possible deadlock in hfs_find_init
Status: upstream: reported C repro on 2018/04/23 01:02
Fix commit: b3b2177a2d79 hfs: add lock nesting notation to hfs_find_init
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 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-arm32]
First crash: 1274d, last: 281d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: possible deadlock in hfs_find_init (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
Patch testing requests:
Created Duration User Patch Repo Result
2021/06/29 13:59 13m patch upstream OK
2021/06/29 10:48 14m patch upstream OK
2021/06/29 07:16 8m patch upstream report log
2021/06/29 06:56 8m patch upstream report log

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2018/04/20 19:30 upstream 43f70c960180 cc402841 .config log report syz C