On 05/03/2013 04:12 AM, Daniel P. Berrange wrote:
From: "Daniel P. Berrange" <berrange(a)redhat.com>
The F_DUPFD_CLOEXEC operation with fcntl() expects a single
int argument, specifying the minimum FD number for the newly
dup'd file descriptor. We were not specifying that causing
random stack data to be accessed as the FD number. Sometimes
that worked, sometimes it didn't.
Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com>
---
src/rpc/virnetsocket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Bug introduced in commit f4287c76 in Aug 2011. ACK.
diff --git a/src/rpc/virnetsocket.c b/src/rpc/virnetsocket.c
index e950d7f..dcf98b1 100644
--- a/src/rpc/virnetsocket.c
+++ b/src/rpc/virnetsocket.c
@@ -1055,7 +1055,7 @@ int virNetSocketDupFD(virNetSocketPtr sock, bool cloexec)
int fd;
if (cloexec)
- fd = fcntl(sock->fd, F_DUPFD_CLOEXEC);
+ fd = fcntl(sock->fd, F_DUPFD_CLOEXEC, 0);
else
fd = dup(sock->fd);
if (fd < 0) {
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library
http://libvirt.org