linux-stable/block
Roman Smirnov 512a01da71 block: prevent division by zero in blk_rq_stat_sum()
[ Upstream commit 93f52fbeaf ]

The expression dst->nr_samples + src->nr_samples may
have zero value on overflow. It is necessary to add
a check to avoid division by zero.

Found by Linux Verification Center (linuxtesting.org) with Svace.

Signed-off-by: Roman Smirnov <r.smirnov@omp.ru>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20240305134509.23108-1-r.smirnov@omp.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-13 13:05:12 +02:00
..
partitions block: Move checking GENHD_FL_NO_PART to bdev_add_partition() 2024-01-31 16:17:11 -08:00
badblocks.c
bdev.c block: update the stable_writes flag in bdev_add 2024-01-10 17:10:32 +01:00
bfq-cgroup.c block, bfq: fix uaf for bfqq in bic_set_bfqq() 2023-02-09 11:28:06 +01:00
bfq-iosched.c block, bfq: Fix division by zero error on zero wsum 2023-05-24 17:32:38 +01:00
bfq-iosched.h block, bfq: remove unused variable for bfq_queue 2022-10-20 05:46:49 -07:00
bfq-wf2q.c
bio-integrity.c block: factor out a bvec_set_page helper 2023-09-23 11:11:08 +02:00
bio.c block: Fix page refcounts for unaligned buffers in __bio_release_pages() 2024-04-03 15:19:46 +02:00
blk-cgroup-fc-appid.c
blk-cgroup-rwstat.c
blk-cgroup-rwstat.h
blk-cgroup.c blk-cgroup: bypass blkcg_deactivate_policy after destroying 2023-12-20 17:00:21 +01:00
blk-cgroup.h
blk-core.c block: treat poll queue enter similarly to timeouts 2024-02-16 19:06:31 +01:00
blk-crypto-fallback.c blk-crypto: dynamically allocate fallback profile 2023-08-23 17:52:39 +02:00
blk-crypto-internal.h blk-mq: release crypto keyslot before reporting I/O complete 2023-05-11 23:03:00 +09:00
blk-crypto-profile.c blk-crypto: use dynamic lock class for blk_crypto_profile::lock 2023-07-23 13:49:21 +02:00
blk-crypto-sysfs.c
blk-crypto.c blk-crypto: make blk_crypto_evict_key() more robust 2023-05-11 23:03:01 +09:00
blk-flush.c
blk-ia-ranges.c
blk-integrity.c
blk-ioc.c
blk-iocost.c blk-iocost: Fix an UBSAN shift-out-of-bounds warning 2024-02-16 19:06:29 +01:00
blk-iolatency.c
blk-ioprio.c
blk-ioprio.h
blk-lib.c
blk-map.c block: Fix WARNING in _copy_from_iter 2024-03-01 13:26:25 +01:00
blk-merge.c blk-mq: release crypto keyslot before reporting I/O complete 2023-05-11 23:03:00 +09:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c blk-mq: fix potential io hang by wrong 'wake_batch' 2023-07-19 16:20:55 +02:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c blk-mq: correct stale comment of .get_budget 2023-03-10 09:32:44 +01:00
blk-mq-sched.h
blk-mq-sysfs.c blk-mq: fix possible memleak when register 'hctx' failed 2022-12-31 13:33:03 +01:00
blk-mq-tag.c blk-mq: fix potential io hang by wrong 'wake_batch' 2023-07-19 16:20:55 +02:00
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c block: Do not force full zone append completion in req_bio_endio() 2024-04-03 15:19:49 +02:00
blk-mq.h blk-mq: fix potential io hang by wrong 'wake_batch' 2023-07-19 16:20:55 +02:00
blk-pm.c
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h
blk-settings.c block: Clear zone limits for a non-zoned stacked queue 2024-04-03 15:19:27 +02:00
blk-stat.c block: prevent division by zero in blk_rq_stat_sum() 2024-04-13 13:05:12 +02:00
blk-stat.h
blk-sysfs.c block: fix use-after-free of q->q_usage_counter 2023-10-10 22:00:37 +02:00
blk-throttle.c blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 2023-12-20 17:00:21 +01:00
blk-throttle.h
blk-timeout.c
blk-wbt.c blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init() 2022-10-09 07:48:16 -06:00
blk-wbt.h
blk-zoned.c
blk.h block: Revert "block: Do not reread partition table on exclusively open device" 2023-03-17 08:50:20 +01:00
bounce.c
bsg-lib.c
bsg.c
disk-events.c block: increment diskseq on all media change events 2023-07-19 16:21:47 +02:00
elevator.c
elevator.h
fops.c block: Don't invalidate pagecache for invalid falloc modes 2024-01-10 17:10:20 +01:00
genhd.c block: add check of 'minors' and 'first_minor' in device_add_disk() 2024-01-25 15:27:28 -08:00
holder.c
ioctl.c block: Move checking GENHD_FL_NO_PART to bdev_add_partition() 2024-01-31 16:17:11 -08:00
ioprio.c
Kconfig
Kconfig.iosched
kyber-iosched.c
Makefile
mq-deadline.c Revert "block/mq-deadline: use correct way to throttling write requests" 2024-04-03 15:19:37 +02:00
opal_proto.h block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:20:26 -04:00
sed-opal.c block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:20:26 -04:00
t10-pi.c