------------[ cut here ]------------
WARNING: CPU: 1 PID: 28111 at mm/interval_tree.c:109 anon_vma_interval_tree_verify+0xfd/0x160 mm/interval_tree.c:109
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 28111 Comm: syz-executor.2 Not tainted 4.14.174-syzkaller #0
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+0x13e/0x194 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 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+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:anon_vma_interval_tree_verify+0xfd/0x160 mm/interval_tree.c:109
RSP: 0018:ffff88821ae1fa98 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8880001b1c40 RCX: ffffc9000aa3a000
RDX: 0000000000000569 RSI: ffffffff8177f91d RDI: ffff888094c6dae8
RBP: ffff888094c6da50 R08: 00000000000078d8 R09: ffffffff8a097f40
R10: ffff888057030e28 R11: ffff888057030580 R12: 00000007ffffffde
R13: 0000000000000000 R14: ffff88809279cb20 R15: ffff8880001b1c40
 validate_mm+0xfe/0x580 mm/mmap.c:361
 __vma_adjust+0xa21/0x1720 mm/mmap.c:960
 vma_adjust include/linux/mm.h:2100 [inline]
 __split_vma+0x57d/0x6c0 mm/mmap.c:2610
 do_munmap+0xad1/0xd30 mm/mmap.c:2702
 mmap_region+0x16e/0x1030 mm/mmap.c:1658
 do_mmap+0x5c1/0xcf0 mm/mmap.c:1495
 do_mmap_pgoff include/linux/mm.h:2173 [inline]
 vm_mmap_pgoff+0x14e/0x1a0 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1545 [inline]
 SyS_mmap_pgoff+0x3d2/0x520 mm/mmap.c:1503
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f4d76017c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f4d760186d4 RCX: 000000000045c849
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020000000
RBP: 000000000076bfa0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000010012 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000736 R14: 00000000004c9f65 R15: 000000000076bfac
Kernel Offset: disabled
Rebooting in 86400 seconds..