what is signal 12?

Anton Shterenlikht mexas at bristol.ac.uk
Mon Apr 26 15:59:58 UTC 2010


On Mon, Apr 26, 2010 at 11:47:53AM -0400, Jerry wrote:
> On Mon, 26 Apr 2010 16:36:00 +0100
> Anton <mexas at bristol.ac.uk> articulated:
> 
> > Hi
> > 
> > I have an app which exits on signal 12.
> > What is this signal?
> > I can't find any reference to in the man
> > pages or on the net.
> 
> Is this what you are looking for:
> 
> $ man signal | grep -i 12
> 12    SIGSYS	create core image    non-existent system call invoked

yes, thank you.

Would you also know what this mean then:

Apr 26 16:37:45 mech-as28 kernel: pid 33752 (syscall), uid 1001: exited on signal 12
Apr 26 16:37:45 mech-as28 kernel: pid 33757 (syscall), uid 1001: exited on signal 12
Apr 26 16:37:45 mech-as28 kernel: pid 33751 (syscall), uid 1001: exited on signal 12

Does this mean that the program, syscall in this case,
tried to invoke a system call which doesn't exist?

Could this be because I'm running it on ia64, whereas it's
likely to have been written for i386/amd64?

Just to clarify, I'm running stress2:
	http://people.freebsd.org/~pho/stress/

on ia64 -current box.

many thanks
anton

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423


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