Hello, After using "Lock debugging: prove locking correctness" with the Kernel I got this warning:
================================= [ INFO: inconsistent lock state ] 2.6.24-dg8ngn-p02 #1 --------------------------------- inconsistent {softirq-on-W} -> {in-softirq-R} usage. linuxnet/3046 [HC0[0]:SC1[2]:HE1:SE0] takes: (ax25_route_lock){--.+}, at: [<f8a0cfb7>] ax25_get_route+0x18/0xb7 [ax25] {softirq-on-W} state was registered at: [<c013a340>] __lock_acquire+0x464/0xb7b [<c01398d8>] mark_held_locks+0x39/0x53 [<c0124d35>] local_bh_enable_ip+0xcd/0xd5 [<c0139aaf>] trace_hardirqs_on+0x11a/0x13d [<c013ae58>] lock_acquire+0x5f/0x77 [<f8a0d381>] ax25_rt_ioctl+0x66/0x325 [ax25] [<c0299ce7>] _write_lock+0x29/0x34 [<f8a0d381>] ax25_rt_ioctl+0x66/0x325 [ax25] [<f8a0d381>] ax25_rt_ioctl+0x66/0x325 [ax25] [<f8a0f699>] ax25_ioctl+0x1b6/0x5b8 [ax25] [<c0161280>] fd_install+0x1e/0x46 [<c0299c7a>] _spin_lock+0x29/0x34 [<c022e75d>] sock_ioctl+0x1bb/0x1e0 [<c022e5a2>] sock_ioctl+0x0/0x1e0 [<c016c76f>] do_ioctl+0x1f/0x62 [<c016c9d2>] vfs_ioctl+0x220/0x232 [<c0139aaf>] trace_hardirqs_on+0x11a/0x13d [<c016ca17>] sys_ioctl+0x33/0x4c [<c0103ea2>] syscall_call+0x7/0xb [<ffffffff>] 0xffffffff irq event stamp: 120000 hardirqs last enabled at (120000): [<c0124d35>] local_bh_enable_ip+0xcd/0xd5 hardirqs last disabled at (119999): [<c0124cc3>] local_bh_enable_ip+0x5b/0xd5 softirqs last enabled at (119892): [<f89fd53d>] mkiss_receive_buf+0x2a5/0x394 [mkiss] softirqs last disabled at (119893): [<c01249f0>] do_softirq+0x37/0x4d other info that might help us debug this: 5 locks held by linuxnet/3046: #0: (&tty->atomic_write_lock){--..}, at: [<c01ded5e>] tty_write_lock+0x11/0x37 #1: (rcu_read_lock){..--}, at: [<c023a8d2>] net_rx_action+0x4e/0x1c4 #2: (rcu_read_lock){..--}, at: [<c0238579>] netif_receive_skb+0xe6/0x3d6 #3: (rcu_read_lock){..--}, at: [<c025549d>] ip_local_deliver_finish+0x2d/0x1f7 #4: (slock-AF_INET){-+..}, at: [<c0274e43>] icmp_send+0x10e/0x37a stack backtrace: Pid: 3046, comm: linuxnet Not tainted 2.6.24-dg8ngn-p02 #1 [<c0138e13>] print_usage_bug+0x138/0x142 [<c013961f>] mark_lock+0x1ca/0x44a [<c013a2d9>] __lock_acquire+0x3fd/0xb7b [<c01398d8>] mark_held_locks+0x39/0x53 [<c0124d35>] local_bh_enable_ip+0xcd/0xd5 [<c013ae58>] lock_acquire+0x5f/0x77 [<f8a0cfb7>] ax25_get_route+0x18/0xb7 [ax25] [<c0299dc7>] _read_lock+0x29/0x34 [<f8a0cfb7>] ax25_get_route+0x18/0xb7 [ax25] [<f8a0cfb7>] ax25_get_route+0x18/0xb7 [ax25] [<f89fda29>] ax_header+0x0/0x1a [mkiss] [<f8a0c3f6>] ax25_rebuild_header+0x30/0x202 [ax25] [<f89fda29>] ax_header+0x0/0x1a [mkiss] [<c023f90c>] neigh_compat_output+0x7b/0x97 [<c0258bd6>] ip_finish_output+0x1da/0x204 [<c0259a26>] ip_output+0x74/0x89 [<c0257831>] ip_push_pending_frames+0x2d8/0x33a [<c025742c>] dst_output+0x0/0x7 [<c0275039>] icmp_send+0x304/0x37a [<c013a353>] __lock_acquire+0x477/0xb7b [<c0270c05>] __udp4_lib_lookup+0xec/0xf6 [<c0271a48>] __udp4_lib_rcv+0x586/0x771 [<c02555ae>] ip_local_deliver_finish+0x13e/0x1f7 [<c025549d>] ip_local_deliver_finish+0x2d/0x1f7 [<c0255451>] ip_rcv_finish+0x2c1/0x2e0 [<c025591c>] ip_rcv+0x1f0/0x22b [<c0255190>] ip_rcv_finish+0x0/0x2e0 [<c0238808>] netif_receive_skb+0x375/0x3d6 [<c0238579>] netif_receive_skb+0xe6/0x3d6 [<c023adc4>] process_backlog+0x6c/0xcd [<c023a940>] net_rx_action+0xbc/0x1c4 [<c023a8d2>] net_rx_action+0x4e/0x1c4 [<c0124944>] __do_softirq+0x69/0xde [<f89fd53d>] mkiss_receive_buf+0x2a5/0x394 [mkiss] [<c01249f0>] do_softirq+0x37/0x4d [<c0124d15>] local_bh_enable_ip+0xad/0xd5 [<f89fd53d>] mkiss_receive_buf+0x2a5/0x394 [mkiss] [<c029a042>] _spin_unlock_irqrestore+0x34/0x39 [<c01e3233>] pty_write+0x2f/0x39 [<c01e1233>] write_chan+0x22d/0x2a1 [<c01191e7>] default_wake_function+0x0/0x8 [<c01def37>] tty_write+0x14d/0x1c2 [<c01e1006>] write_chan+0x0/0x2a1 [<c01dedea>] tty_write+0x0/0x1c2 [<c0162f28>] vfs_write+0x8a/0x10c [<c01634a4>] sys_write+0x41/0x67 [<c0103ea2>] syscall_call+0x7/0xb ======================= -- Jann Traschewski, Drosselstr.1, D-90513 Zirndorf, Germany Tel.: +49-911-696971, Mobile: +49-170-1045937, EMail: [EMAIL PROTECTED] Ham: DG8NGN / DB0VOX, http://www.qsl.net/db0fhn, ICQ UIN: 4130182 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html