R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faedb6b3038 R14: 00007faedb6b2fa0 R15: 00007fff58326098
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4323 at block/genhd.c:554 device_add_disk+0x8d6/0xde0 block/genhd.c:552
Modules linked in:
CPU: 1 PID: 4323 Comm: syz.1.7 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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 00 f4 70 8d e8 b1 3d 37 00 eb 05 e8 ea 04 a6 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:ffffc90002fef6f8 EFLAGS: 00010287
RAX: ffffffff83d31e76 RBX: ffff88805d1ab800 RCX: 0000000000080000
RDX: ffffc90003d81000 RSI: 0000000000076c16 RDI: 0000000000076c17
RBP: 0000000000000009 R08: ffffc90002fef587 R09: 1ffff920005fdeb0
R10: dffffc0000000000 R11: fffff520005fdeb1 R12: ffff888017c60c00
R13: ffff88805d1ab950 R14: dffffc0000000000 R15: ffff888017c60c00
FS:  00007faed96836c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c37822c CR3: 000000005c6bd000 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]
 md_alloc+0x80e/0xc10 drivers/md/md.c:5789
 blk_probe_dev block/genhd.c:692 [inline]
 blk_request_module+0x26e/0x290 block/genhd.c:-1
 blkdev_get_no_open+0x38/0x1d0 block/bdev.c:736
 blkdev_get_by_dev+0x77/0xa50 block/bdev.c:803
 blkdev_open+0x128/0x2c0 block/fops.c:466
 do_dentry_open+0x7f7/0xf90 fs/open.c:826
 do_open fs/namei.c:3659 [inline]
 path_openat+0x2718/0x2fb0 fs/namei.c:3793
 do_filp_open+0x1df/0x400 fs/namei.c:3820
 do_sys_openat2+0x14b/0x500 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 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: 0033:0x7faedb42c559
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:00007faed9683028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007faedb6b2fa0 RCX: 00007faedb42c559
RDX: 0000000000000002 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007faedb4c3b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faedb6b3038 R14: 00007faedb6b2fa0 R15: 00007fff58326098
 </TASK>