Some code in the block layer makes potentially huge allocations. Failure
is not completely unexpected there, so avoid aborting qemu and handle
out-of-memory situations gracefully.
This patch addresses the allocations in the nfs block driver.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
nfs_co_init_task(client, &task);
- buf = g_malloc(nb_sectors * BDRV_SECTOR_SIZE);
+ buf = g_try_malloc(nb_sectors * BDRV_SECTOR_SIZE);
+ if (nb_sectors && buf == NULL) {
+ return -ENOMEM;
+ }
+
qemu_iovec_to_buf(iov, 0, buf, nb_sectors * BDRV_SECTOR_SIZE);
if (nfs_pwrite_async(client->context, client->fh,