170
[ 556.501609] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 556.502659] RIP: 0033:0x7f8028b77487
[ 556.503384] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48
[ 556.507137] RSP: 002b:00007fff9f2e3598 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 556.508637] RAX: 0000000000000000 RBX: 0000000000ebd030 RCX: 00007f8028b77487
[ 556.510069] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000ec41e0
[ 556.511481] RBP: 0000000000ec41e0 R08: 0000000000000000 R09: 0000000000000014
[ 556.512892] R10: 00000000000006b2 R11: 0000000000000246 R12: 00007f802908083c
[ 556.514320] R13: 0000000000000000 R14: 0000000000ebd210 R15: 00007fff9f2e3820
[ 556.515745] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 556.529276] ---[ end trace 4ce02f25ff7d3df5 ]---
[ 556.530340] RIP: 0010:f2fs_truncate_inode_blocks+0x4a7/0x6f0
[ 556.531513] Code: e8 ae ea ff ff 41 89 c7 c1 e8 1f 84 c0 74 0a 41 83 ff fe 0f 85 35 ff ff ff 81 85 b0 fe ff ff fb 03 00 00 e9 f7 fd ff ff 0f 0b <0f> 0b e8 62 b7 9a 00 48 8b bd a0 fe ff ff e8 56 54 ae ff 48 8b b5
[ 556.535330] RSP: 0018:ffff8801f292f808 EFLAGS: 00010286
[ 556.536395] RAX: ffffed003e73242d RBX: ffff8801f292f958 RCX: ffffffffb88b81bc
[ 556.537824] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801f3992164
[ 556.539290] RBP: ffff8801f292f980 R08: ffffed003e73242d R09: ffffed003e73242d
[ 556.540709] R10: 0000000000000001 R11: ffffed003e73242c R12: 00000000fffffc64
[ 556.542131] R13: ffff8801f3992000 R14: 0000000000000058 R15: 00000000ffff8801
[ 556.543579] FS: 00007f8029297840(0000) GS:ffff8801f6f00000(0000) knlGS:0000000000000000
[ 556.545180] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 556.546338] CR2: 000055f5f57305d8 CR3: 00000001f18b0000 CR4: 00000000000006e0
[ 556.547809] ==================================================================
[ 556.549248] BUG: KASAN: stack-out-of-bounds in arch_tlb_gather_mmu+0x52/0x170
[ 556.550672] Write of size 8 at addr ffff8801f292fd10 by task umount/1310
[ 556.552338] CPU: 1 PID: 1310 Comm: umount Tainted: G D 4.18.0-rc1+ #4
[ 556.553886] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 556.555756] Call Trace:
[ 556.556264] dump_stack+0x7b/0xb5
[ 556.556944] print_address_description+0x70/0x290
[ 556.557903] kasan_report+0x291/0x390
[ 556.558649] ? arch_tlb_gather_mmu+0x52/0x170
[ 556.559537] __asan_store8+0x57/0x90
[ 556.560268] arch_tlb_gather_mmu+0x52/0x170
[ 556.561110] tlb_gather_mmu+0x12/0x40
[ 556.561862] exit_mmap+0x123/0x2a0
[ 556.562555] ? __ia32_sys_munmap+0x50/0x50
[ 556.563384] ? exit_aio+0x98/0x230
[ 556.564079] ? __x32_compat_sys_io_submit+0x260/0x260
[ 556.565099] ? taskstats_exit+0x1f4/0x640
[ 556.565925] ? kasan_check_read+0x11/0x20
[ 556.566739] ? mm_update_next_owner+0x322/0x380
[ 556.567652] mmput+0x8b/0x1d0
[ 556.568260] do_exit+0x43a/0x1390
[ 556.568937] ? mm_update_next_owner+0x380/0x380
[ 556.569855] ? deactivate_super+0x5e/0x80
[ 556.570668] ? cleanup_mnt+0x61/0xa0
[ 556.571395] ? __cleanup_mnt+0x12/0x20
[ 556.572156] ? task_work_run+0xc8/0xf0
[ 556.572917] ? exit_to_usermode_loop+0x125/0x130
[ 556.573861] rewind_stack_do_exit+0x17/0x20
[ 556.574707] RIP: 0033:0x7f8028b77487
[ 556.575428] Code: Bad RIP value.
