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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 4236 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: 4236 Comm: kworker/0:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_power_efficient gc_worker
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: 0000:ffffc900000076a8 EFLAGS: 00010046
RAX: 72b44b5a8e93e200 RBX: ffff888022a7c0e0 RCX: ffff888022b3d940
RDX: 0000000000000100 RSI: 0000000080000102 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: dffffc0000000000
R13: ffff888022a7c10d R14: ffff888022a7c0e8 R15: ffff8880623667ba
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c33d56e CR3: 000000006337e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 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+0x1338/0x33c0 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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:769 [inline]
RIP: 0010:gc_worker+0xbd0/0x13d0 net/netfilter/nf_conntrack_core.c:1557
Code: fb ff ff 44 89 f1 80 e1 07 38 c1 0f 8c 0b fe ff ff 4c 89 f7 e8 c1 9c 95 f9 e9 fe fd ff ff e8 27 7a 50 f9 eb 05 e8 20 7a 50 f9 ab 97 97 01 89 c3 31 ff 89 c6 e8 70 7d 50 f9 85 db 74 15 e8 97
RSP: 0000:ffffc9000319fae0 EFLAGS: 00000293
RAX: ffffffff88288289 RBX: ffff88802bcce028 RCX: ffff888022b3d940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000319fc30 R08: ffffffff901ee15f R09: 1ffffffff203dc2b
R10: dffffc0000000000 R11: fffffbfff203dc2c R12: 000000000003380b
R13: ffff888021b5de00 R14: ffff88802bc00000 R15: dffffc0000000000
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
----------------
Code disassembly (best guess), 2 bytes skipped:
0: ff 44 89 f1 incl -0xf(%rcx,%rcx,4)
4: 80 e1 07 and $0x7,%cl
7: 38 c1 cmp %al,%cl
9: 0f 8c 0b fe ff ff jl 0xfffffe1a
f: 4c 89 f7 mov %r14,%rdi
12: e8 c1 9c 95 f9 call 0xf9959cd8
17: e9 fe fd ff ff jmp 0xfffffe1a
1c: e8 27 7a 50 f9 call 0xf9507a48
21: eb 05 jmp 0x28
23: e8 20 7a 50 f9 call 0xf9507a48
* 28: e8 ab 97 97 01 call 0x19797d8 <-- trapping instruction
2d: 89 c3 mov %eax,%ebx
2f: 31 ff xor %edi,%edi
31: 89 c6 mov %eax,%esi
33: e8 70 7d 50 f9 call 0xf9507da8
38: 85 db test %ebx,%ebx
3a: 74 15 je 0x51
3c: e8 .byte 0xe8
3d: 97 xchg %eax,%edi