Laibin Qiu 0cfc8a0fb0 blk-throttle: Set BIO_THROTTLED when bio has been throttled ... [ Upstream commit 5a011f889b ] 1.In current process, all bio will set the BIO_THROTTLED flag after __blk_throtl_bio(). 2.If bio needs to be throttled, it will start the timer and stop submit bio directly. Bio will submit in blk_throtl_dispatch_work_fn() when the timer expires.But in the current process, if bio is throttled. The BIO_THROTTLED will be set to bio after timer start. If the bio has been completed, it may cause use-after-free blow. BUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70 Read of size 2 at addr ffff88801b8902d4 by task fio/26380 dump_stack+0x9b/0xce print_address_description.constprop.6+0x3e/0x60 kasan_report.cold.9+0x22/0x3a blk_throtl_bio+0x12f0/0x2c70 submit_bio_checks+0x701/0x1550 submit_bio_noacct+0x83/0xc80 submit_bio+0xa7/0x330 mpage_readahead+0x380/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Allocated by task 26380: kasan_save_stack+0x19/0x40 __kasan_kmalloc.constprop.2+0xc1/0xd0 kmem_cache_alloc+0x146/0x440 mempool_alloc+0x125/0x2f0 bio_alloc_bioset+0x353/0x590 mpage_alloc+0x3b/0x240 do_mpage_readpage+0xddf/0x1ef0 mpage_readahead+0x264/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 0: kasan_save_stack+0x19/0x40 kasan_set_track+0x1c/0x30 kasan_set_free_info+0x1b/0x30 __kasan_slab_free+0x111/0x160 kmem_cache_free+0x94/0x460 mempool_free+0xd6/0x320 bio_free+0xe0/0x130 bio_put+0xab/0xe0 bio_endio+0x3a6/0x5d0 blk_update_request+0x590/0x1370 scsi_end_request+0x7d/0x400 scsi_io_completion+0x1aa/0xe50 scsi_softirq_done+0x11b/0x240 blk_mq_complete_request+0xd4/0x120 scsi_mq_done+0xf0/0x200 virtscsi_vq_done+0xbc/0x150 vring_interrupt+0x179/0x390 __handle_irq_event_percpu+0xf7/0x490 handle_irq_event_percpu+0x7b/0x160 handle_irq_event+0xcc/0x170 handle_edge_irq+0x215/0xb20 common_interrupt+0x60/0x120 asm_common_interrupt+0x1e/0x40 Fix this by move BIO_THROTTLED set into the queue_lock. Signed-off-by: Laibin Qiu <qiulaibin@huawei.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20220301123919.2381579-1-qiulaibin@huawei.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-06-09 10:25:29 +02:00
..
partitions	block: remove GENHD_FL_EXT_DEVT	2021-11-29 06:38:35 -07:00
badblocks.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
bdev.c	mm: remove cleancache	2022-01-22 08:33:38 +02:00
bfq-cgroup.c	block, bfq: don't move oom_bfqq	2022-04-08 13:58:36 +02:00
bfq-iosched.c	bfq: Fix warning in bfqq_request_over_limit()	2022-05-09 09:16:29 +02:00
bfq-iosched.h	bfq: Provide helper to generate bfqq name	2021-11-29 06:38:52 -07:00
bfq-wf2q.c	block/bfq_wf2q: correct weight to ioprio	2022-04-08 13:58:36 +02:00
bio-integrity.c	block: bio-integrity: Advance seed correctly for larger interval sizes	2022-02-03 21:09:24 -07:00
bio.c	block: fix offset/size check in bio_trim()	2022-04-20 09:36:18 +02:00
blk-cgroup-rwstat.c	blk-cgroup: Fix the recursive blkg rwstat	2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h	blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT	2019-11-07 12:28:13 -07:00
blk-cgroup.c	blk-cgroup: set blkg iostat after percpu stat aggregation	2022-04-08 13:57:34 +02:00
blk-core.c	block: release rq qos structures for queue without disk	2022-03-14 14:05:41 -06:00
blk-crypto-fallback.c	blk-crypto: rename blk_keyslot_manager to blk_crypto_profile	2021-10-21 10:49:32 -06:00
blk-crypto-internal.h	block: move struct request to blk-mq.h	2021-10-18 06:17:02 -06:00
blk-crypto-profile.c	blk-crypto: remove blk_crypto_unregister()	2021-11-29 06:38:51 -07:00
blk-crypto.c	blk-crypto: rename blk_keyslot_manager to blk_crypto_profile	2021-10-21 10:49:32 -06:00
blk-flush.c	block: switch to atomic_t for request references	2021-12-03 14:51:29 -07:00
blk-ia-ranges.c	block: fix memory leak in disk_register_independent_access_ranges	2022-01-23 09:13:09 -07:00
blk-integrity.c	blk-crypto: remove blk_crypto_unregister()	2021-11-29 06:38:51 -07:00
blk-ioc.c	block: restore the old set_task_ioprio() behaviour wrt PF_EXITING	2022-04-08 13:58:57 +02:00
blk-iocost.c	iocost: don't reset the inuse weight of under-weighted debtors	2022-05-09 09:16:16 +02:00
blk-iolatency.c	block: fix rq-qos breakage from skipping rq_qos_done_bio()	2022-04-08 13:57:26 +02:00
blk-ioprio.c	blk-ioprio: don't set bio priority if not needed	2021-11-29 06:38:35 -07:00
