non-paged memory list_del corruption, ffff88802fe28e00->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:58! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 5848 Comm: kworker/u9:6 Not tainted 6.14.0-rc7-syzkaller-01962-ga19f40d919ca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: hci4 hci_conn_timeout RIP: 0010:__list_del_entry_valid_or_report+0x10f/0x190 lib/list_debug.c:56 Code: 60 03 81 8c 4c 89 fe e8 ef 53 2a fc 90 0f 0b 48 89 df e8 b4 8d 0a fd 48 c7 c7 c0 03 81 8c 4c 89 fe 48 89 da e8 d2 53 2a fc 90 <0f> 0b 48 89 df e8 97 8d 0a fd 48 c7 c7 20 04 81 8c 4c 89 fe 48 89 RSP: 0018:ffffc900040dfa28 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000100 RCX: dfdfec6995d0c700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88802fe28e20 R08: ffffffff81a146fc R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: dead000000000122 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88802fe28e00 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30414ff8 CR3: 000000004d548000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del include/linux/list.h:229 [inline] _hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:647 [inline] hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:851 [inline] hci_cmd_sync_dequeue_once+0x262/0x360 net/bluetooth/hci_sync.c:870 hci_cancel_connect_sync+0xc3/0x120 hci_abort_conn+0x194/0x330 net/bluetooth/hci_conn.c:3060 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd30 kernel/workqueue.c:3400 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x10f/0x190 lib/list_debug.c:56 Code: 60 03 81 8c 4c 89 fe e8 ef 53 2a fc 90 0f 0b 48 89 df e8 b4 8d 0a fd 48 c7 c7 c0 03 81 8c 4c 89 fe 48 89 da e8 d2 53 2a fc 90 <0f> 0b 48 89 df e8 97 8d 0a fd 48 c7 c7 20 04 81 8c 4c 89 fe 48 89 RSP: 0018:ffffc900040dfa28 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000100 RCX: dfdfec6995d0c700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88802fe28e20 R08: ffffffff81a146fc R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: dead000000000122 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88802fe28e00 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30414ff8 CR3: 000000004d548000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400