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authorSteven Luong <sluong@cisco.com>2019-01-23 22:20:19 -0800
committerDamjan Marion <dmarion@me.com>2019-03-13 08:23:25 +0000
commitec950c23a7e3ac7bd46653addc3cca294b2daa6a (patch)
tree804296f017597c6c6e5a401576aae5bce290763f /src
parent39382976701926c1f34191c1311829c15a53cb01 (diff)
vhost: potential crash in map_guest_mem using debug image
map_guest_mem may be called from worker-thread/dataplane. It has a call to vlib_log and may crash inside vlib_log's ASSERT statement /* make sure we are running on the main thread to avoid use in dataplane code, for dataplane logging consider use of event-logger */ ASSERT (vlib_get_thread_index () == 0); The fix is to convert the vlib_log call in map_guest_map to event logger Change-Id: Iaaf6d86782aa8a18d25e0209f22dc31f04668d56 Signed-off-by: Steven Luong <sluong@cisco.com> (cherry picked from commit b0789106cb4f4c7ac529c02a5ff1ac346f0913dd)
Diffstat (limited to 'src')
-rw-r--r--src/vnet/devices/virtio/vhost_user_inline.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_inline.h b/src/vnet/devices/virtio/vhost_user_inline.h
index 02c15ad666f..544e2d36952 100644
--- a/src/vnet/devices/virtio/vhost_user_inline.h
+++ b/src/vnet/devices/virtio/vhost_user_inline.h
@@ -15,6 +15,7 @@
#ifndef __VIRTIO_VHOST_USER_INLINE_H__
#define __VIRTIO_VHOST_USER_INLINE_H__
/* vhost-user inline functions */
+#include <vppinfra/elog.h>
static_always_inline void *
map_guest_mem (vhost_user_intf_t * vui, uword addr, u32 * hint)
@@ -134,7 +135,19 @@ vhost_map_guest_mem_done:
}
}
#endif
- vu_log_err (vui, "failed to map guest mem addr %llx", addr);
+ /* *INDENT-OFF* */
+ ELOG_TYPE_DECLARE (el) =
+ {
+ .format = "failed to map guest mem addr %lx",
+ .format_args = "i8",
+ };
+ /* *INDENT-ON* */
+ struct
+ {
+ uword addr;
+ } *ed;
+ ed = ELOG_DATA (&vlib_global_main.elog_main, el);
+ ed->addr = addr;
*hint = 0;
return 0;
}