[ 556.576106] RSP: 002b:00007fff9f2e3598 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 556.577599] RAX: 0000000000000000 RBX: 0000000000ebd030 RCX: 00007f8028b77487
[ 556.579020] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000ec41e0
[ 556.580422] RBP: 0000000000ec41e0 R08: 0000000000000000 R09: 0000000000000014
[ 556.581833] R10: 00000000000006b2 R11: 0000000000000246 R12: 00007f802908083c
[ 556.583252] R13: 0000000000000000 R14: 0000000000ebd210 R15: 00007fff9f2e3820
[ 556.584983] The buggy address belongs to the page:
[ 556.585961] page:ffffea0007ca4bc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
[ 556.587540] flags: 0x2ffff0000000000()
[ 556.588296] raw: 02ffff0000000000 0000000000000000 dead000000000200 0000000000000000
[ 556.589822] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 556.591359] page dumped because: kasan: bad access detected
[ 556.592786] Memory state around the buggy address:
[ 556.593753] ffff8801f292fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 556.595191] ffff8801f292fc80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00
[ 556.596613] >ffff8801f292fd00: 00 00 f3 00 00 00 00 f3 f3 00 00 00 00 f4 f4 f4
[ 556.598044] ^
[ 556.598797] ffff8801f292fd80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
[ 556.600225] ffff8801f292fe00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f4 f4 f4
[ 556.601647] ==================================================================
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/node.c#L987
case NODE_DIND_BLOCK:
err = truncate_nodes(&dn, nofs, offset[1], 3);
cont = 0;
break;
default:
BUG(); <---
}
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit 76d56d4ab4f2a9e4f085c7d77172194ddaccf7d2 upstream.
If FI_EXTRA_ATTR is set in inode by fuzzing, inode.i_addr[0] will be
parsed as inode.i_extra_isize, then in __recover_inline_status, inline
data address will beyond boundary of page, result in accessing invalid
memory.
So in this condition, during reading inode page, let's do sanity check
with EXTRA_ATTR feature of fs and extra_attr bit of inode, if they're
inconsistent, deny to load this inode.
- Overview
Out-of-bound access in f2fs_iget() when mounting a corrupted f2fs image
- Reproduce
The following message will be got in KASAN build of 4.18 upstream kernel.
[ 819.392227] ==================================================================
[ 819.393901] BUG: KASAN: slab-out-of-bounds in f2fs_iget+0x736/0x1530
[ 819.395329] Read of size 4 at addr ffff8801f099c968 by task mount/1292
[ 819.397079] CPU: 1 PID: 1292 Comm: mount Not tainted 4.18.0-rc1+ #4
[ 819.397082] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 819.397088] Call Trace:
[ 819.397124] dump_stack+0x7b/0xb5
[ 819.397154] print_address_description+0x70/0x290
[ 819.397159] kasan_report+0x291/0x390
[ 819.397163] ? f2fs_iget+0x736/0x1530
[ 819.397176] check_memory_region+0x139/0x190
[ 819.397182] __asan_loadN+0xf/0x20
[ 819.397185] f2fs_iget+0x736/0x1530
[ 819.397197] f2fs_fill_super+0x1b4f/0x2b40
[ 819.397202] ? f2fs_fill_super+0x1b4f/0x2b40
[ 819.397208] ? f2fs_commit_super+0x1b0/0x1b0
[ 819.397227] ? set_blocksize+0x90/0x140
[ 819.397241] mount_bdev+0x1c5/0x210
[ 819.397245] ? f2fs_commit_super+0x1b0/0x1b0
[ 819.397252] f2fs_mount+0x15/0x20
[ 819.397256] mount_fs+0x60/0x1a0
[ 819.397267] ? alloc_vfsmnt+0x309/0x360
[ 819.397272] vfs_kern_mount+0x6b/0x1a0
[ 819.397282] do_mount+0x34a/0x18c0
[ 819.397300] ? lockref_put_or_lock+0xcf/0x160
[ 819.397306] ? copy_mount_string+0x20/0x20
[ 819.397318] ? memcg_kmem_put_cache+0x1b/0xa0
[ 819.397324] ? kasan_check_write+0x14/0x20
[ 819.397334] ? _copy_from_user+0x6a/0x90
[ 819.397353] ? memdup_user+0x42/0x60
[ 819.397359] ksys_mount+0x83/0xd0
[ 819.397365] __x64_sys_mount+0x67/0x80
[ 819.397388] do_syscall_64+0x78/0x170
