Re: [PATCH 1/1] selftest mm/mseal: fix compile warning

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On 4/19/24 8:43 AM, jeffxu@xxxxxxxxxxxx wrote:
> From: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> 
> fix compile warning reported by test robot
> 
> Signed-off-by: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> Reported-by: kernel test robot <yujie.liu@xxxxxxxxx>
> Closes: https://lore.kernel.org/r/202404190226.OfJOewV8-lkp@xxxxxxxxx/
Reviewed-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>

> ---
>  tools/testing/selftests/mm/mseal_test.c | 3 +--
>  tools/testing/selftests/mm/seal_elf.c   | 3 +--
>  2 files changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c
> index 4a326334726d..35cdae93e580 100644
> --- a/tools/testing/selftests/mm/mseal_test.c
> +++ b/tools/testing/selftests/mm/mseal_test.c
> @@ -79,7 +79,7 @@ static unsigned long get_vma_size(void *addr, int *prot)
>  		return 0;
>  
>  	while (fgets(line, sizeof(line), maps)) {
> -		if (sscanf(line, "%lx-%lx %4s", &addr_start, &addr_end, &protstr) == 3) {
> +		if (sscanf(line, "%lx-%lx %4s", &addr_start, &addr_end, (char *) &protstr) == 3) {
>  			if (addr_start == (uintptr_t) addr) {
>  				size = addr_end - addr_start;
>  				if (protstr[0] == 'r')
> @@ -208,7 +208,6 @@ static u64 set_pkey_bits(u64 reg, int pkey, u64 flags)
>  
>  static void set_pkey(int pkey, unsigned long pkey_value)
>  {
> -	unsigned long mask = (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE);
>  	u64 new_pkey_reg;
>  
>  	new_pkey_reg = set_pkey_bits(__read_pkey_reg(), pkey, pkey_value);
> diff --git a/tools/testing/selftests/mm/seal_elf.c b/tools/testing/selftests/mm/seal_elf.c
> index 7143dc4f1b10..b7e72f9804f8 100644
> --- a/tools/testing/selftests/mm/seal_elf.c
> +++ b/tools/testing/selftests/mm/seal_elf.c
> @@ -105,7 +105,6 @@ static void test_seal_elf(void)
>  	int ret;
>  	FILE *maps;
>  	char line[512];
> -	int size = 0;
>  	uintptr_t  addr_start, addr_end;
>  	char prot[5];
>  	char filename[256];
> @@ -136,7 +135,7 @@ static void test_seal_elf(void)
>  	 */
>  	while (fgets(line, sizeof(line), maps)) {
>  		if (sscanf(line, "%lx-%lx %4s %*x %*x:%*x %*u %255[^\n]",
> -			&addr_start, &addr_end, &prot, &filename) == 4) {
> +			&addr_start, &addr_end, (char *)&prot, (char *)&filename) == 4) {
>  			if (strlen(filename)) {
>  				/*
>  				 * seal the mapping if read only.

-- 
BR,
Muhammad Usama Anjum




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