Roman Smirnov 6a55dab4ac 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 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	badblocks: fix wrong return value in badblocks_set if badblocks are disabled	2017-11-03 11:29:50 -07:00
bfq-cgroup.c	block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()	2020-03-25 08:06:08 +01:00
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-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request	2018-01-17 09:49:21 -07:00
blk-flush.c	block: Fix fsync always failed if once failed	2022-03-08 19:04:08 +01:00
blk-integrity.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
blk-ioc.c	block: Fix use-after-free issue accessing struct io_cq	2020-04-17 10:48:41 +02:00
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	block: fix 32 bit overflow in __blkdev_issue_discard()	2020-02-01 09:37:12 +00:00
blk-map.c	block: fix memleak when __blk_rq_map_user_iov() is failed	2020-01-12 12:17:22 +01:00
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	blk-mq: don't keep offline CPUs mapped to hctx 0	2018-04-10 08:38:46 -06:00
blk-mq-debugfs-zoned.c	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
blk-mq-debugfs.c	block, scsi: Change the preempt-only flag into a counter	2019-08-04 09:30:57 +02:00
blk-mq-debugfs.h	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
blk-mq-pci.c	blk-mq: code clean-up by adding an API to clear set->mq_map	2018-07-09 09:07:53 -06:00
blk-mq-rdma.c	block: Add rdma affinity based queue mapping helper	2017-08-08 14:58:03 -04:00
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	block: mq-deadline: Fix write completion handling	2019-01-13 09:51:07 +01:00
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	blk-mq: Allow blocking queue tag iter callbacks	2018-09-25 20:17:59 -06:00
blk-mq-tag.h	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
blk-mq-virtio.c
blk-mq.c	blk-mq: fix IO hang from sbitmap wakeup race	2024-02-23 08:12:51 +01:00
blk-mq.h	blk-mq: free hw queue's resource in hctx's release handler	2019-09-16 08:22:13 +02:00
blk-rq-qos.c	blk-wbt: fix performance regression in wbt scale_up/scale_down	2019-10-17 13:45:16 -07:00
blk-rq-qos.h	blk-rq-qos: fix first node deletion of rq_qos_del()	2019-10-29 09:20:09 +01:00
blk-settings.c	blk-settings: align max_sectors on "logical_block_size" boundary	2021-03-04 09:39:51 +01:00
blk-softirq.c	block: fix timeout changes for legacy request drivers	2018-06-19 11:27:18 -06:00
blk-stat.c	block: prevent division by zero in blk_rq_stat_sum()	2024-04-13 12:50:16 +02:00
blk-stat.h	block: deactivate blk_stat timer in wbt_disable_default()	2019-01-13 09:51:06 +01:00
blk-sysfs.c	block: don't delete queue kobject before its children	2022-04-15 14:14:43 +02:00
blk-tag.c	for-linus-20180616	2018-06-17 05:37:55 +09:00
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	blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE	2018-06-23 10:25:45 -06:00
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	block: copy ioprio in __bio_clone_fast() and bounce	2018-12-01 09:37:32 +01:00
bsg-lib.c	block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path	2018-08-01 09:13:03 -06:00
bsg.c	block: bsg: move atomic_t ref_count variable to refcount API	2018-08-27 19:17:02 -06:00
cfq-iosched.c	cfq: Suppress compiler warnings about comparisons	2018-08-07 17:57:13 -06:00
cmdline-parser.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compat_ioctl.c	block/compat_ioctl: fix range check in BLKGETSIZE	2022-04-27 13:39:45 +02:00
deadline-iosched.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
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	block: introduce blk-iolatency io controller	2018-07-09 09:07:54 -06:00
Kconfig.iosched	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kyber-iosched.c	block: kyber: make kyber more friendly with merging	2018-05-30 10:47:40 -06:00
Makefile	block: introduce blk-iolatency io controller	2018-07-09 09:07:54 -06:00
mq-deadline.c	block: mq-deadline: Fix queue restart handling	2019-10-07 18:57:19 +02:00
noop-iosched.c
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	block: consistently use GFP_NOIO instead of __GFP_NORECLAIM	2018-05-14 08:55:18 -06:00
sed-opal.c	block: sed-opal: handle empty atoms when parsing response	2024-03-26 18:22:33 -04:00
t10-pi.c	block: move dif_prepare/dif_complete functions to block layer	2018-07-30 08:27:02 -06:00