------------[ cut here ]------------
WARNING: CPU: 0 PID: 11187 at block/genhd.c:586 del_gendisk+0x6fb/0x770
Modules linked in:
CPU: 0 PID: 11187 Comm: syz.2.1943 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:del_gendisk+0x6fb/0x770 block/genhd.c:586
Code: 00 00 4c 89 f6 e8 75 88 fa ff 4c 89 f7 be 01 00 00 00 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8a 14 fd ff e8 45 d7 8d fd <0f> 0b 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 89 e9 80 e1 07
RSP: 0018:ffffc9000138fdf0 EFLAGS: 00010283
RAX: ffffffff83f29c5b RBX: 0000000000000240 RCX: 0000000000080000
RDX: ffffc9000dbe2000 RSI: 000000000000040c RDI: 000000000000040d
RBP: 0000000000000000 R08: ffffffff83f29678 R09: fffff52000271fb9
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100c2c7c10
R13: ffff88806163e000 R14: ffff888023bc63c0 R15: ffff88806163e080
FS:  00007f91bf0ab6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb3d4f6178 CR3: 0000000022c71000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 loop_remove drivers/block/loop.c:2452 [inline]
 loop_control_remove drivers/block/loop.c:2509 [inline]
 loop_control_ioctl+0x552/0x700 drivers/block/loop.c:2547
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f91c1254819
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:00007f91bf0ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f91c140c080 RCX: 00007f91c1254819
RDX: 0000000007000000 RSI: 0000000000004c81 RDI: 000000000000000a
RBP: 00007f91c12c775e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f91c140c080 R15: 00007ffd7ce9f758
 </TASK>