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Re: [Xen-ia64-devel] [Q]ltrace and do_ssc

from [Alex Williamson]

[Permanent Link][Original]

To:	Atsushi SAKAI <sakaia@xxxxxxxxxxxxxx>
Subject:	Re: [Xen-ia64-devel] [Q]ltrace and do_ssc
From:	Alex Williamson <alex.williamson@xxxxxx>
Date:	Tue, 28 Nov 2006 19:55:28 -0700
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On Wed, 2006-11-29 at 11:27 +0900, Atsushi SAKAI wrote:
> Hi, Alex
> 
>   I am trying "ltrace ps" on IA64.
> It makes dom0 hung.
> 
> >From the serial console messages,
> (XEN) ia64_handle_break: bad ssc code 400000000001c480, 
> iip=0x4000000000002140, 
> b0=0x4000000000002380... spinning
> 
> It seems come from following system call.
> 
> ia64_ssc@xxxxxxxxxxxxxxxxxxx/arch/ia64/hp/sim/hpsim.S
> 
> 
> Do you have any idea to solve this problem?

   I'd guess you happened to hit a break value that overlaps with the
ones chosen for trapping into ski.  You might try getting rid of the
first test in handle_break() that calls do_ssc().

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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[Xen-ia64-devel] [Q]ltrace and do_ssc, Atsushi SAKAI Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Akio Takebe Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Alex Williamson <= Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Atsushi SAKAI [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Atsushi SAKAI Re: [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Isaku Yamahata Re: [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Atsushi SAKAI Re: [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Alex Williamson Re: [PATCH] Check CPL for break 0x80001 case. Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Isaku Yamahata Re: [Xen-ia64-devel] [Q]ltrace and do_ssc, Isaku Yamahata

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