From 5968b1c304188e466759b8ba419fc10f150e5541 Mon Sep 17 00:00:00 2001

From: Tom Gundersen <teg@jklm.no>

Date: Thu, 28 Aug 2014 15:59:13 +0200

Subject: [PATCH] sd-rtnl: log if kernel buffer is overrun as we currently

 can't handle that case

---

 src/libsystemd/sd-rtnl/rtnl-message.c | 7 +++++--

 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c

index 1f596ca10c..906a9de1c0 100644

--- a/src/libsystemd/sd-rtnl/rtnl-message.c

+++ b/src/libsystemd/sd-rtnl/rtnl-message.c

@@ -1132,10 +1132,13 @@ static int socket_recv_message(int fd, struct iovec *iov, uint32_t *_group, bool

         assert(iov);

         r = recvmsg(fd, &msg, MSG_TRUNC | (peek ? MSG_PEEK : 0));

-        if (r < 0)

+        if (r < 0) {

                 /* no data */

+                if (errno == ENOBUFS)

+                        log_debug("rtnl: kernel receive buffer overrun");

+

                 return (errno == EAGAIN) ? 0 : -errno;

-        else if (r == 0)

+        } else if (r == 0)

                 /* connection was closed by the kernel */

                 return -ECONNRESET;