Re: [LTP] [PATCH] pthread_detach/4-3: workaround for segment fault

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> From: "Kang Kai" <Kai.Kang@windriver.com>
> To: "Jan Stancek" <jstancek@redhat.com>
> Cc: gaowanlong@cn.fujitsu.com, ltp-list@lists.sourceforge.net, "Zhenfeng Zhao" <Zhenfeng.Zhao@windriver.com>
> Sent: Tuesday, 21 August, 2012 11:59:19 AM
> Subject: Re: [LTP] [PATCH] pthread_detach/4-3: workaround for segment fault

<snip>

> Hi Jan,
> 
> Thanks.
> I am sorry that It doesn't work and still "segment fault".

Maybe we can narrow it down by running only subset of scenarios.
I would suggest trying to limit "sc" or "NSCENAR" and see which
one triggers it.

Another thing that looks suspicious are scenarios with altstack, there seems
to be small window where more than 1 thread can use same altstack.
Can you try to reproduce it without altstack scenarios?

diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-3.c b/testcases/open_posix_testsuite/conforman
index 5c15e93..63b6ee7 100644
--- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-3.c
+++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_detach/4-3.c
@@ -162,6 +162,11 @@ static void *test(void *arg)
                output("Starting test with scenario (%i): %s\n",
                       sc, scenarii[sc].descr);
 #endif
+               if (scenarii[sc].altstack) {
+                       sc++;
+                       sc %= NSCENAR;
+                       continue;
+               }
 
                count_ope++;


Regards,
Jan

> 
> Regards,
> Kai
> 


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