------------[ cut here ]------------
WARNING: CPU: 0 PID: 6189 at fs/file.c:1201 file_seek_cur_needs_f_lock+0x141/0x190 fs/file.c:1201
Modules linked in:
CPU: 0 UID: 0 PID: 6189 Comm: syz.4.71 Not tainted 6.14.0-syzkaller-13546-g16cd1c265776 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:file_seek_cur_needs_f_lock+0x141/0x190 fs/file.c:1201
Code: 31 ff 89 c3 89 c6 e8 0e 9e 7f ff 84 db 74 15 e8 25 a3 7f ff bb 01 00 00 00 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 10 a3 7f ff 90 <0f> 0b 90 eb e0 e8 05 a3 7f ff 31 db 89 d8 5b 5d 41 5c c3 cc cc cc
RSP: 0018:ffffc90003f07df8 EFLAGS: 00010283
RAX: 0000000000000054 RBX: 0000000000000000 RCX: ffffc9000cce3000
RDX: 0000000000080000 RSI: ffffffff823b9b00 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: bfffffffffffffff
R13: 0000000000000005 R14: 7fffffffffffffff R15: ffff88807e16cfe0
FS:  00007f33349116c0(0000) GS:ffff8881249b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61679ebaa8 CR3: 0000000035c6c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_file_llseek_size+0x153/0x480 fs/read_write.c:178
 shmem_file_llseek+0x166/0x1a0 mm/shmem.c:3633
 vfs_llseek+0x9a/0xe0 fs/read_write.c:387
 ovl_llseek+0x15c/0x2c0 fs/overlayfs/file.c:277
 vfs_llseek fs/read_write.c:387 [inline]
 ksys_lseek+0xf0/0x1b0 fs/read_write.c:400
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3333b8d169
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3334911038 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007f3333da5fa0 RCX: 00007f3333b8d169
RDX: 0000000000000001 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f3333c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3333da5fa0 R15: 00007fffbffad9d8
 </TASK>