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arm64: Fix MINSIGSTKSZ and SIGSTKSZ

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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

Reported Issue in Glibc Bugzilla:
Bugfix in Glibc-2.22: [Bug 16850]
https://sourceware.org/bugzilla/show_bug.cgi?id=16850

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Manjeet Pawar <manjeet.p@samsung.com>
Signed-off-by: Rohit Thapliyal <r.thapliyal@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Manjeet Pawar 2015-10-09 15:59:40 +05:30 committed by Will Deacon
parent b6dd8e0719
commit c9692657c0
2 changed files with 5 additions and 0 deletions
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3
arch/arm64/include/uapi/asm/signal.h
View file

@ -19,6 +19,9 @@
/* Required for AArch32 compatibility. */
#define SA_RESTORER 0x04000000
#define MINSIGSTKSZ 5120
#define SIGSTKSZ 16384
#include <asm-generic/signal.h>
#endif

2
include/uapi/asm-generic/signal.h
View file

@ -80,8 +80,10 @@
* SA_RESTORER 0x04000000
*/
#if !defined MINSIGSTKSZ || !defined SIGSTKSZ
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#endif
#ifndef __ASSEMBLY__
typedef struct {