------------[ cut here ]------------ usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0 WARNING: CPU: 1 PID: 110 at drivers/usb/gadget/udc/core.c:125 usb_ep_enable+0x210/0x3c0 drivers/usb/gadget/udc/core.c:124 Modules linked in: CPU: 1 UID: 0 PID: 110 Comm: udevd Not tainted syzkaller #0 ddbfd9edd557061ac399360ec6a3953dfb6172b5 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:usb_ep_enable+0x210/0x3c0 drivers/usb/gadget/udc/core.c:124 Code: 4d 00 48 c7 c0 20 61 6d 86 49 c7 c0 40 61 6d 86 4c 0f 44 c0 48 c7 c7 e0 60 6d 86 48 c7 c6 16 63 1d 87 44 89 f2 e8 00 35 4b fd <0f> 0b e9 4c ff ff ff e8 44 64 ce fd 49 bc 00 00 00 00 00 fc ff df RSP: 0018:ffffc90000230878 EFLAGS: 00010046 RAX: 8a33c7fcf749e200 RBX: ffff888105ea80b0 RCX: ffff88810d70cc00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc900002308a0 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a R10: dffffc0000000000 R11: ffffed103ede529b R12: dffffc0000000000 R13: ffff888105ea80b8 R14: 0000000000000081 R15: ffff88811a1e7e3a FS: 00007f2c77173880(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f61a2bc3ff8 CR3: 000000010dfc2000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000003 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: hidg_set_alt+0x138/0xa70 drivers/usb/gadget/function/f_hid.c:1057 set_config+0x812/0xd10 drivers/usb/gadget/composite.c:1021 composite_setup+0x18b0/0x3320 drivers/usb/gadget/composite.c:1929 configfs_composite_setup+0xc6/0x110 drivers/usb/gadget/configfs.c:1883 dummy_timer+0x2eeb/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:1935 __run_hrtimer kernel/time/hrtimer.c:1758 [inline] __hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1822 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1839 handle_softirqs+0x1aa/0x620 kernel/softirq.c:621 __do_softirq kernel/softirq.c:659 [inline] invoke_softirq kernel/softirq.c:476 [inline] __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702 RIP: 0010:sock_sendmsg_nosec net/socket.c:712 [inline] RIP: 0010:__sock_sendmsg net/socket.c:727 [inline] RIP: 0010:____sys_sendmsg+0x99b/0xa00 net/socket.c:2583 Code: 0a fa ff ff e8 56 e9 0e fd 48 8b 7c 24 30 48 8b 74 24 10 48 89 da 4d 89 fb 49 89 f7 41 ba 42 16 36 1f 45 03 53 f1 74 02 0f 0b <41> ff d3 0f 1f 00 e9 32 fc ff ff e8 25 e9 0e fd 0f 0b e8 1e e9 0e RSP: 0018:ffffc900007efa20 EFLAGS: 00000257 RAX: ffffffff8478901a RBX: 000000000000010a RCX: ffff88810d70cc00 RDX: 000000000000010a RSI: ffffc900007efe20 RDI: ffff88811071f0c0 RBP: ffffc900007efb50 R08: 00000000001fffff R09: 00000002ffffffff R10: 0000000000000000 R11: ffffffff84aae600 R12: dffffc0000000000 R13: 1ffff920000fdf50 R14: 1ffff920000fdfc9 R15: ffffc900007efe20 ___sys_sendmsg+0x2a6/0x370 net/socket.c:2637 __sys_sendmsg net/socket.c:2669 [inline] __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x1be/0x2a0 net/socket.c:2672 x64_sys_call+0x2a4c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f2c76aa7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffdf201e3c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2c77173880 RCX: 00007f2c76aa7407 RDX: 0000000000000000 RSI: 00007ffdf201e420 RDI: 0000000000000004 RBP: 00005618631359b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000e2 R13: 0000561862e5bd80 R14: 0000000000000000 R15: 0000000000000000 ---[ end trace 0000000000000000 ]--- configfs-gadget.g1 gadget.0: Enable IN endpoint FAILED! ---------------- Code disassembly (best guess), 3 bytes skipped: 0: ff ljmp (bad) 1: e8 56 e9 0e fd call 0xfd0ee95c 6: 48 8b 7c 24 30 mov 0x30(%rsp),%rdi b: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 10: 48 89 da mov %rbx,%rdx 13: 4d 89 fb mov %r15,%r11 16: 49 89 f7 mov %rsi,%r15 19: 41 ba 42 16 36 1f mov $0x1f361642,%r10d 1f: 45 03 53 f1 add -0xf(%r11),%r10d 23: 74 02 je 0x27 25: 0f 0b ud2 * 27: 41 ff d3 call *%r11 <-- trapping instruction 2a: 0f 1f 00 nopl (%rax) 2d: e9 32 fc ff ff jmp 0xfffffc64 32: e8 25 e9 0e fd call 0xfd0ee95c 37: 0f 0b ud2 39: e8 .byte 0xe8 3a: 1e (bad) 3b: e9 .byte 0xe9 3c: 0e (bad)