==================================================================
BUG: KASAN: use-after-free in kobject_get+0x113/0x120 lib/kobject.c:631
Read of size 1 at addr ffff8881194cd03c by task syz.2.614/2347
CPU: 1 PID: 2347 Comm: syz.2.614 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
__asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:348
kobject_get+0x113/0x120 lib/kobject.c:631
get_device drivers/base/core.c:3794 [inline]
device_add+0x2f0/0xec0 drivers/base/core.c:3618
device_create_groups_vargs drivers/base/core.c:4392 [inline]
device_create+0x26c/0x300 drivers/base/core.c:4434
create_function_device+0x60/0x70 drivers/usb/gadget/configfs.c:36
create_alsa_device drivers/usb/gadget/function/f_midi.c:1306 [inline]
f_midi_alloc_inst+0x1a8/0x380 drivers/usb/gadget/function/f_midi.c:1347
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f198e39e159
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:00007f198f312028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f198e626090 RCX: 00007f198e39e159
RDX: 00000000000001ff RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007f198e43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f198e626128 R14: 00007f198e626090 R15: 00007ffcf6a9e3a8
Allocated by task 1703:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:212 [inline]
kmalloc_trace+0x40/0xb0 mm/slab_common.c:1033
kmalloc include/linux/slab.h:563 [inline]
kzalloc include/linux/slab.h:699 [inline]
device_create_groups_vargs drivers/base/core.c:4374 [inline]
device_create+0x13a/0x300 drivers/base/core.c:4434
android_device_create drivers/usb/gadget/configfs.c:1784 [inline]
gadgets_make+0x84a/0xad0 drivers/usb/gadget/configfs.c:1886
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
__kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
kvfree_call_rcu+0x8b/0x7a0 kernel/rcu/tree.c:3445
drop_sysctl_table+0x2f5/0x430 fs/proc/proc_sysctl.c:1731
unregister_sysctl_table+0x75/0x120 fs/proc/proc_sysctl.c:1769
unregister_net_sysctl_table+0x15/0x20 net/sysctl_net.c:175
neigh_sysctl_unregister+0x78/0x90 net/core/neighbour.c:3879
devinet_sysctl_unregister net/ipv4/devinet.c:2664 [inline]
inetdev_destroy net/ipv4/devinet.c:329 [inline]
inetdev_event+0x839/0x10a0 net/ipv4/devinet.c:1615
notifier_call_chain kernel/notifier.c:87 [inline]
raw_notifier_call_chain+0xa1/0x110 kernel/notifier.c:455
call_netdevice_notifiers_info net/core/dev.c:2022 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2060 [inline]
call_netdevice_notifiers net/core/dev.c:2074 [inline]
unregister_netdevice_many+0x104a/0x1910 net/core/dev.c:11005
ip6_tnl_exit_batch_net+0x3ee/0x440 net/ipv6/ip6_tunnel.c:2302
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x630/0xb10 net/core/net_namespace.c:604
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff8881194cd000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 60 bytes inside of
1024-byte region [ffff8881194cd000, ffff8881194cd400)
The buggy address belongs to the physical page:
page:ffffea0004653200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881194c9000 pfn:0x1194c8
head:ffffea0004653200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004657008 ffffea000454f008 ffff888100043080
raw: ffff8881194c9000 000000000010000e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 102, tgid 102 (udevd), ts 6418888072, free_ts 0
