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2020-09-23PM: mm: cleanup swsusp_swap_checkChristoph Hellwig1-6/+4
Use blkdev_get_by_dev instead of bdget + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23mm: split swap_type_ofChristoph Hellwig4-40/+35
swap_type_of is used for two entirely different purposes: (1) check what swap type a given device/offset corresponds to (2) find the first available swap device that can be written to Mixing both in a single function creates an unreadable mess. Create two separate functions instead, and switch both to pass a dev_t instead of a struct block_device to further simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23PM: rewrite is_hibernate_resume_dev to not require an inodeChristoph Hellwig3-9/+9
Just check the dev_t to help simplifying the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23mm: cleanup claim_swapfileChristoph Hellwig1-3/+3
Use blkdev_get_by_dev instead of bdgrab + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23ocfs2: cleanup o2hb_region_dev_storeChristoph Hellwig1-18/+10
Use blkdev_get_by_dev instead of igrab (aka open coded bdgrab) + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23dasd: cleanup dasd_scan_partitionsChristoph Hellwig1-11/+4
Use blkdev_get_by_dev instead of bdget_disk + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23raw: don't keep unopened block device aroundChristoph Hellwig1-32/+19
Turn binding into a normal dev_t as the struct block device doesn't buy us anything and use blkdev_open_by_dev to actually open it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23zram: cleanup backing_dev_storeChristoph Hellwig1-3/+4
Use blkdev_get_by_dev instead of bdgrab + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23pktcdvd: use blkdev_get_by_dev instead of open coding itChristoph Hellwig1-14/+11
Replace bdget + blkdev_get by blkdev_get_by_dev. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23pktcdvd: remove the if 0'ed pkt_start_recovery functionChristoph Hellwig1-65/+2
Remove code which has been dead since the initial commit. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: cleanup blkdev_bszsetChristoph Hellwig1-7/+6
Use blkdev_get_by_dev instead of bdgrab + blkdev_get. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: cleanup partition scanning in register_diskChristoph Hellwig1-19/+14
Use blkdev_get_by_dev instead of open coding it using bdget_disk + blkdev_get, and split the code to read the partition table into a separate helper to make it a little more obvious. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: move the NEED_PART_SCAN flag to struct gendiskChristoph Hellwig6-14/+13
We can only scan for partitions on the whole disk, so move the flag from struct block_device to struct gendisk. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: allow 'chunk_sectors' to be non-power-of-2Mike Snitzer2-9/+13
It is possible, albeit more unlikely, for a block device to have a non power-of-2 for chunk_sectors (e.g. 10+2 RAID6 with 128K chunk_sectors, which results in a full-stripe size of 1280K. This causes the RAID6's io_opt to be advertised as 1280K, and a stacked device _could_ then be made to use a blocksize, aka chunk_sectors, that matches non power-of-2 io_opt of underlying RAID6 -- resulting in stacked device's chunk_sectors being a non power-of-2). Update blk_queue_chunk_sectors() and blk_max_size_offset() to accommodate drivers that need a non power-of-2 chunk_sectors. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: use lcm_not_zero() when stacking chunk_sectorsMike Snitzer1-4/+8
