------------[ cut here ]------------
WARNING: CPU: 1 PID: 17761 at fs/overlayfs/dir.c:212 ovl_create_real+0x3f4/0x480 fs/overlayfs/dir.c:212
Modules linked in:
CPU: 0 PID: 17761 Comm: syz-executor.5 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ovl_create_real+0x3f4/0x480 fs/overlayfs/dir.c:212
Code: ab fe 48 c7 c7 30 ff cd 8d 48 c7 c6 c0 95 90 8a 4c 89 f2 44 89 e9 41 89 d8 31 c0 e8 96 37 59 01 e9 e0 fe ff ff e8 6c 0b ab fe <0f> 0b bb fb ff ff ff 43 80 3c 2f 00 0f 85 ec fe ff ff e9 f1 fe ff
RSP: 0018:ffffc90003fdf4e0 EFLAGS: 00010283
RAX: ffffffff82d87e74 RBX: ffff88806b8084d0 RCX: 0000000000040000
RDX: ffffc90014568000 RSI: 000000000001ab30 RDI: 000000000001ab31
RBP: ffffc90003fdf590 R08: ffffffff82d87d62 R09: ffffed10031598fb
R10: ffffed10031598fb R11: 0000000000000000 R12: 1ffff920007fbea0
R13: dffffc0000000000 R14: ffff88806b808468 R15: 1ffff920007fbea4
FS:  00007fa550671700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa55064ffe8 CR3: 0000000076d4b000 CR4: 00000000003506f0
Call Trace:
 ovl_workdir_create+0x425/0x600 fs/overlayfs/super.c:790
 ovl_make_workdir+0xeb/0x12b0 fs/overlayfs/super.c:1364
 ovl_get_workdir fs/overlayfs/super.c:1511 [inline]
 ovl_fill_super+0x3e23/0x5d80 fs/overlayfs/super.c:2067
 mount_nodev+0x52/0xe0 fs/super.c:1414
 legacy_get_tree+0xea/0x180 fs/fs_context.c:610
 vfs_get_tree+0x86/0x270 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x1986/0x2c30 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x308/0x3c0 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa5530fba39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa550671188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa5531fef60 RCX: 00007fa5530fba39
RDX: 0000000020000280 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fa553155c5f R08: 00000000200004c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc4b6f89f R14: 00007fa550671300 R15: 0000000000022000