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net: fix uninitialized variable issue

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[ Upstream commit 130ed5d105 ]

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 <freude@linux.vnet.ibm.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
tadeusz.struk@intel.com
2015-12-15 10:46:17 -08:00
committed by Greg Kroah-Hartman
parent 1814295365
commit 1c72e110be
1 changed files with 1 additions and 0 deletions
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net/socket.c
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@@ -1705,6 +1705,7 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
msg.msg_name = addr ? (struct sockaddr *)&address : NULL; msg.msg_name = addr ? (struct sockaddr *)&address : NULL;
/* We assume all kernel code knows the size of sockaddr_storage */ /* We assume all kernel code knows the size of sockaddr_storage */
msg.msg_namelen = 0; msg.msg_namelen = 0;
msg.msg_iocb = NULL;
if (sock->file->f_flags & O_NONBLOCK) if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT; flags |= MSG_DONTWAIT;
err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags); err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags);