------------[ cut here ]------------
WARNING: CPU: 1 PID: 23041 at fs/overlayfs/dir.c:212 ovl_create_real+0x3f4/0x480 fs/overlayfs/dir.c:212
Modules linked in:
CPU: 1 PID: 23041 Comm: syz-executor.3 Not tainted 5.15.0-rc1-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 70 e0 cd 8d 48 c7 c6 c0 8f 90 8a 4c 89 f2 44 89 e9 41 89 d8 31 c0 e8 a6 0e 59 01 e9 e0 fe ff ff e8 5c 3c 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:ffffc9001b53f4e0 EFLAGS: 00010287
RAX: ffffffff82d73904 RBX: ffff88801ba1b380 RCX: 0000000000040000
RDX: ffffc9000fe74000 RSI: 000000000001b277 RDI: 000000000001b278
RBP: ffffc9001b53f590 R08: ffffffff82d737f2 R09: ffffed100fd350fb
R10: ffffed100fd350fb R11: 0000000000000000 R12: 1ffff920036a7ea0
R13: dffffc0000000000 R14: ffff88801ba1b318 R15: 1ffff920036a7ea4
FS:  00007ff430f01700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f709f3b4e04 CR3: 00000000b0cf6000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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: 0033:0x7ff43398a739