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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 309 at drivers/usb/gadget/udc/core.c:125 usb_ep_enable+0x210/0x3c0 drivers/usb/gadget/udc/core.c:124
Modules linked in:
CPU: 0 UID: 0 PID: 309 Comm: sshd-session Not tainted syzkaller #0 c4896d72d1fb51cdc6291d08376a37fd8080d7bb
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 e0 50 6d 86 49 c7 c0 00 51 6d 86 4c 0f 44 c0 48 c7 c7 a0 50 6d 86 48 c7 c6 9d 05 1d 87 44 89 f2 e8 d0 c1 4b fd <0f> 0b e9 4c ff ff ff e8 94 e9 ce fd 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000007878 EFLAGS: 00010046
RAX: 27ad3e33dbabc500 RBX: ffff888104fc40b0 RCX: ffff8881228a4c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900000078a0 R08: ffff8881f6e294d3 R09: 1ffff1103edc529a
R10: dffffc0000000000 R11: ffffed103edc529b R12: dffffc0000000000
R13: ffff888104fc40b8 R14: 0000000000000081 R15: ffff88810834a0ba
FS:  00007f522a7e2300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557ec2e690 CR3: 00000001310dc000 CR4: 00000000003526b0
Call Trace:
 <IRQ>
 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+0x1885/0x32f0 drivers/usb/gadget/composite.c:1929
 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:1757 [inline]
 __hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pipe_poll+0x12d/0x4e0 fs/pipe.c:674
Code: 99 ff e9 b0 00 00 00 e8 b1 be 99 ff 49 bd 00 00 00 00 00 fc ff df 43 0f b6 04 2f 84 c0 48 8b 55 d0 0f 85 14 03 00 00 44 8b 32 <44> 89 f6 83 e6 02 31 ff e8 c6 c2 99 ff 41 83 e6 02 75 07 e8 7b be
RSP: 0018:ffffc900011cf7b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888100bbc800 RCX: dffffc0000000000
RDX: ffff88812282d3cc RSI: 0000000000000a02 RDI: ffff888100bbc830
RBP: ffffc900011cf7f0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000239ecc R12: ffffc900011cf940
R13: dffffc0000000000 R14: 00000000082a0001 R15: 1ffff11024505a79
 vfs_poll include/linux/poll.h:92 [inline]
 do_pollfd fs/select.c:872 [inline]
 do_poll fs/select.c:920 [inline]
 do_sys_poll+0x95f/0x1210 fs/select.c:1015
 __do_sys_ppoll fs/select.c:1121 [inline]
 __se_sys_ppoll+0x20a/0x2b0 fs/select.c:1101
 __x64_sys_ppoll+0xc3/0xf0 fs/select.c:1101
 x64_sys_call+0xd20/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:272
 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: 0033:0x7f522a0a7407
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:00007ffe1a4af6c0 EFLAGS: 00000202 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 00007f522a7e2300 RCX: 00007f522a0a7407
RDX: 00007ffe1a4af700 RSI: 0000000000000004 RDI: 0000555bed89dd60
RBP: 00007ffe1a4af770 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffe1a4af800 R11: 0000000000000202 R12: 0000000000000001
R13: 00007ffe1a4af800 R14: 0000000000000021 R15: 0000000000000004
 </TASK>
---[ end trace 0000000000000000 ]---
configfs-gadget.g1 gadget.0: Enable IN endpoint FAILED!
----------------
Code disassembly (best guess):
   0:	99                   	cltd
   1:	ff                   	ljmp   (bad)
   2:	e9 b0 00 00 00       	jmp    0xb7
   7:	e8 b1 be 99 ff       	call   0xff99bebd
   c:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  13:	fc ff df
  16:	43 0f b6 04 2f       	movzbl (%r15,%r13,1),%eax
  1b:	84 c0                	test   %al,%al
  1d:	48 8b 55 d0          	mov    -0x30(%rbp),%rdx
  21:	0f 85 14 03 00 00    	jne    0x33b
  27:	44 8b 32             	mov    (%rdx),%r14d
* 2a:	44 89 f6             	mov    %r14d,%esi <-- trapping instruction
  2d:	83 e6 02             	and    $0x2,%esi
  30:	31 ff                	xor    %edi,%edi
  32:	e8 c6 c2 99 ff       	call   0xff99c2fd
  37:	41 83 e6 02          	and    $0x2,%r14d
  3b:	75 07                	jne    0x44
  3d:	e8                   	.byte 0xe8
  3e:	7b be                	jnp    0xfffffffe