syzbot


kernel BUG at fs/inode.c:LINE! (2)
Status: upstream: reported C repro on 2020/08/28 13:18
Reported-by: syzbot+c92c93d1f1aaaacdb9db@syzkaller.appspotmail.com
First crash: 338d, last: 295d

Cause bisection: introduced by (bisect log) :
commit a9ed4a6560b8562b7e2e2bed9527e88001f7b682
Author: Marc Zyngier <maz@kernel.org>
Date: Wed Aug 19 16:12:17 2020 +0000

  epoll: Keep a reference on files added to the check list

Crash: WARNING: ODEBUG bug in exit_to_user_mode_prepare (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) [merge commit]:
commit 0fdf68c767c08004ff3a2fc032a139bdaf7826c5
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu Sep 3 15:22:16 2020 +0000

  Merge tag 'media/v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG in iput C 6 21d 57d 0/1 upstream: reported C repro on 2021/06/01 01:19
linux-4.19 kernel BUG at fs/inode.c:LINE! syz done 2 330d 359d 1/1 fixed on 2020/10/01 20:29
linux-4.19 kernel BUG at fs/inode.c:LINE! (2) C done 5 92d 231d 1/1 fixed on 2021/05/29 15:40
linux-4.14 kernel BUG at fs/inode.c:LINE! 1 444d 444d 0/1 auto-closed as invalid on 2020/09/07 09:12
android-54 kernel BUG at fs/inode.c:LINE! C 5 325d 334d 0/1 upstream: reported C repro on 2020/08/27 14:35
upstream kernel BUG at fs/inode.c:LINE! C done 2 955d 954d 13/22 fixed on 2019/04/12 21:13
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/02 00:01 9m anant.thazhemadam@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
2020/09/02 00:00 10m anant.thazhemadam@gmail.com https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
2020/09/01 23:59 4m anant.thazhemadam@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master error
2020/09/01 21:32 17m anant.thazhemadam@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK
2020/09/01 21:30 17m anant.thazhemadam@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK
2020/08/31 05:16 4m anant.thazhemadam@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master error
2020/08/31 05:08 10m anant.thazhemadam@gmail.com https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log

Sample crash report:

Crashes (37):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/09/02 21:13 upstream 9c7d619be5a0 abf9ba4f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/29 06:31 upstream 96d454cd2c16 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-root 2020/08/29 02:17 upstream 96d454cd2c16 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/28 00:49 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/28 00:29 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-root 2020/08/28 00:20 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-root 2020/08/27 14:57 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/27 14:57 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/27 14:49 upstream 15bc20c6af4c 816e0689 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/24 23:15 upstream d012a7190fc1 67b599d1 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/09/03 15:20 net 1996cf46e467 abf9ba4f .config log report syz C
ci-upstream-net-this-kasan-gce 2020/08/31 22:34 net bb8872a1e6bc d5a3ae1f .config log report syz C
ci-upstream-net-this-kasan-gce 2020/08/27 14:56 net 5875568aa187 816e0689 .config log report syz C
ci-upstream-net-kasan-gce 2020/09/03 13:45 net-next d3dfc362e073 abf9ba4f .config log report syz C
ci-upstream-net-kasan-gce 2020/08/31 22:48 net-next c30a3c957c88 d5a3ae1f .config log report syz C
ci-upstream-net-kasan-gce 2020/08/28 20:20 net-next 0baf01942d3d d5a3ae1f .config log report syz C
ci-upstream-net-kasan-gce 2020/08/27 14:55 net-next f09665811b14 816e0689 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/29 18:09 linux-next b36c969764ab d5a3ae1f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/28 00:30 linux-next 88abac0b753d 816e0689 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/27 15:05 linux-next 88abac0b753d 816e0689 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/25 13:58 linux-next 3a00d3dfd4b6 344da168 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/25 07:10 linux-next d8be0e12a522 344da168 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/25 06:33 linux-next d8be0e12a522 344da168 .config log report syz C
ci-upstream-kasan-gce-root 2020/08/31 22:17 upstream f75aef392f86 d5a3ae1f .config log report syz
ci-upstream-kasan-gce-smack-root 2020/08/31 12:07 upstream dcc5c6f013d8 d5a3ae1f .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/08/27 01:51 upstream 2ac69819ba9e 318430cb .config log report syz
ci-upstream-kasan-gce-386 2020/08/30 19:30 upstream 1127b219ce94 d5a3ae1f .config log report syz
ci-upstream-net-this-kasan-gce 2020/08/27 02:03 net 2e1ec861a605 318430cb .config log report syz
ci-upstream-net-kasan-gce 2020/09/03 22:44 net-next 22b330b622e3 abf9ba4f .config log report syz
ci-upstream-net-kasan-gce 2020/08/26 22:39 net-next ea416e277f09 318430cb .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/08/26 23:21 linux-next f37be72473a0 318430cb .config log report syz
ci-upstream-kasan-gce 2020/09/15 21:10 upstream fc4f28bb3daf 6989d6f6 .config log report info
ci-upstream-kasan-gce 2020/09/03 05:06 upstream fc3abb53250a abf9ba4f .config log report
ci-upstream-kasan-gce-selinux-root 2020/09/02 03:46 upstream b765a32a2e91 abf9ba4f .config log report
ci-upstream-kasan-gce-smack-root 2020/08/27 22:16 upstream 15bc20c6af4c 816e0689 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/24 13:14 upstream d012a7190fc1 67b599d1 .config log report
ci-upstream-kasan-gce-386 2020/10/06 04:54 upstream 7575fdda569b 1880b4a9 .config log report info