KCSAN: data-race in has_bh_in_lru / invalidate_bh

KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru (2)
Status: moderation: reported on 2021/10/01 15:57
Reported-by: syzbot+aea2daf492f8a5b182aa@syzkaller.appspotmail.com
First crash: 197d, last: 2d00h

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru				14	618d	684d	0/22	auto-closed as invalid on 2020/04/15 20:03

Sample crash report:

loop5: detected capacity change from 0 to 4096
==================================================================
BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru

write to 0xffff888237c22f10 of 8 bytes by task 11255 on cpu 0:
 __invalidate_bh_lrus fs/buffer.c:1393 [inline]
 invalidate_bh_lru+0x8d/0xc0 fs/buffer.c:1405
 smp_call_function_many_cond+0x496/0x620 kernel/smp.c:960
 on_each_cpu_cond_mask+0x31/0x40 kernel/smp.c:1135
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x26/0x30 fs/buffer.c:1424
 kill_bdev block/bdev.c:76 [inline]
 set_blocksize+0x242/0x270 block/bdev.c:157
 sb_set_blocksize+0x2c/0xa0 block/bdev.c:166
 ext4_fill_super+0x2287/0x7830 fs/ext4/super.c:4327
 mount_bdev+0x1e8/0x290 fs/super.c:1368
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6515
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x11ec/0x1d20 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888237c22f10 of 8 bytes by task 11262 on cpu 1:
 has_bh_in_lru+0x31/0x1c0 fs/buffer.c:1415
 smp_call_function_many_cond+0x236/0x620 kernel/smp.c:917
 on_each_cpu_cond_mask+0x31/0x40 kernel/smp.c:1135
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x26/0x30 fs/buffer.c:1424
 kill_bdev block/bdev.c:76 [inline]
 set_blocksize+0x242/0x270 block/bdev.c:157
 sb_set_blocksize+0x2c/0xa0 block/bdev.c:166
 ext4_fill_super+0x2287/0x7830 fs/ext4/super.c:4327
 mount_bdev+0x1e8/0x290 fs/super.c:1368
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6515
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x11ec/0x1d20 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffff888105fd10d0 -> 0xffff88813106db60

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 11262 Comm: syz-executor.5 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
EXT4-fs error (device loop5): ext4_fill_super:4816: inode #2: comm syz-executor.5: iget: root inode unallocated
EXT4-fs (loop5): get root inode failed
EXT4-fs (loop5): mount failed

Crashes (61):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/10/13 21:28	upstream	348949d9a444	5462d470	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/12 10:09	upstream	fa5878760579	838e7e2c	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/11 04:55	upstream	efb52a7d9511	838e7e2c	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/09 02:40	upstream	741668ef7832	efe0f24d	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/08 11:01	upstream	1da38549dd64	efe0f24d	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/05 06:37	upstream	84b3e42564ac	ce697b49	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/04 13:10	upstream	9e1ff307c779	ce697b49	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/04 01:36	upstream	6761a0ae9895	db0f5787	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/02 06:06	upstream	53d5fc89d66a	db0f5787	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/10/01 05:00	upstream	4de593fb965f	1d849ab4	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/29 21:17	upstream	a4e6f95a891a	e08fe937	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/27 15:43	upstream	5816b3e6577e	78494d16	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/26 09:53	upstream	a3b397b4fffb	8cac236e	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/25 21:53	upstream	85736168463d	8cac236e	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/14 00:40	upstream	316346243be6	58d09404	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/12 03:42	upstream	c605c39677b9	3ce60af8	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/06 16:12	upstream	27151f177827	6ca60148	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/02 15:04	upstream	4ac6d90867a4	d0f0970b	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/09/01 19:22	upstream	835d31d319d9	7eb7e152	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/29 23:34	upstream	537b57bd5a20	be2c130d	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/28 23:57	upstream	3f5ad13cb012	be2c130d	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/27 05:02	upstream	1a6d80ff2419	b318694d	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/26 07:57	upstream	fe67f4dd8daa	b599f2fc	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/16 04:01	upstream	ecf93431963a	2489ab88	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/08 14:11	upstream	85a90500f9a1	6972b106	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/08/03 22:37	upstream	d5ad8ec3cfb5	6c236867	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/31 01:00	upstream	4669e13cd67f	6c236867	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/28 21:14	upstream	4010a528219e	9a4781d4	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/24 09:06	upstream	f0fddcec6b62	bc5f1d88	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/17 08:01	upstream	0d18c12b288a	f115ae98	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/08 12:58	upstream	3dbdb38e2869	1aade754	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/07/07 11:23	upstream	3dbdb38e2869	4846d5c1	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/29 22:20	upstream	c54b245d0118	a4fccb01	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/29 16:51	upstream	c54b245d0118	9d2ab5df	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/27 01:15	upstream	625acffd7ae2	9d2ab5df	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/25 17:24	upstream	44db63d1ad8d	ae6bf8dd	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/25 04:20	upstream	4a09d388f2ab	0edbbe31	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/23 23:53	upstream	7266f2030eb0	fe4ab389	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/12 16:14	upstream	ad347abe4a98	1ba81399	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/10 22:53	upstream	f09eacca59d2	1ba81399	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/07 23:28	upstream	614124bea77e	b718257f	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/06/03 09:02	upstream	324c92e5e0ee	0740de69	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/31 07:25	upstream	8124c8a6b353	325a8dab	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/30 22:13	upstream	b90e90f40b4f	325a8dab	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/24 06:17	upstream	6ebb6814a1ef	3c7fef33	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/22 10:33	upstream	45af60e7ced0	3c7fef33	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/16 05:02	upstream	c12a29ed9094	f54a5c09	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/15 12:23	upstream	25a1298726e9	93f844de	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/09 11:25	upstream	b741596468b0	bc5434be	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/03 22:20	upstream	6f8ee8d36d07	ad61f371	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/03 07:31	upstream	9ccce092fc64	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/02 15:51	upstream	17ae69aba89d	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/02 02:56	upstream	10a3efd0fee5	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/01 16:37	upstream	9f67672a817e	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/05/01 02:46	upstream	65c61de9d090	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/30 02:30	upstream	8ca5297e7e38	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/28 17:13	upstream	e359bce39d90	77e2b668	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/25 10:22	upstream	2a1d7946fa53	36c88236	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/19 21:27	upstream	bf05bf16c76b	4285c989	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/18 11:47	upstream	c98ff1d013d2	7e2b734b	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru
ci2-upstream-kcsan-gce	2021/04/01 00:50	upstream	d19cc4bfbff1	6a81331a	.config	log	report	info	KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru