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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-03-17 04:55:52 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-03-22 05:34:10 +0300 |
| commit | 8c242db9b8c01b252290e23827163787f07e01d1 (patch) | |
| tree | 1a250cbfbdf0313f5297536872166862c3143c89 /include/trace/events/f2fs.h | |
| parent | aa51d08a11784a431266055d58d28b4c4c76a79e (diff) | |
| download | linux-8c242db9b8c01b252290e23827163787f07e01d1.tar.xz | |
f2fs: fix stale ATOMIC_WRITTEN_PAGE private pointer
When I forced to enable atomic operations intentionally, I could hit the below
panic, since we didn't clear page->private in f2fs_invalidate_page called by
file truncation.
The panic occurs due to NULL mapping having page->private.
BUG: unable to handle kernel paging request at ffffffffffffffff
IP: drop_buffers+0x38/0xe0
PGD 5d00c067
PUD 5d00e067
PMD 0
CPU: 3 PID: 1648 Comm: fsstress Tainted: G D OE 4.10.0+ #5
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
task: ffff9151952863c0 task.stack: ffffaaec40db4000
RIP: 0010:drop_buffers+0x38/0xe0
RSP: 0018:ffffaaec40db74c8 EFLAGS: 00010292
Call Trace:
? page_referenced+0x8b/0x170
try_to_free_buffers+0xc5/0xe0
try_to_release_page+0x49/0x50
shrink_page_list+0x8bc/0x9f0
shrink_inactive_list+0x1dd/0x500
? shrink_active_list+0x2c0/0x430
shrink_node_memcg+0x5eb/0x7c0
shrink_node+0xe1/0x320
do_try_to_free_pages+0xef/0x2e0
try_to_free_pages+0xe9/0x190
__alloc_pages_slowpath+0x390/0xe70
__alloc_pages_nodemask+0x291/0x2b0
alloc_pages_current+0x95/0x140
__page_cache_alloc+0xc4/0xe0
pagecache_get_page+0xab/0x2a0
grab_cache_page_write_begin+0x20/0x40
get_read_data_page+0x2e6/0x4c0 [f2fs]
? f2fs_mark_inode_dirty_sync+0x16/0x30 [f2fs]
? truncate_data_blocks_range+0x238/0x2b0 [f2fs]
get_lock_data_page+0x30/0x190 [f2fs]
__exchange_data_block+0xaaf/0xf40 [f2fs]
f2fs_fallocate+0x418/0xd00 [f2fs]
vfs_fallocate+0x157/0x220
SyS_fallocate+0x48/0x80
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Chao Yu: use INMEM_INVALIDATE for better tracing]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/trace/events/f2fs.h')
| -rw-r--r-- | include/trace/events/f2fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index c80fcad0a6c9..96139021b6bc 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -15,6 +15,7 @@ TRACE_DEFINE_ENUM(META); TRACE_DEFINE_ENUM(META_FLUSH); TRACE_DEFINE_ENUM(INMEM); TRACE_DEFINE_ENUM(INMEM_DROP); +TRACE_DEFINE_ENUM(INMEM_INVALIDATE); TRACE_DEFINE_ENUM(IPU); TRACE_DEFINE_ENUM(OPU); TRACE_DEFINE_ENUM(CURSEG_HOT_DATA); @@ -51,6 +52,7 @@ TRACE_DEFINE_ENUM(CP_DISCARD); { META_FLUSH, "META_FLUSH" }, \ { INMEM, "INMEM" }, \ { INMEM_DROP, "INMEM_DROP" }, \ + { INMEM_INVALIDATE, "INMEM_INVALIDATE" }, \ { INMEM_REVOKE, "INMEM_REVOKE" }, \ { IPU, "IN-PLACE" }, \ { OPU, "OUT-OF-PLACE" }) |