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3e0 mm/slub.c:2020
___slab_alloc+0x70f/0xb70 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
kmalloc_reserve net/core/skbuff.c:449 [inline]
__alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
alloc_skb include/linux/skbuff.h:1322 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1183 [inline]
netlink_sendmsg+0x635/0xbd0 net/netlink/af_netlink.c:1853
sock_sendmsg_nosec net/socket.c:716 [inline]
__sock_sendmsg net/socket.c:728 [inline]
____sys_sendmsg+0x5fb/0x9c0 net/socket.c:2509
___sys_sendmsg+0x2a2/0x360 net/socket.c:2563
__sys_sendmsg net/socket.c:2592 [inline]
__do_sys_sendmsg net/socket.c:2601 [inline]
__se_sys_sendmsg net/socket.c:2599 [inline]
__x64_sys_sendmsg+0x20d/0x2e0 net/socket.c:2599
x64_sys_call+0x171/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
page_owner free stack trace missing
Memory state around the buggy address:
ffff8881194ccf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881194ccf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881194cd000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881194cd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881194cd100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 1 PID: 2347 at lib/refcount.c:25 refcount_warn_saturate+0x104/0x1a0 lib/refcount.c:25
Modules linked in:
CPU: 1 PID: 2347 Comm: syz.2.614 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:refcount_warn_saturate+0x104/0x1a0 lib/refcount.c:25
Code: 05 01 48 c7 c7 c0 13 ca 85 e8 48 c3 d8 fe 0f 0b eb df e8 7f 3d 08 ff c6 05 ef 78 26 05 01 48 c7 c7 00 13 ca 85 e8 2c c3 d8 fe <0f> 0b eb c3 e8 63 3d 08 ff c6 05 d4 78 26 05 01 48 c7 c7 60 13 ca
RSP: 0018:ffffc900113cfa18 EFLAGS: 00010246
RAX: c17231e17ea3a500 RBX: 0000000000000002 RCX: 0000000000080000
RDX: ffffc9000b9dd000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900113cfa28 R08: ffffc900113cf607 R09: 1ffff92002279ec0
R10: dffffc0000000000 R11: fffff52002279ec1 R12: 1ffff11023922d0e
R13: dffffc0000000000 R14: 0000000000000002 R15: 0000000000000000
FS: 00007f198f3126c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c330253 CR3: 0000000143d8f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__refcount_add include/linux/refcount.h:-1 [inline]
__refcount_inc include/linux/refcount.h:250 [inline]
refcount_inc include/linux/refcount.h:267 [inline]
kref_get include/linux/kref.h:45 [inline]
kobject_get+0xfb/0x120 lib/kobject.c:635
get_device drivers/base/core.c:3794 [inline]
device_add+0x2f0/0xec0 drivers/base/core.c:3618
device_create_groups_vargs drivers/base/core.c:4392 [inline]
device_create+0x26c/0x300 drivers/base/core.c:4434
create_function_device+0x60/0x70 drivers/usb/gadget/configfs.c:36
create_alsa_device drivers/usb/gadget/function/f_midi.c:1306 [inline]
f_midi_alloc_inst+0x1a8/0x380 drivers/usb/gadget/function/f_midi.c:1347
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f198e39e159
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:00007f198f312028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f198e626090 RCX: 00007f198e39e159
RDX: 00000000000001ff RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007f198e43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f198e626128 R14: 00007f198e626090 R15: 00007ffcf6a9e3a8
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
refcount_t: saturated; leaking memory.