[ 819.397403] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.397422] RIP: 0033:0x7f54c667cb9a
[ 819.397424] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 819.397483] RSP: 002b:00007ffd8f46cd08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 819.397496] RAX: ffffffffffffffda RBX: 0000000000dfa030 RCX: 00007f54c667cb9a
[ 819.397498] RDX: 0000000000dfa210 RSI: 0000000000dfbf30 RDI: 0000000000e02ec0
[ 819.397501] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000013
[ 819.397503] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000000000e02ec0
[ 819.397505] R13: 0000000000dfa210 R14: 0000000000000000 R15: 0000000000000003
[ 819.397866] Allocated by task 139:
[ 819.398702] save_stack+0x46/0xd0
[ 819.398705] kasan_kmalloc+0xad/0xe0
[ 819.398709] kasan_slab_alloc+0x11/0x20
[ 819.398713] kmem_cache_alloc+0xd1/0x1e0
[ 819.398717] dup_fd+0x50/0x4c0
[ 819.398740] copy_process.part.37+0xbed/0x32e0
[ 819.398744] _do_fork+0x16e/0x590
[ 819.398748] __x64_sys_clone+0x69/0x80
[ 819.398752] do_syscall_64+0x78/0x170
[ 819.398756] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.399097] Freed by task 159:
[ 819.399743] save_stack+0x46/0xd0
[ 819.399747] __kasan_slab_free+0x13c/0x1a0
[ 819.399750] kasan_slab_free+0xe/0x10
[ 819.399754] kmem_cache_free+0x89/0x1e0
[ 819.399757] put_files_struct+0x132/0x150
[ 819.399761] exit_files+0x62/0x70
[ 819.399766] do_exit+0x47b/0x1390
[ 819.399770] do_group_exit+0x86/0x130
[ 819.399774] __x64_sys_exit_group+0x2c/0x30
[ 819.399778] do_syscall_64+0x78/0x170
[ 819.399782] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.400115] The buggy address belongs to the object at ffff8801f099c680
which belongs to the cache files_cache of size 704
[ 819.403234] The buggy address is located 40 bytes to the right of
704-byte region [ffff8801f099c680, ffff8801f099c940)
[ 819.405689] The buggy address belongs to the page:
[ 819.406709] page:ffffea0007c26700 count:1 mapcount:0 mapping:ffff8801f69a3340 index:0xffff8801f099d380 compound_mapcount: 0
[ 819.408984] flags: 0x2ffff0000008100(slab|head)
[ 819.409932] raw: 02ffff0000008100 ffffea00077fb600 0000000200000002 ffff8801f69a3340
[ 819.411514] raw: ffff8801f099d380 0000000080130000 00000001ffffffff 0000000000000000
[ 819.413073] page dumped because: kasan: bad access detected
[ 819.414539] Memory state around the buggy address:
[ 819.415521] ffff8801f099c800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.416981] ffff8801f099c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.418454] >ffff8801f099c900: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 819.419921] ^
[ 819.421265] ffff8801f099c980: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[ 819.422745] ffff8801f099ca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.424206] ==================================================================
[ 819.425668] Disabling lock debugging due to kernel taint
[ 819.457463] F2FS-fs (loop0): Mounted with checkpoint version = 3
The kernel still mounts the image. If you run the following program on the mounted folder mnt,
(poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
int fd = open(foo_bar_baz, O_RDONLY, 0);
if (fd >= 0) {
read(fd, (char *)buf, 11);
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
You can get kernel crash:
[ 819.457463] F2FS-fs (loop0): Mounted with checkpoint version = 3
[ 918.028501] BUG: unable to handle kernel paging request at ffffed0048000d82
[ 918.044020] PGD 23ffee067 P4D 23ffee067 PUD 23fbef067 PMD 0
[ 918.045207] Oops: 0000 [#1] SMP KASAN PTI
[ 918.046048] CPU: 0 PID: 1309 Comm: poc Tainted: G B 4.18.0-rc1+ #4
[ 918.047573] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 918.049552] RIP: 0010:check_memory_region+0x5e/0x190
