audit: type=1800 audit(1589937630.300:24): pid=9075 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="overlay" ino=15976 res=0
------------[ cut here ]------------
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
WARNING: CPU: 1 PID: 9075 at fs/overlayfs/file.c:58 ovl_change_flags fs/overlayfs/file.c:58 [inline]
WARNING: CPU: 1 PID: 9075 at fs/overlayfs/file.c:58 ovl_real_fdget_meta.cold+0x11/0x1e fs/overlayfs/file.c:109
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9075 Comm: syz-executor.1 Not tainted 4.19.123-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+0x188/0x20d lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x46 kernel/panic.c:541
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:58 [inline]
RIP: 0010:ovl_real_fdget_meta.cold+0x11/0x1e fs/overlayfs/file.c:109
Code: e9 f4 fd ff ff e8 de 35 45 ff e9 36 fe ff ff e8 d4 35 45 ff e9 4f fe ff ff e8 ca 4f 0f ff 48 c7 c7 e0 fa b4 87 e8 e7 6e fa fe <0f> 0b 41 bd fb ff ff ff e9 9b c8 ff ff e8 ac 4f 0f ff 48 c7 c7 e0
RSP: 0018:ffff88804c6d7e10 EFLAGS: 00010286
RAX: 0000000000000024 RBX: 0000000000002000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8152fd51 RDI: ffffed10098dafb4
RBP: 000000000404c000 R08: 0000000000000024 R09: ffffed1015ce5079
R10: ffffed1015ce5078 R11: ffff8880ae7283c7 R12: ffff8880922b90c0
R13: ffff8880411744f0 R14: 000000000000e000 R15: ffff8880922b9138
 ovl_real_fdget fs/overlayfs/file.c:116 [inline]
 ovl_llseek+0xe5/0x340 fs/overlayfs/file.c:166
 vfs_llseek fs/read_write.c:300 [inline]
 ksys_lseek+0x10b/0x1a0 fs/read_write.c:313
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca29
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7fc7cc1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00000000004f5600 RCX: 000000000045ca29
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000071f R14: 00000000004ca0ab R15: 00007f7fc7cc26d4
Kernel Offset: disabled
Rebooting in 86400 seconds..