non-paged memory list_del corruption, ffff888063feb180->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:58! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5849 Comm: kworker/u9:3 Not tainted 6.16.0-rc1-next-20250611-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: hci4 hci_conn_timeout RIP: 0010:__list_del_entry_valid_or_report+0x10e/0x190 lib/list_debug.c:56 Code: 20 e6 e2 8b 48 89 de e8 80 c4 5e fc 90 0f 0b 4c 89 e7 e8 45 60 3a fd 48 c7 c7 80 e6 e2 8b 48 89 de 4c 89 e2 e8 63 c4 5e fc 90 <0f> 0b 4c 89 e7 e8 28 60 3a fd 48 c7 c7 e0 e6 e2 8b 48 89 de 4c 89 RSP: 0018:ffffc9000451f980 EFLAGS: 00010246 RAX: 000000000000004e RBX: ffff888063feb180 RCX: 2ba773de1b1f9800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffffff8a775e80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa0c R12: dead000000000100 R13: dffffc0000000000 R14: dead000000000100 R15: dead000000000122 FS: 0000000000000000(0000) GS:ffff888125c45000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff1aa03ff7c CR3: 0000000066b96000 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+0x24a/0x370 net/bluetooth/hci_sync.c:870 hci_cancel_connect_sync+0xc8/0x120 net/bluetooth/hci_sync.c:-1 hci_abort_conn+0x191/0x330 net/bluetooth/hci_conn.c:2919 process_one_work kernel/workqueue.c:3235 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3318 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3399 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x10e/0x190 lib/list_debug.c:56 Code: 20 e6 e2 8b 48 89 de e8 80 c4 5e fc 90 0f 0b 4c 89 e7 e8 45 60 3a fd 48 c7 c7 80 e6 e2 8b 48 89 de 4c 89 e2 e8 63 c4 5e fc 90 <0f> 0b 4c 89 e7 e8 28 60 3a fd 48 c7 c7 e0 e6 e2 8b 48 89 de 4c 89 RSP: 0018:ffffc9000451f980 EFLAGS: 00010246 RAX: 000000000000004e RBX: ffff888063feb180 RCX: 2ba773de1b1f9800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffffff8a775e80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa0c R12: dead000000000100 R13: dffffc0000000000 R14: dead000000000100 R15: dead000000000122 FS: 0000000000000000(0000) GS:ffff888125d45000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b48207000 CR3: 0000000066b96000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400