RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000002663914
R13: 00000000004bfce6 R14: 00000000004d1a58 R15: 0000000000000004
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6907 at arch/x86/mm/pat.c:1020 untrack_pfn+0x1dc/0x220 arch/x86/mm/pat.c:1020
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6907 Comm: syz-executor.0 Not tainted 4.14.139 #35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:untrack_pfn+0x1dc/0x220 arch/x86/mm/pat.c:1020
RSP: 0018:ffff888097187948 EFLAGS: 00010297
RAX: ffff888089f5e2c0 RBX: ffff88808ba54778 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8880971879d8 R08: ffff888089f5e2c0 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888089f5e2c0 R12: 1ffff11012e30f2a
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880971879b0
 unmap_single_vma+0x182/0x2c0 mm/memory.c:1539
 unmap_vmas+0xac/0x170 mm/memory.c:1590
 exit_mmap+0x285/0x4e0 mm/mmap.c:3062
 __mmput kernel/fork.c:935 [inline]
 mmput+0x114/0x440 kernel/fork.c:956
 dup_mm kernel/fork.c:1224 [inline]
 copy_mm kernel/fork.c:1263 [inline]
 copy_process.part.0+0x4743/0x6a00 kernel/fork.c:1780
 copy_process kernel/fork.c:1595 [inline]
 _do_fork+0x19e/0xce0 kernel/fork.c:2085
 SYSC_clone kernel/fork.c:2195 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2189
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007ffc3c81bb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc3c81bb40 RCX: 0000000000459829
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000002663914
R13: 00000000004bfce6 R14: 00000000004d1a58 R15: 0000000000000004
Kernel Offset: disabled
Rebooting in 86400 seconds..