With `sizeof(lastcomm) - 1` strncpy() will null terminate the string.
Signed-off-by: Roel Kluin <[email protected]>
---
To test this:
#include <stdio.h>
#include <string.h>
char a[10];
char b[10];
int main()
{
const char* str = "0123456789012";
strncpy(a, str, sizeof(a));
strncpy(b, str, sizeof(b) - 1);
printf("String a was %s, b was %s\n", a, b);
return 0;
}
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c
b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 2317398..801b7c8 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1616,7 +1616,7 @@ static int try_alloc_port(struct ipath_devdata *dd, int
port,
pd->port_cnt = 1;
port_fp(fp) = pd;
pd->port_pid = get_pid(task_pid(current));
- strncpy(pd->port_comm, current->comm, sizeof(pd->port_comm));
+ strncpy(pd->port_comm, current->comm, sizeof(pd->port_comm) -
1);
ipath_stats.sps_ports++;
ret = 0;
} else
diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c
b/drivers/infiniband/hw/ipath/ipath_mad.c
index 16a702d..9cd9d63 100644
--- a/drivers/infiniband/hw/ipath/ipath_mad.c
+++ b/drivers/infiniband/hw/ipath/ipath_mad.c
@@ -60,7 +60,7 @@ static int recv_subn_get_nodedescription(struct ib_smp *smp,
if (smp->attr_mod)
smp->status |= IB_SMP_INVALID_FIELD;
- strncpy(smp->data, ibdev->node_desc, sizeof(smp->data));
+ strncpy(smp->data, ibdev->node_desc, sizeof(smp->data) - 1);
return reply(smp);
}
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