syzbot


KCSAN: data-race in kauditd_thread / skb_queue_tail

Status: auto-closed as invalid on 2021/10/21 13:48
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+a9a394e8954976475007@syzkaller.appspotmail.com
First crash: 1608d, last: 914d

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

write to 0xffffffff84168b48 of 4 bytes by task 11623 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 22 on cpu 0:
 skb_queue_len include/linux/skbuff.h:1874 [inline]
 kauditd_thread+0x612/0x6e0 kernel/audit.c:881
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

value changed: 0x00000001 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22 Comm: kauditd Tainted: G        W         5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
==================================================================
BUG: KCSAN: data-race in kauditd_thread / skb_queue_tail

write to 0xffffffff84168b48 of 4 bytes by task 11670 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 22 on cpu 0:
 skb_queue_len include/linux/skbuff.h:1874 [inline]
 kauditd_thread+0x53c/0x6e0 kernel/audit.c:881
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22 Comm: kauditd Tainted: G        W         5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
==================================================================
BUG: KCSAN: data-race in kauditd_thread / skb_queue_tail

write to 0xffffffff84168b48 of 4 bytes by task 11711 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 22 on cpu 0:
 skb_queue_len include/linux/skbuff.h:1874 [inline]
 kauditd_thread+0x4d7/0x6e0 kernel/audit.c:881
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22 Comm: kauditd Tainted: G        W         5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (1396):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/09/16 13:47 upstream ff1ffd71d5f0 aae492f2 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/16 08:28 upstream ff1ffd71d5f0 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/15 19:23 upstream 80be5998ad63 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/15 05:47 upstream 3ca706c189db 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/14 16:53 upstream 1619b69edce1 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/14 15:19 upstream d0ee23f9d78b 07e953c1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/14 08:22 upstream d0ee23f9d78b 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/13 19:08 upstream 316346243be6 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/13 17:26 upstream 6880fa6c5660 58d09404 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/13 02:11 upstream 6880fa6c5660 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/12 13:12 upstream 78e709522d2c 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/11 23:56 upstream c605c39677b9 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/11 10:35 upstream 926de8c4326c 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/10 21:24 upstream e99f23c5bf59 3ce60af8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/10 09:29 upstream bf9f243f23e6 5ae8508a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/10 01:34 upstream bf9f243f23e6 e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/09 12:41 upstream a3fa7a101dcf e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/08 23:35 upstream 2d338201d531 e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/08 10:16 upstream ac08b1c68d1b e2776ee4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/07 20:45 upstream 0bcfe68b8767 064c9eb7 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/07 19:06 upstream 0bcfe68b8767 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/06 23:29 upstream 4b93c544e90e 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/06 10:21 upstream 27151f177827 6ca60148 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/03 10:30 upstream a9c9a6f741cd d236a457 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/02 22:00 upstream 4ac6d90867a4 f62a5829 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/02 10:03 upstream 4ac6d90867a4 d0f0970b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/02 08:13 upstream 4ac6d90867a4 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/09/01 18:20 upstream 835d31d319d9 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/31 15:20 upstream b91db6a0b52e 7eb7e152 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/31 12:33 upstream b91db6a0b52e 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/30 23:14 upstream 8596e589b787 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/30 09:44 upstream 7d2a07b76933 8f58a0ef .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/29 21:25 upstream 537b57bd5a20 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/28 19:44 upstream 3f5ad13cb012 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/28 17:25 upstream 64b4fc45bea6 be2c130d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/28 05:07 upstream 64b4fc45bea6 d5a29e53 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/27 17:24 upstream 77dd11439b86 57b01c6e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/27 09:29 upstream 77dd11439b86 b318694d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/26 20:59 upstream 1a6d80ff2419 b318694d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/26 18:48 upstream 73f3af7b4611 b318694d .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/26 16:02 upstream 73f3af7b4611 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/25 19:27 upstream fe67f4dd8daa b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/24 18:05 upstream 6e764bcd1cf7 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/24 00:14 upstream d5ae8d7f85b7 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/23 11:18 upstream e22ce8eb631b b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/22 20:53 upstream 1bdc3d5be7e1 b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/08/22 07:31 upstream 9ff50bf2f2ff b599f2fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in kauditd_thread / skb_queue_tail
2021/01/17 10:04 upstream 0da0a8a0a0e1 813be542 .config console log report info ci2-upstream-kcsan-gce
2020/09/28 02:19 upstream a1b8638ba132 5dd8aee8 .config console log report info ci2-upstream-kcsan-gce
2019/10/23 15:40 https://github.com/google/ktsan.git kcsan 05f2236801fe b602d64b .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.