linux-kernel - Re: Re: [PATCHv3] ARM64:Fix MINSIGSTKSZ and SIGSTKSZ

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Date:	Fri, 09 Oct 2015 10:57:40 +0000 (GMT)
From:	Manjeet Pawar <manjeet.p@...sung.com>
To:	Will Deacon <will.deacon@....com>
Cc:	"catalin.marinas@....com" <catalin.marinas@....com>,
	"arnd@...db.de" <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
	PANKAJ MISHRA <pankaj.m@...sung.com>,
	AKHILESH KUMAR <akhilesh.k@...sung.com>,
	Rohit Thapliyal <r.thapliyal@...sung.com>
Subject: Re: Re: [PATCHv3] ARM64:Fix MINSIGSTKSZ and SIGSTKSZ

>> MINSIGSTKSZ and SIGSTKSZ for ARM64 are not correctly set in latest kernel.
>> This patch fixes this issue.
>> 
>> This issue is reported in LTP (testcase: sigaltstack02.c).
>> Testcase failed when sigaltstack() called with stack size "MINSIGSTKSZ - 1"
>> Since in Glibc-2.22, MINSIGSTKSZ is set to 5120 but in kernel
>> it is set to 2048 so testcase gets failed.
>> 
>> Testcase Output:
>> sigaltstack02 1  TPASS  :  stgaltstack() fails, Invalid Flag value,errno:22
>> sigaltstack02 2  TFAIL  :  sigaltstack() returned 0, expected -1,errno:12

>I'm still unable to reproduce this failure. Is this with defconfig?

we used LTP testsuite (version : - 20140115) , 
compile LTP testsuite with arm64 toolchain (changes backported form Latest glibc 2.22)
Then this issue occur.