usblp 1-1:1.0: usblp0: USB Unidirectional printer dev 4 if 0 alt 255 proto 1 vid 0x0525 pid 0xA4A8
 1024-page vmalloc region starting at 0xffffc900101d4000 allocated at kcov_ioctl+0x58/0x640 kernel/kcov.c:716
list_add corruption. next->prev should be prev (ffffffff8da23a20), but was ffffffff00080000. (next=ffffc900101d4000).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 31 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0xf4/0x130 lib/list_debug.c:29
Code: fb 71 fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 23 6c 92 fd 48 8b 53 08 48 c7 c7 e0 e8 65 8b 4c 89 f6 48 89 d9 e8 0d 48 95 fc 90 <0f> 0b 4c 89 f7 e8 62 fb 71 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 f3
RSP: 0018:ffffc90000a5f710 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc900101d4000 RCX: 74d418e2837ae800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff9200203a801 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124923 R12: ffffc900101d4008
R13: dffffc0000000000 R14: ffffffff8da23a20 R15: ffffc9001b5fa000
FS:  0000000000000000(0000) GS:ffff8881268fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000069030 CR3: 00000000295ee000 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:1060
 hub_event+0x49d8/0x4f60 drivers/usb/core/hub.c:5998
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0x89f/0xd90 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xf4/0x130 lib/list_debug.c:29
Code: fb 71 fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 23 6c 92 fd 48 8b 53 08 48 c7 c7 e0 e8 65 8b 4c 89 f6 48 89 d9 e8 0d 48 95 fc 90 <0f> 0b 4c 89 f7 e8 62 fb 71 fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 f3
RSP: 0018:ffffc90000a5f710 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc900101d4000 RCX: 74d418e2837ae800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff9200203a801 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124923 R12: ffffc900101d4008
R13: dffffc0000000000 R14: ffffffff8da23a20 R15: ffffc9001b5fa000
FS:  0000000000000000(0000) GS:ffff8881268fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000069030 CR3: 000000000d7b4000 CR4: 00000000003526f0