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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 1 PID: 14714 at drivers/usb/gadget/udc/core.c:108 usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Modules linked in:
CPU: 1 PID: 14714 Comm: syz.3.2509 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Code: 49 8b 0e 48 c7 c0 e0 2d d5 8a 49 c7 c0 00 2e d5 8a 4c 0f 44 c0 48 c7 c7 a0 2d d5 8a 48 c7 c6 6e da e1 8b 89 ea e8 41 ee 80 03 <0f> 0b e9 e1 fe ff ff e8 c5 e7 42 fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000dd0688 EFLAGS: 00010046
RAX: 24779b23e4ab3200 RBX: ffff888024a600e0 RCX: ffff88805075d940
RDX: 0000000000000100 RSI: 0000000000000103 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b912795b R09: 1ffff11017224f2b
R10: dffffc0000000000 R11: ffffed1017224f2c R12: dffffc0000000000
R13: ffff888024a6010d R14: ffff888024a600e8 R15: ffff88807c0bf5ba
FS: 00005555703fd500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf603c74b8 CR3: 0000000061c4f000 CR4: 00000000003506e0
DR0: ffffffffffffffff DR1: 00000000000001f7 DR2: 00000000ffffffff
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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+0x1338/0x34a0 drivers/usb/gadget/udc/dummy_hcd.c:1944
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 9f ce 86 f7 65 8b 05 20 e5 36 76 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc9000416f960 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 24779b23e4ab3200
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc9000416f9f8 R08: ffffffff9021414f R09: 1ffffffff2042829
R10: dffffc0000000000 R11: fffffbfff204282a R12: dffffc0000000000
R13: 1ffffffff2cda2a4 R14: ffffffff8d3b8560 R15: 1ffff9200082df2c
spin_unlock_irqrestore include/linux/spinlock.h:419 [inline]
snd_seq_client_use_ptr+0x9e/0xa80 sound/core/seq/seq_clientmgr.c:161
get_event_dest_client sound/core/seq/seq_clientmgr.c:526 [inline]
snd_seq_deliver_single_event+0xff/0xb30 sound/core/seq/seq_clientmgr.c:637
snd_seq_kernel_client_dispatch+0x1fc/0x2f0 sound/core/seq/seq_clientmgr.c:2408
send_timer_event sound/core/seq/oss/seq_oss_timer.c:140 [inline]
snd_seq_oss_timer_stop+0x13e/0x230 sound/core/seq/oss/seq_oss_timer.c:176
snd_seq_oss_release+0xfb/0x310 sound/core/seq/oss/seq_oss_init.c:413
odev_release+0x52/0x70 sound/core/seq/oss/seq_oss.c:144
__fput+0x212/0x8c0 fs/file_table.c:311
task_work_run+0x125/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:184
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:217
__syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:310
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fcffdade159
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:00007ffdd09e35d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fcffdd67da0 RCX: 00007fcffdade159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fcffdd67da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007fcffdd67cb0 R11: 0000000000000246 R12: 00000000000d4b35
R13: 00007fcffdd6618c R14: 00000000000d4af6 R15: 00007fcffdd66180
----------------
Code disassembly (best guess):
0: c7 44 24 20 00 00 00 movl $0x0,0x20(%rsp)
7: 00
8: 9c pushf
9: 8f 44 24 20 pop 0x20(%rsp)
d: f7 44 24 20 00 02 00 testl $0x200,0x20(%rsp)
14: 00
15: 41 c6 04 07 f8 movb $0xf8,(%r15,%rax,1)
1a: 75 4b jne 0x67
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 9f ce 86 f7 call 0xf786cece <-- trapping instruction
2f: 65 8b 05 20 e5 36 76 mov %gs:0x7636e520(%rip),%eax # 0x7636e556
36: 85 c0 test %eax,%eax
38: 74 3c je 0x76
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss