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authorChen Gang <gang.chen@asianux.com>2013-02-25 16:51:49 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-03-05 16:56:27 +1100
commit6b6680c4ea3952af8ae76915cbca41245147741b (patch)
tree3863f55ebb6a7f1c49830337c7a8aa52443c54a8 /arch
parent27777890d0fae55d14ef18791fc7994faf1bc867 (diff)
downloadvexpress-lsk-6b6680c4ea3952af8ae76915cbca41245147741b.tar.gz
powerpc/pseries/hvcserver: Fix strncpy buffer limit in location code
the dest buf len is 80 (HVCS_CLC_LENGTH + 1). the src buf len is PAGE_SIZE. if src buf string len is more than 80, it will cause issue. Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/platforms/pseries/hvcserver.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/hvcserver.c b/arch/powerpc/platforms/pseries/hvcserver.c
index fcf4b4cbeaf..4557e91626c 100644
--- a/arch/powerpc/platforms/pseries/hvcserver.c
+++ b/arch/powerpc/platforms/pseries/hvcserver.c
@@ -23,6 +23,7 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/string.h>
#include <asm/hvcall.h>
#include <asm/hvcserver.h>
@@ -188,9 +189,9 @@ int hvcs_get_partner_info(uint32_t unit_address, struct list_head *head,
= (unsigned int)last_p_partition_ID;
/* copy the Null-term char too */
- strncpy(&next_partner_info->location_code[0],
+ strlcpy(&next_partner_info->location_code[0],
(char *)&pi_buff[2],
- strlen((char *)&pi_buff[2]) + 1);
+ sizeof(next_partner_info->location_code));
list_add_tail(&(next_partner_info->node), head);
next_partner_info = NULL;