syzbot


KCSAN: data-race in __lru_add_drain_all / folio_add_lru

Status: moderation: reported on 2021/12/14 17:42
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+d676f4fcc6452f55d1d0@syzkaller.appspotmail.com
First crash: 691d, last: 1d03h

Sample crash report:
BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru

read-write to 0xffff888237c29988 of 1 bytes by task 23710 on cpu 0:
 folio_batch_add include/linux/pagevec.h:74 [inline]
 folio_batch_add_and_move mm/swap.c:231 [inline]
 folio_add_lru+0x3c/0x120 mm/swap.c:517
 filemap_add_folio+0x103/0x160 mm/filemap.c:954
 __filemap_get_folio+0x31f/0x500 mm/filemap.c:1944
 grow_dev_page fs/buffer.c:1058 [inline]
 grow_buffers fs/buffer.c:1118 [inline]
 __getblk_slow fs/buffer.c:1145 [inline]
 __getblk_gfp+0x19b/0x710 fs/buffer.c:1439
 sb_getblk_gfp include/linux/buffer_head.h:351 [inline]
 __ext4_sb_bread_gfp+0x46/0x170 fs/ext4/super.c:230
 ext4_sb_bread_unmovable fs/ext4/super.c:253 [inline]
 ext4_load_super fs/ext4/super.c:5108 [inline]
 __ext4_fill_super fs/ext4/super.c:5227 [inline]
 ext4_fill_super+0xad6/0x3940 fs/ext4/super.c:5703
 get_tree_bdev+0x272/0x300 fs/super.c:1577
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5735
 vfs_get_tree+0x51/0x1b0 fs/super.c:1750
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888237c29988 of 1 bytes by task 23708 on cpu 1:
 folio_batch_count include/linux/pagevec.h:53 [inline]
 cpu_needs_drain mm/swap.c:795 [inline]
 __lru_add_drain_all+0x137/0x420 mm/swap.c:889
 lru_add_drain_all+0x10/0x20 mm/swap.c:905
 invalidate_bdev+0x54/0x70 block/bdev.c:86
 __ext4_fill_super fs/ext4/super.c:5678 [inline]
 ext4_fill_super+0x16ef/0x3940 fs/ext4/super.c:5703
 get_tree_bdev+0x272/0x300 fs/super.c:1577
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5735
 vfs_get_tree+0x51/0x1b0 fs/super.c:1750
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00 -> 0x01

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 23708 Comm: syz-executor.1 Not tainted 6.6.0-rc2-syzkaller-00386-g3aba70aed91f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
==================================================================

Crashes (658):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/24 04:48 upstream 3aba70aed91f 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/23 15:01 upstream d90b0276af8f 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/23 02:51 upstream 8018e02a8703 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/20 18:11 upstream 5d2f53532ecc 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/19 01:43 upstream 2cf0f7156238 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/15 01:06 upstream 9fdfb15a3dbf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/14 15:35 upstream aed8aee11130 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/13 09:43 upstream 3669558bdf35 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/09 08:31 upstream 32bf43e4efdb 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/08 13:32 upstream a48fa7efaf11 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/07 23:38 upstream 4a0fc73da97e 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/07 12:36 upstream 7ba2090ca64e 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/06 21:31 upstream 744a759492b5 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/06 10:21 upstream 65d6e954e378 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/05 06:10 upstream 3f86ed6ec0b3 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/09/02 15:17 upstream 0468be89b3fa 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/31 19:51 upstream b97d64c72259 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/31 05:36 upstream ef2a0b7cdbc5 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/30 10:00 upstream 6c1b980a7e79 ce731e62 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/30 03:31 upstream f97e18a3f2fb ce731e62 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/28 01:41 upstream 2dde18cd1d8f 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/26 20:25 upstream 3b35375f19fe 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/21 19:45 upstream f7757129e3de 6b415825 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/21 12:30 upstream f7757129e3de d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/20 06:08 upstream 9e6c269de404 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/19 13:33 upstream aa9ea98cca3a d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/18 07:54 upstream 0e8860d2125f 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/17 19:38 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/13 13:54 upstream a785fd28d31f 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/12 21:04 upstream ae545c3283dc 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/11 22:52 upstream 9106536c1aa3 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/11 04:38 upstream 25aa0bebba72 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/10 12:48 upstream 374a7f47bf40 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/08 12:42 upstream 14f9643dc90a 9552ae77 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/08 10:02 upstream 14f9643dc90a b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/07 11:30 upstream 52a93d39b17d 0ef3dfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/06 04:55 upstream f6a691685962 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/05 16:00 upstream 024ff300db33 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/04 20:42 upstream e6fda526d9db cdae481e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/04 18:41 upstream c1a515d3c027 cdae481e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/04 10:53 upstream c1a515d3c027 74621247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/08/02 16:56 upstream 5d0c230f1de8 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/28 21:40 upstream f837f0a3c948 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/28 13:32 upstream 57012c57536f 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/26 13:49 upstream 18b44bc5a672 2a509c27 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/25 17:05 upstream 0b5547c51827 6756545c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/24 09:27 upstream 6eaae1980760 b03242d7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2023/07/23 16:14 upstream c2782531397f 27cbe77f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2021/12/14 16:36 upstream 5472f14a3742 d018dd31 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
2021/11/02 13:42 upstream bfc484fe6abb 098b5d53 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __lru_add_drain_all / folio_add_lru
* Struck through repros no longer work on HEAD.