bridge0: port 1(bridge_slave_0) entered disabled state
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 0 PID: 7557 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4850 [inline]
WARNING: CPU: 0 PID: 7557 at kernel/locking/lockdep.c:232 __lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176
Modules linked in:
CPU: 0 UID: 0 PID: 7557 Comm: kworker/u8:12 Tainted: G W 6.13.0-rc6-syzkaller-g577490b6abb9 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : check_wait_context kernel/locking/lockdep.c:4850 [inline]
pc : __lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176
lr : hlock_class kernel/locking/lockdep.c:232 [inline]
lr : check_wait_context kernel/locking/lockdep.c:4850 [inline]
lr : __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176
sp : ffff80009eff7040
x29: ffff80009eff7300 x28: ffff0000d7a60000 x27: ffff0000d7a60b40
x26: 1fffe0001af4c168 x25: 0000000000000000 x24: 0000000000000001
x23: ffff0000d7a60a78 x22: ffff0000d7a60b20 x21: ffff0000d7a60b44
x20: 00000000000015c5 x19: ffff8000931c7a78 x18: ffff80009eff6738
x17: 0000000000000000 x16: ffff8000803b4180 x15: 0000000000000001
x14: 1ffff00011f49f9c x13: dfff800000000000 x12: 0000000000000000
x11: 0000000000000003 x10: 0000000000ff0100 x9 : 0c98272ec0943100
x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff8000804a69fc
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008047cc34
x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000
Call trace:
check_wait_context kernel/locking/lockdep.c:4850 [inline] (P)
__lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176 (P)
lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
down+0x3c/0xe8 kernel/locking/semaphore.c:59
netpoll_poll_disable+0xe8/0x100 net/core/netpoll.c:222
__dev_close_many+0x104/0x3c8 net/core/dev.c:1532
dev_close_many+0x1e0/0x474 net/core/dev.c:1585
unregister_netdevice_many_notify+0x454/0x1c6c net/core/dev.c:11502
unregister_netdevice_many+0x28/0x38 net/core/dev.c:11592
cleanup_net+0x5c8/0xa34 net/core/net_namespace.c:643
process_one_work+0x7a8/0x15cc kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x97c/0xeec kernel/workqueue.c:3391
kthread+0x288/0x310 kernel/kthread.c:389
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 489272
hardirqs last enabled at (489271): [<ffff80008030e224>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:394
hardirqs last disabled at (489272): [<ffff80008b6c638c>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (489272): [<ffff80008b6c638c>] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:162
softirqs last enabled at (489270): [<ffff8000861788ac>] pppoe_flush_dev drivers/net/ppp/pppoe.c:327 [inline]
softirqs last enabled at (489270): [<ffff8000861788ac>] pppoe_device_event+0x464/0x4a0 drivers/net/ppp/pppoe.c:346
softirqs last disabled at (489268): [<ffff800086178530>] pppoe_flush_dev drivers/net/ppp/pppoe.c:279 [inline]
softirqs last disabled at (489268): [<ffff800086178530>] pppoe_device_event+0xe8/0x4a0 drivers/net/ppp/pppoe.c:346
---[ end trace 0000000000000000 ]---
Unable to handle kernel paging request at virtual address dfff800000000018
KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]
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, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000018] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7557 Comm: kworker/u8:12 Tainted: G W 6.13.0-rc6-syzkaller-g577490b6abb9 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : check_wait_context kernel/locking/lockdep.c:4850 [inline]
pc : __lock_acquire+0x574/0x7904 kernel/locking/lockdep.c:5176
lr : hlock_class kernel/locking/lockdep.c:232 [inline]
lr : check_wait_context kernel/locking/lockdep.c:4850 [inline]
lr : __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176
sp : ffff80009eff7040
x29: ffff80009eff7300 x28: ffff0000d7a60000 x27: ffff0000d7a60b40
x26: 1fffe0001af4c168 x25: 0000000000000000 x24: 0000000000000001
x23: ffff0000d7a60a78 x22: ffff0000d7a60b20 x21: 00000000000000c4
x20: 00000000000015c5 x19: ffff8000931c7a78 x18: ffff80009eff6738
x17: 0000000000000000
x16: ffff8000803b4180
x15: 0000000000000001
x14: 1ffff00011f49f9c x13: dfff800000000000 x12: 0000000000000000
x11: 0000000000000003 x10: 0000000000ff0100 x9 : 0c98272ec0943100
x8 : 0000000000000018
x7 : 4e5241575f534b43
x6 : ffff8000804a69fc
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008047cc34
x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000
Call trace:
check_wait_context kernel/locking/lockdep.c:4850 [inline] (P)
__lock_acquire+0x574/0x7904 kernel/locking/lockdep.c:5176 (P)
lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
down+0x3c/0xe8 kernel/locking/semaphore.c:59
netpoll_poll_disable+0xe8/0x100 net/core/netpoll.c:222
__dev_close_many+0x104/0x3c8 net/core/dev.c:1532
dev_close_many+0x1e0/0x474 net/core/dev.c:1585
unregister_netdevice_many_notify+0x454/0x1c6c net/core/dev.c:11502
unregister_netdevice_many+0x28/0x38 net/core/dev.c:11592
cleanup_net+0x5c8/0xa34 net/core/net_namespace.c:643
process_one_work+0x7a8/0x15cc kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x97c/0xeec kernel/workqueue.c:3391
kthread+0x288/0x310 kernel/kthread.c:389
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
Code: 34000fa8 aa1f03e8 91031115 d343fea8 (38ed6908)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 34000fa8 cbz w8, 0x1f4
4: aa1f03e8 mov x8, xzr
8: 91031115 add x21, x8, #0xc4
c: d343fea8 lsr x8, x21, #3
* 10: 38ed6908 ldrsb w8, [x8, x13] <-- trapping instruction