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SubjectRe: WARNING in ptrace_stop
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()

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