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Laibin Qiu 047ea38d41 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> [ Keerthana: Remove 'out' and handle return with reference to commit `81c7a63` ] Signed-off-by: Keerthana K <keerthana.kalyanasundaram@broadcom.com> Signed-off-by: Shivani Agarwal <shivani.agarwal@broadcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2026-01-19 13:10:18 +01:00
arch	ARM: dts: imx6q-ba16: fix RTC interrupt level	2026-01-19 13:10:15 +01:00
block	blk-throttle: Set BIO_THROTTLED when bio has been throttled	2026-01-19 13:10:18 +01:00
certs
crypto	crypto: af_alg - zero initialize memory allocated via sock_kmalloc	2026-01-19 13:10:08 +01:00
Documentation	fs_context: drop the unused lsm_flags member	2026-01-19 13:09:38 +01:00
drivers	pinctrl: qcom: lpass-lpi: mark the GPIO controller as sleeping	2026-01-19 13:10:18 +01:00
fs	nfsd: provide locking for v4_end_grace	2026-01-19 13:10:18 +01:00
include	NFSD: Remove NFSERR_EAGAIN	2026-01-19 13:10:18 +01:00
init	init: handle bootloader identifier in kernel parameters	2025-10-19 16:21:45 +02:00
io_uring	io_uring: fix filename leak in __io_openat_prep()	2026-01-19 13:09:54 +01:00
ipc	ipc: fix to protect IPCS lookups using RCU	2025-06-27 11:05:26 +01:00
kernel	tracing: Do not register unsupported perf events	2026-01-19 13:09:53 +01:00
lib	lib/crypto: aes: Fix missing MMU protection for AES S-box	2026-01-19 13:10:13 +01:00
LICENSES
mm	mm/balloon_compaction: convert balloon_page_delete() to balloon_page_finalize()	2026-01-19 13:10:10 +01:00
net	arp: do not assume dev_hard_header() does not change skb->head	2026-01-19 13:10:17 +01:00
samples	samples: mei: Fix building on musl libc	2025-08-28 16:24:07 +02:00
scripts	kbuild: Use CRC32 and a 1MiB dictionary for XZ compressed modules	2026-01-19 13:10:05 +01:00
security	KEYS: trusted: Fix a memory leak in tpm2_load_cmd	2026-01-19 13:09:48 +01:00
sound	ASoC: stm32: sai: fix OF node leak on probe	2026-01-19 13:10:11 +01:00
tools	selftests: net: test_vxlan_under_vrf: fix HV connectivity test	2026-01-19 13:10:12 +01:00
usr	kbuild: hdrcheck: fix cross build with clang	2025-06-27 11:05:22 +01:00
virt	KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin()	2024-10-22 15:40:41 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore	Remove *.orig pattern from .gitignore	2024-10-17 15:11:10 +02:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS	staging: rtl8712: Remove driver using deprecated API wext	2025-12-07 06:09:36 +09:00
Makefile	Linux 5.15.197	2025-12-07 06:09:37 +09:00
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