syzbot


general protection fault in io_uring_register
Status: upstream: reported syz repro on 2021/09/13 18:32
Reported-by: syzbot+337de45f13a4fd54d708@syzkaller.appspotmail.com
Fix commit: 41d3a6bd1d37 io_uring: pin SQPOLL data before unlocking ring lock
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-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-kmsan-gce ci-upstream-kmsan-gce-386 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]
First crash: 88d, last: 88d

Cause bisection: introduced by (bisect log) :
commit fa84693b3c896460831fe0750554121121a23da8
Author: Jens Axboe <axboe@kernel.dk>
Date: Wed Sep 1 20:15:59 2021 +0000

  io_uring: ensure IORING_REGISTER_IOWQ_MAX_WORKERS works with SQPOLL

Crash: general protection fault in io_uring_register (log)
Repro: syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/09/13 19:11 26m axboe@kernel.dk git://git.kernel.dk/linux-block io_uring-5.15 OK

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/09/09 19:52 upstream a3fa7a101dcf e2776ee4 .config log report syz general protection fault in io_uring_register