syzbot


possible deadlock in snd_hrtimer_callback
Status: internal: reported C repro on 2021/07/24 19:14
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: f671a691e299 fcntl: fix potential deadlocks for &fown_struct.lock
Patched on: [ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-riscv64 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 54d, last: 3h21m

Cause bisection: introduced by (bisect log) :
commit e918188611f073063415f40fae568fa4d86d9044
Author: Boqun Feng <boqun.feng@gmail.com>
Date: Fri Aug 7 07:42:20 2020 +0000

  locking: More accurate annotations for read_lock()

Crash: possible deadlock in snd_hrtimer_callback (log)
Repro: C syz .config

Sample crash report:

Crashes (190):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/08/31 04:33 upstream 7d2a07b76933 8f58a0ef .config log report syz C possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/07/25 08:59 upstream 6498f6151825 4d1b57d4 .config log report syz C possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/09/17 04:14 upstream bdb575f87217 5b989942 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/09/17 02:50 upstream bdb575f87217 5b989942 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/09/16 16:04 upstream ff1ffd71d5f0 aae492f2 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/09/16 13:38 upstream ff1ffd71d5f0 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/09/16 03:17 upstream b7213ffa0e58 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/16 00:58 upstream b7213ffa0e58 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/09/16 00:01 upstream b7213ffa0e58 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/15 13:43 upstream 3ca706c189db 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-selinux-root 2021/09/15 11:40 upstream 3ca706c189db 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/14 20:00 upstream 1619b69edce1 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/14 16:39 upstream d0ee23f9d78b 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/14 02:33 upstream d0ee23f9d78b 58d09404 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/13 13:44 upstream 6880fa6c5660 3ce60af8 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/13 12:04 upstream 6880fa6c5660 3ce60af8 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/12 22:27 upstream f306b90c69ce 5ae8508a .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/11 21:33 upstream c605c39677b9 5ae8508a .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/09 16:56 upstream a3fa7a101dcf e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/09 15:36 upstream a3fa7a101dcf e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/09 02:55 upstream 2d338201d531 e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/09/09 01:10 upstream 2d338201d531 e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-selinux-root 2021/09/08 14:19 upstream ac08b1c68d1b e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/09/08 00:33 upstream a2b28235335f 064c9eb7 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-selinux-root 2021/09/06 16:02 upstream 27151f177827 6ca60148 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/30 17:25 upstream 7d2a07b76933 8f58a0ef .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/30 15:40 upstream 7d2a07b76933 8f58a0ef .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/30 14:21 upstream 7d2a07b76933 8f58a0ef .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/30 04:49 upstream 90ac80dcd313 be2c130d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/30 02:42 upstream 90ac80dcd313 be2c130d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/28 20:33 upstream 3f5ad13cb012 be2c130d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/28 14:24 upstream 64b4fc45bea6 be2c130d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/28 13:21 upstream 77dd11439b86 be2c130d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/28 11:42 upstream 64b4fc45bea6 d5a29e53 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/27 22:45 upstream 77dd11439b86 d5a29e53 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/27 21:34 upstream 1a6436f37512 d5a29e53 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/27 11:09 upstream 77dd11439b86 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/27 10:02 upstream 77dd11439b86 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/08/27 09:13 upstream 77dd11439b86 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/26 21:51 upstream 1a6d80ff2419 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/26 20:38 upstream 1a6d80ff2419 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-smack-root 2021/08/26 19:04 upstream 73f3af7b4611 b318694d .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/26 12:46 upstream 73f3af7b4611 b599f2fc .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/08/26 11:31 upstream 73f3af7b4611 b599f2fc .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce-root 2021/08/25 22:45 upstream fe67f4dd8daa b599f2fc .config log report info possible deadlock in snd_hrtimer_callback
ci-qemu-upstream 2021/07/31 14:36 upstream c7d102232649 6c236867 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-kasan-gce 2021/07/24 19:13 upstream f0fddcec6b62 4d1b57d4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/16 09:52 linux-next 368847b165bb 07e953c1 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/14 10:32 linux-next 815c5020b5ab 58d09404 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/14 00:41 linux-next 24a36d3171e4 58d09404 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/13 10:50 linux-next 24a36d3171e4 3ce60af8 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/13 07:28 linux-next 24a36d3171e4 5ae8508a .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/13 04:51 linux-next 24a36d3171e4 5ae8508a .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/10 08:13 linux-next aa14a3016182 e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/09 10:09 linux-next f7f581157d1c e2776ee4 .config log report info possible deadlock in snd_hrtimer_callback
ci-upstream-linux-next-kasan-gce-root 2021/09/07 09:27 linux-next b2bb710d34d5 6ca60148 .config log report info possible deadlock in snd_hrtimer_callback