usb 5-1: SerialNumber: syz
usb 5-1: No status endpoint found
 1024-page vmalloc region starting at 0xffffc9000e6e1000 allocated at kcov_ioctl+0x58/0x640 kernel/kcov.c:726
list_add corruption. next->prev should be prev (ffffffff8de28360), but was ffffffff00080000. (next=ffffc9000e6e1000).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5969 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0xf4/0x130 lib/list_debug.c:29
Code: fd 60 fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 93 31 82 fd 48 8b 53 08 48 c7 c7 60 78 a6 8b 4c 89 f6 48 89 d9 e8 9d f2 7e fc 90 <0f> 0b 4c 89 f7 e8 e2 fc 60 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 63
RSP: 0018:ffffc9000552f770 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc9000e6e1000 RCX: afa4690f2ca7ec00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92001cdc201 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed101710491b R12: ffffc9000e6e1008
R13: dffffc0000000000 R14: ffffffff8de28360 R15: ffffc9001bbb5000
FS:  0000000000000000(0000) GS:ffff888126336000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000006a030 CR3: 000000005c2d4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:96 [inline]
 __list_add include/linux/list.h:158 [inline]
 list_add include/linux/list.h:177 [inline]
 kcov_remote_area_put kernel/kcov.c:156 [inline]
 kcov_remote_stop+0x457/0x680 kernel/kcov.c:1074
 hub_event+0x49d8/0x4f60 drivers/usb/core/hub.c:5998
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xf4/0x130 lib/list_debug.c:29
Code: fd 60 fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 93 31 82 fd 48 8b 53 08 48 c7 c7 60 78 a6 8b 4c 89 f6 48 89 d9 e8 9d f2 7e fc 90 <0f> 0b 4c 89 f7 e8 e2 fc 60 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 63
RSP: 0018:ffffc9000552f770 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc9000e6e1000 RCX: afa4690f2ca7ec00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92001cdc201 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed101710491b R12: ffffc9000e6e1008
R13: dffffc0000000000 R14: ffffffff8de28360 R15: ffffc9001bbb5000
FS:  0000000000000000(0000) GS:ffff888126336000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000006a030 CR3: 000000005c2d4000 CR4: 00000000003526f0