syzbot


possible deadlock in io_flush_timeouts
Status: upstream: reported on 2021/11/26 11:49
Reported-by: syzbot+847f02ec20a6609a328b@syzkaller.appspotmail.com
Fix commit: 6af3f48bf615 io_uring: fix link traversal locking
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: 59d, last: 58d
duplicates (1):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
possible deadlock in __io_commit_cqring_flush 10 57d 59d 21/22 closed as dup on 2021/11/26 14:28

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/11/27 18:40 upstream c5c17547b778 63eeac02 .config log report info possible deadlock in io_flush_timeouts
ci-upstream-kasan-gce-smack-root 2021/11/27 17:00 upstream c5c17547b778 63eeac02 .config log report info possible deadlock in io_flush_timeouts
ci-upstream-kasan-gce-smack-root 2021/11/26 12:21 upstream a4849f6000e2 63eeac02 .config log report info possible deadlock in io_flush_timeouts
ci-upstream-kasan-gce-smack-root 2021/11/26 10:25 upstream a4849f6000e2 63eeac02 .config log report info possible deadlock in io_flush_timeouts
ci-upstream-kasan-gce-smack-root 2021/11/26 09:54 upstream a4849f6000e2 63eeac02 .config log report info possible deadlock in io_flush_timeouts