3.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx> commit 2dc958fa2fe6987e7ab106bd97029a09a82fcd8d upstream. Make sure that msg pointer is set back to error value in case of MSG_COPY flag is set and desired message to copy wasn't found. This garantees that msg is either a error pointer or a copy address. Otherwise the last message in queue will be freed without unlinking from the queue (which leads to memory corruption) and the dummy allocated copy won't be released. Signed-off-by: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- ipc/msg.c | 1 + 1 file changed, 1 insertion(+) --- a/ipc/msg.c +++ b/ipc/msg.c @@ -872,6 +872,7 @@ long do_msgrcv(int msqid, void __user *b goto out_unlock; break; } + msg = ERR_PTR(-EAGAIN); } else break; msg_counter++; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html