------------[ cut here ]------------ usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0 WARNING: CPU: 0 PID: 15 at drivers/usb/gadget/udc/core.c:125 usb_ep_enable+0x27c/0x4d0 drivers/usb/gadget/udc/core.c:124 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:usb_ep_enable+0x27c/0x4d0 drivers/usb/gadget/udc/core.c:124 Code: 49 8b 0e 48 c7 c0 80 cf 3e 8b 49 c7 c0 a0 cf 3e 8b 4c 0f 44 c0 48 c7 c7 40 cf 3e 8b 48 c7 c6 19 aa 63 8c 89 ea e8 d4 f4 ce fa <0f> 0b e9 c4 fe ff ff e8 78 6a 03 fb 49 bc 00 00 00 00 00 fc ff df RSP: 0018:ffffc90000147628 EFLAGS: 00010046 RAX: 88a0fdb050b28600 RBX: ffff8880266dc0e0 RCX: ffff88813fed3c00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 0000000000000081 R08: ffff8880b8e279db R09: 1ffff110171c4f3b R10: dffffc0000000000 R11: ffffed10171c4f3c R12: dffffc0000000000 R13: ffff8880266dc10d R14: ffff8880266dc0e8 R15: ffff88801aeca63a FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b004e CR3: 000000000c88e000 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+0x6e8/0xf70 drivers/usb/gadget/composite.c:986 composite_setup+0x194c/0x2b00 drivers/usb/gadget/composite.c:1893 configfs_composite_setup+0xc3/0x100 drivers/usb/gadget/configfs.c:1484 dummy_timer+0x12ea/0x3420 drivers/usb/gadget/udc/dummy_hcd.c:1936 __run_hrtimer kernel/time/hrtimer.c:1751 [inline] __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832 handle_softirqs+0x291/0x910 kernel/softirq.c:596 run_ksoftirqd+0xa4/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x667/0xa30 kernel/smpboot.c:164 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295