syzbot


general protection fault in set_task_ioprio
Status: upstream: reported C repro on 2021/12/21 03:04
Reported-by: syzbot+8836466a79f4175961b0@syzkaller.appspotmail.com
Fix commit: a957b61254a7 block: fix error in handling dead task for ioprio setting
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte 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-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 35d, last: 33d

Cause bisection: introduced by (bisect log) :
commit e4b8954074f6d0db01c8c97d338a67f9389c042f
Author: Eric Dumazet <edumazet@google.com>
Date: Tue Dec 7 01:30:37 2021 +0000

  netlink: add net device refcount tracker to struct ethnl_req_info

Crash: WARNING in ref_tracker_dir_exit (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/12/21 03:34 12m axboe@kernel.dk git://git.kernel.dk/linux-block for-next OK

Sample crash report:

Crashes (19):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/12/21 01:44 linux-next 07f8c60fe60f 62bd192b .config log report syz C general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/22 05:49 linux-next 07f8c60fe60f 6caa12e4 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/22 05:06 linux-next 07f8c60fe60f 6caa12e4 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/22 03:00 linux-next 07f8c60fe60f 6caa12e4 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/21 22:56 linux-next 07f8c60fe60f a938f0b8 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/21 19:25 linux-next 07f8c60fe60f a938f0b8 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/21 15:12 linux-next 07f8c60fe60f a938f0b8 .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/21 03:02 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 23:12 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 23:00 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 22:48 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 19:54 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 19:39 linux-next 07f8c60fe60f 62bd192b .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 17:05 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 16:50 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 16:42 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 15:11 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 14:36 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio
ci-upstream-linux-next-kasan-gce-root 2021/12/20 12:49 linux-next 07f8c60fe60f 021b36cb .config log report info general protection fault in set_task_ioprio