list_add double add: new=ffff8880286bbb18, prev=ffff8880286bbb18, next=ffff88803bf77070.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:35!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 6874 Comm: syz.2.55 Not tainted 6.14.0-rc5-syzkaller-g848e07631744 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__list_add_valid_or_report+0x143/0x190 lib/list_debug.c:35
Code: 89 f1 48 c7 c7 a0 69 d3 8b 48 89 ee e8 d6 75 cf fc 90 0f 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 20 6a d3 8b e8 be 75 cf fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 9f 3b 53 fd 48 8b 34 24 e9 07 ff ff
RSP: 0018:ffffc900030a7590 EFLAGS: 00010082
RAX: 0000000000000058 RBX: ffff8880286bbb00 RCX: ffffffff819956c9
RDX: 0000000000000000 RSI: ffffffff8199ba3e RDI: 0000000000000005
RBP: ffff88803bf77070 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000004 R11: ffffffff96263b68 R12: ffff8880286bbb18
R13: ffff88803bf77078 R14: ffff8880286bbb18 R15: ffff88803bf77078
FS:  00007f1cb5c3e6c0(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000003000 CR3: 0000000050490000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 usb_hcd_link_urb_to_ep+0x21d/0x390 drivers/usb/core/hcd.c:1158
 dummy_urb_enqueue+0x291/0x8e0 drivers/usb/gadget/udc/dummy_hcd.c:1288
 usb_hcd_submit_urb+0x258/0x1c60 drivers/usb/core/hcd.c:1533
 usb_submit_urb+0x87c/0x1730 drivers/usb/core/urb.c:581
 cm109_submit_buzz_toggle+0xd8/0x180 drivers/input/misc/cm109.c:351
 cm109_toggle_buzzer_async+0x90/0xa0 drivers/input/misc/cm109.c:484
 cm109_input_ev+0x171/0x1b0 drivers/input/misc/cm109.c:615
 input_event_dispose drivers/input/input.c:321 [inline]
 input_handle_event+0x14e/0x14d0 drivers/input/input.c:369
 input_inject_event+0x1c8/0x380 drivers/input/input.c:423
 kd_sound_helper+0x17a/0x280 drivers/tty/vt/keyboard.c:256
 input_handler_for_each_handle+0xd4/0x250 drivers/input/input.c:2554
 kd_mksound+0x89/0x130 drivers/tty/vt/keyboard.c:280
 handle_ascii drivers/tty/vt/vt.c:2251 [inline]
 do_con_trol drivers/tty/vt/vt.c:2568 [inline]
 do_con_write+0x2e6f/0x7bb0 drivers/tty/vt/vt.c:3092
 con_write+0x23/0xb0 drivers/tty/vt/vt.c:3432
 process_output_block drivers/tty/n_tty.c:574 [inline]
 n_tty_write+0x419/0x1140 drivers/tty/n_tty.c:2389
 iterate_tty_write drivers/tty/tty_io.c:1015 [inline]
 file_tty_write.constprop.0+0x506/0x9a0 drivers/tty/tty_io.c:1090
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x5ae/0x1150 fs/read_write.c:679
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1cb4d8cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1cb5c3e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1cb4fa6080 RCX: 00007f1cb4d8cde9
RDX: 0000000000001006 RSI: 0000400000002080 RDI: 0000000000000006
RBP: 00007f1cb4e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1cb4fa6080 R15: 00007ffed17395b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x143/0x190 lib/list_debug.c:35
Code: 89 f1 48 c7 c7 a0 69 d3 8b 48 89 ee e8 d6 75 cf fc 90 0f 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 20 6a d3 8b e8 be 75 cf fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 9f 3b 53 fd 48 8b 34 24 e9 07 ff ff
RSP: 0018:ffffc900030a7590 EFLAGS: 00010082
RAX: 0000000000000058 RBX: ffff8880286bbb00 RCX: ffffffff819956c9
RDX: 0000000000000000 RSI: ffffffff8199ba3e RDI: 0000000000000005
RBP: ffff88803bf77070 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000004 R11: ffffffff96263b68 R12: ffff8880286bbb18
R13: ffff88803bf77078 R14: ffff8880286bbb18 R15: ffff88803bf77078
FS:  00007f1cb5c3e6c0(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000003000 CR3: 0000000050490000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400