RBP: 00007f614bcefd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f614bed3128 R14: 00007f614bed3090 R15: 00007ffda8c53088
</TASK>
kobject_add_internal failed for md2 with -EEXIST, don't try to register things with the same name in the same directory.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5269 at block/genhd.c:547 device_add_disk+0x76b/0xd40 block/genhd.c:545
Modules linked in:
CPU: 0 PID: 5269 Comm: syz.4.311 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:device_add_disk+0x76b/0xd40 block/genhd.c:547
Code: b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b0 04 00 00 8b 33 48 c7 c7 a0 e4 8f 8c e8 bc 56 37 00 eb 05 e8 b5 45 ab fd <0f> 0b 41 bf 01 00 00 00 44 89 f8 48 83 c4 70 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000340f690 EFLAGS: 00010293
RAX: ffffffff83ce033b RBX: ffff888059505800 RCX: ffff88807cc1d940
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000103
RBP: 0000000000000009 R08: ffff88805bed807b R09: 1ffff1100b7db00f
R10: dffffc0000000000 R11: ffffed100b7db010 R12: ffff88805bed8040
R13: 1ffff1100b2a0b00 R14: dffffc0000000000 R15: 00000000ffffffef
FS: 00007f614b29a6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6879be3540 CR3: 0000000059e78000 CR4: 00000000003506f0
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+0x809/0xc00 drivers/md/md.c:5782
blk_probe_dev block/genhd.c:685 [inline]
blk_request_module+0x26e/0x290 block/genhd.c:-1
blkdev_get_no_open+0x38/0x1d0 block/bdev.c:740
blkdev_get_by_dev+0x77/0xa60 block/bdev.c:807
blkdev_open+0x12d/0x2c0 block/fops.c:466
do_dentry_open+0x7ff/0xf80 fs/open.c:826
do_open fs/namei.c:3616 [inline]
path_openat+0x26f5/0x2fa0 fs/namei.c:3750
do_filp_open+0x1e2/0x410 fs/namei.c:3777
do_sys_openat2+0x150/0x4b0 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: 0033:0x7f614bc59e59
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:00007f614b29a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f614bed3090 RCX: 00007f614bc59e59
RDX: 0000000000000000 RSI: 0000200000000a80 RDI: ffffffffffffff9c
RBP: 00007f614bcefd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f614bed3128 R14: 00007f614bed3090 R15: 00007ffda8c53088
</TASK>