------------[ cut here ]------------
usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: drivers/usb/gadget/udc/core.c:124 at usb_ep_enable+0x3e6/0x490 drivers/usb/gadget/udc/core.c:124, CPU#3: syz.7.265/7128
Modules linked in:
CPU: 3 UID: 0 PID: 7128 Comm: syz.7.265 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:usb_ep_enable+0x3f8/0x490 drivers/usb/gadget/udc/core.c:124
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 93 00 00 00 48 8d 3d 2a 0f 84 0a 48 8b 4b 08 40 0f b6 d5 4d 89 e0 48 c7 c6 60 b8 fb 8c <67> 48 0f b9 3a bd ea ff ff ff e9 8e fd ff ff 49 c7 c4 00 ab fb 8c
RSP: 0000:ffffc900027a7940 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff88802c8d00e0 RCX: ffffffff8cfbef60
RDX: 0000000000000081 RSI: ffffffff8cfbb860 RDI: ffffffff927811b0
RBP: 0000000000000081 R08: ffffffff8cfbab40 R09: 0000000000000000
R10: ffffffff926ab35f R11: ffff88801e7da620 R12: ffffffff8cfbab40
R13: 0000000000000000 R14: ffff88802c8d00e0 R15: ffff88805f779520
FS:  0000555561a1c500(0000) GS:ffff8880d4775000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffe6a32ff8 CR3: 00000000387bd000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hidg_set_alt+0x190/0xa10 drivers/usb/gadget/function/f_hid.c:1042
 set_config drivers/usb/gadget/composite.c:1018 [inline]
 composite_setup+0x2ccf/0x9290 drivers/usb/gadget/composite.c:1901
 configfs_composite_setup+0xfb/0x130 drivers/usb/gadget/configfs.c:1877
 dummy_timer+0x20a0/0x3840 drivers/usb/gadget/udc/dummy_hcd.c:1983
 __run_hrtimer kernel/time/hrtimer.c:2079 [inline]
 __hrtimer_run_queues+0x448/0x9a0 kernel/time/hrtimer.c:2136
 hrtimer_run_softirq+0x1ca/0x360 kernel/time/hrtimer.c:2153
 handle_softirqs+0x216/0xa20 kernel/softirq.c:669
 __do_softirq kernel/softirq.c:703 [inline]
 invoke_softirq kernel/softirq.c:542 [inline]
 __irq_exit_rcu+0x178/0x220 kernel/softirq.c:786
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x56/0xc0 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0033:0x7face766fd44
Code: 48 0f 7e ca 48 39 c2 73 65 48 39 f0 0f 82 2a 01 00 00 48 39 f2 72 65 66 0f c6 c0 01 0f 11 45 00 4c 89 e6 eb 09 90 48 8b 4b 08 <48> 83 c3 08 48 39 d1 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13
RSP: 002b:00007ffeeeec1190 EFLAGS: 00000293
RAX: 00007face701dd58 RBX: 00007face701cb18 RCX: ffffffff826b058e
RDX: ffffffff826b058e RSI: 00007face701dd58 RDI: 00007face701d3f8
RBP: 00007face701c870 R08: 00007face7a10000 R09: 00007face7a26128
R10: 0000000000000003 R11: 0000000000000009 R12: 00007face701df80
R13: 0000000000000019 R14: 00000000000002e2 R15: 0000000000000003
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 93 00 00 00    	jne    0xa4
  11:	48 8d 3d 2a 0f 84 0a 	lea    0xa840f2a(%rip),%rdi        # 0xa840f42
  18:	48 8b 4b 08          	mov    0x8(%rbx),%rcx
  1c:	40 0f b6 d5          	movzbl %bpl,%edx
  20:	4d 89 e0             	mov    %r12,%r8
  23:	48 c7 c6 60 b8 fb 8c 	mov    $0xffffffff8cfbb860,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bd ea ff ff ff       	mov    $0xffffffea,%ebp
  34:	e9 8e fd ff ff       	jmp    0xfffffdc7
  39:	49 c7 c4 00 ab fb 8c 	mov    $0xffffffff8cfbab00,%r12