overlayfs: './file0' not a directory
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11533 at fs/overlayfs/file.c:66 ovl_change_flags fs/overlayfs/file.c:66 [inline]
WARNING: CPU: 0 PID: 11533 at fs/overlayfs/file.c:66 ovl_real_fdget_meta+0x48a/0x520 fs/overlayfs/file.c:117
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 11533 Comm: syz-executor.1 Not tainted 5.6.0-rc5-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+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:66 [inline]
RIP: 0010:ovl_real_fdget_meta+0x48a/0x520 fs/overlayfs/file.c:117
Code: ff 4c 89 ff e8 e7 dc 31 ff e9 08 fd ff ff e8 dd dc 31 ff e9 d4 fc ff ff 4c 89 f7 e8 40 dd 31 ff e9 63 fd ff ff e8 06 1f f5 fe <0f> 0b 41 bd fb ff ff ff e9 03 fd ff ff e8 c4 dc 31 ff e9 96 fb ff
RSP: 0018:ffffc90004ad7bd8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000002000 RCX: ffffc90004f69000
RDX: 000000000000009f RSI: ffffffff827cf6aa RDI: 0000000000000005
RBP: 0000000004048000 R08: ffff8880a45fc140 R09: 0000000000000000
R10: fffffbfff14cba40 R11: ffffffff8a65d207 R12: ffff88808fdd6a00
R13: ffff888091c53948 R14: 000000000000a000 R15: ffff88808fdd6a78
 ovl_real_fdget fs/overlayfs/file.c:124 [inline]
 ovl_read_iter+0x10a/0x800 fs/overlayfs/file.c:276
 call_read_iter include/linux/fs.h:1895 [inline]
 new_sync_read+0x4a2/0x790 fs/read_write.c:414
 __vfs_read+0xc9/0x100 fs/read_write.c:427
 vfs_read+0x1ea/0x430 fs/read_write.c:461
 ksys_read+0x127/0x250 fs/read_write.c:587
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c4a9
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:00007fee96ac3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fee96ac46d4 RCX: 000000000045c4a9
RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000087b R14: 00000000004caf63 R15: 000000000076bfcc
Kernel Offset: disabled
Rebooting in 86400 seconds..