Hello, syzbot found the following issue on: HEAD commit: c6653f49e4fd Merge tag 'powerpc-6.10-4' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=170a1059980000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ace69f521989b1f dashboard link: https://syzkaller.appspot.com/bug?extid=733a96463546d3026b60 compiler: Debian clang version 15.0.6, 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/a56f9eb616fa/disk-c6653f49.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2f09515c2f1b/vmlinux-c6653f49.xz kernel image: https://storage.googleapis.com/syzbot-assets/fdc471b5cbac/bzImage-c6653f49.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+733a96463546d3026b60@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: workqueue leaked atomic, lock or RCU: kworker/u9:0[53] preempt=0x00000000 lock=0->1 RCU=0->0 workfn=hci_rx_work 1 lock held by kworker/u9:0/53: #0: ffff88802f56d518 (&chan->lock/1){+.+.}-{3:3}, at: l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline] #0: ffff88802f56d518 (&chan->lock/1){+.+.}-{3:3}, at: l2cap_conless_channel net/bluetooth/l2cap_core.c:6764 [inline] #0: ffff88802f56d518 (&chan->lock/1){+.+.}-{3:3}, at: l2cap_recv_frame+0x7ca/0x10830 net/bluetooth/l2cap_core.c:6830 CPU: 1 PID: 53 Comm: kworker/u9:0 Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: hci1 hci_rx_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 process_one_work kernel/workqueue.c:3269 [inline] process_scheduled_works+0x1121/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </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
