------------[ cut here ]------------
sysfs group 'byte_queue_limits' not found for kobject 'tx-0'
WARNING: CPU: 0 PID: 4508 at fs/sysfs/group.c:281 sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
Modules linked in:
CPU: 0 PID: 4508 Comm: kbnepd bnep0 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
lr : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
sp : ffff800020817830
x29: ffff800020817830 x28: 1fffe00018f1fcbb x27: 0000000000000000
x26: 0000000000000000 x25: 1fffe00018f1fc88 x24: 1ffff000026d8f14
x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000d467d418
x20: ffff0000e9ca8bc8 x19: ffff8000136c7f80 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b4c108 x15: 00000000ffffffff
x14: ffff0000c9039b40 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 41e1123f63c1b800
x8 : 41e1123f63c1b800 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020816f98 x4 : ffff800014c405e0 x3 : ffff800008555e80
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003c
Call trace:
sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
netdev_queue_update_kobjects+0x388/0x404 net/core/net-sysfs.c:1724
remove_queue_kobjects net/core/net-sysfs.c:1823 [inline]
netdev_unregister_kobject+0x100/0x204 net/core/net-sysfs.c:1976
unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11129
unregister_netdevice_queue net/core/dev.c:11035 [inline]
unregister_netdevice include/linux/netdevice.h:3012 [inline]
unregister_netdev+0x178/0x1f0 net/core/dev.c:11161
bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 7796
hardirqs last enabled at (7795): [<ffff80000832c128>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (7796): [<ffff800011b47794>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last enabled at (7724): [<ffff80000ffba2fc>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last enabled at (7724): [<ffff80000ffba2fc>] netif_addr_unlock_bh include/linux/netdevice.h:4617 [inline]
softirqs last enabled at (7724): [<ffff80000ffba2fc>] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1001
softirqs last disabled at (7722): [<ffff80000ffba914>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace 8196d61f8d1f79d8 ]---
==================================================================
BUG: KASAN: use-after-free in device_for_each_child+0xa8/0x174 drivers/base/core.c:3728
Read of size 8 at addr ffff0000daa11388 by task kbnepd bnep0/4508
CPU: 0 PID: 4508 Comm: kbnepd bnep0 Tainted: G W 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x174/0x1e4 mm/kasan/report.c:451
__asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309
device_for_each_child+0xa8/0x174 drivers/base/core.c:3728
pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246
netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978
unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11129
unregister_netdevice_queue net/core/dev.c:11035 [inline]
unregister_netdevice include/linux/netdevice.h:3012 [inline]
unregister_netdev+0x178/0x1f0 net/core/dev.c:11161
bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Allocated by task 4040:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
__kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x29c/0x4c8 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
kzalloc include/linux/slab.h:721 [inline]
hci_alloc_dev_priv+0x30/0x18b0 net/bluetooth/hci_core.c:3775
hci_alloc_dev include/net/bluetooth/hci_core.h:1242 [inline]
__vhci_create_device drivers/bluetooth/hci_vhci.c:102 [inline]
vhci_create_device+0xf8/0x568 drivers/bluetooth/hci_vhci.c:153
vhci_get_user drivers/bluetooth/hci_vhci.c:210 [inline]
vhci_write+0x318/0x3b8 drivers/bluetooth/hci_vhci.c:290
call_write_iter include/linux/fs.h:2174 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0x884/0xb44 fs/read_write.c:594
ksys_write+0x15c/0x26c fs/read_write.c:647
__do_sys_write fs/read_write.c:659 [inline]
__se_sys_write fs/read_write.c:656 [inline]
__arm64_sys_write+0x7c/0x90 fs/read_write.c:656
__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
Freed by task 4040:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
__kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kfree+0x178/0x410 mm/slub.c:4559
hci_release_dev+0x1004/0x116c net/bluetooth/hci_core.c:4096
bt_host_release+0x70/0x88 net/bluetooth/hci_sysfs.c:92
device_release+0x8c/0x1ac
kobject_cleanup lib/kobject.c:713 [inline]
kobject_release lib/kobject.c:744 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x2c4/0x438 lib/kobject.c:761
put_device+0x28/0x40 drivers/base/core.c:3520
hci_free_dev+0x24/0x34 net/bluetooth/hci_core.c:3895
vhci_release+0x7c/0xc4 drivers/bluetooth/hci_vhci.c:346
__fput+0x1c4/0x800 fs/file_table.c:280
____fput+0x20/0x30 fs/file_table.c:308
task_work_run+0x130/0x1e4 kernel/task_work.c:188
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x670/0x20bc kernel/exit.c:874
do_group_exit+0x110/0x268 kernel/exit.c:996
get_signal+0x634/0x1550 kernel/signal.c:2900
do_signal arch/arm64/kernel/signal.c:890 [inline]
do_notify_resume+0x3d0/0x32b8 arch/arm64/kernel/signal.c:943
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
insert_work+0x64/0x394 kernel/workqueue.c:1366
__queue_work+0xb84/0x114c kernel/workqueue.c:1532
queue_work_on+0xc4/0x17c kernel/workqueue.c:1559
queue_work include/linux/workqueue.h:512 [inline]
hci_send_acl+0x7a8/0xaa4 net/bluetooth/hci_core.c:4439
l2cap_do_send+0x238/0x350
l2cap_chan_send+0x190c/0x1e5c
