Re: WARNING in ptrace_stop
From: Oleg Nesterov
Date: Fri Jul 24 2020 - 02:02:59 EST
On 07/23, syzbot wrote:
>
> do not call blocking ops when !TASK_RUNNING; state=8 set at [<00000000076362f5>] ptrace_stop+0x0/0x9e0 kernel/signal.c:2054
> WARNING: CPU: 1 PID: 17054 at kernel/sched/core.c:6883 __might_sleep+0x135/0x190 kernel/sched/core.c:6883
#syz fix: sched: Fix race against ptrace_freeze_trace()