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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 1350 at drivers/usb/gadget/udc/core.c:134 usb_ep_enable+0x210/0x3c0 drivers/usb/gadget/udc/core.c:133
Modules linked in:
CPU: 0 UID: 0 PID: 1350 Comm: udevd Not tainted syzkaller #0 fb4d83c2a69de87362621e77e54386714fae73a9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:usb_ep_enable+0x210/0x3c0 drivers/usb/gadget/udc/core.c:133
Code: 4d 00 48 c7 c0 20 c2 6d 86 49 c7 c0 40 c2 6d 86 4c 0f 44 c0 48 c7 c7 e0 c1 6d 86 48 c7 c6 3d d9 1f 87 44 89 f2 e8 80 af 46 fd <0f> 0b e9 4c ff ff ff e8 04 cc cb fd 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000007878 EFLAGS: 00010046
RAX: 21a2e2e4ca5bce00 RBX: ffff888104bb40b0 RCX: ffff888121778000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900000078a0 R08: ffff8881f6c29593 R09: 1ffff1103ed852b2
R10: dffffc0000000000 R11: ffffed103ed852b3 R12: dffffc0000000000
R13: ffff888104bb40b8 R14: 0000000000000081 R15: ffff88811a8a443a
FS:  00007f4f29f53880(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555907174e8 CR3: 0000000122192000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 hidg_set_alt+0x138/0xa70 drivers/usb/gadget/function/f_hid.c:1057
 set_config+0x80f/0xd10 drivers/usb/gadget/composite.c:1021
 composite_setup+0x18b0/0x3320 drivers/usb/gadget/composite.c:1930
 configfs_composite_setup+0xc6/0x110 drivers/usb/gadget/configfs.c:1883
 dummy_timer+0x2eee/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:1935
 __run_hrtimer kernel/time/hrtimer.c:1758 [inline]
 __hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1822
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1839
 handle_softirqs+0x1b0/0x5b0 kernel/softirq.c:684
 __do_softirq kernel/softirq.c:722 [inline]
 invoke_softirq kernel/softirq.c:539 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:771
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:783
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:strcmp+0x45/0xc0 lib/string.c:273
Code: 45 31 f6 4a 8d 04 37 48 89 c1 48 c1 e9 03 0f b6 0c 19 84 c9 75 28 46 0f b6 3c 37 4a 8d 04 36 48 89 c1 48 c1 e9 03 0f b6 0c 19 <84> c9 75 2f 46 3a 3c 36 75 48 49 ff c6 45 84 ff 75 c7 eb 4a 89 c2
RSP: 0018:ffffc90000fcf800 EFLAGS: 00000a06
RAX: ffffffff86606c20 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86606c20 RDI: ffff88811d803368
RBP: ffffc90000fcf828 R08: ffff88810564ca97 R09: 1ffff11020ac9952
R10: dffffc0000000000 R11: ffffed1020ac9953 R12: ffff88810564caa0
R13: ffff88811d803368 R14: 0000000000000000 R15: 0000000000000070
 kernfs_dop_revalidate+0x35b/0x4e0 fs/kernfs/dir.c:1176
 d_revalidate fs/namei.c:868 [inline]
 lookup_fast+0x211/0x540 fs/namei.c:-1
 walk_component fs/namei.c:2057 [inline]
 link_path_walk+0x683/0xeb0 fs/namei.c:2426
 path_openat+0x298/0x35a0 fs/namei.c:3937
 do_filp_open+0x1f2/0x440 fs/namei.c:3968
 do_sys_openat2+0x134/0x1d0 fs/open.c:1434
 do_sys_open fs/open.c:1449 [inline]
 __do_sys_openat fs/open.c:1465 [inline]
 __se_sys_openat fs/open.c:1460 [inline]
 __x64_sys_openat+0x13a/0x170 fs/open.c:1460
 x64_sys_call+0xe69/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:258
 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: 0033:0x7f4f29fdf407
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:00007ffc6d682a70 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4f29f53880 RCX: 00007f4f29fdf407
RDX: 0000000000080000 RSI: 00007ffc6d682bf0 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000563e2ef5f7f5
R13: 0000563e2ef5f7f5 R14: 0000000000000001 R15: 0000563e2ef7a140
 </TASK>
---[ end trace 0000000000000000 ]---
configfs-gadget.g1 gadget.0: Enable IN endpoint FAILED!
----------------
Code disassembly (best guess):
   0:	45 31 f6             	xor    %r14d,%r14d
   3:	4a 8d 04 37          	lea    (%rdi,%r14,1),%rax
   7:	48 89 c1             	mov    %rax,%rcx
   a:	48 c1 e9 03          	shr    $0x3,%rcx
   e:	0f b6 0c 19          	movzbl (%rcx,%rbx,1),%ecx
  12:	84 c9                	test   %cl,%cl
  14:	75 28                	jne    0x3e
  16:	46 0f b6 3c 37       	movzbl (%rdi,%r14,1),%r15d
  1b:	4a 8d 04 36          	lea    (%rsi,%r14,1),%rax
  1f:	48 89 c1             	mov    %rax,%rcx
  22:	48 c1 e9 03          	shr    $0x3,%rcx
  26:	0f b6 0c 19          	movzbl (%rcx,%rbx,1),%ecx
* 2a:	84 c9                	test   %cl,%cl <-- trapping instruction
  2c:	75 2f                	jne    0x5d
  2e:	46 3a 3c 36          	cmp    (%rsi,%r14,1),%r15b
  32:	75 48                	jne    0x7c
  34:	49 ff c6             	inc    %r14
  37:	45 84 ff             	test   %r15b,%r15b
  3a:	75 c7                	jne    0x3
  3c:	eb 4a                	jmp    0x88
  3e:	89 c2                	mov    %eax,%edx