------------[ cut here ]------------
WARNING: CPU: 1 PID: 10043 at fs/overlayfs/file.c:55 ovl_change_flags fs/overlayfs/file.c:55 [inline]
WARNING: CPU: 1 PID: 10043 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: 1 PID: 10043 Comm: syz-executor.2 Not tainted 5.5.0-rc6-next-20200115-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 0e df 2c ff e9 fb fc ff ff e8 04 df 2c ff e9 c7 fc ff ff 4c 89 f7 e8 97 df 2c ff e9 5e fd ff ff e8 fd 77 ee fe <0f> 0b 41 bc fb ff ff ff e9 f9 fc ff ff e8 fb de 2c ff e9 85 fb ff
RSP: 0018:ffffc90003f97570 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000004149002 RCX: ffffc9000d462000
RDX: 000000000002ada9 RSI: ffffffff8286c2c3 RDI: 0000000000000005
RBP: ffffc90003f975a0 R08: ffff888090fda340 R09: ffffed10150cf321
R10: ffffed10150cf320 R11: ffff8880a8679903 R12: 000000000014b002
R13: ffff8880a1653840 R14: ffff8880a16538b8 R15: ffff888096f7d248
 ovl_real_fdget fs/overlayfs/file.c:113 [inline]
 ovl_write_iter+0x3da/0xc20 fs/overlayfs/file.c:272
 call_write_iter include/linux/fs.h:1901 [inline]
 new_sync_write+0x4d3/0x770 fs/read_write.c:483
 __vfs_write+0xe1/0x110 fs/read_write.c:496
 __kernel_write+0x11b/0x3b0 fs/read_write.c:515
 write_pipe_buf+0x15d/0x1f0 fs/splice.c:809
 splice_from_pipe_feed fs/splice.c:512 [inline]
 __splice_from_pipe+0x3ee/0x7c0 fs/splice.c:636
 splice_from_pipe+0x108/0x170 fs/splice.c:671
 default_file_splice_write+0x3c/0x90 fs/splice.c:821
 do_splice_from fs/splice.c:863 [inline]
 direct_splice_actor+0x123/0x190 fs/splice.c:1037
 splice_direct_to_actor+0x3b4/0xa30 fs/splice.c:992
 do_splice_direct+0x1da/0x2a0 fs/splice.c:1080
 do_sendfile+0x597/0xd00 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1519 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x15a/0x220 fs/read_write.c:1511
 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:00007fd9ce024c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd9ce0256d4 RCX: 000000000045aff9
RDX: 00000000200001c0 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008a2 R14: 00000000004c9bce R15: 000000000075bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..