Like 'io_opt', blk_stack_limits() should stack 'chunk_sectors' using lcm_not_zero() rather than min_not_zero() -- otherwise the final 'chunk_sectors' could result in sub-optimal alignment of IO to component devices in the IO stack. Also, if 'chunk_sectors' isn't a multiple of 'physical_block_size' then it is a bug in the driver and the device should be flagged as 'misaligned'. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: fix bmd->is_null_mapped initializationChristoph Hellwig1-2/+1
bmd is allocated using kmalloc in bio_alloc_map_data, so make sure is_null_mapped is properly initialized to false for the !null_mapped case. Fixes: f3256075ba49 ("block: remove the BIO_NULL_MAPPED flag") Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23block: drop double zeroingJulia Lawall1-1/+1
sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x; @@ x = - kzalloc + kmalloc (...) ... sg_init_table(x,...) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-23Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds3-15/+14
Pull vfs fixes from Al Viro: "No common topic, just assorted fixes" * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fuse: fix the ->direct_IO() treatment of iov_iter fs: fix cast in fsparam_u32hex() macro vboxsf: Fix the check for the old binary mount-arguments struct
2020-09-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds165-824/+1705
Pull networking fixes from Jakub Kicinski: - fix failure to add bond interfaces to a bridge, the offload-handling code was too defensive there and recent refactoring unearthed that. Users complained (Ido) - fix unnecessarily reflecting ECN bits within TOS values / QoS marking in TCP ACK and reset packets (Wei) - fix a deadlock with bpf iterator. Hopefully we're in the clear on this front now... (Yonghong) - BPF fix for clobbering r2 in bpf_gen_ld_abs (Daniel) - fix AQL on mt76 devices with FW rate control and add a couple of AQL issues in mac80211 code (Felix) - fix authentication issue with mwifiex (Maximilian) - WiFi connectivity fix: revert IGTK support in ti/wlcore (Mauro) - fix exception handling for multipath routes via same device (David Ahern) - revert back to a BH spin lock flavor for nsid_lock: there are paths which do require the BH context protection (Taehee) - fix interrupt / queue / NAPI handling in the lantiq driver (Hauke) - fix ife module load deadlock (Cong) - make an adjustment to netlink reply message type for code added in this release (the sole change touching uAPI here) (Michal) - a number of fixes for small NXP and Microchip switches (Vladimir) [ Pull request acked by David: "you can expect more of this in the future as I try to delegate more things to Jakub" ] * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (167 commits) net: mscc: ocelot: fix some key offsets for IP4_TCP_UDP VCAP IS2 entries net: dsa: seville: fix some key offsets for IP4_TCP_UDP VCAP IS2 entries net: dsa: felix: fix some key offsets for IP4_TCP_UDP VCAP IS2 entries inet_diag: validate INET_DIAG_REQ_PROTOCOL attribute net: bridge: br_vlan_get_pvid_rcu() should dereference the VLAN group under RCU net: Update MAINTAINERS for MediaTek switch driver net/mlx5e: mlx5e_fec_in_caps() returns a boolean net/mlx5e: kTLS, Avoid kzalloc(GFP_KERNEL) under spinlock net/mlx5e: kTLS, Fix leak on resync error flow net/mlx5e: kTLS, Add missing dma_unmap in RX resync net/mlx5e: kTLS, Fix napi sync and possible use-after-free net/mlx5e: TLS, Do not expose FPGA TLS counter if not supported net/mlx5e: Fix using wrong stats_grps in mlx5e_update_ndo_stats() net/mlx5e: Fix multicast counter not up-to-date in "ip -s" net/mlx5e: Fix endianness when calculating pedit mask first bit net/mlx5e: Enable adding peer miss rules only if merged eswitch is supported net/mlx5e: CT: Fix freeing ct_label mapping net/mlx5e: Fix memory leak of tunnel info when rule under multipath not ready net/mlx5e: Use synchronize_rcu to sync with NAPI net/mlx5e: Use RCU to protect rq->xdp_prog ...
