Commit e8d3974f authored by Joey Gouly's avatar Joey Gouly Committed by Will Deacon
Browse files

kselftest/arm64: mte: user_mem: add more test types 



To expand the test coverage for MTE tags in userspace memory,
also perform the test with `write`, `readv` and `writev` syscalls.

Signed-off-by: default avatarJoey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Reviewed-by: default avatarMark Brown <broonie@kernel.org>
Tested-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220209152240.52788-6-joey.gouly@arm.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent b9fc7001

tools/testing/selftests/arm64/mte/check_user_mem.c

+21 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <string.h>

#include <ucontext.h>

#include <unistd.h>

#include <sys/uio.h>

#include <sys/mman.h>



#include "kselftest.h"
@@ -21,6 +22,9 @@ static size_t page_sz; 


enum test_type {

	READ_TEST,

	WRITE_TEST,

	READV_TEST,

	WRITEV_TEST,

	LAST_TEST,

};
@@ -81,6 +85,23 @@ static int check_usermem_access_fault(int mem_type, int mode, int mapping, 
				case READ_TEST:

					syscall_len = read(fd, ptr + ptroff, size);

					break;

				case WRITE_TEST:

					syscall_len = write(fd, ptr + ptroff, size);

					break;

				case READV_TEST: {

					struct iovec iov[1];

					iov[0].iov_base = ptr + ptroff;

					iov[0].iov_len = size;

					syscall_len = readv(fd, iov, 1);

					break;

				}

				case WRITEV_TEST: {

					struct iovec iov[1];

					iov[0].iov_base = ptr + ptroff;

					iov[0].iov_len = size;

					syscall_len = writev(fd, iov, 1);

					break;

				}

				case LAST_TEST:

					goto usermem_acc_err;

				}