------------[ cut here ]------------
WARNING: CPU: 0 PID: 9982 at fs/overlayfs/file.c:55 ovl_change_flags fs/overlayfs/file.c:55 [inline]
WARNING: CPU: 0 PID: 9982 at fs/overlayfs/file.c:55 ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:106
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 9982 Comm: syz-executor.0 Not tainted 5.5.0-rc6-next-20200116-syzkaller #0
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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:176 [inline]
 fixup_bug arch/x86/kernel/traps.c:171 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:55 [inline]
RIP: 0010:ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:106
Code: ff 4c 89 f7 e8 6e d9 2c ff e9 fb fc ff ff e8 64 d9 2c ff e9 c7 fc ff ff 4c 89 f7 e8 f7 d9 2c ff e9 5e fd ff ff e8 dd 41 ee fe <0f> 0b 41 bc fb ff ff ff e9 f9 fc ff ff e8 5b d9 2c ff e9 85 fb ff
RSP: 0018:ffffc9000879fd10 EFLAGS: 00010216
RAX: 0000000000040000 RBX: 0000000004149002 RCX: ffffc90006231000
RDX: 0000000000007967 RSI: ffffffff828755f3 RDI: 0000000000000005
RBP: ffffc9000879fd40 R08: ffff888051b80280 R09: ffff888051b80b18
R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: 000000000014b002
R13: ffff8880a795c780 R14: ffff8880a795c7f8 R15: ffff888096e9c488
 ovl_real_fdget fs/overlayfs/file.c:113 [inline]
 ovl_real_ioctl+0x84/0x190 fs/overlayfs/file.c:396
 ovl_ioctl+0x201/0x330 fs/overlayfs/file.c:512
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x123/0x180 fs/ioctl.c:760
 __do_sys_ioctl fs/ioctl.c:769 [inline]
 __se_sys_ioctl fs/ioctl.c:767 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:767
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45aff9
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f68f7c1dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f68f7c1e6d4 RCX: 000000000045aff9
RDX: 0000000000000000 RSI: 00000000801c581f RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000002d2 R14: 00000000004c3a09 R15: 000000000075bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..