drivers/isdn/sc/ioctl.c: add missing kfree
Author: Julia Lawall <julia@diku.dk>
spid has been allocated in this function and so should be freed before
leaving it, as in the other error handling cases.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
@r exists@
expression E,E1;
statement S;
position p1,p2,p3;
@@
E =@p1 \(kmalloc\|kcalloc\|kzalloc\)(...)
... when != E = E1
if (E == NULL || ...) S
... when != E = E1
if@p2 (...) {
... when != kfree(E)
}
... when != E = E1
kfree@p3(E);
@forall@
position r.p2;
expression r.E;
int E1 != 0;
@@
* if@p2 (...) {
... when != kfree(E)
when strict
return E1; }
Signed-off-by: Julia Lawall
Cc: Karsten Keil
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
---
drivers/isdn/sc/ioctl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/isdn/sc/ioctl.c b/drivers/isdn/sc/ioctl.c
index 7817d22..1081091 100644
--- a/drivers/isdn/sc/ioctl.c
+++ b/drivers/isdn/sc/ioctl.c
@@ -226,6 +226,7 @@ int sc_ioctl(int card, scs_ioctl *data)
*/
if (copy_from_user(spid, data->dataptr, SCIOC_SPIDSIZE)) {
kfree(rcvmsg);
+ kfree(spid);
return -EFAULT;
} |
---
drivers/isdn/sc/ioctl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/isdn/sc/ioctl.c b/drivers/isdn/sc/ioctl.c
index 7817d22..1081091 100644
--- a/drivers/isdn/sc/ioctl.c
+++ b/drivers/isdn/sc/ioctl.c
@@ -226,6 +226,7 @@ int sc_ioctl(int card, scs_ioctl *data)
*/
if (copy_from_user(spid, data->dataptr, SCIOC_SPIDSIZE)) {
kfree(rcvmsg);
+ kfree(spid);
return -EFAULT;
}