el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
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: 1 PID: 5855 at block/genhd.c:543 device_add_disk+0x5d8/0xacc
Modules linked in:
CPU: 1 PID: 5855 Comm: syz-executor350 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_add_disk+0x5d8/0xacc
lr : device_add_disk+0x5d4/0xacc block/genhd.c:541
sp : ffff800024427350
x29: ffff8000244273b0 x28: dfff800000000000 x27: ffff0000e18f3ac0
x26: ffff0000e18f3fbc x25: 00000000ffffffef x24: ffff0000d13e24a0
x23: 1fffe0001a27c494 x22: 0000000000000001 x21: ffff0000d13e2490
x20: 0000000000000009 x19: ffff0000d13e2400 x18: 1fffe00036832d8e
x17: 1fffe00036832d8e x16: ffff8000082ec940 x15: ffff8000089765ec
x14: ffff800008975f20 x13: ffff800011b4a01c x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000d10eb680
x8 : ffff80000a8dec58 x7 : 0000000000000000 x6 : ffff80000805d4a8
x5 : ffff0000c23bdfd8 x4 : 0000000000000000 x3 : ffff80000abf8110
x2 : 0000000000000001 x1 : 0000000000000009 x0 : 0000000000000103
Call trace:
 device_add_disk+0x5d8/0xacc
 add_disk include/linux/genhd.h:200 [inline]
 md_alloc+0x6bc/0xa80 drivers/md/md.c:5782
 md_probe+0x78/0x94 drivers/md/md.c:5812
 blk_request_module+0x184/0x1a8 block/genhd.c:680
 blkdev_get_no_open+0x4c/0x178 block/bdev.c:740
 blkdev_get_by_dev+0x8c/0x89c block/bdev.c:804
 blkdev_open+0x10c/0x274 block/fops.c:463
 do_dentry_open+0x780/0xed8 fs/open.c:826
 vfs_open+0x7c/0x90 fs/open.c:956
 do_open fs/namei.c:3608 [inline]
 path_openat+0x1ea0/0x26cc fs/namei.c:3742
 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769
 do_sys_openat2+0x128/0x3e0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 986
hardirqs last  enabled at (985): [<ffff8000088d641c>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (986): [<ffff800011b49ab0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (952): [<ffff8000081b6920>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (952): [<ffff8000081b6920>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (929): [<ffff8000081b6fb8>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (929): [<ffff8000081b6fb8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (929): [<ffff8000081b6fb8>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (929): [<ffff8000081b6fb8>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace ab4392f939eb474e ]---
kobject_add_internal failed for md (error: -2 parent: md2)