------------[ cut here ]------------
kobject: '(null)' (000000004484c754): is not initialized, yet kobject_get() is being called.
WARNING: CPU: 0 PID: 4927 at lib/kobject.c:634 kobject_get lib/kobject.c:632 [inline]
WARNING: CPU: 0 PID: 4927 at lib/kobject.c:634 kobject_add_internal+0xe8/0xb18 lib/kobject.c:216
Modules linked in:
CPU: 0 PID: 4927 Comm: syz.4.110 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : kobject_get lib/kobject.c:632 [inline]
pc : kobject_add_internal+0xe8/0xb18 lib/kobject.c:216
lr : kobject_get lib/kobject.c:632 [inline]
lr : kobject_add_internal+0xe8/0xb18 lib/kobject.c:216
sp : ffff800022867610
x29: ffff800022867620 x28: 1fffe0001b98d406 x27: ffff0000f4b9c018
x26: 1fffe0001b98d412 x25: ffff0000dcc6a090 x24: dfff800000000000
x23: dfff800000000000 x22: ffff70000450cedc x21: 0000000000000000
x20: ffff0000f4b9c060 x19: ffff0000dcc6a078 x18: 0000000000000000
x17: 6f6b20746579202c x16: ffff800011ba16d0 x15: 696e6920746f6e20
x14: 0000000000000001 x13: 1fffe00033c217a3 x12: 0000000000080000
x11: 0000000000006b32 x10: ffff80002ef1e000 x9 : 0228c52378dfe100
x8 : 0228c52378dfe100 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800022867098 x4 : ffff8000164c4fa0 x3 : ffff800008545104
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 kobject_get lib/kobject.c:632 [inline]
 kobject_add_internal+0xe8/0xb18 lib/kobject.c:216
 kobject_add_varg lib/kobject.c:366 [inline]
 kobject_add+0x144/0x20c lib/kobject.c:418
 bind_rdev_to_array+0x858/0xddc drivers/md/md.c:2494
 md_add_new_disk+0xab8/0x1484 drivers/md/md.c:6998
 md_ioctl+0x2158/0x25cc drivers/md/md.c:7807
 blkdev_ioctl+0x654/0xb74 block/ioctl.c:626
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
irq event stamp: 242
hardirqs last  enabled at (241): [<ffff800008316468>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261
hardirqs last disabled at (242): [<ffff800011b9d7f8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (190): [<ffff800008031244>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (188): [<ffff800008031210>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
md: pers->run() failed ...