Roman Smirnov 6a55dab4ac block: prevent division by zero in blk_rq_stat_sum() ...

[ Upstream commit 93f52fbeaf4b676b21acfe42a5152620e6770d02 ]

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 12:50:16 +02:00

..

partitions

block: fix signed int overflow in Amiga partition support

2023-08-30 16:31:46 +02:00

badblocks.c

…

bfq-cgroup.c

…

bfq-iosched.c

block, bfq: protect 'bfqd->queued' by 'bfqd->lock'

2022-11-10 17:46:54 +01:00

bfq-iosched.h

block, bfq: fix use after free in bfq_bfqq_expire

2021-12-29 12:20:43 +01:00

bfq-wf2q.c

block, bfq: fix use after free in bfq_bfqq_expire

2021-12-29 12:20:43 +01:00

bio-integrity.c

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

2023-03-11 16:31:33 +01:00

bio.c

block: Remove special-casing of compound pages

2024-02-23 08:12:40 +01:00

blk-cgroup.c

bdi: use bdi_dev_name() to get device name

2021-08-08 08:54:29 +02:00

blk-core.c

block: fix and cleanup bio_check_ro

2023-02-06 07:49:41 +01:00

blk-exec.c

…

blk-flush.c

block: Fix fsync always failed if once failed

2022-03-08 19:04:08 +01:00

blk-integrity.c

…

blk-ioc.c

…

blk-iolatency.c

blk-iolatency: Fix inflight count imbalances and IO hangs on offline

2022-06-14 16:59:30 +02:00

blk-lib.c

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blk-map.c

…

blk-merge.c

block: don't merge across cgroup boundaries if blkcg is enabled

2022-04-15 14:14:41 +02:00

blk-mq-cpumap.c

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blk-mq-debugfs-zoned.c

…

blk-mq-debugfs.c

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blk-mq-debugfs.h

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blk-mq-pci.c

…

blk-mq-rdma.c

…

blk-mq-sched.c

blk-mq: remove stale comment for blk_mq_sched_mark_restart_hctx

2023-03-11 16:31:33 +01:00

blk-mq-sched.h

…

blk-mq-sysfs.c

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

2023-01-18 11:30:37 +01:00

blk-mq-tag.c

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blk-mq-tag.h

…

blk-mq-virtio.c

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blk-mq.c

blk-mq: fix IO hang from sbitmap wakeup race

2024-02-23 08:12:51 +01:00

blk-mq.h

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blk-rq-qos.c

…

blk-rq-qos.h

…

blk-settings.c

blk-settings: align max_sectors on "logical_block_size" boundary

2021-03-04 09:39:51 +01:00

blk-softirq.c

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blk-stat.c

block: prevent division by zero in blk_rq_stat_sum()

2024-04-13 12:50:16 +02:00

blk-stat.h

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blk-sysfs.c

block: don't delete queue kobject before its children

2022-04-15 14:14:43 +02:00

blk-tag.c

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blk-throttle.c

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

2023-12-20 15:38:02 +01:00

blk-timeout.c

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blk-wbt.c

blk-wbt: make sure throttle is enabled properly

2021-07-20 16:15:48 +02:00

blk-wbt.h

blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()

2021-07-20 16:15:48 +02:00

blk-zoned.c

blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN

2021-09-22 11:47:57 +02:00

blk.h

block: split .sysfs_lock into two locks

2021-03-04 09:39:30 +01:00

bounce.c

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bsg-lib.c

…

bsg.c

…

cfq-iosched.c

…

cmdline-parser.c

…

compat_ioctl.c

block/compat_ioctl: fix range check in BLKGETSIZE

2022-04-27 13:39:45 +02:00

deadline-iosched.c

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elevator.c

block/wbt: fix negative inflight counter when remove scsi device

2022-02-23 11:58:40 +01:00

genhd.c

md: switch to ->check_events for media change notifications

2024-03-26 18:22:34 -04:00

ioctl.c

block: add a new set_read_only method

2024-03-26 18:22:34 -04:00

ioprio.c

block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)

2021-12-14 10:18:07 +01:00

Kconfig

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Kconfig.iosched

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kyber-iosched.c

…

Makefile

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mq-deadline.c

…

noop-iosched.c

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opal_proto.h

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

2024-03-26 18:22:33 -04:00

partition-generic.c

block: unhash blkdev part inode when the part is deleted

2023-01-18 11:29:59 +01:00

scsi_ioctl.c

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sed-opal.c

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

2024-03-26 18:22:33 -04:00

t10-pi.c

…