------------[ cut here ]------------
WARNING: CPU: 1 PID: 9333 at block/genhd.c:554 device_add_disk+0x8d6/0xde0 block/genhd.c:552
Modules linked in:
CPU: 1 PID: 9333 Comm: syz.2.927 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:device_add_disk+0x8d6/0xde0 block/genhd.c:554
Code: 04 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 8f 03 00 00 8b 33 48 c7 c7 a0 fc 70 8d e8 41 43 37 00 eb 05 e8 9a c6 a5 fd <0f> 0b 41 bd 01 00 00 00 44 89 e8 48 83 c4 50 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90003fbf998 EFLAGS: 00010246
RAX: ffffffff83d366f6 RBX: ffff88814c92dc00 RCX: 0000000000080000
RDX: ffffc900127e8000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 00000000000000f8 R08: ffffc90003fbf827 R09: 1ffff920007f7f04
R10: dffffc0000000000 R11: fffff520007f7f05 R12: ffff88801df42f40
R13: ffff88814c92dd50 R14: dffffc0000000000 R15: ffff88801df42f40
FS:  00007fc6e91876c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556a20808950 CR3: 0000000073e66000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 add_disk include/linux/genhd.h:200 [inline]
 dm_setup_md_queue+0x241/0x360 drivers/md/dm.c:2107
 table_load+0x4ce/0x760 drivers/md/dm-ioctl.c:1493
 ctl_ioctl drivers/md/dm-ioctl.c:2032 [inline]
 dm_ctl_ioctl+0x947/0xd00 drivers/md/dm-ioctl.c:2054
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc6eaf51b19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc6e9187028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc6eb1d8090 RCX: 00007fc6eaf51b19
RDX: 0000200000000880 RSI: 00000000c138fd09 RDI: 000000000000000c
RBP: 00007fc6eafe9b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6eb1d8128 R14: 00007fc6eb1d8090 R15: 00007ffd41e1b408
 </TASK>