2048-page vmalloc region starting at 0xf[  382.887901][ T4913]  2048-page vmalloc region starting at 0xffffc9001be51000 allocated at kcov_ioctl+0x58/0x650 kernel/kcov.c:736
list_del corruption. next->prev should be ffffc9001a24c000, but was 0000000000000000. (next=ffffc9001be51000)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:67!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 4913 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
Workqueue: hci3 hci_rx_work
RIP: 0010:__list_del_entry_valid_or_report+0x18a/0x190 lib/list_debug.c:65
Code: 2c 02 41 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d 62 61 fd 49 8b 56 08 48 c7 c7 c0 67 ca 8b 48 89 de 4c 89 f1 e8 a7 24 5a 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:ffffc900101c7a08 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001a24c000 RCX: 1fc55ba6b0870100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10170e4903 R12: 1ffff920037ca201
R13: dffffc0000000000 R14: ffffc9001be51000 R15: ffffc9001be51008
FS:  0000000000000000(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4368742b0 CR3: 000000005fdc0000 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+0x295/0x6f0 kernel/kcov.c:930
 kcov_remote_start_common include/linux/kcov.h:48 [inline]
 hci_rx_work+0x10f/0x1020 net/bluetooth/hci_core.c:4002
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 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: 2c 02 41 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d 62 61 fd 49 8b 56 08 48 c7 c7 c0 67 ca 8b 48 89 de 4c 89 f1 e8 a7 24 5a 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:ffffc900101c7a08 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc9001a24c000 RCX: 1fc55ba6b0870100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000100000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10170e4903 R12: 1ffff920037ca201
R13: dffffc0000000000 R14: ffffc9001be51000 R15: ffffc9001be51008
FS:  0000000000000000(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4368742b0 CR3: 000000005fdc0000 CR4: 00000000003526f0