1024-page vmalloc region starting at 0xffffc90004949000 allocated at kcov_ioctl+0x58/0x660 kernel/kcov.c:736
list_del corruption. next->prev should be ffffc9001891f000, but was 0000000000000000. (next=ffffc90004949000)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:67!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65
Code: ac 09 4c fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6d a5 6c fd 49 8b 56 08 48 c7 c7 c0 26 ac 8b 48 89 de 4c 89 f1 e8 07 be 63 fc 90 <0f> 0b cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000e77f8 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001891f000 RCX: 0abdf31fff917000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10170c48fb R12: 1ffff92000929201
R13: dffffc0000000000 R14: ffffc90004949000 R15: ffffc90004949008
FS:  0000000000000000(0000) GS:ffff888125c7e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c8069b1950 CR3: 000000004257e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:246 [inline]
 list_del include/linux/list.h:260 [inline]
 kcov_remote_area_get kernel/kcov.c:143 [inline]
 kcov_remote_start+0x2af/0x710 kernel/kcov.c:930
 kcov_remote_start_usb include/linux/kcov.h:53 [inline]
 hub_event+0x150/0x4f60 drivers/usb/core/hub.c:5889
 process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
 process_scheduled_works kernel/workqueue.c:3401 [inline]
 worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 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_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65
Code: ac 09 4c fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6d a5 6c fd 49 8b 56 08 48 c7 c7 c0 26 ac 8b 48 89 de 4c 89 f1 e8 07 be 63 fc 90 <0f> 0b cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000e77f8 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001891f000 RCX: 0abdf31fff917000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10170c48fb R12: 1ffff92000929201
R13: dffffc0000000000 R14: ffffc90004949000 R15: ffffc90004949008
FS:  0000000000000000(0000) GS:ffff888125c7e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c8069b1950 CR3: 000000004257e000 CR4: 00000000003526f0