[Xen-devel] [PATCH 05/19] libxl: remove poller from list in libxl__poller_get

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

From: Roger Pau Monne <roger.pau@xxxxxxxxxx>

Remove poller from the list once it has been requested.
Fixes a double-free bug.

Signed-off-by: Roger Pau Monne <roger.pau@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxx>
---
 tools/libxl/libxl_event.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/tools/libxl/libxl_event.c b/tools/libxl/libxl_event.c
index 5ac6334..9cb172a 100644
--- a/tools/libxl/libxl_event.c
+++ b/tools/libxl/libxl_event.c
@@ -1010,8 +1010,10 @@ libxl__poller *libxl__poller_get(libxl_ctx *ctx)
     int rc;
 
     libxl__poller *p = LIBXL_LIST_FIRST(&ctx->pollers_idle);
-    if (p)
+    if (p) {
+        LIBXL_LIST_REMOVE(p, entry);
         return p;
+    }
 
     p = malloc(sizeof(*p));
     if (!p) {
-- 
1.7.2.5


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