Thread (5 messages) flat view 5 messages, 3 authors, 2015-12-15

Re: [PATCH] net: fix uninitialized variable issue

From: Eric Dumazet <hidden>
Date: 2015-12-15 19:02:14
Also in: linux-crypto, lkml, stable

On Tue, 2015-12-15 at 10:46 -0800, Tadeusz Struk wrote:
quoted hunk ↗ jump to hunk
msg_iocb needs to be initialized on the recv/recvfrom path.
Otherwise afalg will wrongly interpret it as an async call.

Cc: stable@vger.kernel.org
Reported-by: Harald Freudenberger <redacted>
Signed-off-by: Tadeusz Struk <redacted>
---
 net/socket.c |    1 +
 1 file changed, 1 insertion(+)
diff --git a/net/socket.c b/net/socket.c
index dd2c247..80ca820 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1702,6 +1702,7 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
 	msg.msg_name = addr ? (struct sockaddr *)&address : NULL;
 	/* We assume all kernel code knows the size of sockaddr_storage */
 	msg.msg_namelen = 0;
+	msg.msg_iocb = NULL;
 	if (sock->file->f_flags & O_NONBLOCK)
 		flags |= MSG_DONTWAIT;
 	err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags);
Do not add "Cc: stable@vger.kernel.org" for networking patches, thanks 
( Documentation/networking/netdev-FAQ.txt )

Do you know when was this bug added ?

Please add the 

Fixes:  12-digit-sha1 ("patch title")

Thanks.
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