On Tue, Aug 29, 2006 at 01:16:22PM +0200, Andi Kleen wrote:
>
> >
> > Without a hex dump of stack contents there's very little I can do.
>
> Borislav, if you can reproduce the crash please boot with kstack=2048 and send output
> of that.
Yeah,
that's a no-go, same output:
<snip>
Aug 29 14:34:08 zmei kernel: [ 34.329932] Kernel command line: root=/dev/hda1 vga=0 console=ttyS0,115200 console=tty0 kstack=2048
...
Aug 29 14:45:09 zmei kernel: [ 689.179264]
Aug 29 14:45:10 zmei kernel: [ 689.179267] =============================================
Aug 29 14:45:10 zmei kernel: [ 689.186226] [ INFO: possible recursive locking detected ]
Aug 29 14:45:10 zmei kernel: [ 689.191654] ---------------------------------------------
Aug 29 14:45:10 zmei kernel: [ 689.197076] swapper/0 is trying to acquire lock:
Aug 29 14:45:10 zmei kernel: [ 689.201720] (&q->lock){++..}, at: [<c01126d5>] __wake_up+0x15/0x3b
Aug 29 14:45:10 zmei kernel: [ 689.208222]
Aug 29 14:45:10 zmei kernel: [ 689.208223] but task is already holding lock:
Aug 29 14:45:10 zmei kernel: [ 689.214136] (&q->lock){++..}, at: [<c01126d5>] __wake_up+0x15/0x3b
Aug 29 14:45:10 zmei kernel: [ 689.220629]
Aug 29 14:45:10 zmei kernel: [ 689.220631] other info that might help us debug this:
Aug 29 14:45:10 zmei kernel: [ 689.227235] 4 locks held by swapper/0:
Aug 29 14:45:10 zmei kernel: [ 689.231013] #0: (&tp->rx_lock){-+..}, at: [<c0208de1>] rtl8139_poll+0x42/0x405
Aug 29 14:45:10 zmei kernel: [ 689.238691] #1: (slock-AF_INET/1){-+..}, at: [<c02a1d91>] tcp_v4_rcv+0x40c/0x8b3
Aug 29 14:45:10 zmei kernel: [ 689.246594] #2: (af_callback_keys + sk->sk_family#3){-.-?}, at: [<c0271969>] sock_def_readable+0x15/0x69
Aug 29 14:45:10 zmei kernel: [ 689.256572] #3: (&q->lock){++..}, at: [<c01126d5>] __wake_up+0x15/0x3b
Aug 29 14:45:10 zmei kernel: [ 689.263549]
Aug 29 14:45:10 zmei kernel: [ 689.263550] stack backtrace:
Aug 29 14:45:10 zmei kernel: [ 689.268086] [<c0103ba6>] show_trace_log_lvl+0x58/0x152
Aug 29 14:45:10 zmei kernel: [ 689.273401] [<c0104234>] show_trace+0xd/0x10
Aug 29 14:45:10 zmei kernel: [ 689.277854] [<c01042fc>] dump_stack+0x19/0x1b
Aug 29 14:45:10 zmei kernel: [ 689.282393] [<c012eb73>] __lock_acquire+0x74b/0x967
Aug 29 14:45:10 zmei kernel: [ 689.287516] [<c012f2d2>] lock_acquire+0x4b/0x6d
Aug 29 14:45:10 zmei kernel: [ 689.292289] [<c02b8981>] _spin_lock_irqsave+0x2c/0x3c
Aug 29 14:45:10 zmei kernel: [ 689.297587] [<c01126d5>] __wake_up+0x15/0x3b
Aug 29 14:45:10 zmei kernel: [ 689.302068] [<c01752f0>] ep_poll_safewake+0x91/0xc3
Aug 29 14:45:10 zmei kernel: [ 689.307278] [<c0175c7f>] ep_poll_callback+0x83/0x8d
Aug 29 14:45:10 zmei kernel: [ 689.312482] [<c0111a6d>] __wake_up_common+0x2f/0x53
Aug 29 14:45:10 zmei kernel: [ 689.317568] [<c01126e8>] __wake_up+0x28/0x3b
Aug 29 14:45:10 zmei kernel: [ 689.322048] [<c027198e>] sock_def_readable+0x3a/0x69
Aug 29 14:45:10 zmei kernel: [ 689.327646] [<c029a9ff>] tcp_rcv_established+0x3ca/0x64f
Aug 29 14:45:10 zmei kernel: [ 689.333601] [<c029fd6a>] tcp_v4_do_rcv+0x26/0x2df
Aug 29 14:45:10 zmei kernel: [ 689.338932] [<c02a21d1>] tcp_v4_rcv+0x84c/0x8b3
Aug 29 14:45:10 zmei kernel: [ 689.344121] [<c028a470>] ip_local_deliver+0x134/0x1cc
Aug 29 14:45:10 zmei kernel: [ 689.349813] [<c028a300>] ip_rcv+0x425/0x461
Aug 29 14:45:10 zmei kernel: [ 689.354638] [<c027719b>] netif_receive_skb+0x19a/0x22d
Aug 29 14:45:10 zmei kernel: [ 689.360394] [<c0209036>] rtl8139_poll+0x297/0x405
Aug 29 14:45:10 zmei kernel: [ 689.365594] [<c0278b13>] net_rx_action+0x76/0x109
Aug 29 14:45:10 zmei kernel: [ 689.370900] [<c011d5f2>] __do_softirq+0x70/0xf0
Aug 29 14:45:10 zmei kernel: [ 689.375648] [<c010526b>] do_softirq+0x61/0xc6
Aug 29 14:45:10 zmei kernel: [ 689.380185] [<c011d575>] irq_exit+0x49/0x56
Aug 29 14:45:10 zmei kernel: [ 689.384591] [<c0105393>] do_IRQ+0xc3/0xd0
Aug 29 14:45:10 zmei kernel: [ 689.388778] [<c0103521>] common_interrupt+0x25/0x2c
Aug 29 14:45:10 zmei kernel: [ 689.393832] DWARF2 unwinder stuck at common_interrupt+0x25/0x2c
Aug 29 14:45:10 zmei kernel: [ 689.399774] Leftover inexact backtrace:
<EOF>
Regards,
Boris.
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