syzbot


INFO: rcu detected stall in ext4_file_write_iter (4)
Status: upstream: reported C repro on 2021/12/22 17:33
Reported-by: syzbot+03464269af631f4a4bdf@syzkaller.appspotmail.com
First crash: 75d, last: 6d21h

Cause bisection: introduced by (bisect log) [no-op commit]:
commit 38f703663d4c82ead5b51b8860deeef19d6dcb6d
Author: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue Jul 27 10:32:51 2021 +0000

  KVM: arm64: Count VMID-wide TLB invalidations

Crash: INFO: rcu detected stall in corrupted (log)
Repro: C syz .config
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in ext4_file_write_iter (3) 5 171d 260d 0/22 auto-closed as invalid on 2021/11/07 19:52
android-49 INFO: rcu detected stall in ext4_file_write_iter syz 2 969d 1010d 0/3 public: reported syz repro on 2019/04/23 08:58
upstream INFO: rcu detected stall in ext4_file_write_iter (2) 1 472d 472d 0/22 auto-closed as invalid on 2021/01/10 12:58
linux-4.14 INFO: rcu detected stall in ext4_file_write_iter C 7 6d08h 1021d 0/1 upstream: reported C repro on 2019/04/12 16:30
upstream INFO: rcu detected stall in ext4_file_write_iter C inconclusive done 93 534d 1066d 17/22 fixed on 2020/09/25 01:17
linux-4.19 INFO: rcu detected stall in ext4_file_write_iter C error 7 128d 1013d 0/1 upstream: reported C repro on 2019/04/20 13:09
linux-4.19 BUG: soft lockup in ext4_file_write_iter 1 216d 216d 0/1 auto-closed as invalid on 2021/10/22 22:26

Sample crash report:

Crashes (58):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/12/24 04:24 upstream 76657eaef4a7 6caa12e4 .config log report syz C INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/18 17:25 upstream 9eaa88c7036e 44068e19 .config log report syz C INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2022/01/21 00:34 upstream fa2e1ba3e9e3 b838eb76 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2022/01/20 01:13 upstream 1d1df41c5a33 5da9499f .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2022/01/06 05:27 upstream 49ef78e59b07 6acc789a .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2022/01/02 00:47 upstream 278218f6778b e1768e9c .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/31 15:40 upstream 4f3d93c6eaff 36bd2e48 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/31 14:20 upstream 4f3d93c6eaff 36bd2e48 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/31 03:23 upstream 74c78b4291b4 36bd2e48 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/31 03:21 upstream 74c78b4291b4 36bd2e48 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/28 23:07 upstream ecf71de775a0 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/28 20:21 upstream a8ad9a2434dc 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/28 18:42 upstream a8ad9a2434dc 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/28 17:30 upstream a8ad9a2434dc 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/28 10:10 upstream a8ad9a2434dc 6b3c5e64 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/25 22:11 upstream e2ae0d4a6b0b 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/24 14:09 upstream 7a29b11da965 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/24 01:10 upstream 76657eaef4a7 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2021/12/23 06:16 upstream 3f066e882bf1 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/23 06:09 upstream 3f066e882bf1 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/22 02:27 upstream 2f47a9a4dfa3 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/22 01:43 upstream 2f47a9a4dfa3 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/21 18:23 upstream 6e0567b73052 a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2021/12/21 18:04 upstream 6e0567b73052 a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2021/12/21 17:51 upstream 6e0567b73052 a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2021/12/21 17:51 upstream 6e0567b73052 a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/18 13:21 upstream 9eaa88c7036e 44068e19 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/14 15:15 upstream 5472f14a3742 d018dd31 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/12 03:49 upstream 6f513529296f 49ca1f59 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/12 03:39 upstream 6f513529296f 49ca1f59 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/12 03:29 upstream 6f513529296f 49ca1f59 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/12 03:29 upstream 6f513529296f 49ca1f59 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/09 16:59 upstream 2a987e65025e b54aa474 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-smack-root 2021/12/08 16:33 upstream 2a987e65025e a4a2a501 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-selinux-root 2021/12/07 18:53 upstream cd8c917a56f2 0230ba3e .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-kasan-gce-root 2021/11/13 00:26 upstream 7246f4dcaccc 83f5c9b5 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-bpf-kasan-gce 2021/11/22 04:42 bpf c0d95d3380ee 4eb20a4e .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-net-kasan-gce 2022/01/18 13:59 net-next fe8152b38d3a 731a2d23 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-bpf-next-kasan-gce 2022/01/12 23:10 bpf-next 775a64e3845c 44d1319a .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-bpf-next-kasan-gce 2022/01/11 23:34 bpf-next 775a64e3845c 44d1319a .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-net-kasan-gce 2022/01/04 04:25 net-next 7590fc6f80ac 7f723fbe .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/31 08:39 linux-next ea586a076e8a 36bd2e48 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/28 23:01 linux-next ea586a076e8a 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/28 22:34 linux-next ea586a076e8a 76c8cf06 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/28 10:19 linux-next ea586a076e8a 6b3c5e64 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/23 16:27 linux-next 79f063d60c8c 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/22 17:31 linux-next 2bd48302750c 6caa12e4 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/21 17:44 linux-next 07f8c60fe60f a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/21 17:43 linux-next 07f8c60fe60f a938f0b8 .config log report info INFO: rcu detected stall in ext4_file_write_iter
ci-upstream-linux-next-kasan-gce-root 2021/12/15 12:24 linux-next ea922272cbe5 f752fb53 .config log report info INFO: rcu detected stall in ext4_file_write_iter