2020-09-23Merge tag 'io_uring-5.9-2020-09-22' of git://git.kernel.dk/linux-blockLinus Torvalds2-13/+40
Pull io_uring fixes from Jens Axboe: "A few fixes - most of them regression fixes from this cycle, but also a few stable heading fixes, and a build fix for the included demo tool since some systems now actually have gettid() available" * tag 'io_uring-5.9-2020-09-22' of git://git.kernel.dk/linux-block: io_uring: fix openat/openat2 unified prep handling io_uring: mark statx/files_update/epoll_ctl as non-SQPOLL tools/io_uring: fix compile breakage io_uring: don't use retry based buffered reads for non-async bdev io_uring: don't re-setup vecs/iter in io_resumit_prep() is already there io_uring: don't run task work on an exiting task io_uring: drop 'ctx' ref on task work cancelation io_uring: grab any needed state during defer prep
2020-09-23Merge tag 'block-5.9-2020-09-22' of git://git.kernel.dk/linux-blockLinus Torvalds5-2/+28
Pull block fixes from Jens Axboe: "A few NVMe fixes, and a dasd write zero fix" * tag 'block-5.9-2020-09-22' of git://git.kernel.dk/linux-block: nvmet: get transport reference for passthru ctrl nvme-core: get/put ctrl and transport module in nvme_dev_open/release() nvme-tcp: fix kconfig dependency warning when !CRYPTO nvme-pci: disable the write zeros command for Intel 600P/P3100 s390/dasd: Fix zero write for FBA devices
2020-09-22Merge tag 'trace-v5.9-rc5' of ↵Linus Torvalds7-29/+61
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: - Check kprobe is enabled before unregistering from ftrace as it isn't registered when disabled. - Remove kprobes enabled via command-line that is on init text when freed. - Add missing RCU synchronization for ftrace trampoline symbols removed from kallsyms. - Free trampoline on error path if ftrace_startup() fails. - Give more space for the longer PID numbers in trace output. - Fix a possible double free in the histogram code. - A couple of fixes that were discovered by sparse. * tag 'trace-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: bootconfig: init: make xbc_namebuf static kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot tracing: fix double free ftrace: Let ftrace_enable_sysctl take a kernel pointer buffer tracing: Make the space reserved for the pid wider ftrace: Fix missing synchronize_rcu() removing trampoline from kallsyms ftrace: Free the trampoline when ftrace_startup() fails kprobes: Fix to check probe enabled before disarm_kprobe_ftrace()
2020-09-22Merge branch 'Fix-broken-tc-flower-rules-for-mscc_ocelot-switches'David S. Miller3-24/+24
Vladimir Oltean says: ==================== Fix broken tc-flower rules for mscc_ocelot switches All 3 switch drivers from the Ocelot family have the same bug in the VCAP IS2 key offsets, which is that some keys are in the incorrect order. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net: mscc: ocelot: fix some key offsets for IP4_TCP_UDP VCAP IS2 entriesVladimir Oltean1-8/+8
The IS2 IP4_TCP_UDP key offsets do not correspond to the VSC7514 datasheet. Whether they work or not is unknown to me. On VSC9959 and VSC9953, with the same mistake and same discrepancy from the documentation, tc-flower src_port and dst_port rules did not work, so I am assuming the same is true here. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net: dsa: seville: fix some key offsets for IP4_TCP_UDP VCAP IS2 entriesVladimir Oltean1-8/+8
Since these were copied from the Felix VCAP IS2 code, and only the offsets were adjusted, the order of the bit fields is still wrong. Fix it. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net: dsa: felix: fix some key offsets for IP4_TCP_UDP VCAP IS2 entriesXiaoliang Yang1-8/+8
Some of the IS2 IP4_TCP_UDP keys are not correct, like L4_DPORT, L4_SPORT and other L4 keys. This prevents offloaded tc-flower rules from matching on src_port and dst_port for TCP and UDP packets. Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22inet_diag: validate INET_DIAG_REQ_PROTOCOL attributeEric Dumazet1-5/+15
