syzbot


WARNING in internal_create_group
Status: upstream: reported C repro on 2021/07/14 18:57
Reported-by: syzbot+9937dc42271cd87d4b98@syzkaller.appspotmail.com
Fix commit: b1a811633f73 block: nbd: add sanity check for first_minor
Patched on: [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-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-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-riscv64 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 68d, last: 11d

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

Sample crash report:

Crashes (20):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/07/20 18:53 upstream 8cae8cd89f05 1b201b48 .config log report syz C WARNING in internal_create_group
ci-upstream-kasan-gce-selinux-root 2021/08/20 09:45 upstream f87d64319e6f b599f2fc .config log report info WARNING in internal_create_group
ci-upstream-kasan-gce-root 2021/07/20 18:31 upstream 8cae8cd89f05 1b201b48 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/09/04 17:13 net 57f780f1c433 d236a457 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/09/03 17:05 net 57f780f1c433 f62a5829 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/08/27 09:09 net 73367f05b25d b318694d .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/08/25 05:31 net 3b0720ba00a7 b599f2fc .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/08/18 10:24 net 276e189f8e4e a2fe1cb5 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/08/16 16:42 net 19d1532a1876 33c26cb7 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/08/13 18:49 net a9a507013a6f 3fd2ea69 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/07/19 08:00 net 517a16b1a88b f115ae98 .config log report info WARNING in internal_create_group
ci-upstream-net-this-kasan-gce 2021/07/10 18:50 net 5d52c906f059 8f5a7b8c .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/09/06 05:58 net-next 29ce8f970107 d236a457 .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/08/24 12:08 net-next faf482ca196a b599f2fc .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/08/16 04:02 net-next e4637f621203 2489ab88 .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/08/12 22:04 net-next bed5a942e27e 3fd2ea69 .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/07/31 14:51 net-next 3e12361b6d23 6c236867 .config log report info WARNING in internal_create_group
ci-upstream-net-kasan-gce 2021/07/30 21:32 net-next 3e12361b6d23 6c236867 .config log report info WARNING in internal_create_group
ci-upstream-linux-next-kasan-gce-root 2021/08/08 04:21 linux-next 7999516e20bd 6972b106 .config log report info WARNING in internal_create_group
ci-upstream-linux-next-kasan-gce-root 2021/07/22 17:45 linux-next 7468cbf5c917 302e51de .config log report info WARNING in internal_create_group