The "msgp" must points to the userspace buffer.
fix for linux-next commit 774d0252d303969a7281eefd6eaccde50bb6eb6e
("c/r: ipc: message queue receive cleanup")
Signed-off-by: Konstantin Khlebnikov<khlebnikov@xxxxxxxxxx>
Cc: Stanislav Kinsbursky<skinsbursky@xxxxxxxxxxxxx>
Cc: Lucas De Marchi<lucas.de.marchi@xxxxxxxxx>
Cc: Chris Metcalf<cmetcalf@xxxxxxxxxx>
Cc: Cyrill Gorcunov<gorcunov@xxxxxxxxxx>
Cc: Pavel Emelyanov<xemul@xxxxxxxxxxxxx>
Cc: Arnd Bergmann<arnd@xxxxxxxx>
Cc: Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx>
---
ipc/compat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ipc/compat.c b/ipc/compat.c
index 6da376b..0c2ebd0 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -363,7 +363,7 @@ static long compat_do_msg_steal(void __user *dest, struct msg_msg *msg, size_t b
long compat_do_msg_fill(void __user *dest, struct msg_msg *msg, size_t bufsz)
{
- struct compat_msgbuf __user *msgp;
+ struct compat_msgbuf __user *msgp = dest;
size_t msgsz;
if (put_user(msg->m_type,&msgp->mtype))