syzbot


KCSAN: data-race in audit_log_start / skb_queue_tail

Status: auto-closed as invalid on 2021/10/21 14:26
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+93408477dcf4f9919bef@syzkaller.appspotmail.com
First crash: 1596d, last: 914d

Sample crash report:
==================================================================
BUG: KCSAN: data-race in audit_log_start / skb_queue_tail

write to 0xffffffff84168b48 of 4 bytes by task 30212 on cpu 1:
 __skb_insert include/linux/skbuff.h:1943 [inline]
 __skb_queue_before include/linux/skbuff.h:2048 [inline]
 __skb_queue_tail include/linux/skbuff.h:2081 [inline]
 skb_queue_tail+0x80/0xa0 net/core/skbuff.c:3310
 audit_log_end+0x171/0x1e0 kernel/audit.c:2389
 audit_seccomp+0xd9/0xf0 kernel/auditsc.c:2684
 seccomp_log kernel/seccomp.c:985 [inline]
 __seccomp_filter+0xdf5/0xe40 kernel/seccomp.c:1281
 __secure_computing+0xfb/0x140 kernel/seccomp.c:1311
 syscall_trace_enter+0x120/0x290 kernel/entry/common.c:68
 __syscall_enter_from_user_work kernel/entry/common.c:90 [inline]
 syscall_enter_from_user_mode+0x1c/0x20 kernel/entry/common.c:108
 do_syscall_64+0x25/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff84168b48 of 4 bytes by task 30215 on cpu 0:
 skb_queue_len include/linux/skbuff.h:1874 [inline]
 audit_log_start+0x19c/0x6b0 kernel/audit.c:1833
 audit_seccomp+0x45/0xf0 kernel/auditsc.c:2677
 seccomp_log kernel/seccomp.c:985 [inline]
 __seccomp_filter+0xdf5/0xe40 kernel/seccomp.c:1281
 __secure_computing+0xfb/0x140 kernel/seccomp.c:1311
 syscall_trace_enter+0x120/0x290 kernel/entry/common.c:68
 __syscall_enter_from_user_work kernel/entry/common.c:90 [inline]
 syscall_enter_from_user_mode+0x1c/0x20 kernel/entry/common.c:108
 do_syscall_64+0x25/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 30215 Comm:  y<ό<DbOεΓSο~Պ Tainted: G        W         5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (1180):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/09/16 14:25 upstream ff1ffd71d5f0 aae492f2 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/16 09:16 upstream ff1ffd71d5f0 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/15 19:50 upstream 80be5998ad63 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/15 06:14 upstream 3ca706c189db 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/14 16:45 upstream 1619b69edce1 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/14 15:29 upstream d0ee23f9d78b 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/14 08:33 upstream d0ee23f9d78b 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/13 19:15 upstream 316346243be6 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/13 17:27 upstream 6880fa6c5660 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/13 02:08 upstream 6880fa6c5660 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/12 13:07 upstream 78e709522d2c 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/11 23:59 upstream c605c39677b9 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/11 11:03 upstream 926de8c4326c 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/10 22:08 upstream e99f23c5bf59 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/10 10:03 upstream bf9f243f23e6 5ae8508a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/10 02:10 upstream bf9f243f23e6 e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/09 13:08 upstream a3fa7a101dcf e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/09 13:08 upstream a3fa7a101dcf e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/08 23:50 upstream 2d338201d531 e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/08 10:25 upstream ac08b1c68d1b e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/07 21:08 upstream 0bcfe68b8767 064c9eb7 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/07 19:13 upstream 0bcfe68b8767 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/06 23:11 upstream 4b93c544e90e 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/06 11:11 upstream 27151f177827 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/03 11:10 upstream a9c9a6f741cd d236a457 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/02 23:09 upstream 7ba88a2a09f4 f62a5829 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/02 10:11 upstream 4ac6d90867a4 d0f0970b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/02 07:54 upstream 4ac6d90867a4 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/09/01 19:08 upstream 835d31d319d9 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/31 15:35 upstream b91db6a0b52e 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/31 12:37 upstream b91db6a0b52e 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/30 23:24 upstream 8596e589b787 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/30 09:49 upstream 7d2a07b76933 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/29 21:21 upstream 537b57bd5a20 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/28 20:26 upstream 3f5ad13cb012 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/28 17:03 upstream 64b4fc45bea6 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/28 05:19 upstream 64b4fc45bea6 d5a29e53 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/27 18:39 upstream 1a6436f37512 57b01c6e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/27 17:36 upstream 77dd11439b86 57b01c6e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/27 10:07 upstream 77dd11439b86 b318694d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/26 08:42 upstream 73f3af7b4611 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/25 00:34 upstream 6e764bcd1cf7 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/24 06:04 upstream d5ae8d7f85b7 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/23 10:10 upstream e22ce8eb631b b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/22 21:26 upstream 1bdc3d5be7e1 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/22 07:59 upstream 9ff50bf2f2ff b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/21 18:34 upstream 002c0aef1090 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/21 04:44 upstream fa54d366a6e4 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/20 15:40 upstream d992fe5318d8 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/20 08:39 upstream f87d64319e6f b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/20 08:39 upstream f87d64319e6f b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/19 22:57 upstream f87d64319e6f e2da378b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/19 15:16 upstream d6d09a694205 e2da378b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/18 20:07 upstream d6d09a694205 a2fe1cb5 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/18 05:22 upstream 614cb2751d31 a2fe1cb5 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/17 14:40 upstream 794c7931a242 a2fe1cb5 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/17 02:30 upstream a2824f19e606 33c26cb7 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/08/16 13:24 upstream 7c60610d4767 6652437d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in audit_log_start / skb_queue_tail
2021/01/17 10:51 upstream 0da0a8a0a0e1 813be542 .config console log report info ci2-upstream-kcsan-gce
2020/09/28 03:34 upstream a1b8638ba132 5dd8aee8 .config console log report info ci2-upstream-kcsan-gce
2020/02/24 11:44 https://github.com/google/ktsan.git kcsan 766d004d1b85 1253d6f0 .config console log report ci2-upstream-kcsan-gce
2019/11/04 15:14 https://github.com/google/ktsan.git kcsan 94c006602e13 18e12644 .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.