syzbot


INFO: task hung in cangw_pernet_exit (3)
Status: upstream: reported syz repro on 2021/09/12 19:22
Reported-by: syzbot+c46e2a20b7d78a4e5c6a@syzkaller.appspotmail.com
First crash: 39d, last: 14d

Cause bisection: introduced by (bisect log) [no-op commit]:
commit c4690d5ad7f0d511e2c8d0922efc380b928eaf86
Author: Marco Elver <elver@google.com>
Date: Tue Sep 7 21:12:08 2021 +0000

  kbuild: Only default to -Werror if COMPILE_TEST

Crash: KFENCE: use-after-free in kvm_fastop_exception (log)
Repro: syz .config
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in cangw_pernet_exit 1 453d 453d 0/1 auto-closed as invalid on 2020/11/15 21:42
upstream INFO: task hung in cangw_pernet_exit 14 797d 1295d 0/22 closed as invalid on 2019/10/23 07:27
upstream INFO: task hung in cangw_pernet_exit (2) 85 201d 377d 0/22 auto-closed as invalid on 2021/06/26 13:07
upstream INFO: task can't die in cangw_pernet_exit 3 265d 306d 0/22 auto-closed as invalid on 2021/03/24 08:16

Sample crash report:

Crashes (36):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/09/08 19:12 linux-next 999569d59a0a e2776ee4 .config log report syz INFO: task can't die in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/30 15:19 upstream 02d5e016800d be530f6c .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-smack-root 2021/09/29 21:43 upstream 02d5e016800d be530f6c .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-smack-root 2021/09/29 06:57 upstream a4e6f95a891a d82cb927 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-smack-root 2021/09/28 00:39 upstream 0513e464f900 78494d16 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/27 03:42 upstream 996148ee05d0 78494d16 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/26 00:55 upstream a5e0aceabef6 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/24 21:56 upstream 4c4f0c2bf341 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/23 15:23 upstream 58e2cf5d7946 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/22 22:19 upstream cf1d2c3e7e2f 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-smack-root 2021/09/21 13:14 upstream d9fb678414c0 169724fe .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-root 2021/09/20 16:47 upstream e4e737bb5c17 af796c18 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/20 15:19 upstream e4e737bb5c17 af796c18 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/19 21:29 upstream bc1abb9e55ce 70b76c1d .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-root 2021/09/18 23:09 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/16 14:16 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/16 13:41 upstream ff1ffd71d5f0 07e953c1 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-root 2021/09/16 13:39 upstream ff1ffd71d5f0 07e953c1 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/14 19:54 upstream 1619b69edce1 07e953c1 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/14 18:50 upstream 1619b69edce1 07e953c1 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/14 15:16 upstream d0ee23f9d78b 07e953c1 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/14 09:03 upstream d0ee23f9d78b 58d09404 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/14 09:02 upstream d0ee23f9d78b 58d09404 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/14 01:44 upstream d0ee23f9d78b 58d09404 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-selinux-root 2021/09/12 09:21 upstream 78e709522d2c 5ae8508a .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce 2021/09/09 15:47 upstream a3fa7a101dcf e2776ee4 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/30 22:24 upstream 02d5e016800d 1d849ab4 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/24 05:52 upstream f9e36107ec70 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/24 04:18 upstream f9e36107ec70 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/24 03:41 upstream f9e36107ec70 8cac236e .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/11 19:31 upstream c605c39677b9 5ae8508a .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/11 18:33 upstream c605c39677b9 5ae8508a .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-kasan-gce-386 2021/09/09 00:38 upstream 0f4b9289bad3 e2776ee4 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-linux-next-kasan-gce-root 2021/09/20 14:14 linux-next 1f77990c4b79 af796c18 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-linux-next-kasan-gce-root 2021/09/14 07:29 linux-next 815c5020b5ab 58d09404 .config log report info INFO: task hung in cangw_pernet_exit
ci-upstream-linux-next-kasan-gce-root 2021/09/06 12:36 linux-next c1b13fe76e95 d236a457 .config log report info INFO: task hung in cangw_pernet_exit