loop0: detected capacity change from 0 to 8
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5312 at fs/file.c:1202 file_seek_cur_needs_f_lock+0x121/0x150 fs/file.c:1201
Modules linked in:
CPU: 0 UID: 0 PID: 5312 Comm: syz.0.0 Not tainted 6.15.0-syzkaller-01599-gddddf9d64f73 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:file_seek_cur_needs_f_lock+0x121/0x150 fs/file.c:1201
Code: 23 e8 f3 04 85 ff eb 05 e8 ec 04 85 ff b0 01 5b 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d9 04 85 ff 31 c0 eb eb e8 d0 04 85 ff 90 <0f> 0b 90 eb de 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fd fe ff ff
RSP: 0018:ffffc9000d56fe60 EFLAGS: 00010283
RAX: ffffffff823a2590 RBX: ffff888011f4bcd0 RCX: 0000000000100000
RDX: ffffc9000e162000 RSI: 000000000000000d RDI: 000000000000000e
RBP: 0000000000000000 R08: ffff888011f4bcd7 R09: 1ffff110023e979a
R10: dffffc0000000000 R11: ffffed10023e979b R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: bfffffffffffffff
FS:  00007f707eb796c0(0000) GS:ffff88808d6b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7071c3f000 CR3: 0000000042683000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_file_llseek_size+0xaa/0x4b0 fs/read_write.c:178
 vfs_llseek fs/read_write.c:389 [inline]
 ksys_lseek fs/read_write.c:402 [inline]
 __do_sys_lseek fs/read_write.c:412 [inline]
 __se_sys_lseek fs/read_write.c:410 [inline]
 __x64_sys_lseek+0x14f/0x1e0 fs/read_write.c:410
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f707dd8e969
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:00007f707eb79038 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007f707dfb5fa0 RCX: 00007f707dd8e969
RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000007
RBP: 00007f707de10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f707dfb5fa0 R15: 00007ffd78d62688
 </TASK>