INFO: task hung in __schedule (3)

[syzbot]

Hello,

syzbot hit the following crash on net-next commit
e02f08a07098887733f92d8c5631432a3d94de6c

Unfortunately, I don't have any reproducer for this crash yet.
Raw console output is attached.
compiler: gcc (GCC) 7.1.1 20170620
.config is attached.
CC: []

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b82b09...@syzkaller.appspotmail.com
It will help syzbot understand when the bug is fixed. See footer for
details.
If you forward the report, please keep this part and the footer.

INFO: task syz-executor3:10976 blocked for more than 120 seconds.
Not tainted 4.15.0-rc7+ #192
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D23920 10976 4681 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2799 [inline]
__schedule+0x8eb/0x2060 kernel/sched/core.c:3375
? save_packet_write_wait: Connection to 216.239.38.127 port 9600: Broken
pipe


---
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[Dmitry Vyukov]

This is corrupted title (and is now detected as corrupted).

#syz invalid

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