[ 918.050565] Code: f8 49 c1 e8 03 49 89 db 49 c1 eb 03 4d 01 cb 4d 01 c1 4d 8d 63 01 4c 89 c8 4d 89 e2 4d 29 ca 49 83 fa 10 7f 3d 4d 85 d2 74 32 <41> 80 39 00 75 23 48 b8 01 00 00 00 00 fc ff df 4d 01 d1 49 01 c0
[ 918.054322] RSP: 0018:ffff8801e3a1f258 EFLAGS: 00010202
[ 918.055400] RAX: ffffed0048000d82 RBX: ffff880240006c11 RCX: ffffffffb8867d14
[ 918.056832] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff880240006c10
[ 918.058253] RBP: ffff8801e3a1f268 R08: 1ffff10048000d82 R09: ffffed0048000d82
[ 918.059717] R10: 0000000000000001 R11: ffffed0048000d82 R12: ffffed0048000d83
[ 918.061159] R13: ffff8801e3a1f390 R14: 0000000000000000 R15: ffff880240006c08
[ 918.062614] FS: 00007fac9732c700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000
[ 918.064246] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 918.065412] CR2: ffffed0048000d82 CR3: 00000001df77a000 CR4: 00000000000006f0
[ 918.066882] Call Trace:
[ 918.067410] __asan_loadN+0xf/0x20
[ 918.068149] f2fs_find_target_dentry+0xf4/0x270
[ 918.069083] ? __get_node_page+0x331/0x5b0
[ 918.069925] f2fs_find_in_inline_dir+0x24b/0x310
[ 918.070881] ? f2fs_recover_inline_data+0x4c0/0x4c0
[ 918.071905] ? unwind_next_frame.part.5+0x34f/0x490
[ 918.072901] ? unwind_dump+0x290/0x290
[ 918.073695] ? is_bpf_text_address+0xe/0x20
[ 918.074566] __f2fs_find_entry+0x599/0x670
[ 918.075408] ? kasan_unpoison_shadow+0x36/0x50
[ 918.076315] ? kasan_kmalloc+0xad/0xe0
[ 918.077100] ? memcg_kmem_put_cache+0x55/0xa0
[ 918.077998] ? f2fs_find_target_dentry+0x270/0x270
[ 918.079006] ? d_set_d_op+0x30/0x100
[ 918.079749] ? __d_lookup_rcu+0x69/0x2e0
[ 918.080556] ? __d_alloc+0x275/0x450
[ 918.081297] ? kasan_check_write+0x14/0x20
[ 918.082135] ? memset+0x31/0x40
[ 918.082820] ? fscrypt_setup_filename+0x1ec/0x4c0
[ 918.083782] ? d_alloc_parallel+0x5bb/0x8c0
[ 918.084640] f2fs_find_entry+0xe9/0x110
[ 918.085432] ? __f2fs_find_entry+0x670/0x670
[ 918.086308] ? kasan_check_write+0x14/0x20
[ 918.087163] f2fs_lookup+0x297/0x590
[ 918.087902] ? f2fs_link+0x2b0/0x2b0
[ 918.088646] ? legitimize_path.isra.29+0x61/0xa0
[ 918.089589] __lookup_slow+0x12e/0x240
[ 918.090371] ? may_delete+0x2b0/0x2b0
[ 918.091123] ? __nd_alloc_stack+0xa0/0xa0
[ 918.091944] lookup_slow+0x44/0x60
[ 918.092642] walk_component+0x3ee/0xa40
[ 918.093428] ? is_bpf_text_address+0xe/0x20
[ 918.094283] ? pick_link+0x3e0/0x3e0
[ 918.095047] ? in_group_p+0xa5/0xe0
[ 918.095771] ? generic_permission+0x53/0x1e0
[ 918.096666] ? security_inode_permission+0x1d/0x70
[ 918.097646] ? inode_permission+0x7a/0x1f0
[ 918.098497] link_path_walk+0x2a2/0x7b0
[ 918.099298] ? apparmor_capget+0x3d0/0x3d0
[ 918.100140] ? walk_component+0xa40/0xa40
[ 918.100958] ? path_init+0x2e6/0x580
[ 918.101695] path_openat+0x1bb/0x2160
[ 918.102471] ? __save_stack_trace+0x92/0x100
[ 918.103352] ? save_stack+0xb5/0xd0
[ 918.104070] ? vfs_unlink+0x250/0x250
[ 918.104822] ? save_stack+0x46/0xd0
[ 918.105538] ? kasan_slab_alloc+0x11/0x20
[ 918.106370] ? kmem_cache_alloc+0xd1/0x1e0
[ 918.107213] ? getname_flags+0x76/0x2c0
[ 918.107997] ? getname+0x12/0x20
[ 918.108677] ? do_sys_open+0x14b/0x2c0
[ 918.109450] ? __x64_sys_open+0x4c/0x60
[ 918.110255] ? do_syscall_64+0x78/0x170
[ 918.111083] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.112148] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.113204] ? f2fs_empty_inline_dir+0x1e0/0x1e0
[ 918.114150] ? timespec64_trunc+0x5c/0x90
[ 918.114993] ? wb_io_lists_depopulated+0x1a/0xc0
[ 918.115937] ? inode_io_list_move_locked+0x102/0x110
[ 918.116949] do_filp_open+0x12b/0x1d0
[ 918.117709] ? may_open_dev+0x50/0x50
[ 918.118475] ? kasan_kmalloc+0xad/0xe0
[ 918.119246] do_sys_open+0x17c/0x2c0
[ 918.119983] ? do_sys_open+0x17c/0x2c0
[ 918.120751] ? filp_open+0x60/0x60
[ 918.121463] ? task_work_run+0x4d/0xf0
[ 918.122237] __x64_sys_open+0x4c/0x60
