syzbot


BUG: unable to handle kernel NULL pointer dereference in call_rcu
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+9d3ede723bdc58553f13@syzkaller.appspotmail.com
Fix commit: 13384f6125ad kasan: fix null pointer dereference in kasan_record_aux_stack
First crash: 268d, last: 261d

Cause bisection: introduced by (bisect log) :
commit 97593cad003c668e2532cb2939a24a031f8de52d
Author: Andrey Konovalov <andreyknvl@google.com>
Date: Tue Dec 22 20:03:28 2020 +0000

  kasan: sanitize objects when metadata doesn't fit

Crash: BUG: unable to handle kernel NULL pointer dereference in call_rcu (log)
Repro: C syz .config

Sample crash report:

Crashes (85):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/12/23 02:33 upstream 614cb5894306 04201c06 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/23 02:17 upstream 614cb5894306 04201c06 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/23 02:06 upstream 614cb5894306 04201c06 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/29 23:59 upstream dea8dcf2a9fa 80910769 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/29 22:33 upstream dea8dcf2a9fa 80910769 .config log report info
ci-qemu-upstream 2020/12/29 15:23 upstream dea8dcf2a9fa 856f7b87 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/29 09:43 upstream dea8dcf2a9fa 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/29 06:49 upstream dea8dcf2a9fa 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/29 04:55 upstream dea8dcf2a9fa 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/28 20:50 upstream 5c8fe583cce5 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/28 19:27 upstream 5c8fe583cce5 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/28 17:34 upstream 5c8fe583cce5 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/28 16:32 upstream 5c8fe583cce5 8259d56c .config log report info
ci-qemu-upstream 2020/12/28 14:54 upstream 5c8fe583cce5 8259d56c .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/28 06:08 upstream 5c8fe583cce5 2242f77f .config log report info
ci-qemu-upstream 2020/12/28 04:07 upstream 5c8fe583cce5 2242f77f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 19:39 upstream f838f8d2b694 2242f77f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 16:58 upstream f838f8d2b694 2242f77f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 15:41 upstream f838f8d2b694 2242f77f .config log report info
ci-qemu-upstream 2020/12/27 14:11 upstream f838f8d2b694 2242f77f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 12:05 upstream f838f8d2b694 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 11:50 upstream f838f8d2b694 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 05:19 upstream f838f8d2b694 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/27 04:08 upstream f838f8d2b694 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 16:54 upstream 40f78232f973 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 15:30 upstream 40f78232f973 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 11:19 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 10:06 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 04:34 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 03:08 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 01:29 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/26 00:20 upstream 5814bc2d4cc2 821e0b09 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 23:44 upstream 5814bc2d4cc2 b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 16:28 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 16:06 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 16:04 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 16:04 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 15:05 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 15:05 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 15:05 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 13:39 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 12:18 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 11:19 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 10:06 upstream 71c5f03154ac b982b3ea .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 03:26 upstream 3913d00ac51a c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 03:25 upstream 3913d00ac51a c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 01:59 upstream 3913d00ac51a c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/25 00:44 upstream 3913d00ac51a c2c1d1dd .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/22 23:21 upstream 614cb5894306 04201c06 .config log report info