------------[ cut here ]------------
WARNING: CPU: 1 PID: 8526 at fs/overlayfs/file.c:81 ovl_change_flags fs/overlayfs/file.c:81 [inline]
WARNING: CPU: 1 PID: 8526 at fs/overlayfs/file.c:81 ovl_real_fdget_meta+0x49c/0x530 fs/overlayfs/file.c:132
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 8526 Comm: syz-executor.4 Not tainted 5.9.0-rc3-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+0x198/0x1fd lib/dump_stack.c:118
 panic+0x347/0x7c0 kernel/panic.c:231
 __warn.cold+0x20/0x46 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:81 [inline]
RIP: 0010:ovl_real_fdget_meta+0x49c/0x530 fs/overlayfs/file.c:132
Code: ff 4c 89 ff e8 85 81 2a ff e9 ff fc ff ff e8 7b 81 2a ff e9 c5 fc ff ff 4c 89 f7 e8 de 81 2a ff e9 5d fd ff ff e8 24 6f ea fe <0f> 0b 41 bd fb ff ff ff e9 fd fc ff ff e8 62 81 2a ff e9 84 fb ff
RSP: 0018:ffffc90016b27a78 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000002000 RCX: ffffc9001190b000
RDX: 0000000000040000 RSI: ffffffff8289dbdc RDI: 0000000000000005
RBP: 0000000004068002 R08: 0000000000000000 R09: ffffffff8c5f4af7
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88808e0cec80
R13: ffff888083a167b8 R14: 000000000002a002 R15: ffff88808e0ced00
 ovl_real_fdget fs/overlayfs/file.c:139 [inline]
 ovl_splice_read+0x83/0x1f0 fs/overlayfs/file.c:396
 do_splice_to+0x10b/0x170 fs/splice.c:870
 splice_direct_to_actor+0x307/0x980 fs/splice.c:950
 do_splice_direct+0x1b3/0x280 fs/splice.c:1059
 do_sendfile+0x55f/0xd40 fs/read_write.c:1540
 __do_sys_sendfile64 fs/read_write.c:1595 [inline]
 __se_sys_sendfile64 fs/read_write.c:1587 [inline]
 __x64_sys_sendfile64+0x149/0x210 fs/read_write.c:1587
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb3196b9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000027980 RCX: 000000000045d5b9
RDX: 0000000020000200 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000a198 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffc280f176f R14: 00007fb3196ba9c0 R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..