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Commit c735483d authored by Helge Deller's avatar Helge Deller
Browse files

parisc: pdc_stable.c: Avoid potential stack overflows 



Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 94c457de

drivers/parisc/pdc_stable.c

+7 −5
Original line number Diff line number Diff line
@@ -278,7 +278,7 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun 
{

	struct hardware_path hwpath;

	unsigned short i;

	char in[count+1], *temp;

	char in[64], *temp;

	struct device *dev;

	int ret;
@@ -286,8 +286,9 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun 
		return -EINVAL;



	/* We'll use a local copy of buf */

	memset(in, 0, count+1);

	count = min_t(size_t, count, sizeof(in)-1);

	strncpy(in, buf, count);

	in[count] = '\0';

	

	/* Let's clean up the target. 0xff is a blank pattern */

	memset(&hwpath, 0xff, sizeof(hwpath));
@@ -393,14 +394,15 @@ pdcspath_layer_write(struct pdcspath_entry *entry, const char *buf, size_t count 
{

	unsigned int layers[6]; /* device-specific info (ctlr#, unit#, ...) */

	unsigned short i;

	char in[count+1], *temp;

	char in[64], *temp;



	if (!entry || !buf || !count)

		return -EINVAL;



	/* We'll use a local copy of buf */

	memset(in, 0, count+1);

	count = min_t(size_t, count, sizeof(in)-1);

	strncpy(in, buf, count);

	in[count] = '\0';

	

	/* Let's clean up the target. 0 is a blank pattern */

	memset(&layers, 0, sizeof(layers));
@@ -765,7 +767,7 @@ static ssize_t pdcs_auto_write(struct kobject *kobj, 
		return -EINVAL;



	/* We'll use a local copy of buf */

	count = min_t(size_t, count, 7);

	count = min_t(size_t, count, sizeof(in)-1);

	strncpy(in, buf, count);

	in[count] = '\0';