Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 02/72] selftests: x86: fix [-Wstringop-overread] warn in test_process_vm_readv() | Date | Mon, 10 Jan 2022 08:22:39 +0100 |
| |
From: Shuah Khan <skhan@linuxfoundation.org>
commit dd40f44eabe1e122c6852fabb298aac05b083fce upstream.
Fix the following [-Wstringop-overread] by passing in the variable instead of the value.
test_vsyscall.c: In function ‘test_process_vm_readv’: test_vsyscall.c:500:22: warning: ‘__builtin_memcmp_eq’ specified bound 4096 exceeds source size 0 [-Wstringop-overread] 500 | if (!memcmp(buf, (const void *)0xffffffffff600000, 4096)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Cc: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- tools/testing/selftests/x86/test_vsyscall.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/x86/test_vsyscall.c +++ b/tools/testing/selftests/x86/test_vsyscall.c @@ -497,7 +497,7 @@ static int test_process_vm_readv(void) } if (vsyscall_map_r) { - if (!memcmp(buf, (const void *)0xffffffffff600000, 4096)) { + if (!memcmp(buf, remote.iov_base, sizeof(buf))) { printf("[OK]\tIt worked and read correct data\n"); } else { printf("[FAIL]\tIt worked but returned incorrect data\n");
| |