WARNING: CPU: 0 PID: 15155 at mm/mempolicy.c:1745 policy_node mm/mempolicy.c:1745 [inline]
WARNING: CPU: 0 PID: 15155 at mm/mempolicy.c:1745 alloc_pages_vma+0x1bd/0x4a0 mm/mempolicy.c:2043
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 15155 Comm: syz-executor4 Not tainted 4.20.0-rc5+ #269
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
kobject: 'loop0' (0000000040581db4): kobject_uevent_env
 panic+0x2ad/0x55c kernel/panic.c:188
kobject: 'loop0' (0000000040581db4): fill_kobj_path: path = '/devices/virtual/block/loop0'
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:policy_node mm/mempolicy.c:1745 [inline]
RIP: 0010:alloc_pages_vma+0x1bd/0x4a0 mm/mempolicy.c:2043
Code: 5f 5d c3 e8 15 2f bf ff 45 89 ec 31 ff 41 81 e4 00 00 04 00 44 89 e6 e8 11 30 bf ff 45 85 e4 0f 84 50 ff ff ff e8 f3 2e bf ff <0f> 0b e9 44 ff ff ff e8 e7 2e bf ff e8 22 5e ff ff 48 89 c3 e9 6b
RSP: 0018:ffff8881559cead8 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8881da96f0f0 RCX: ffffc9000de46000
RDX: 000000000000064e RSI: ffffffff81c06ccd RDI: 0000000000000005
RBP: ffff8881559ceb18 R08: ffff888183036540 R09: ffffed1036e5f560
R10: ffffed1036e5f560 R11: ffff8881b72fab03 R12: 0000000000040000
R13: 00000000000742ca R14: ffff8881da96f0f8 R15: 0000000000000002
 do_huge_pmd_wp_page+0x1373/0x5fc0 mm/huge_memory.c:1299
 wp_huge_pmd mm/memory.c:3666 [inline]
 __handle_mm_fault+0x2ddc/0x5be0 mm/memory.c:3879
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0010:__put_user_4+0x1c/0x30 arch/x86/lib/putuser.S:68
Code: 1f 00 c3 90 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 1c 25 40 ee 01 00 48 8b 9b 18 14 00 00 48 83 eb 03 48 39 d9 73 3c 0f 1f 00 <89> 01 31 c0 0f 1f 00 c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 65 48
RSP: 0018:ffff8881559cfca8 EFLAGS: 00010297
RAX: 0000000000000005 RBX: 00007fffffffeffd RCX: 00000000200006c0
RDX: 000000000000005a RSI: ffffffff81b1b3f3 RDI: 0000000000000286
RBP: ffff8881559cfda0 R08: 1ffff1102ab39f72 R09: 0000000000000008
R10: 0000000000000001 R11: ffff888183036540 R12: 0000000000000005
R13: 00000000200006c0 R14: 0000000000000003 R15: dffffc0000000000
 __do_sys_socketpair net/socket.c:1458 [inline]
 __se_sys_socketpair net/socket.c:1455 [inline]
 __ia32_sys_socketpair+0x96/0xf0 net/socket.c:1455
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fc5a29
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5fc10cc EFLAGS: 00000296 ORIG_RAX: 0000000000000168
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000000003
RDX: 0000000000000000 RSI: 00000000200006c0 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..