WARNING: CPU: 1 PID: 2347 at lib/refcount.c:22 refcount_warn_saturate+0x158/0x1a0 lib/refcount.c:22
Modules linked in:
CPU: 1 PID: 2347 Comm: syz.2.614 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:refcount_warn_saturate+0x158/0x1a0 lib/refcount.c:22
Code: 05 01 48 c7 c7 a0 12 ca 85 e8 f4 c2 d8 fe 0f 0b eb 8b e8 2b 3d 08 ff c6 05 9a 78 26 05 01 48 c7 c7 a0 12 ca 85 e8 d8 c2 d8 fe <0f> 0b e9 6c ff ff ff e8 0c 3d 08 ff c6 05 7f 78 26 05 01 48 c7 c7
RSP: 0018:ffffc900113cf8d8 EFLAGS: 00010246
RAX: c17231e17ea3a500 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9000b9dd000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900113cf8e8 R08: ffffc900113cf5e7 R09: 1ffff92002279ebc
R10: dffffc0000000000 R11: fffff52002279ebd R12: dffffc0000000000
R13: ffff88811c916818 R14: 0000000000000001 R15: 00000000c0000000
FS: 00007f198f3126c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c330253 CR3: 0000000143d8f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__refcount_add include/linux/refcount.h:-1 [inline]
__refcount_inc include/linux/refcount.h:250 [inline]
refcount_inc include/linux/refcount.h:267 [inline]
kref_get include/linux/kref.h:45 [inline]
kobject_get lib/kobject.c:635 [inline]
kobject_add_internal+0xa81/0xc20 lib/kobject.c:216
kobject_add_varg lib/kobject.c:366 [inline]
kobject_add+0x165/0x230 lib/kobject.c:418
device_add+0x398/0xec0 drivers/base/core.c:3633
device_create_groups_vargs drivers/base/core.c:4392 [inline]
device_create+0x26c/0x300 drivers/base/core.c:4434
create_function_device+0x60/0x70 drivers/usb/gadget/configfs.c:36
create_alsa_device drivers/usb/gadget/function/f_midi.c:1306 [inline]
f_midi_alloc_inst+0x1a8/0x380 drivers/usb/gadget/function/f_midi.c:1347
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f198e39e159
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:00007f198f312028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f198e626090 RCX: 00007f198e39e159
RDX: 00000000000001ff RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007f198e43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f198e626128 R14: 00007f198e626090 R15: 00007ffcf6a9e3a8
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 2347 at lib/refcount.c:28 refcount_warn_saturate+0x120/0x1a0 lib/refcount.c:28
Modules linked in:
CPU: 1 PID: 2347 Comm: syz.2.614 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:refcount_warn_saturate+0x120/0x1a0 lib/refcount.c:28
Code: 05 01 48 c7 c7 00 13 ca 85 e8 2c c3 d8 fe 0f 0b eb c3 e8 63 3d 08 ff c6 05 d4 78 26 05 01 48 c7 c7 60 13 ca 85 e8 10 c3 d8 fe <0f> 0b eb a7 e8 47 3d 08 ff c6 05 b5 78 26 05 01 48 c7 c7 a0 12 ca
RSP: 0018:ffffc900113cf8a0 EFLAGS: 00010246
RAX: c17231e17ea3a500 RBX: 0000000000000003 RCX: 0000000000080000
RDX: ffffc9000b9dd000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900113cf8b0 R08: ffffc900113cf5a7 R09: 1ffff92002279eb4
R10: dffffc0000000000 R11: fffff52002279eb5 R12: 00000000c0000000
R13: ffff8881194cd03c R14: 0000000000000003 R15: ffff8881194cd038
FS: 00007f198f3126c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c330253 CR3: 0000000143d8f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__refcount_sub_and_test include/linux/refcount.h:283 [inline]
__refcount_dec_and_test include/linux/refcount.h:315 [inline]
refcount_dec_and_test include/linux/refcount.h:333 [inline]
kref_put include/linux/kref.h:64 [inline]
kobject_put+0x244/0x280 lib/kobject.c:729
kobject_add_internal+0x9a2/0xc20 lib/kobject.c:234
kobject_add_varg lib/kobject.c:366 [inline]
kobject_add+0x165/0x230 lib/kobject.c:418
device_add+0x398/0xec0 drivers/base/core.c:3633
device_create_groups_vargs drivers/base/core.c:4392 [inline]
device_create+0x26c/0x300 drivers/base/core.c:4434
create_function_device+0x60/0x70 drivers/usb/gadget/configfs.c:36
create_alsa_device drivers/usb/gadget/function/f_midi.c:1306 [inline]
f_midi_alloc_inst+0x1a8/0x380 drivers/usb/gadget/function/f_midi.c:1347
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f198e39e159
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:00007f198f312028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f198e626090 RCX: 00007f198e39e159
RDX: 00000000000001ff RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007f198e43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f198e626128 R14: 00007f198e626090 R15: 00007ffcf6a9e3a8
---[ end trace 0000000000000000 ]---
kobject_add_internal failed for f_midi (error: -2 parent: n)