[ 918.123001] do_syscall_64+0x78/0x170
[ 918.123759] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.124802] RIP: 0033:0x7fac96e3e040
[ 918.125537] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 09 27 2d 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e e0 01 00 48 89 04 24
[ 918.129341] RSP: 002b:00007fff1b37f848 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[ 918.130870] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac96e3e040
[ 918.132295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000122d080
[ 918.133748] RBP: 00007fff1b37f9b0 R08: 00007fac9710bbd8 R09: 0000000000000001
[ 918.135209] R10: 000000000000069d R11: 0000000000000246 R12: 0000000000400c20
[ 918.136650] R13: 00007fff1b37fab0 R14: 0000000000000000 R15: 0000000000000000
[ 918.138093] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 918.147924] CR2: ffffed0048000d82
[ 918.148619] ---[ end trace 4ce02f25ff7d3df5 ]---
[ 918.149563] RIP: 0010:check_memory_region+0x5e/0x190
[ 918.150576] Code: f8 49 c1 e8 03 49 89 db 49 c1 eb 03 4d 01 cb 4d 01 c1 4d 8d 63 01 4c 89 c8 4d 89 e2 4d 29 ca 49 83 fa 10 7f 3d 4d 85 d2 74 32 <41> 80 39 00 75 23 48 b8 01 00 00 00 00 fc ff df 4d 01 d1 49 01 c0
[ 918.154360] RSP: 0018:ffff8801e3a1f258 EFLAGS: 00010202
[ 918.155411] RAX: ffffed0048000d82 RBX: ffff880240006c11 RCX: ffffffffb8867d14
[ 918.156833] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff880240006c10
[ 918.158257] RBP: ffff8801e3a1f268 R08: 1ffff10048000d82 R09: ffffed0048000d82
[ 918.159722] R10: 0000000000000001 R11: ffffed0048000d82 R12: ffffed0048000d83
[ 918.161149] R13: ffff8801e3a1f390 R14: 0000000000000000 R15: ffff880240006c08
[ 918.162587] FS: 00007fac9732c700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000
[ 918.164203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 918.165356] CR2: ffffed0048000d82 CR3: 00000001df77a000 CR4: 00000000000006f0
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[bwh: Backported to 4.14: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
This was done as part of commit 5d64600d4f33 "f2fs: avoid bug_on on
corrupted inode" upstream, but the specific check that commit added is
not applicable to 4.14.
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit e1da7872f6eda977bd812346bf588c35e4495a1e upstream.
This patch introduces verify_blkaddr to check meta/data block address
with valid range to detect bug earlier.
In addition, once we encounter an invalid blkaddr, notice user to run
fsck to fix, and let the kernel panic.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[bwh: Backported to 4.14: I skipped an earlier renaming of
is_valid_meta_blkaddr() to f2fs_is_valid_meta_blkaddr()]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit 7b525dd01365c6764018e374d391c92466be1b7a upstream.
- rename is_valid_blkaddr() to is_valid_meta_blkaddr() for readability.
- introduce is_valid_blkaddr() for cleanup.
No logic change in this patch.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
commit a4f843bd004d775cbb360cd375969b8a479568a9 upstream.
syzbot hit the following crash on upstream commit
83beed7b2b26f232d782127792dd0cd4362fdc41 (Fri Apr 20 17:56:32 2018 +0000)
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=d154ec99402c6f628887
C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5414336294027264
syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=5471683234234368
Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5436660795834368
Kernel config: https://syzkaller.appspot.com/x/.config?id=1808800213120130118
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+d154ec99402c6f628887@syzkaller.appspotmail.com
It will help syzbot understand when the bug is fixed. See footer for details.
If you forward the report, please keep this part and the footer.