User space could send an invalid INET_DIAG_REQ_PROTOCOL attribute as caught by syzbot. BUG: KMSAN: uninit-value in inet_diag_lock_handler net/ipv4/inet_diag.c:55 [inline] BUG: KMSAN: uninit-value in __inet_diag_dump+0x58c/0x720 net/ipv4/inet_diag.c:1147 CPU: 0 PID: 8505 Comm: syz-executor174 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:219 inet_diag_lock_handler net/ipv4/inet_diag.c:55 [inline] __inet_diag_dump+0x58c/0x720 net/ipv4/inet_diag.c:1147 inet_diag_dump_compat+0x2a5/0x380 net/ipv4/inet_diag.c:1254 netlink_dump+0xb73/0x1cb0 net/netlink/af_netlink.c:2246 __netlink_dump_start+0xcf2/0xea0 net/netlink/af_netlink.c:2354 netlink_dump_start include/linux/netlink.h:246 [inline] inet_diag_rcv_msg_compat+0x5da/0x6c0 net/ipv4/inet_diag.c:1288 sock_diag_rcv_msg+0x24f/0x620 net/core/sock_diag.c:256 netlink_rcv_skb+0x6d7/0x7e0 net/netlink/af_netlink.c:2470 sock_diag_rcv+0x63/0x80 net/core/sock_diag.c:275 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x11c8/0x1490 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x173a/0x1840 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:671 [inline] ____sys_sendmsg+0xc82/0x1240 net/socket.c:2353 ___sys_sendmsg net/socket.c:2407 [inline] __sys_sendmsg+0x6d1/0x820 net/socket.c:2440 __do_sys_sendmsg net/socket.c:2449 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2447 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2447 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441389 Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff3b02ce98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441389 RDX: 0000000000000000 RSI: 0000000020001500 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402130 R13: 00000000004021c0 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:143 [inline] kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:126 kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:80 slab_alloc_node mm/slub.c:2907 [inline] __kmalloc_node_track_caller+0x9aa/0x12f0 mm/slub.c:4511 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0x35f/0xb30 net/core/skbuff.c:210 alloc_skb include/linux/skbuff.h:1094 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1176 [inline] netlink_sendmsg+0xdb9/0x1840 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:671 [inline] ____sys_sendmsg+0xc82/0x1240 net/socket.c:2353 ___sys_sendmsg net/socket.c:2407 [inline] __sys_sendmsg+0x6d1/0x820 net/socket.c:2440 __do_sys_sendmsg net/socket.c:2449 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2447 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2447 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 3f935c75eb52 ("inet_diag: support for wider protocol numbers") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Christoph Paasch <cpaasch@apple.com> Cc: Mat Martineau <mathew.j.martineau@linux.intel.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net: bridge: br_vlan_get_pvid_rcu() should dereference the VLAN group under RCUVladimir Oltean1-10/+17
When calling the RCU brother of br_vlan_get_pvid(), lockdep warns: ============================= WARNING: suspicious RCU usage 5.9.0-rc3-01631-g13c17acb8e38-dirty #814 Not tainted ----------------------------- net/bridge/br_private.h:1054 suspicious rcu_dereference_protected() usage! Call trace: lockdep_rcu_suspicious+0xd4/0xf8 __br_vlan_get_pvid+0xc0/0x100 br_vlan_get_pvid_rcu+0x78/0x108 The warning is because br_vlan_get_pvid_rcu() calls nbp_vlan_group() which calls rtnl_dereference() instead of rcu_dereference(). In turn, rtnl_dereference() calls rcu_dereference_protected() which assumes operation under an RCU write-side critical section, which obviously is not the case here. So, when the incorrect primitive is used to access the RCU-protected VLAN group pointer, READ_ONCE() is not used, which may cause various unexpected problems. I'm sad to say that br_vlan_get_pvid() and br_vlan_get_pvid_rcu() cannot share the same implementation. So fix the bug by splitting the 2 functions, and making br_vlan_get_pvid_rcu() retrieve the VLAN groups under proper locking annotations. Fixes: 7582f5b70f9a ("bridge: add br_vlan_get_pvid_rcu()") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22Merge tag 'mlx5-fixes-2020-09-18' of ↵David S. Miller20-180/+200
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5 fixes-2020-09-18 This series introduces some fixes to mlx5 driver. Please pull and let me know if there is any problem. v1->v2: Remove missing patch from -stable list. For -stable v5.1 ('net/mlx5: Fix FTE cleanup') For -stable v5.3 ('net/mlx5e: TLS, Do not expose FPGA TLS counter if not supported') ('net/mlx5e: Enable adding peer miss rules only if merged eswitch is supported') For -stable v5.7 ('net/mlx5e: Fix memory leak of tunnel info when rule under multipath not ready') For -stable v5.8 ('net/mlx5e: Use RCU to protect rq->xdp_prog') ('net/mlx5e: Fix endianness when calculating pedit mask first bit') ('net/mlx5e: Use synchronize_rcu to sync with NAPI') ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net: Update MAINTAINERS for MediaTek switch driverSean Wang1-0/+1
