Killed process 9569 (syz-executor2) total-vm:72448kB, anon-rss:148kB, file-rss:34816kB, shmem-rss:0kB
Out of memory: Kill process 9684 (syz-executor3) score 1004 or sacrifice child
Killed process 9684 (syz-executor3) total-vm:72712kB, anon-rss:204kB, file-rss:34688kB, shmem-rss:0kB
oom_reaper: reaped process 9684 (syz-executor3), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4 at arch/x86/mm/pat.c:1019 untrack_pfn+0x234/0x280 arch/x86/mm/pat.c:1019
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4 Comm: kworker/0:0 Not tainted 4.9.154+ #21
Workqueue: events mmput_async_fn
 ffff8801da6677b0 ffffffff81b47411 0000000000000000 ffffffff82a39be0
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801da667890
 ffffffff813f725a 0000000041b58ab3 ffffffff82e35b02 ffffffff813f7081
Call Trace:
 [<ffffffff81b47411>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b47411>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<ffffffff813f725a>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<ffffffff813f749b>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<ffffffff810dae7d>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<ffffffff810bd774>] untrack_pfn+0x234/0x280 arch/x86/mm/pat.c:1019
 [<ffffffff8149b4d9>] unmap_single_vma+0x149/0x180 mm/memory.c:1315
 [<ffffffff8149bb98>] unmap_vmas+0x48/0xa0 mm/memory.c:1366
 [<ffffffff814b2133>] exit_mmap+0x1e3/0x3b0 mm/mmap.c:3021
 [<ffffffff810d1406>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d1406>] mmput_async_fn+0xb6/0x360 kernel/fork.c:914
 [<ffffffff8113001b>] process_one_work+0x88b/0x15c0 kernel/workqueue.c:2092
 [<ffffffff8113132f>] worker_thread+0x5df/0x11d0 kernel/workqueue.c:2226
 [<ffffffff81141e18>] kthread+0x278/0x310 kernel/kthread.c:211
 [<ffffffff8281665c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Kernel Offset: disabled
Rebooting in 86400 seconds..