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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: drivers/usb/gadget/udc/core.c:125 at usb_ep_enable+0x148/0x480 drivers/usb/gadget/udc/core.c:124, CPU#0: kworker/u8:20/9745
Modules linked in:
CPU: 0 UID: 0 PID: 9745 Comm: kworker/u8:20 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: netns cleanup_net
RIP: 0010:usb_ep_enable+0x1bc/0x480 drivers/usb/gadget/udc/core.c:124
Code: 3a b0 74 fa 49 83 3f 00 48 c7 c0 40 42 d3 8c 49 c7 c0 60 42 d3 8c 4c 0f 44 c0 4c 89 f7 48 c7 c6 c5 b9 6a 8e 44 89 ea 4c 89 e1 <67> 48 0f b9 3a bd ea ff ff ff 0f 1f 44 00 00 e8 20 a8 04 fa 65 8b
RSP: 0018:ffffc90000007910 EFLAGS: 00010086
RAX: ffffffff8cd34240 RBX: ffff888026a680e0 RCX: ffffffff8cd36060
RDX: 0000000000000081 RSI: ffffffff8e6ab9c5 RDI: ffffffff90882d50
RBP: dffffc0000000000 R08: ffffffff8cd34260 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000100 R12: ffffffff8cd36060
R13: 0000000000000081 R14: ffffffff90882d50 R15: ffff888026a680f8
FS: 0000000000000000(0000) GS:ffff888124cd1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2cbbee CR3: 00000000483cd000 CR4: 0000000000350ef0
Call Trace:
hidg_set_alt+0x12a/0xa60 drivers/usb/gadget/function/f_hid.c:1042
set_config+0x749/0x1160 drivers/usb/gadget/composite.c:1018
composite_setup+0x1de7/0x3480 drivers/usb/gadget/composite.c:1901
configfs_composite_setup+0xc7/0x100 drivers/usb/gadget/configfs.c:1877
dummy_timer+0x2f43/0x4cf0 drivers/usb/gadget/udc/dummy_hcd.c:1951
__run_hrtimer kernel/time/hrtimer.c:2074 [inline]
__hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2131
hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2148
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x413/0xc60 kernel/sched/core.c:5377
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 37 07 52 0a e8 52 1a 3a 00 fb 4c 8b 65 c8 <49> 8d bc 24 10 17 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90003fdf1e0 EFLAGS: 00000202
RAX: 00000000000b0613 RBX: ffff8880b863c8e0 RCX: 8000000000000001
RDX: 0000000000000006 RSI: ffffffff8e41399c RDI: ffffffff8c6da080
RBP: ffffc90003fdf230 R08: ffffffff907a3f7f R09: 1ffffffff20f47ef
R10: dffffc0000000000 R11: fffffbfff20f47f0 R12: ffff88802abeddc0
R13: ffff8880b863c8a8 R14: dffffc0000000000 R15: 1ffff110170c791c
context_switch kernel/sched/core.c:5529 [inline]
__schedule+0x17e3/0x58f0 kernel/sched/core.c:7277
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7456
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
_raw_spin_unlock_irqrestore+0x76/0x80 kernel/locking/spinlock.c:221
kthread_queue_work+0x111/0x180 kernel/kthread.c:1210
synchronize_rcu_expedited_queue_work kernel/rcu/tree_exp.h:498 [inline]
synchronize_rcu_expedited+0x48e/0x770 kernel/rcu/tree_exp.h:976
synchronize_net net/core/dev.c:12342 [inline]
unregister_netdevice_many_notify+0x10be/0x2140 net/core/dev.c:12498
unregister_netdevice_many net/core/dev.c:12589 [inline]
default_device_exit_batch+0x6d4/0x760 net/core/dev.c:13289
ops_exit_list net/core/net_namespace.c:206 [inline]
ops_undo_list+0x4b4/0x8d0 net/core/net_namespace.c:253
cleanup_net+0x572/0x810 net/core/net_namespace.c:706
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
----------------
Code disassembly (best guess), 1 bytes skipped:
0: b0 74 mov $0x74,%al
2: fa cli
3: 49 83 3f 00 cmpq $0x0,(%r15)
7: 48 c7 c0 40 42 d3 8c mov $0xffffffff8cd34240,%rax
e: 49 c7 c0 60 42 d3 8c mov $0xffffffff8cd34260,%r8
15: 4c 0f 44 c0 cmove %rax,%r8
19: 4c 89 f7 mov %r14,%rdi
1c: 48 c7 c6 c5 b9 6a 8e mov $0xffffffff8e6ab9c5,%rsi
23: 44 89 ea mov %r13d,%edx
26: 4c 89 e1 mov %r12,%rcx
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: bd ea ff ff ff mov $0xffffffea,%ebp
33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
38: e8 20 a8 04 fa call 0xfa04a85d
3d: 65 gs
3e: 8b .byte 0x8b