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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 7 at drivers/usb/gadget/udc/core.c:108 usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: rcu_gp process_srcu
RIP: 0010:usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Code: 49 8b 0e 48 c7 c0 80 27 d5 8a 49 c7 c0 a0 27 d5 8a 4c 0f 44 c0 48 c7 c7 40 27 d5 8a 48 c7 c6 1d 96 e1 8b 89 ea e8 c1 94 7f 03 <0f> 0b e9 e1 fe ff ff e8 95 67 43 fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900000076a8 EFLAGS: 00010046
RAX: aba110af1d678a00 RBX: ffff8881480200e0 RCX: ffff888017933b80
RDX: 0000000000000100 RSI: 0000000000000103 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: dffffc0000000000
R13: ffff88814802010d R14: ffff8881480200e8 R15: ffff88802aa1baba
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000034000 CR3: 000000007e983000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hidg_set_alt+0x126/0xa00 drivers/usb/gadget/function/f_hid.c:822
 set_config+0x734/0xfa0 drivers/usb/gadget/composite.c:972
 composite_setup+0x1999/0x2b60 drivers/usb/gadget/composite.c:1878
 configfs_composite_setup+0xc3/0x100 drivers/usb/gadget/configfs.c:1492
 dummy_timer+0x1338/0x33c0 drivers/usb/gadget/udc/dummy_hcd.c:1930
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__mutex_trylock_common+0x250/0x260 kernel/locking/mutex.c:131
Code: f8 48 c7 44 24 20 0e 36 e0 45 49 c7 44 0d 00 00 00 00 00 65 48 8b 0c 25 28 00 00 00 48 3b 4c 24 60 75 0f 48 8d 65 d8 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 e8 f3 f7 63 08 00 00 cc 55 41 57 41 56 41
RSP: 0018:ffffc90000cc7978 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff9635f718 RCX: aba110af1d678a00
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90000cc7920
RBP: ffffc90000cc7990 R08: ffffc90000cc7927 R09: 1ffff92000198f24
R10: dffffc0000000000 R11: fffff52000198f25 R12: 0000000000000000
R13: 1ffff92000198f20 R14: ffffffff9635f718 R15: ffff888017933b80
 __mutex_trylock kernel/locking/mutex.c:146 [inline]
 __mutex_lock_common+0x1f3/0x2400 kernel/locking/mutex.c:598
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 srcu_advance_state kernel/rcu/srcutree.c:1177 [inline]
 process_srcu+0x2f/0xca0 kernel/rcu/srcutree.c:1325
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess):
   0:	f8                   	clc
   1:	48 c7 44 24 20 0e 36 	movq   $0x45e0360e,0x20(%rsp)
   8:	e0 45
   a:	49 c7 44 0d 00 00 00 	movq   $0x0,0x0(%r13,%rcx,1)
  11:	00 00
  13:	65 48 8b 0c 25 28 00 	mov    %gs:0x28,%rcx
  1a:	00 00
  1c:	48 3b 4c 24 60       	cmp    0x60(%rsp),%rcx
  21:	75 0f                	jne    0x32
  23:	48 8d 65 d8          	lea    -0x28(%rbp),%rsp
  27:	5b                   	pop    %rbx
  28:	41 5c                	pop    %r12
* 2a:	41 5d                	pop    %r13 <-- trapping instruction
  2c:	41 5e                	pop    %r14
  2e:	41 5f                	pop    %r15
  30:	5d                   	pop    %rbp
  31:	c3                   	ret
  32:	e8 f3 f7 63 08       	call   0x863f82a
  37:	00 00                	add    %al,(%rax)
  39:	cc                   	int3
  3a:	55                   	push   %rbp
  3b:	41 57                	push   %r15
  3d:	41 56                	push   %r14
  3f:	41                   	rex.B