[PATCH 5/5] trace-cmd: BUG fix malloc() pointer validation

[Federico Vaga]

To reproduce the bug

mkdir /sys/kernel/debug/tracing/instances/test
./trace-cmd show -B test -s -f
  Failed to allocate instance path snapshot

Signed-off-by: Federico Vaga <federico.v...@vaga.pv.it>
---
 trace-cmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/trace-cmd.c b/trace-cmd.c
index a05df92..320229e 100644
--- a/trace-cmd.c
+++ b/trace-cmd.c
@@ -616,7 +616,7 @@ int main (int argc, char **argv)
                if (buffer) {
                        path = malloc(strlen(buffer) + strlen("instances//") +
                                      strlen(file) + 1);
-                       if (path)
+                       if (!path)
                                die("Failed to allocate instance path %s", 
file);
                        sprintf(path, "instances/%s/%s", buffer, file);
                        file = path;
-- 
2.9.3