Re: WARNING in ptrace_stop

2020-07-24 Thread Oleg Nesterov
On 07/23, syzbot wrote: > > do not call blocking ops when !TASK_RUNNING; state=8 set at > [<076362f5>] 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

WARNING in ptrace_stop

2020-07-23 Thread syzbot
Hello, syzbot found the following issue on: HEAD commit:92188b41 Merge tag 'perf-tools-fixes-2020-07-19' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=173963eb10 kernel config: https://syzkaller.appspot.com/x/.config?x=a160d1053fc89af5