blk-ioprio.h	block: Introduce the ioprio rq-qos policy	2021-06-21 15:03:40 -06:00
blk-lib.c	block: export blk_next_bio()	2021-06-17 15:51:20 +02:00
blk-map.c	block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern	2022-02-17 07:54:03 -07:00
blk-merge.c	block: throttle split bio in case of iops limit	2022-04-08 13:58:36 +02:00
blk-mq-cpumap.c	blk-mq: remove the calling of local_memory_node()	2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c	blk-mq: check q->poll_stat in queue_poll_stat_show	2021-12-02 08:20:49 -07:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c	block: limit request dispatch loop duration	2022-04-08 13:57:26 +02:00
blk-mq-sched.h	block: move blk_mq_sched_assign_ioc to blk-ioc.c	2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c	blk-mq: move srcu from blk_mq_hw_ctx to request_queue	2021-12-03 14:51:29 -07:00
blk-mq-tag.c	blk-mq: fix tag_get wait task can't be awakened	2022-01-13 12:52:14 -07:00
blk-mq-tag.h	blk-mq: Delete busy_iter_fn	2021-12-06 13:18:47 -07:00
blk-mq-virtio.c	blk-mq: Fix typo in comment	2020-03-17 20:55:21 +01:00
blk-mq.c	Revert "block: inherit request start time from bio for BLK_CGROUP"	2022-05-09 09:16:29 +02:00
blk-mq.h	blk-mq: don't run might_sleep() if the operation needn't blocking	2021-12-06 09:40:42 -07:00
blk-pm.c	scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()	2021-12-22 23:38:29 -05:00
blk-pm.h	block: Remove unused blk_pm_*() function definitions	2021-02-22 06:33:48 -07:00
blk-rq-qos.c	rq-qos: fix missed wake-ups in rq_qos_throttle try two	2021-06-08 15:12:57 -06:00
blk-rq-qos.h	block: fix rq-qos breakage from skipping rq_qos_done_bio()	2022-04-08 13:57:26 +02:00
blk-settings.c	block: Fix partition check for host-aware zoned block devices	2021-10-27 06:58:01 -06:00
blk-stat.c	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
blk-stat.h	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
blk-sysfs.c	block: don't delete queue kobject before its children	2022-04-08 13:57:35 +02:00
blk-throttle.c	blk-throttle: Set BIO_THROTTLED when bio has been throttled	2022-06-09 10:25:29 +02:00
blk-throttle.h	block: throttle split bio in case of iops limit	2022-04-08 13:58:36 +02:00
blk-timeout.c	block: blk-timeout: delete duplicated word	2020-07-31 16:29:47 -06:00
blk-wbt.c	blk-wbt: prevent NULL pointer dereference in wb_timer_fn	2021-10-19 06:13:41 -06:00
blk-wbt.h	blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()	2021-06-21 15:03:41 -06:00
blk-zoned.c	block: Hold invalidate_lock in BLKRESETZONE ioctl	2021-11-11 11:52:46 -07:00
blk.h	block: only build the icq tracking code when needed	2021-12-16 10:59:02 -07:00
bounce.c	mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h>	2021-10-18 06:17:01 -06:00
bsg-lib.c	block: remove the gendisk argument to blk_execute_rq	2021-11-29 06:41:29 -07:00
bsg.c	scsi: bsg: Fix device unregistration	2021-09-14 00:22:15 -04:00
disk-events.c	block: return errors from disk_alloc_events	2021-08-23 12:55:45 -06:00
elevator.c	block/wbt: fix negative inflight counter when remove scsi device	2022-02-17 07:54:03 -07:00
elevator.h	block: move elevator.h to block/	2021-10-18 06:17:01 -06:00
fops.c	block: clear iocb->private in blkdev_bio_end_io_async()	2022-02-22 06:59:49 -07:00
genhd.c	block: Fix the maximum minor value is blk_alloc_ext_minor()	2022-04-08 13:58:57 +02:00
holder.c	block: drop unused includes in <linux/genhd.h>	2021-10-18 06:17:02 -06:00
ioctl.c	block/compat_ioctl: fix range check in BLKGETSIZE	2022-04-27 14:40:54 +02:00
ioprio.c	for-5.17/block-2022-01-11	2022-01-12 10:26:52 -08:00
Kconfig	block: only build the icq tracking code when needed	2021-12-16 10:59:02 -07:00
Kconfig.iosched	block: only build the icq tracking code when needed	2021-12-16 10:59:02 -07:00
kyber-iosched.c	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
Makefile	block: remove blk-exec.c	2021-11-29 06:34:50 -07:00
mq-deadline.c	block/mq-deadline: Set the fifo_time member also if inserting at head	2022-05-25 09:59:06 +02:00
opal_proto.h	block: sed-opal: Change the check condition for regular session validity	2020-03-12 08:00:10 -06:00
sed-opal.c	block: sed-opal: Change the check condition for regular session validity	2020-03-12 08:00:10 -06:00
t10-pi.c	block: move integrity handling out of <linux/blkdev.h>	2021-10-18 06:17:02 -06:00