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selftests/mm: remove X permission from sigaltstack mapping

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There is no reason why the alternate signal stack should be mapped as RWX.
Map it as RW instead.

Link: https://lkml.kernel.org/r/20241209095019.1732120-15-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Keith Lucas <keith.lucas@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kevin Brodsky 2024-12-09 09:50:19 +00:00 committed by Andrew Morton
parent 1c6b1d4889
commit 08cc4c398e
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/mm/pkey_sighandler_tests.c
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@ -315,7 +315,7 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void)
sys_mprotect_pkey(stack, STACK_SIZE, PROT_READ | PROT_WRITE, pkey);
/* Set up alternate signal stack that will use the default MPK */
sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
sigstack.ss_flags = 0;
sigstack.ss_size = STACK_SIZE;
@ -488,7 +488,7 @@ static void test_pkru_sigreturn(void)
sys_mprotect_pkey(stack, STACK_SIZE, PROT_READ | PROT_WRITE, pkey);
/* Set up alternate signal stack that will use the default MPK */
sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
sigstack.ss_sp = mmap(0, STACK_SIZE, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
sigstack.ss_flags = 0;
sigstack.ss_size = STACK_SIZE;