F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): invalid crc value
------------[ cut here ]------------
kernel BUG at fs/f2fs/node.c:1185!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4549 Comm: syzkaller704305 Not tainted 4.17.0-rc1+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__get_node_page+0xb68/0x16e0 fs/f2fs/node.c:1185
RSP: 0018:ffff8801d960e820 EFLAGS: 00010293
RAX: ffff8801d88205c0 RBX: 0000000000000003 RCX: ffffffff82f6cc06
RDX: 0000000000000000 RSI: ffffffff82f6d5e8 RDI: 0000000000000004
RBP: ffff8801d960ec30 R08: ffff8801d88205c0 R09: ffffed003b5e46c2
R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801a86e00c0
R13: 0000000000000001 R14: ffff8801a86e0530 R15: ffff8801d9745240
FS: 000000000072c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d403209b8 CR3: 00000001d8f3f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
get_node_page fs/f2fs/node.c:1237 [inline]
truncate_xattr_node+0x152/0x2e0 fs/f2fs/node.c:1014
remove_inode_page+0x200/0xaf0 fs/f2fs/node.c:1039
f2fs_evict_inode+0xe86/0x1710 fs/f2fs/inode.c:547
evict+0x4a6/0x960 fs/inode.c:557
iput_final fs/inode.c:1519 [inline]
iput+0x62d/0xa80 fs/inode.c:1545
f2fs_fill_super+0x5f4e/0x7bf0 fs/f2fs/super.c:2849
mount_bdev+0x30c/0x3e0 fs/super.c:1164
f2fs_mount+0x34/0x40 fs/f2fs/super.c:3020
mount_fs+0xae/0x328 fs/super.c:1267
vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037
vfs_kern_mount fs/namespace.c:1027 [inline]
do_new_mount fs/namespace.c:2518 [inline]
do_mount+0x564/0x3070 fs/namespace.c:2848
ksys_mount+0x12d/0x140 fs/namespace.c:3064
__do_sys_mount fs/namespace.c:3078 [inline]
__se_sys_mount fs/namespace.c:3075 [inline]
__x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x443dea
RSP: 002b:00007ffcc7882368 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000c00 RCX: 0000000000443dea
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcc7882370
RBP: 0000000000000003 R08: 0000000020016a00 R09: 000000000000000a
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000004
R13: 0000000000402ce0 R14: 0000000000000000 R15: 0000000000000000
RIP: __get_node_page+0xb68/0x16e0 fs/f2fs/node.c:1185 RSP: ffff8801d960e820
---[ end trace 4edbeb71f002bb76 ]---
Reported-and-tested-by: syzbot+d154ec99402c6f628887@syzkaller.appspotmail.com
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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|
Add a bugon in f2fs_evict_inode to detect inconsistent status between
inode cache and related node page cache.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
If another thread already made the page dirtied or writebacked, we must avoid
to verify checksum. If we got an error, we need to remove its uptodate as well.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch adds to support inode checksum in f2fs.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix verification flow]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch adds to support plain project quota.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch add new flag F2FS_EXTRA_ATTR storing in inode.i_inline
to indicate that on-disk structure of current inode is extended.
In order to extend, we changed the inode structure a bit:
Original one:
struct f2fs_inode {
...
struct f2fs_extent i_ext;
__le32 i_addr[DEF_ADDRS_PER_INODE];
__le32 i_nid[DEF_NIDS_PER_INODE];
}
Extended one:
struct f2fs_inode {
...
struct f2fs_extent i_ext;
union {
struct {
__le16 i_extra_isize;
__le16 i_padding;
__le32 i_extra_end[0];
};
__le32 i_addr[DEF_ADDRS_PER_INODE];
};
__le32 i_nid[DEF_NIDS_PER_INODE];
}
Once F2FS_EXTRA_ATTR is set, we will steal four bytes in the head of
i_addr field for storing i_extra_isize and i_padding. with i_extra_isize,
we can calculate actual size of reserved space in i_addr, available
attribute fields included in total extra attribute fields for current
inode can be described as below:
+--------------------+
| .i_mode |
| ... |
| .i_ext |
+--------------------+
| .i_extra_isize |-----+
| .i_padding | |
| .i_prjid | |
| .i_atime_extra | |
| .i_ctime_extra | |
| .i_mtime_extra |<----+
| .i_inode_cs |<----- store blkaddr/inline from here
| .i_xattr_cs |
| ... |
+--------------------+
| |
| block address |
| |
+--------------------+
| .i_nid |
+--------------------+
| node_footer |
| (nid, ino, offset) |
+--------------------+
Hence, with this patch, we would enhance scalability of f2fs inode for
storing more newly added attribute.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch tries to make below macros calculating max inline size,
inline dentry field size considerring reserving size-changeable
space:
- MAX_INLINE_DATA
- NR_INLINE_DENTRY
- INLINE_DENTRY_BITMAP_SIZE
- INLINE_RESERVED_SIZE
Then, when inline_{data,dentry} options is enabled, it allows us to
reserve inline space with different size flexibly for adding newly
introduced inode attribute.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch adds to support plain user/group quota.
Change Note by Jaegeuk Kim.
- Use f2fs page cache for quota files in order to consider garbage collection.
so, quota files are not tolerable for sudden power-cuts, so user needs to do
quotacheck.
- setattr() calls dquot_transfer which will transfer inode->i_blocks.
We can't reclaim that during f2fs_evict_inode(). So, we need to count
node blocks as well in order to match i_blocks with dquot's space.
