1024-page vmalloc region starting at 0xffffc90006e21000 allocated at kcov_ioctl+0x58/0x640 kernel/kcov.c:726
list_del corruption. next->prev should be ffffc9001c3f5000, but was 0000000000000000. (next=ffffc90006e21000)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:67!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5112 Comm: kworker/u9:1 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: hci4 hci_rx_work
RIP: 0010:__list_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65
Code: 6c c9 61 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d 01 83 fd 49 8b 56 08 48 c7 c7 40 4d a6 8b 48 89 de 4c 89 f1 e8 07 02 80 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:ffffc9000e70fa00 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001c3f5000 RCX: fa52a4b71a06e500
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104923 R12: 1ffff92000dc4201
R13: dffffc0000000000 R14: ffffc90006e21000 R15: ffffc90006e21008
FS:  0000000000000000(0000) GS:ffff888126340000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d12fc3810 CR3: 0000000020720000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 kcov_remote_area_get kernel/kcov.c:143 [inline]
 kcov_remote_start+0x2af/0x710 kernel/kcov.c:920
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 hci_rx_work+0x10f/0x1030 net/bluetooth/hci_core.c:4040
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 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_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65
Code: 6c c9 61 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d 01 83 fd 49 8b 56 08 48 c7 c7 40 4d a6 8b 48 89 de 4c 89 f1 e8 07 02 80 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:ffffc9000e70fa00 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001c3f5000 RCX: fa52a4b71a06e500
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104923 R12: 1ffff92000dc4201
R13: dffffc0000000000 R14: ffffc90006e21000 R15: ffffc90006e21008
FS:  0000000000000000(0000) GS:ffff888126340000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d12fc3810 CR3: 0000000020720000 CR4: 00000000003526f0