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linux-kselftest-fixes-6.3-rc5

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This Kselftest fixes update for Linux 6.3-rc5 consists of one single
 fix for sigaltstack test -Wuninitialized warning found when building
 with clang.
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Merge tag 'linux-kselftest-fixes-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "One single fix for sigaltstack test -Wuninitialized warning found when
  building with clang"

* tag 'linux-kselftest-fixes-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: sigaltstack: fix -Wuninitialized
This commit is contained in:
Linus Torvalds 2023-03-28 13:14:47 -07:00
commit 756c1a0593
2 changed files with 24 additions and 6 deletions
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23
tools/testing/selftests/sigaltstack/current_stack_pointer.h Normal file
View File

@ -0,0 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0 */
#if __alpha__
register unsigned long sp asm("$30");
#elif __arm__ || __aarch64__ || __csky__ || __m68k__ || __mips__ || __riscv
register unsigned long sp asm("sp");
#elif __i386__
register unsigned long sp asm("esp");
#elif __loongarch64
register unsigned long sp asm("$sp");
#elif __ppc__
register unsigned long sp asm("r1");
#elif __s390x__
register unsigned long sp asm("%15");
#elif __sh__
register unsigned long sp asm("r15");
#elif __x86_64__
register unsigned long sp asm("rsp");
#elif __XTENSA__
register unsigned long sp asm("a1");
#else
#error "implement current_stack_pointer equivalent"
#endif

7
tools/testing/selftests/sigaltstack/sas.c
View File

@ -20,6 +20,7 @@
#include <sys/auxv.h>
#include "../kselftest.h"
#include "current_stack_pointer.h"
#ifndef SS_AUTODISARM
#define SS_AUTODISARM (1U << 31)
@ -46,12 +47,6 @@ void my_usr1(int sig, siginfo_t *si, void *u)
stack_t stk;
struct stk_data *p;
#if __s390x__
register unsigned long sp asm("%15");
#else
register unsigned long sp asm("sp");
#endif
if (sp < (unsigned long)sstack ||
sp >= (unsigned long)sstack + stack_size) {
ksft_exit_fail_msg("SP is not on sigaltstack\n");