KCSAN: data-race in lru_add_drain_all / lru_cache

KCSAN: data-race in lru_add_drain_all / lru_cache_add
Status: moderation: reported on 2020/09/21 09:32
Reported-by: syzbot+162cca5cc31cf478f683@syzkaller.appspotmail.com
First crash: 325d, last: 5d20h

Sample crash report:

EXT4-fs (loop3): Invalid log block size: 10289664
==================================================================
BUG: KCSAN: data-race in lru_add_drain_all / lru_cache_add

write to 0xffff888237d264a8 of 1 bytes by task 19844 on cpu 1:
 pagevec_add include/linux/pagevec.h:74 [inline]
 lru_cache_add+0x74/0x130 mm/swap.c:461
 shmem_getpage_gfp+0xcf8/0x1410 mm/shmem.c:1934
 shmem_getpage mm/shmem.c:155 [inline]
 shmem_write_begin+0x7e/0x100 mm/shmem.c:2530
 generic_perform_write+0x196/0x3a0 mm/filemap.c:3676
 __generic_file_write_iter+0x161/0x300 mm/filemap.c:3805
 generic_file_write_iter+0x75/0x130 mm/filemap.c:3837
 call_write_iter include/linux/fs.h:2116 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x69d/0x770 fs/read_write.c:605
 ksys_write+0xce/0x180 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:667
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888237d264a8 of 1 bytes by task 20310 on cpu 0:
 pagevec_count include/linux/pagevec.h:61 [inline]
 lru_add_drain_all+0x108/0x3b0 mm/swap.c:813
 invalidate_bdev+0x50/0x70 fs/block_dev.c:96
 __loop_clr_fd+0x2e2/0x650 drivers/block/loop.c:1241
 loop_clr_fd drivers/block/loop.c:1336 [inline]
 lo_ioctl+0x9eb/0x11f0 drivers/block/loop.c:1694
 blkdev_ioctl+0x1d0/0x3c0 block/ioctl.c:585
 block_ioctl+0x6d/0x80 fs/block_dev.c:1664
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:1055
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:1055
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 20310 Comm: syz-executor.3 Tainted: G        W         5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (259):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/05/03 22:51	upstream	6f8ee8d3	ad61f371	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/05/03 10:46	upstream	9ccce092	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/05/02 13:11	upstream	17ae69ab	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/05/01 23:08	upstream	10a3efd0	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/30 22:33	upstream	65c61de9	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/30 01:48	upstream	8ca5297e	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/29 17:12	upstream	d72cd4ad	77e2b668	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/27 10:53	upstream	4a0225c3	805b5003	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/26 13:33	upstream	9f4ad9e4	805b5003	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/25 20:45	upstream	d2d09fbe	2a82f1b3	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/23 02:24	upstream	90c911ad	590921a5	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/22 03:03	upstream	16fc44d6	2bc8999a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/20 01:34	upstream	7af08140	4285c989	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/19 21:40	upstream	bf05bf16	4285c989	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/19 14:30	upstream	bf05bf16	50f523d7	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/18 14:43	upstream	c98ff1d0	7e2b734b	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/16 19:08	upstream	2f7b98d1	7e2b734b	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/16 14:03	upstream	7e25f40e	7e2b734b	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/13 00:33	upstream	89698bec	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/12 12:03	upstream	d434405a	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/12 04:26	upstream	7d900724	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/11 16:45	upstream	52e44129	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/10 21:58	upstream	d4961772	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/09 15:28	upstream	17e7124a	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/08 20:09	upstream	454859c5	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/08 02:33	upstream	3a229812	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/05 23:43	upstream	0a50438c	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/05 00:15	upstream	e49d033b	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/04 03:34	upstream	2023a53b	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/04/03 01:09	upstream	0a84c2e4	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/31 20:21	upstream	d19cc4bf	6a81331a	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/29 10:45	upstream	a5e13c6d	a8529b82	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/27 22:03	upstream	0f4498ce	a8529b82	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/26 20:12	upstream	db24726b	a8529b82	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/26 06:32	upstream	00232240	6a383ecf	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/25 09:15	upstream	e1381380	6a383ecf	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/24 22:22	upstream	4ee998b0	607e3baf	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/23 22:28	upstream	7acac4b3	e613994b	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/23 17:07	upstream	84196390	e613994b	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/23 12:53	upstream	84196390	8092f30d	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/22 03:35	upstream	5ee96fa9	bea32f74	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/20 22:48	upstream	812da4d3	17810eae	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/20 00:17	upstream	8b12a62a	3d01c4de	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/18 10:54	upstream	6417f031	7216542e	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/16 20:59	upstream	1df27313	fdb2bb2c	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/16 07:05	upstream	1a4431a5	fdb2bb2c	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/15 15:17	upstream	1e28eed1	fdb2bb2c	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/15 13:23	upstream	1e28eed1	cc1cff8f	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/15 06:41	upstream	75013c6c	cc1cff8f	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/03/13 09:15	upstream	f296bfd5	4a003785	.config	log	report	info	KCSAN: data-race in lru_add_drain_all / lru_cache_add
ci2-upstream-kcsan-gce	2021/01/16 21:12	upstream	54c6247d	65a7a854	.config	log	report	info
ci2-upstream-kcsan-gce	2020/09/21 03:41	upstream	bdcf11de	9564d2e9	.config	log	report	info
ci2-upstream-kcsan-gce	2020/06/18 14:33	upstream	1b504402	3ea11d3f	.config	log	report