Dmitry Monakhov 7f851311e4 bio-integrity: Do not allocate integrity context for bio w/o data ...

[ Upstream commit 3116a23bb30272d74ea81baf5d0ee23f602dd15b ]

If bio has no data, such as ones from blkdev_issue_flush(),
then we have nothing to protect.

This patch prevent bugon like follows:

kfree_debugcheck: out of range ptr ac1fa1d106742a5ah
kernel BUG at mm/slab.c:2773!
invalid opcode: 0000 [#1] SMP
Modules linked in: bcache
CPU: 0 PID: 4428 Comm: xfs_io Tainted: G        W       4.11.0-rc4-ext4-00041-g2ef0043-dirty #43
Hardware name: Virtuozzo KVM, BIOS seabios-1.7.5-11.vz7.4 04/01/2014
task: ffff880137786440 task.stack: ffffc90000ba8000
RIP: 0010:kfree_debugcheck+0x25/0x2a
RSP: 0018:ffffc90000babde0 EFLAGS: 00010082
RAX: 0000000000000034 RBX: ac1fa1d106742a5a RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88013f3ccb40
RBP: ffffc90000babde8 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000fcb76420 R11: 00000000725172ed R12: 0000000000000282
R13: ffffffff8150e766 R14: ffff88013a145e00 R15: 0000000000000001
FS:  00007fb09384bf40(0000) GS:ffff88013f200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0172f9e40 CR3: 0000000137fa9000 CR4: 00000000000006f0
Call Trace:
 kfree+0xc8/0x1b3
 bio_integrity_free+0xc3/0x16b
 bio_free+0x25/0x66
 bio_put+0x14/0x26
 blkdev_issue_flush+0x7a/0x85
 blkdev_fsync+0x35/0x42
 vfs_fsync_range+0x8e/0x9f
 vfs_fsync+0x1c/0x1e
 do_fsync+0x31/0x4a
 SyS_fsync+0x10/0x14
 entry_SYSCALL_64_fastpath+0x1f/0xc2

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-13 19:48:18 +02:00

..

partitions

partitions/msdos: Unable to mount UFS 44bsd partitions

2018-04-08 12:12:42 +02:00

badblocks.c

badblocks: fix wrong return value in badblocks_set if badblocks are disabled

2017-12-20 10:07:29 +01:00

bio-integrity.c

bio-integrity: Do not allocate integrity context for bio w/o data

2018-04-13 19:48:18 +02:00

bio.c

Fix slab name "biovec-(1<<(21-12))"

2018-04-08 12:13:00 +02:00

blk-cgroup.c

blkcg: fix double free of new_blkg in blkcg_init_queue

2018-03-22 09:17:35 +01:00

blk-core.c

block: wake up all tasks blocked in get_request()

2017-12-14 09:28:23 +01:00

blk-exec.c

block: Fix spelling in a source code comment

2016-07-20 21:28:22 -06:00

blk-flush.c

block: flush: fix IO hang in case of flood fua req

2016-10-26 07:49:27 -06:00

blk-integrity.c

block: fix blk_integrity_register to use template's interval_exp if not 0

2017-05-20 14:28:36 +02:00

blk-ioc.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

blk-lib.c

block: require write_same and discard requests align to logical block size

2016-10-11 15:06:30 -07:00

blk-map.c

blk_rq_map_user_iov: fix error override

2018-02-25 11:05:42 +01:00

blk-merge.c

block: make sure a big bio is split into at most 256 bvecs

2016-08-24 08:17:24 -06:00

blk-mq-cpumap.c

blk-mq: allow the driver to pass in a queue mapping

2016-09-15 08:42:03 -06:00

blk-mq-pci.c

blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL

2017-08-24 17:12:20 -07:00

blk-mq-sysfs.c

blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue()

2017-12-14 09:28:21 +01:00

blk-mq-tag.c

blk-mq: Fix tagset reinit in the presence of cpu hot-unplug

2017-12-20 10:07:20 +01:00

blk-mq-tag.h

Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block

2016-10-09 17:29:33 -07:00

blk-mq.c

blk-mq: fix race between updating nr_hw_queues and switching io sched

2018-04-13 19:48:11 +02:00

blk-mq.h

blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue()

2017-12-14 09:28:21 +01:00

blk-settings.c

block: kill off q->flush_flags

2016-04-13 13:33:19 -06:00

blk-softirq.c

This adds a new gcc plugin named "latent_entropy". It is designed to

2016-10-15 10:03:15 -07:00

blk-sysfs.c

blk-mq: register device instead of disk

2016-09-21 07:56:16 -06:00

blk-tag.c

block: support different tag allocation policy

2015-01-23 14:15:46 -07:00

blk-throttle.c

blk-throttle: make sure expire time isn't too big

2018-03-22 09:17:44 +01:00

blk-timeout.c

block: Fix a race between blk_cleanup_queue() and timeout handling

2017-11-30 08:39:06 +00:00

blk.h

blk-mq: remove ->map_queue

2016-09-15 08:42:03 -06:00

bounce.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2015-09-19 18:57:09 -07:00

bsg-lib.c

Revert "bsg-lib: don't free job in bsg_prepare_job"

2017-10-21 17:21:33 +02:00

bsg.c

sg_write()/bsg_write() is not fit to be called under KERNEL_DS

2017-01-09 08:32:25 +01:00

cfq-iosched.c

cfq-iosched: fix the delay of cfq_group's vdisktime under iops mode

2017-06-14 15:05:58 +02:00

cmdline-parser.c

block: remove unrelated header files and export symbol

2014-01-21 20:18:26 -08:00

compat_ioctl.c

mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros

2016-04-04 10:41:08 -07:00

deadline-iosched.c

block: do not merge requests without consulting with io scheduler

2016-07-20 21:35:12 -06:00

elevator.c

block: Fix secure erase

2016-08-16 09:16:51 -06:00

genhd.c

block: fix bdi vs gendisk lifetime mismatch

2016-08-04 14:19:16 -06:00

ioctl.c

block: invalidate the page cache when issuing BLKZEROOUT

2016-10-11 15:06:30 -07:00

ioprio.c

block: fix use-after-free in sys_ioprio_get()

2016-07-01 08:39:24 -06:00

Kconfig

Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block

2016-10-09 17:29:33 -07:00

Kconfig.iosched

blkcg: make CONFIG_BLK_CGROUP bool

2012-03-06 21:27:21 +01:00

Makefile

Merge branch 'for-4.9/block-smp' of git://git.kernel.dk/linux-block

2016-10-09 17:32:20 -07:00

noop-iosched.c

elevator: use list_{first,prev,next}_entry

2015-11-16 15:21:48 -07:00

partition-generic.c

block: fix an error code in add_partition()

2018-04-13 19:48:04 +02:00

scsi_ioctl.c

block: allow WRITE_SAME commands with the SG_IO ioctl

2017-03-22 12:43:38 +01:00

t10-pi.c

block: Consolidate static integrity profile properties

2015-10-21 14:42:38 -06:00