Update maintainers for MediaTek switch driver with Landen Chao who is familiar with MediaTek MT753x switch devices and will help maintenance from the vendor side. Cc: Steven Liu <steven.liu@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Landen Chao <Landen.Chao@mediatek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22net/mlx5e: mlx5e_fec_in_caps() returns a booleanSaeed Mahameed1-5/+2
Returning errno is a bug, fix that. Also fixes smatch warnings: drivers/net/ethernet/mellanox/mlx5/core/en/port.c:453 mlx5e_fec_in_caps() warn: signedness bug returning '(-95)' Fixes: 2132b71f78d2 ("net/mlx5e: Advertise globaly supported FEC modes") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Reviewed-by: Aya Levin <ayal@nvidia.com>
2020-09-22net/mlx5e: kTLS, Avoid kzalloc(GFP_KERNEL) under spinlockSaeed Mahameed1-15/+10
The spinlock only needed when accessing the channel's icosq, grab the lock after the buf allocation in resync_post_get_progress_params() to avoid kzalloc(GFP_KERNEL) in atomic context. Fixes: 0419d8c9d8f8 ("net/mlx5e: kTLS, Add kTLS RX resync support") Reported-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
2020-09-22net/mlx5e: kTLS, Fix leak on resync error flowSaeed Mahameed1-2/+6
Resync progress params buffer and dma weren't released on error, Add missing error unwinding for resync_post_get_progress_params(). Fixes: 0419d8c9d8f8 ("net/mlx5e: kTLS, Add kTLS RX resync support") Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
2020-09-22net/mlx5e: kTLS, Add missing dma_unmap in RX resyncSaeed Mahameed1-3/+5
Progress params dma address is never unmapped, unmap it when completion handling is over. Fixes: 0419d8c9d8f8 ("net/mlx5e: kTLS, Add kTLS RX resync support") Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
2020-09-22net/mlx5e: kTLS, Fix napi sync and possible use-after-freeTariq Toukan1-1/+1
Using synchronize_rcu() is sufficient to wait until running NAPI quits. See similar upstream fix with detailed explanation: ("net/mlx5e: Use synchronize_rcu to sync with NAPI") This change also fixes a possible use-after-free as the NAPI might be already released at this stage. Fixes: 0419d8c9d8f8 ("net/mlx5e: kTLS, Add kTLS RX resync support") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: TLS, Do not expose FPGA TLS counter if not supportedTariq Toukan1-4/+8
The set of TLS TX global SW counters in mlx5e_tls_sw_stats_desc is updated from all rings by using atomic ops. This set of stats is used only in the FPGA TLS use case, not in the Connect-X TLS one, where regular per-ring counters are used. Do not expose them in the Connect-X use case, as this would cause counter duplication. For example, tx_tls_drop_no_sync_data would appear twice in the ethtool stats. Fixes: d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2020-09-22net/mlx5e: Fix using wrong stats_grps in mlx5e_update_ndo_stats()Alaa Hleihel6-15/+17
The cited commit started to reuse function mlx5e_update_ndo_stats() for the representors as well. However, the function is hard-coded to work on mlx5e_nic_stats_grps only. Due to this issue, the representors statistics were not updated in the output of "ip -s". Fix it to work with the correct group by extracting it from the caller's profile. Also, while at it and since this function became generic, move it to en_stats.c and rename it accordingly. Fixes: 8a236b15144b ("net/mlx5e: Convert rep stats to mlx5e_stats_grp-based infra") Signed-off-by: Alaa Hleihel <alaa@nvidia.com> Reviewed-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: Fix multicast counter not up-to-date in "ip -s"Ron Diskin4-7/+12