Note that, Chao wrote a patch to count inode->i_blocks without inode block.
(f2fs: don't count inode block in in-memory inode.i_blocks)
- in f2fs_remount, we need to make RW in prior to dquot_resume.
- handle fault_injection case during f2fs_quota_off_umount
- TODO: Project quota
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, we count all inode consumed blocks including inode block,
xattr block, index block, data block into i_blocks, for other generic
filesystems, they won't count inode block into i_blocks, so for
userspace applications or quota system, they may detect incorrect block
count according to i_blocks value in inode.
This patch changes to count all blocks into inode.i_blocks excluding
inode block, for on-disk i_blocks, we keep counting inode block for
backward compatibility.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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Both in memory or on disk, generic filesystems record i_blocks with
512bytes sized sector count, also VFS sub module such as disk quota
follows this rule, but f2fs records it with 4096bytes sized block
count, this difference leads to that once we use dquota's function
which inc/dec iblocks, it will make i_blocks of f2fs being inconsistent
between in memory and on disk.
In order to resolve this issue, this patch changes to make in-memory
i_blocks of f2fs recording sector count instead of block count,
meanwhile leaving on-disk i_blocks recording block count.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
For example,
f2fs_create
- new_node_page is failed
- handle_failed_inode
- skip to add it into orphan list, since ni.blk_addr == NULL_ADDR
: set_inode_flag(inode, FI_FREE_NID)
f2fs_evict_inode
- EIO due to fault injection
- f2fs_bug_on() is triggered
So, we don't need to call f2fs_bug_on in this case.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch fixes missing inode flag loaded from disk, reported by Tom.
[tom@localhost ~]$ sudo mount /dev/loop0 /mnt/
[tom@localhost ~]$ sudo chown tom:tom /mnt/
[tom@localhost ~]$ touch /mnt/testfile
[tom@localhost ~]$ sudo chattr +i /mnt/testfile
[tom@localhost ~]$ echo test > /mnt/testfile
bash: /mnt/testfile: Operation not permitted
[tom@localhost ~]$ rm /mnt/testfile
rm: cannot remove '/mnt/testfile': Operation not permitted
[tom@localhost ~]$ sudo umount /mnt/
[tom@localhost ~]$ sudo mount /dev/loop0 /mnt/
[tom@localhost ~]$ lsattr /mnt/testfile
----i-------------- /mnt/testfile
[tom@localhost ~]$ echo test > /mnt/testfile
[tom@localhost ~]$ rm /mnt/testfile
[tom@localhost ~]$ sudo umount /mnt/
Cc: stable@vger.kernel.org
Reported-by: Tom Yan <tom.ty89@outlook.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch also reverts d0db7703ac1 ("f2fs: do SSR in higher priority").
This patch fixes out of free segments caused by many small file creation by
1) mkfs -s 1 2G
2) mount
3) untar
- preoduce 60000 small files burstly
4) sync
- flush node pages
- flush imeta
Here, when we do f2fs_balance_fs, we missed # of imeta blocks, resulting in
skipping to check has_not_enough_free_secs.
Another test is done by
1) mkfs -s 12 2G
2) mount
3) untar
- preoduce 60000 small files burstly
4) sync
- flush node pages
- flush imeta
In this case, this patch also fixes wrong block allocation under large section
size.
Reported-by: William Brana <wbrana@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
This patch fixes the following scenario.
- f2fs_create/f2fs_mkdir - write_checkpoint
- f2fs_mark_inode_dirty_sync - block_operations
- f2fs_lock_all
- f2fs_sync_inode_meta
- f2fs_unlock_all
- sync_inode_metadata
- f2fs_lock_op
- f2fs_write_inode
- update_inode_page
- get_node_page
return -ENOENT
- new_inode_page
- fill_node_footer
- f2fs_mark_inode_dirty_sync
- ...
- f2fs_unlock_op
- f2fs_inode_synced
- f2fs_lock_all
- do_checkpoint
In this checkpoint, we can get an inode page which contains zeros having valid
node footer only.
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
The previous one was not a proper location to inject an error, since there
is no point to get errors. Instead, we can emulate EIO during truncation,
and the below logic should handle it correctly.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
If f2fs_new_inode() is failed, the bad inode will invalidate 0'th node page
during f2fs_evict_inode(), which doesn't need to do.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
Previously kernel message can show that in which function we do the
injection, but unfortunately, most of the caller are the same, for
tracking more information of injection path, it needs to show upper
caller's name. This patch supports that ability.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
We should record updating status of inode only for living inode, for those
unlinked inode it needs to clear its ino cache, otherwise after the ino
was been reused, it will cause unneeded node page writing during ->fsync.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
This patch tries to make more clean inodes when flushing dirty inodes in
checkpoint.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
This is to avoid no free segment bug during checkpoint caused by a number of
dirty inodes.
