From: Sage Weil <sage@redhat.com>
Date: Thu, 23 Jun 2016 14:00:01 +0000 (-0400)
Subject: common/buffer: assert that we do not exceed IOV_MAX in prepare_iov
X-Git-Tag: ses5-milestone5~545^2~9
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=98f5fd5e36fbc67bc07bc072c6a7cb1d89374396;p=ceph.git

common/buffer: assert that we do not exceed IOV_MAX in prepare_iov

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index b75136f9f55c..785a210fb963 100644
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -2273,6 +2273,7 @@ int buffer::list::write_fd(int fd, uint64_t offset) const
 
 void buffer::list::prepare_iov(std::vector<iovec> *piov) const
 {
+  assert(_buffers.size() <= IOV_MAX);
   piov->resize(_buffers.size());
   unsigned n = 0;
   for (std::list<buffer::ptr>::const_iterator p = _buffers.begin();