Currently the FW does not generate events for counters other than error counters. Unlike ".get_ethtool_stats", ".ndo_get_stats64" (which ip -s uses) might run in atomic context, while the FW interface is non atomic. Thus, 'ip' is not allowed to issue FW commands, so it will only display cached counters in the driver. Add a SW counter (mcast_packets) in the driver to count rx multicast packets. The counter also counts broadcast packets, as we consider it a special case of multicast. Use the counter value when calling "ip -s"/"ifconfig". Fixes: f62b8bb8f2d3 ("net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality") Signed-off-by: Ron Diskin <rondi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Moshe Shemesh <moshe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: Fix endianness when calculating pedit mask first bitMaor Dickman1-13/+21
The field mask value is provided in network byte order and has to be converted to host byte order before calculating pedit mask first bit. Fixes: 88f30bbcbaaa ("net/mlx5e: Bit sized fields rewrite support") Signed-off-by: Maor Dickman <maord@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2020-09-22net/mlx5e: Enable adding peer miss rules only if merged eswitch is supportedMaor Dickman1-24/+28
The cited commit creates peer miss group during switchdev mode initialization in order to handle miss packets correctly while in VF LAG mode. This is done regardless of FW support of such groups which could cause rules setups failure later on. Fix by adding FW capability check before creating peer groups/rule. Fixes: ac004b832128 ("net/mlx5e: E-Switch, Add peer miss rules") Signed-off-by: Maor Dickman <maord@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Raed Salem <raeds@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: CT: Fix freeing ct_label mappingRoi Dayan3-17/+36
Add missing mapping remove call when removing ct rule, as the mapping was allocated when ct rule was adding with ct_label. Also there is a missing mapping remove call in error flow. Fixes: 54b154ecfb8c ("net/mlx5e: CT: Map 128 bits labels to 32 bit map ID") Signed-off-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: Fix memory leak of tunnel info when rule under multipath not readyJianbo Liu1-4/+1
When deleting vxlan flow rule under multipath, tun_info in parse_attr is not freed when the rule is not ready. Fixes: ef06c9ee8933 ("net/mlx5e: Allow one failure when offloading tc encap rules under multipath") Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: Use synchronize_rcu to sync with NAPIMaxim Mikityanskiy5-36/+22
As described in the previous commit, napi_synchronize doesn't quite fit the purpose when we just need to wait until the currently running NAPI quits. Its implementation waits until NAPI is not running by polling and waiting for 1ms in between. In cases where we need to deactivate one queue (e.g., recovery flows) or where we deactivate them one-by-one (deactivate channel flow), we may get stuck in napi_synchronize forever if other queues keep NAPI active, causing a soft lockup. Depending on kernel configuration (CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC), it may result in a kernel panic. To fix the issue, use synchronize_rcu to wait for NAPI to quit, and wrap the whole NAPI in rcu_read_lock. Fixes: acc6c5953af1 ("net/mlx5e: Split open/close channels to stages") Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5e: Use RCU to protect rq->xdp_progMaxim Mikityanskiy3-30/+27
Currently, the RQs are temporarily deactivated while hot-replacing the XDP program, and napi_synchronize is used to make sure rq->xdp_prog is not in use. However, napi_synchronize is not ideal: instead of waiting till the end of a NAPI cycle, it polls and waits until NAPI is not running, sleeping for 1ms between the periodic checks. Under heavy workloads, this loop will never end, which may even lead to a kernel panic if the kernel detects the hangup. Such workloads include XSK TX and possibly also heavy RX (XSK or normal). The fix is inspired by commit 326fe02d1ed6 ("net/mlx4_en: protect ring->xdp_prog with rcu_read_lock"). As mlx5e_xdp_handle is already protected by rcu_read_lock, and bpf_prog_put uses call_rcu to free the program, there is no need for additional synchronization if proper RCU functions are used to access the pointer. This patch converts all accesses to rq->xdp_prog to use RCU functions. Fixes: 86994156c736 ("net/mlx5e: XDP fast RX drop bpf programs support") Fixes: db05815b36cb ("net/mlx5e: Add XSK zero-copy support") Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-09-22net/mlx5: Fix FTE cleanupMaor Gottlieb1-4/+4
