Dmitry Monakhov 3116a23bb3 bio-integrity: Do not allocate integrity context for bio w/o data ...

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>

2017-06-03 07:36:27 -06:00

..

partitions

partitions/msdos: FreeBSD UFS2 file systems are not recognized

2017-05-23 09:16:07 -06:00

badblocks.c

badblocks: badblocks_set/clear update unacked_exist

2016-10-21 15:45:47 -06:00

bfq-cgroup.c

block, bfq: split bfq-iosched.c into multiple source files

2017-04-19 08:48:24 -06:00

bfq-iosched.c

block, bfq: stress that low_latency must be off to get max throughput

2017-05-10 07:39:43 -06:00

bfq-iosched.h

bfq: fix compile error if CONFIG_CGROUPS=n

2017-04-20 09:39:12 -06:00

bfq-wf2q.c

block, bfq: use pointer entity->sched_data only if set

2017-05-10 07:39:43 -06:00

bio-integrity.c

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

2017-06-03 07:36:27 -06:00

bio.c

Merge branch 'md-next' into md-linus

2017-05-01 14:09:21 -07:00

blk-cgroup.c

block: Avoid that blk_exit_rl() triggers a use-after-free

2017-06-01 13:07:55 -06:00

blk-core.c

block: Avoid that blk_exit_rl() triggers a use-after-free

2017-06-01 13:07:55 -06:00

blk-exec.c

block: remove the errors field from struct request

2017-04-20 12:16:10 -06:00

blk-flush.c

block: make __blk_end_bidi_request private

2017-04-19 10:19:47 -06:00

blk-integrity.c

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

2017-04-23 12:59:56 -06:00

blk-ioc.c

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

2017-03-03 10:53:35 -08:00

blk-lib.c

block: remove the discard_zeroes_data flag

2017-04-08 11:25:38 -06:00

blk-map.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

blk-merge.c

block: implement splitting of REQ_OP_WRITE_ZEROES bios

2017-04-08 11:25:38 -06:00

blk-mq-cpumap.c

blk-mq: export blk_mq_map_queues

2016-11-08 17:30:00 -05:00

blk-mq-debugfs.c

mq-deadline: add debugfs attributes

2017-05-04 08:25:17 -06:00

blk-mq-debugfs.h

mq-deadline: add debugfs attributes

2017-05-04 08:25:17 -06:00

blk-mq-pci.c

blk-mq-pci: Fix two spelling mistakes

2017-03-29 11:09:51 -06:00

blk-mq-sched.c

blk-mq-debugfs: allow schedulers to register debugfs attributes

2017-05-04 08:24:40 -06:00

blk-mq-sched.h

blk-mq: Remove blk_mq_sched_move_to_dispatch()

2017-04-20 17:28:30 -06:00

blk-mq-sysfs.c

blk-mq: untangle debugfs and sysfs

2017-05-04 08:24:13 -06:00

blk-mq-tag.c

blk-mq: add shallow depth option for blk_mq_get_tag()

2017-04-14 14:06:54 -06:00

blk-mq-tag.h

blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset

2017-03-02 08:56:04 -07:00

blk-mq-virtio.c

blk-mq: provide a default queue mapping for virtio device

2017-02-27 20:54:05 +02:00

blk-mq.c

blk-mq: Take tagset lock when updating hw queues

2017-05-30 12:32:37 -06:00

blk-mq.h

blk-mq: move debugfs declarations to a separate header file

2017-05-04 08:23:44 -06:00

blk-settings.c

block: remove the discard_zeroes_data flag

2017-04-08 11:25:38 -06:00

blk-softirq.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h>

2017-03-02 08:42:26 +01:00

blk-stat.c

blk-stat: don't use this_cpu_ptr() in a preemptable section

2017-05-10 07:40:18 -06:00

blk-stat.h

blk-stat: kill blk_stat_rq_ddir()

2017-04-21 07:56:23 -06:00

blk-sysfs.c

block: Avoid that blk_exit_rl() triggers a use-after-free

2017-06-01 13:07:55 -06:00

blk-tag.c

blk-mq-sched: add framework for MQ capable IO schedulers

2017-01-17 10:04:20 -07:00

blk-throttle.c

blk-throttle: force user to configure all settings for io.low

2017-05-22 14:47:12 -06:00

blk-timeout.c

block: remove the errors field from struct request

2017-04-20 12:16:10 -06:00

blk-wbt.c

blk-stat: kill blk_stat_rq_ddir()

2017-04-21 07:56:23 -06:00

blk-wbt.h

block: Make writeback throttling defaults consistent for SQ devices

2017-04-19 08:49:03 -06:00

blk-zoned.c

block: Rename blk_queue_zone_size and bdev_zone_size

2017-01-12 07:58:32 -07:00

blk.h

block: Avoid that blk_exit_rl() triggers a use-after-free

2017-06-01 13:07:55 -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

scsi: introduce a result field in struct scsi_request

2017-04-20 12:16:10 -06:00

bsg.c

Merge branch 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-05-01 14:41:04 -07:00

cfq-iosched.c

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

2017-05-31 09:25:21 -06:00

cmdline-parser.c

block: remove unrelated header files and export symbol

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

compat_ioctl.c

block: remove the discard_zeroes_data flag

2017-04-08 11:25:38 -06:00

deadline-iosched.c

block: enumify ELEVATOR_*_MERGE

2017-02-08 13:43:06 -07:00

elevator.c

elevator: remove redundant warnings on IO scheduler switch

2017-05-10 07:40:04 -06:00

genhd.c

Merge tag 'docs-4.12' of git://git.lwn.net/linux

2017-05-02 10:21:17 -07:00

ioctl.c

block: remove the discard_zeroes_data flag

2017-04-08 11:25:38 -06:00

ioprio.c

block: Optimize ioprio_best()

2017-04-19 17:38:36 -06:00

Kconfig

Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2017-05-12 15:43:10 -07:00

Kconfig.iosched

block, bfq: add full hierarchical scheduling and cgroups support

2017-04-19 08:30:26 -06:00

kyber-iosched.c

kyber: add debugfs attributes

2017-05-04 08:25:17 -06:00

Makefile

block, bfq: split bfq-iosched.c into multiple source files

2017-04-19 08:48:24 -06:00

mq-deadline.c

mq-deadline: add debugfs attributes

2017-05-04 08:25:17 -06:00

noop-iosched.c

block: move existing elevator ops to union

2017-01-17 10:03:33 -07:00

opal_proto.h

block/sed-opal: allocate struct opal_dev dynamically

2017-02-17 12:41:47 -07:00

partition-generic.c

block: fix an error code in add_partition()

2017-05-23 08:41:59 -06:00

scsi_ioctl.c

scsi: introduce a result field in struct scsi_request

2017-04-20 12:16:10 -06:00

sed-opal.c

block: sed-opal: Tone down all the pr_* to debugs

2017-04-07 14:24:16 -06:00

t10-pi.c

block: constify struct blk_integrity_profile

2017-03-24 20:34:39 -06:00