syzbot


KASAN: use-after-free Read in io_wqe_worker
Status: upstream: reported C repro on 2020/09/26 10:58
Reported-by: syzbot+9af99580130003da82b1@syzkaller.appspotmail.com
Fix commit: c4068bf8 io-wq: fix use-after-free in io_wq_worker_running
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 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-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 34d, last: 28d

Cause bisection: failed (bisect log)
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/26 12:57 17m axboe@kernel.dk git://git.kernel.dk/linux-block.git 41d5f92f60a61e264dafbada79175dad0bc60c5b OK
2020/09/26 12:22 16m axboe@kernel.dk git://git.kernel.dk/linux-block io_uring-5.9 OK

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-smack-root 2020/09/22 10:51 upstream 98477740 9e1fa68e .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/09/27 23:42 upstream a1bffa48 5dd8aee8 .config log report info axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk