syzbot


INFO: task can't die in perf_event_free_task
Status: upstream: reported syz repro on 2020/11/19 15:42
Reported-by: syzbot+f02b92479b7065807a2a@syzkaller.appspotmail.com
First crash: 64d, last: 64d

Cause bisection: introduced by (bisect log) [no-op commit]:
commit ab2dd173330a3f07142e68cd65682205036cd00f
Author: Andy Lutomirski <luto@kernel.org>
Date: Wed Aug 26 17:00:45 2020 +0000

  selftests/x86/fsgsbase: Reap a forgotten child

Crash: INFO: task hung in perf_event_free_task (log)
Repro: syz .config

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-linux-next-kasan-gce-root 2020/11/15 15:35 linux-next 92edc4ae 1bf9a662 .config log report syz acme@kernel.org, alexander.shishkin@linux.intel.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, jolsa@redhat.com, kafai@fb.com, kpsingh@chromium.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, songliubraving@fb.com, yhs@fb.com