Roman Smirnov 21e7d72d0c 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 13:01:45 +02:00

..

partitions

block: Move checking GENHD_FL_NO_PART to bdev_add_partition()

2024-02-23 08:54:35 +01:00

badblocks.c

…

bdev.c

block: move GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE to disk->event_flags

2023-09-19 12:23:02 +02:00

bfq-cgroup.c

block, bfq: fix uaf for bfqq in bic_set_bfqq()

2023-02-09 11:26:36 +01:00

bfq-iosched.c

block, bfq: fix uaf for bfqq in bic_set_bfqq()

2023-02-09 11:26:36 +01:00

bfq-iosched.h

…

bfq-wf2q.c

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bio-integrity.c

block: bio-integrity: Copy flags when bio_integrity_payload is cloned

2023-03-10 09:39:05 +01:00

bio.c

block: prevent an integer overflow in bvec_try_merge_hw_page

2024-02-23 08:54:44 +01:00

blk-cgroup-rwstat.c

…

blk-cgroup-rwstat.h

…

blk-cgroup.c

blk-cgroup: bypass blkcg_deactivate_policy after destroying

2023-12-20 15:17:39 +01:00

blk-core.c

blk-core: use pr_warn_ratelimited() in bio_check_ro()

2023-11-20 11:08:29 +01:00

blk-crypto-fallback.c

…

blk-crypto-internal.h

blk-mq: release crypto keyslot before reporting I/O complete

2023-05-11 23:00:16 +09:00

blk-crypto.c

blk-crypto: make blk_crypto_evict_key() more robust

2023-05-11 23:00:16 +09:00

blk-exec.c

…

blk-flush.c

…

blk-integrity.c

…

blk-ioc.c

block: fix default IO priority handling again

2022-08-11 13:07:50 +02:00

blk-iocost.c

blk-iocost: Fix an UBSAN shift-out-of-bounds warning

2024-02-23 08:54:59 +01:00

blk-iolatency.c

block: don't allow the same type rq_qos add more than once

2022-08-17 14:24:24 +02:00

blk-ioprio.c

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blk-ioprio.h

…

blk-lib.c

…

blk-map.c

…

blk-merge.c

blk-mq: release crypto keyslot before reporting I/O complete

2023-05-11 23:00:16 +09:00

blk-mq-cpumap.c

…

blk-mq-debugfs-zoned.c

…

blk-mq-debugfs.c

blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created

2022-08-17 14:23:12 +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 09:39:04 +01:00

blk-mq-sched.h

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blk-mq-sysfs.c

blk-mq: fix possible memleak when register 'hctx' failed

2022-12-31 13:14:43 +01:00

blk-mq-tag.c

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blk-mq-tag.h

…

blk-mq-virtio.c

…

blk-mq.c

blk-mq: fix IO hang from sbitmap wakeup race

2024-02-23 08:54:52 +01:00

blk-mq.h

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blk-pm.c

…

blk-pm.h

…

blk-rq-qos.c

…

blk-rq-qos.h

block: don't allow the same type rq_qos add more than once

2022-08-17 14:24:24 +02:00

blk-settings.c

block: Clear zone limits for a non-zoned stacked queue

2024-04-10 16:18:35 +02:00

blk-stat.c

block: prevent division by zero in blk_rq_stat_sum()

2024-04-13 13:01:45 +02:00

blk-stat.h

…

blk-sysfs.c

block: fix use-after-free of q->q_usage_counter

2023-10-10 21:59:05 +02:00

blk-throttle.c

blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!"

2023-12-20 15:17:39 +01:00

blk-timeout.c

…

blk-wbt.c

blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init()

2022-10-26 12:35:54 +02:00

blk-wbt.h

…

blk-zoned.c

…

blk.h

…

bounce.c

…

bsg-lib.c

…

bsg.c

…

disk-events.c

block: increment diskseq on all media change events

2023-07-23 13:47:20 +02:00

elevator.c

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fops.c

block: Don't invalidate pagecache for invalid falloc modes

2024-01-15 18:51:07 +01:00

genhd.c

block: add check of 'minors' and 'first_minor' in device_add_disk()

2024-01-25 14:52:39 -08:00

holder.c

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ioctl.c

block: Move checking GENHD_FL_NO_PART to bdev_add_partition()

2024-02-23 08:54:35 +01:00

ioprio.c

block: fix default IO priority handling again

2022-08-11 13:07:50 +02:00

Kconfig

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Kconfig.iosched

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keyslot-manager.c

blk-crypto: make blk_crypto_evict_key() more robust

2023-05-11 23:00:16 +09:00

kyber-iosched.c

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Makefile

block: move CONFIG_BLOCK guard to top Makefile

2022-12-14 11:37:30 +01:00

mq-deadline.c

block: mq-deadline: Rename deadline_is_seq_writes()

2023-01-24 07:22:49 +01:00

opal_proto.h

block: sed-opal: handle empty atoms when parsing response

2024-03-26 18:21:13 -04:00

sed-opal.c

block: sed-opal: handle empty atoms when parsing response

2024-03-26 18:21:13 -04:00

t10-pi.c

…