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selftests/arm64: Log errors in verify_mte_pointer_validity()

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When we detect a problem in verify_mte_pointer_validity() while checking
tags we don't log what the problem was which makes debugging harder. Add
some diagnostics.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220510164520.768783-2-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2022-05-10 17:45:16 +01:00 committed by Catalin Marinas
parent ae60e0763e
commit 9a56817107
1 changed files with 9 additions and 3 deletions
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12
tools/testing/selftests/arm64/mte/check_tags_inclusion.c
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@ -25,8 +25,11 @@ static int verify_mte_pointer_validity(char *ptr, int mode)
/* Check the validity of the tagged pointer */
memset((void *)ptr, '1', BUFFER_SIZE);
mte_wait_after_trig();
if (cur_mte_cxt.fault_valid)
if (cur_mte_cxt.fault_valid) {
ksft_print_msg("Unexpected fault recorded for %p-%p in mode %x\n",
ptr, ptr + BUFFER_SIZE, mode);
return KSFT_FAIL;
}
/* Proceed further for nonzero tags */
if (!MT_FETCH_TAG((uintptr_t)ptr))
return KSFT_PASS;
@ -34,10 +37,13 @@ static int verify_mte_pointer_validity(char *ptr, int mode)
/* Check the validity outside the range */
ptr[BUFFER_SIZE] = '2';
mte_wait_after_trig();
if (!cur_mte_cxt.fault_valid)
if (!cur_mte_cxt.fault_valid) {
ksft_print_msg("No valid fault recorded for %p in mode %x\n",
ptr, mode);
return KSFT_FAIL;
else
} else {
return KSFT_PASS;
}
}
static int check_single_included_tags(int mem_type, int mode)