Hello, syzbot found the following issue on: HEAD commit: b0546776ad3f Merge tag 'printk-for-6.9' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15bf5b99180000 kernel config: https://syzkaller.appspot.com/x/.config?x=4ae24324b37fdefe dashboard link: https://syzkaller.appspot.com/bug?extid=3272785b7a1fc9b510f6 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-b0546776.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a07801fab32c/vmlinux-b0546776.xz kernel image: https://storage.googleapis.com/syzbot-assets/0696c91a7e74/bzImage-b0546776.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3272785b7a1fc9b510f6@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9 at kernel/workqueue.c:2322 __queue_work+0xc44/0x1170 kernel/workqueue.c:2321 Modules linked in: CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.8.0-syzkaller-05292-gb0546776ad3f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: events l2cap_chan_timeout RIP: 0010:__queue_work+0xc44/0x1170 kernel/workqueue.c:2321 Code: 38 d0 7c 09 84 d2 74 05 e8 89 f6 8f 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 5a 64 34 00 85 db 0f 85 fe 00 00 00 e8 6d 69 34 00 90 <0f> 0b 90 e9 1c f9 ff ff e8 5f 69 34 00 90 0f 0b 90 e9 cb f8 ff ff RSP: 0018:ffffc900003b7ab8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffff888014c94000 RCX: ffffffff815ae3ea RDX: ffff888015704880 RSI: ffffffff815928d3 RDI: ffff888014c94008 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000200000 R11: 0000000000000004 R12: ffff88801f8648c0 R13: 0000000000000008 R14: ffff88801f8648c8 R15: ffff88804bf9e000 FS: 0000000000000000(0000) GS:ffff88802c200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000030e25000 CR3: 00000000277b0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __queue_delayed_work+0x21b/0x2e0 kernel/workqueue.c:2551 queue_delayed_work_on+0x10e/0x130 kernel/workqueue.c:2595 queue_delayed_work include/linux/workqueue.h:620 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1621 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1591 [inline] l2cap_chan_del+0x5a3/0x930 net/bluetooth/l2cap_core.c:647 l2cap_chan_close+0xff/0xa30 net/bluetooth/l2cap_core.c:820 l2cap_chan_timeout+0x17d/0x2f0 net/bluetooth/l2cap_core.c:432 process_one_work+0x902/0x19d0 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 </TASK> --- 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