Currently, when an FTE is allocated, its refcount is decreased to 0 with the purpose it will not be a stand alone steering object and every rule (destination) of the FTE would increase the refcount. When mlx5_cleanup_fs is called while not all rules were deleted by the steering users, it hit refcount underflow on the FTE once clean_tree calls to tree_remove_node after the deleted rules already decreased the refcount to 0. FTE is no longer destroyed implicitly when the last rule (destination) is deleted. mlx5_del_flow_rules avoids it by increasing the refcount on the FTE and destroy it explicitly after all rules were deleted. So we can avoid the refcount underflow by making FTE as stand alone object. In addition need to set del_hw_func to FTE so the HW object will be destroyed when the FTE is deleted from the cleanup_tree flow. refcount_t: underflow; use-after-free. WARNING: CPU: 2 PID: 15715 at lib/refcount.c:28 refcount_warn_saturate+0xd9/0xe0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Call Trace: tree_put_node+0xf2/0x140 [mlx5_core] clean_tree+0x4e/0xf0 [mlx5_core] clean_tree+0x4e/0xf0 [mlx5_core] clean_tree+0x4e/0xf0 [mlx5_core] clean_tree+0x5f/0xf0 [mlx5_core] clean_tree+0x4e/0xf0 [mlx5_core] clean_tree+0x5f/0xf0 [mlx5_core] mlx5_cleanup_fs+0x26/0x270 [mlx5_core] mlx5_unload+0x2e/0xa0 [mlx5_core] mlx5_unload_one+0x51/0x120 [mlx5_core] mlx5_devlink_reload_down+0x51/0x90 [mlx5_core] devlink_reload+0x39/0x120 ? devlink_nl_cmd_reload+0x43/0x220 genl_rcv_msg+0x1e4/0x420 ? genl_family_rcv_msg_attrs_parse+0x100/0x100 netlink_rcv_skb+0x47/0x110 genl_rcv+0x24/0x40 netlink_unicast+0x217/0x2f0 netlink_sendmsg+0x30f/0x430 sock_sendmsg+0x30/0x40 __sys_sendto+0x10e/0x140 ? handle_mm_fault+0xc4/0x1f0 ? do_page_fault+0x33f/0x630 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x48/0x130 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 718ce4d601db ("net/mlx5: Consolidate update FTE for all removal changes") Fixes: bd71b08ec2ee ("net/mlx5: Support multiple updates of steering rules in parallel") Signed-off-by: Maor Gottlieb <maorg@nvidia.com> Reviewed-by: Mark Bloch <mbloch@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2020-09-22Merge tag 'mac80211-for-net-2020-09-21' of ↵David S. Miller7-16/+28
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Just a few fixes: * fix using HE on 2.4 GHz * AQL (airtime queue limit) estimation & VHT160 fix * do not oversize A-MPDUs if local capability is smaller than peer's * fix radiotap on 6 GHz to not put 2.4 GHz flag * fix Kconfig for lib80211 * little fixlet for 6 GHz channel number / frequency conversion ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22ipv6: route: convert comma to semicolonXu Wang1-1/+1
Replace a comma between expression statements by a semicolon. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-21sfc: Fix error code in probeDan Carpenter1-0/+1
This failure path should return a negative error code but it currently returns success. Fixes: 51b35a454efd ("sfc: skeleton EF100 PF driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-21Merge branch 'rcu/urgent' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull RCU fix from Paul McKenney: "This contains a single commit that fixes a bug that was introduced in the last merge window. This bug causes a compiler warning complaining about show_rcu_tasks_classic_gp_kthread() being an unused static function in !SMP kernels. The fix is straightforward, just adding an 'inline' to make this a static inline function, thus avoiding the warning. This bug was reported by Laurent Pinchart, who would like it fixed sooner rather than later" * 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: rcu-tasks: Prevent complaints of unused show_rcu_tasks_classic_gp_kthread()
2020-09-21Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds5-25/+37
Pull kvm fixes from Paolo Bonzini: "ARM: - fix fault on page table writes during instruction fetch s390: - doc improvement x86: - The obvious patches are always the ones that turn out to be completely broken. /me hangs his head in shame" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: Revert "KVM: Check the allocation of pv cpu mask" KVM: arm64: Remove S1PTW check from kvm_vcpu_dabt_iswrite() KVM: arm64: Assume write fault on S1PTW permission fault on instruction fetch docs: kvm: add documentation for KVM_CAP_S390_DIAG318
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