The case was reported by Chao like this.
1. mount with lazytime option
2. fill 4k file until disk is full
3. sync filesystem
4. read all files in the image
5. umount
In this case, we actually don't need to flush dirty inode to inode page during
checkpoint.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
We don't need to keep incomplete created inode in cache, so if we fail to
add link into directory during new inode creation, it's better to set
nlink of inode to zero, then we can evict inode immediately. Otherwise
release of nid belong to inode will be delayed until inode cache is being
shrunk, it may cause a seemingly endless loop while allocating free nids
in time of testing generic/269 case of fstest suit.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: add update_inode_page to fix kernel panic]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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In order to avoid racing problem, make largest extent cache being updated
under lock.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
Previously, we only support global fault injection configuration, so that
when we configure type/rate of fault injection through sysfs, mount
option, it will influence all f2fs partition which is being used.
It is not make sence, since it will be not convenient if developer want
to test separated partitions with different fault injection rate/type
simultaneously, also it's not possible to enable fault injection in one
partition and disable fault injection in other one.
>From now on, we move global configuration of fault injection in module
into per-superblock, hence injection testing can be more flexible.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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This patch gives another chances during roll-forward recovery regarding to
-ENOMEM.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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Let's check inode's dirtiness before calling mark_inode_dirty.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
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Let's store orphan inode pages right away.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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FI_DIRTY_INODE flag is not covered by inode page lock, so it can be unset
at any time like below.
Thread #1 Thread #2
- lock_page(ipage)
- update i_fields
- update i_size/i_blocks/and so on
- set FI_DIRTY_INODE
- reset FI_DIRTY_INODE
- set_page_dirty(ipage)
In this case, we can lose the latest i_field information.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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We don't need lock parameter, which is always true.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
|
|
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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If roll-forward recovery can recover i_size, we don't need to update inode's
metadata during fsync.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch registers all the inodes which have dirty metadata to sync when
checkpoint is doing.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch calls mark_inode_dirty_sync() for the following on-disk inode
changes.
-> largest
-> ctime/mtime/atime
-> i_current_depth
-> i_xattr_nid
-> i_pino
-> i_advise
-> i_flags
-> i_mode
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch refactors to use inode pointer for set_inode_flag and
clear_inode_flag.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Given errors, this patch flushes pending bios as soon as possible.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Even if an inode failed to release its blocks, it should be kept in an orphan
inode list, so it will be released later.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch modifies to retry truncating node blocks in -ENOMEM case.
Signed-off-by: Hou Pengyang <houpengyang@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch fixes a couple of bugs regarding to orphan inodes when handling
errors.
This tries to
- call alloc_nid_done with add_orphan_inode in handle_failed_inode
- let truncate blocks in f2fs_evict_inode
- not make a bad inode due to i_mode change
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch adds the renamed functions moved from the f2fs crypto files.
1. definitions for per-file encryption used by ext4 and f2fs.
2. crypto.c for encrypt/decrypt functions
a. IO preparation:
- fscrypt_get_ctx / fscrypt_release_ctx
b. before IOs:
- fscrypt_encrypt_page
- fscrypt_decrypt_page
- fscrypt_zeroout_range
c. after IOs:
- fscrypt_decrypt_bio_pages
- fscrypt_pullback_bio_page
- fscrypt_restore_control_page
3. policy.c supporting context management.
a. For ioctls:
- fscrypt_process_policy
- fscrypt_get_policy
b. For context permission
- fscrypt_has_permitted_context
- fscrypt_inherit_context
4. keyinfo.c to handle permissions
- fscrypt_get_encryption_info
- fscrypt_free_encryption_info
5. fname.c to support filename encryption
a. general wrapper functions
- fscrypt_fname_disk_to_usr
- fscrypt_fname_usr_to_disk
- fscrypt_setup_filename
- fscrypt_free_filename
b. specific filename handling functions
- fscrypt_fname_alloc_buffer
- fscrypt_fname_free_buffer
6. Makefile and Kconfig
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Ildar Muslukhov <ildarm@google.com>
Signed-off-by: Uday Savagaonkar <savagaon@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Split drop_inmem_pages from commit_inmem_pages for code readability,
and prepare for the following modification.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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In write_begin, if storage supports stable_page, we don't need to wait for
writeback to update its contents.
This patch introduces to use wait_for_stable_page instead of
wait_on_page_writeback.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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