[Xen-changelog] Once grant refs run out, netfront prints a nice message, but doesn't set

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 8e1bfcb901e59e8d33dc185ab8920c7a79a73db6
# Parent  c7006e46cd06b744a2efa6ba2a80e6355b8a2e97
Once grant refs run out, netfront prints a nice message, but doesn't set
err properly to notify the caller, and the domU crashes. (See bug 183 for
details).

Signed-off-by: Jim Dykman <dykman@xxxxxxxxxx>

diff -r c7006e46cd06 -r 8e1bfcb901e5 
linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c
--- a/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c      Sun Oct 30 
15:40:05 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c      Sun Oct 30 
15:43:05 2005
@@ -877,6 +877,7 @@
        if (gnttab_alloc_grant_references(NETIF_TX_RING_SIZE,
                                          &np->gref_tx_head) < 0) {
                printk(KERN_ALERT "#### netfront can't alloc tx grant refs\n");
+               err = -ENOMEM;
                goto exit;
        }
        /* A grant for every rx ring slot */
@@ -884,6 +885,7 @@
                                          &np->gref_rx_head) < 0) {
                printk(KERN_ALERT "#### netfront can't alloc rx grant refs\n");
                gnttab_free_grant_references(np->gref_tx_head);
+               err = -ENOMEM;
                goto exit;
        }
 

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