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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 956 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: 956 Comm: kworker/0:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
RIP: 0010:usb_ep_enable+0x27c/0x4d0 drivers/usb/gadget/udc/core.c:124
Code: 49 8b 0e 48 c7 c0 80 08 5e 8b 49 c7 c0 a0 08 5e 8b 4c 0f 44 c0 48 c7 c7 40 08 5e 8b 48 c7 c6 a9 84 85 8c 89 ea e8 e4 b3 d2 fa <0f> 0b e9 c4 fe ff ff e8 18 52 07 fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000007768 EFLAGS: 00010046
RAX: 324ef6653c55f500 RBX: ffff8881447c00e0 RCX: ffff888027391e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000081 R08: ffff8880b8c279db R09: 1ffff11017184f3b
R10: dffffc0000000000 R11: ffffed1017184f3c R12: dffffc0000000000
R13: ffff8881447c010d R14: ffff8881447c00e8 R15: ffff88807d0edc3a
FS:  0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3534ea CR3: 000000005f99a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hidg_set_alt+0x126/0xa00 drivers/usb/gadget/function/f_hid.c:823
 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+0x12ed/0x35d0 drivers/usb/gadget/udc/dummy_hcd.c:1954
 __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
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:fmul2 arch/x86/crypto/curve25519-x86_64.c:296 [inline]
RIP: 0010:point_add_and_double arch/x86/crypto/curve25519-x86_64.c:1006 [inline]
RIP: 0010:montgomery_ladder arch/x86/crypto/curve25519-x86_64.c:1098 [inline]
RIP: 0010:curve25519_ever64 arch/x86/crypto/curve25519-x86_64.c:1252 [inline]
RIP: 0010:curve25519_arch+0x1fac/0x5140 arch/x86/crypto/curve25519-x86_64.c:1599
Code: 0f 38 f6 01 c4 e2 b3 f6 59 28 66 4d 0f 38 f6 cd f3 4c 0f 38 f6 49 08 c4 62 ab f6 69 30 66 4c 0f 38 f6 d3 f3 4c 0f 38 f6 51 10 <c4> e2 a3 f6 41 38 66 4d 0f 38 f6 dd f3 4c 0f 38 f6 59 18 66 48 0f
RSP: 0018:ffffc90004da70e0 EFLAGS: 00000a46
RAX: 65748021853aefd3 RBX: 0000000000000017 RCX: ffffc90004da7180
RDX: 0000000000000026 RSI: ffffc90004da7260 RDI: 0000000000000000
RBP: ffffc90004da7430 R08: dadf85766018c6be R09: abb9a9c6a1e7be2c
R10: 668de4af64014356 R11: 9ef65e68efc7914a R12: ffffc90004da72e0
R13: 0000000000000006 R14: 4ec48997318292bf R15: ffffc90004da72e0
 curve25519 include/crypto/curve25519.h:39 [inline]
 mix_dh+0xd1/0x290 drivers/net/wireguard/noise.c:411
 wg_noise_handshake_consume_initiation+0x345/0xa80 drivers/net/wireguard/noise.c:608
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:144 [inline]
 wg_packet_handshake_receive_worker+0x66e/0x1070 drivers/net/wireguard/receive.c:213
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 38 f6 01          	wrssd  %eax,(%rcx)
   4:	c4 e2 b3 f6 59 28    	mulx   0x28(%rcx),%r9,%rbx
   a:	66 4d 0f 38 f6 cd    	adcx   %r13,%r9
  10:	f3 4c 0f 38 f6 49 08 	adox   0x8(%rcx),%r9
  17:	c4 62 ab f6 69 30    	mulx   0x30(%rcx),%r10,%r13
  1d:	66 4c 0f 38 f6 d3    	adcx   %rbx,%r10
  23:	f3 4c 0f 38 f6 51 10 	adox   0x10(%rcx),%r10
* 2a:	c4 e2 a3 f6 41 38    	mulx   0x38(%rcx),%r11,%rax <-- trapping instruction
  30:	66 4d 0f 38 f6 dd    	adcx   %r13,%r11
  36:	f3 4c 0f 38 f6 59 18 	adox   0x18(%rcx),%r11
  3d:	66                   	data16
  3e:	48                   	rex.W
  3f:	0f                   	.byte 0xf