Hello, syzbot found the following issue on: HEAD commit: a430d95c5efa Merge tag 'lsm-pr-20240911' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=136ba607980000 kernel config: https://syzkaller.appspot.com/x/.config?x=44d46e514184cd24 dashboard link: https://syzkaller.appspot.com/bug?extid=01fdb2cc3f0b4ddcfcf1 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/bdf130384fad/disk-a430d95c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c62ff195641a/vmlinux-a430d95c.xz kernel image: https://storage.googleapis.com/syzbot-assets/4069702199e2/bzImage-a430d95c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+01fdb2cc3f0b4ddcfcf1@xxxxxxxxxxxxxxxxxxxxxxxxx list_del corruption, ffff88801febb580->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:56! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 8278 Comm: kworker/u9:2 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: hci2 hci_conn_timeout RIP: 0010:__list_del_entry_valid_or_report+0x108/0x1c0 lib/list_debug.c:56 Code: c7 c7 80 1b b1 8b e8 c7 c6 dd fc 90 0f 0b 48 c7 c7 e0 1b b1 8b e8 b8 c6 dd fc 90 0f 0b 48 c7 c7 40 1c b1 8b e8 a9 c6 dd fc 90 <0f> 0b 48 89 ca 48 c7 c7 a0 1c b1 8b e8 97 c6 dd fc 90 0f 0b 48 89 RSP: 0018:ffffc90003a1fbe0 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff88801febb580 RCX: ffffffff816c6699 RDX: 0000000000000000 RSI: ffffffff816cf7b6 RDI: 0000000000000005 RBP: ffff88805f5a8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801febb588 R13: dffffc0000000000 R14: ffff88805f5a8618 R15: ffff88801febb580 FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202f5000 CR3: 0000000060a82000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __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.constprop.0+0x80/0x1d0 net/bluetooth/hci_sync.c:643 hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:847 [inline] hci_cmd_sync_dequeue_once net/bluetooth/hci_sync.c:866 [inline] hci_cancel_connect_sync+0x103/0x2c0 net/bluetooth/hci_sync.c:6844 hci_abort_conn+0x163/0x340 net/bluetooth/hci_conn.c:2948 hci_conn_timeout+0x1ab/0x220 net/bluetooth/hci_conn.c:576 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x108/0x1c0 lib/list_debug.c:56 Code: c7 c7 80 1b b1 8b e8 c7 c6 dd fc 90 0f 0b 48 c7 c7 e0 1b b1 8b e8 b8 c6 dd fc 90 0f 0b 48 c7 c7 40 1c b1 8b e8 a9 c6 dd fc 90 <0f> 0b 48 89 ca 48 c7 c7 a0 1c b1 8b e8 97 c6 dd fc 90 0f 0b 48 89 RSP: 0018:ffffc90003a1fbe0 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff88801febb580 RCX: ffffffff816c6699 RDX: 0000000000000000 RSI: ffffffff816cf7b6 RDI: 0000000000000005 RBP: ffff88805f5a8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801febb588 R13: dffffc0000000000 R14: ffff88805f5a8618 R15: ffff88801febb580 FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202f5000 CR3: 0000000060a82000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