l2cap_sock_sendmsg+0x184/0x2a8 net/bluetooth/l2cap_sock.c:1173
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_sendmsg net/socket.c:739 [inline]
kernel_sendmsg+0x1c8/0x2a0 net/socket.c:763
bnep_tx_frame net/bluetooth/bnep/core.c:466 [inline]
bnep_session+0x1e38/0x2424 net/bluetooth/bnep/core.c:509
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Second to last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
insert_work+0x64/0x394 kernel/workqueue.c:1366
__queue_work+0xb84/0x114c kernel/workqueue.c:1532
queue_work_on+0xc4/0x17c kernel/workqueue.c:1559
queue_work include/linux/workqueue.h:512 [inline]
hci_send_acl+0x7a8/0xaa4 net/bluetooth/hci_core.c:4439
l2cap_do_send+0x238/0x350
l2cap_chan_send+0x190c/0x1e5c
l2cap_sock_sendmsg+0x184/0x2a8 net/bluetooth/l2cap_sock.c:1173
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_sendmsg net/socket.c:739 [inline]
kernel_sendmsg+0x1c8/0x2a0 net/socket.c:763
bnep_tx_frame net/bluetooth/bnep/core.c:466 [inline]
bnep_session+0x1e38/0x2424 net/bluetooth/bnep/core.c:509
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
The buggy address belongs to the object at ffff0000daa10000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 5000 bytes inside of
8192-byte region [ffff0000daa10000, ffff0000daa12000)
The buggy address belongs to the page:
page:000000006fec4c70 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11aa10
head:000000006fec4c70 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002c00
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000daa11280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000daa11300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000daa11380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000daa11400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000daa11480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:130:9
index 12970 is out of range for type 'unsigned long[8]'
CPU: 0 PID: 4508 Comm: kbnepd bnep0 Tainted: G B W 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282
decode_tail kernel/locking/qspinlock.c:130 [inline]
queued_spin_lock_slowpath+0x854/0x938 kernel/locking/qspinlock.c:468
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x334/0x35c kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
_raw_spin_lock_irqsave+0xcc/0x14c kernel/locking/spinlock.c:162
klist_next+0x8c/0x2f4 lib/klist.c:382
next_device drivers/base/core.c:3653 [inline]
device_for_each_child+0xc0/0x174 drivers/base/core.c:3732
pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246
netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978
unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11129
unregister_netdevice_queue net/core/dev.c:11035 [inline]
unregister_netdevice include/linux/netdevice.h:3012 [inline]
unregister_netdev+0x178/0x1f0 net/core/dev.c:11161
bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
================================================================================
Unable to handle kernel paging request at virtual address ffff700302958ee2
Mem abort info:
ESR = 0x0000000096000005
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x05: level 1 translation fault
Data abort info:
ISV = 0, ISS = 0x00000005
CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ae184000
[ffff700302958ee2] pgd=000000023ec49003, p4d=000000023ec49003, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4508 Comm: kbnepd bnep0 Tainted: G B W 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x354/0x938 kernel/locking/qspinlock.c:471
lr : decode_tail kernel/locking/qspinlock.c:130 [inline]
lr : queued_spin_lock_slowpath+0x854/0x938 kernel/locking/qspinlock.c:468
sp : ffff800020817580
x29: ffff800020817620 x28: 1ffff00004102ebc x27: 0000000000000000
x26: dfff800000000000 x25: ffff700004102eb4 x24: 0000000000040000
x23: ffff801814ac7710 x22: ffff0001b418b708 x21: ffff0001b418b700
x20: ffff800014ac7710 x19: ffff0000d34e2800 x18: 0000000000000002
x17: 0000000000000000 x16: ffff8000083364dc x15: 00000000ffffffff
x14: ffff0000c9039b40 x13: 0000000000000001 x12: ffff700002e38164
x11: 0000000000000001 x10: ffff800014ac7700 x9 : 0000000000000001
x8 : 1ffff00302958ee2 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020816c78 x4 : ffff800014c405e0 x3 : ffff80000819c3ec
x2 : 0000000000000001 x1 : 0000000000000003 x0 : 00000000ffffffff
Call trace:
queued_spin_lock_slowpath+0x354/0x938 kernel/locking/qspinlock.c:471
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x334/0x35c kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
_raw_spin_lock_irqsave+0xcc/0x14c kernel/locking/spinlock.c:162
klist_next+0x8c/0x2f4 lib/klist.c:382
next_device drivers/base/core.c:3653 [inline]
device_for_each_child+0xc0/0x174 drivers/base/core.c:3732
pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246
netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978
unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11129
unregister_netdevice_queue net/core/dev.c:11035 [inline]
unregister_netdevice include/linux/netdevice.h:3012 [inline]
unregister_netdev+0x178/0x1f0 net/core/dev.c:11161
bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Code: 941744c0 f94002e8 8b140117 d343fee8 (387a6908)
---[ end trace 8196d61f8d1f79d9 ]---
----------------
Code disassembly (best guess):
0: 941744c0 bl 0x5d1300
4: f94002e8 ldr x8, [x23]
8: 8b140117 add x23, x8, x20
c: d343fee8 lsr x8, x23, #3
* 10: 387a6908 ldrb w8, [x8, x26] <-- trapping instruction