1024-page vmalloc region starting at 0xffffc9000e94d000 allocated at kcov_ioctl+0x58/0x650 kernel/kcov.c:716
list_add corruption. next->prev should be prev (ffffffff8d3fcd80), but was ffffffff00080000. (next=ffffc9000e94d000).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 44 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_add_valid_or_report+0xf4/0x130 lib/list_debug.c:29
Code: 7f 7e fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 63 7f 9e fd 48 8b 53 08 48 c7 c7 20 d2 1d 8b 4c 89 f6 48 89 d9 e8 7d f9 a6 fc 90 <0f> 0b 4c 89 f7 e8 22 7f 7e fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 33
RSP: 0018:ffffc90000b57710 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc9000e94d000 RCX: 62f6e73681efee00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92001d29a01 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed101712487b R12: ffffc9000e94d008
R13: dffffc0000000000 R14: ffffffff8d3fcd80 R15: ffffc9001a676000
FS:  0000000000000000(0000) GS:ffff888127120000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55ec125f98 CR3: 000000000d1a6000 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+0x52d/0x660 kernel/kcov.c:1060
 hub_event+0x45d2/0x4a20 drivers/usb/core/hub.c:5997
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 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: 7f 7e fd 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 63 7f 9e fd 48 8b 53 08 48 c7 c7 20 d2 1d 8b 4c 89 f6 48 89 d9 e8 7d f9 a6 fc 90 <0f> 0b 4c 89 f7 e8 22 7f 7e fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 33
RSP: 0018:ffffc90000b57710 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffffc9000e94d000 RCX: 62f6e73681efee00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92001d29a01 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed101712487b R12: ffffc9000e94d008
R13: dffffc0000000000 R14: ffffffff8d3fcd80 R15: ffffc9001a676000
FS:  0000000000000000(0000) GS:ffff888127120000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55ec125f98 CR3: 000000000d1a6000 CR4: 00000000003526f0