On Fri, Oct 03, 2014 at 11:35:33AM +0800, GP Orcullo wrote:
> The system managed to dump some error messages.
>
> [ 407.688809] INFO: rcu_preempt detected stalls on CPUs/tasks: { 3}
> (detected by 0, t=12002 jiffies, g=22447, c=22446, q=113448)
> [ 407.694560] Task dump for CPU 3:
> [ 407.697763] switchtest R running 0 3979 3640 0x00000002
> [ 407.704111] [<c0453ddc>] (__schedule+0x1fc/0x5f8) from [<00000010>] (0x10)
> [ 587.714458] INFO: rcu_preempt detected stalls on CPUs/tasks: { 3}
> (detected by 2, t=48007 jiffies, g=22447, c=22446, q=443504)
> [ 587.720205] Task dump for CPU 3:
> [ 587.723407] switchtest R running 0 3979 3640 0x00000002
> [ 587.729755] [<c0453ddc>] (__schedule+0x1fc/0x5f8) from [<00000010>] (0x10)
> [ 767.740128] INFO: rcu_preempt detected stalls on CPUs/tasks: { 3}
> (detected by 2, t=84012 jiffies, g=22447, c=22446, q=1136198)
> [ 767.745964] Task dump for CPU 3:
> [ 767.749167] switchtest R running 0 3979 3640 0x00000002
> [ 767.755515] [<c0453ddc>] (__schedule+0x1fc/0x5f8) from [<00000010>] (0x10)
> [ 782.763027] ------------[ cut here ]------------
> [ 782.763099] WARNING: at include/linux/ipipe_domain.h:212
> __ipipe_dispatch_irq+0x35c/0x5a0()
> [ 782.770380] Modules linked in: nfsv3 nfsv4 nfsd exportfs nfs_acl
> auth_rpcgss nfs lockd sunrpc vfat fat smsc95xx usbnet mii gpio_keys
> [ 782.782218] [<c0015624>] (unwind_backtrace+0x0/0xf8) from [<c0026118>]
> (warn_slowpath_common+0x4c/0x64)
> [ 782.791606] [<c0026118>] (warn_slowpath_common+0x4c/0x64) from
> [<c002614c>] (warn_slowpath_null+0x1c/0x24)
> [ 782.801232] [<c002614c>] (warn_slowpath_null+0x1c/0x24) from [<c00886ac>]
> (__ipipe_dispatch_irq+0x35c/0x5a0)
> [ 782.811035] [<c00886ac>] (__ipipe_dispatch_irq+0x35c/0x5a0) from
> [<c00200c8>] (combiner_handle_cascade_irq+0x80/0xf4)
> [ 782.821620] [<c00200c8>] (combiner_handle_cascade_irq+0x80/0xf4) from
> [<c0019110>] (__ipipe_ack_irq+0xc/0x10)
This is bad, can I see the code of the "combiner_handle_cascade_irq" function?
--
Gilles.
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