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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-29 11:26:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-29 11:26:40 -0700
commit9e82b4a91d46a690de3cbbe6960667caa508b27a (patch)
treec90683f56a9d5e9d63bfbaa50658b6cdff45c980
parent9fb67d643f6f1892a08ee3a04ea54022d1060bb0 (diff)
parentdfb4a6f2191a80c8b790117d0ff592fd712d3296 (diff)
Merge tag 'trace-v5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt: "This fixes a memory leak from the error path in the event filter logic" * tag 'trace-v5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Avoid memory leak in predicate_parse()
-rw-r--r--kernel/trace/trace_events_filter.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index d3e59312ef40..5079d1db3754 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -428,7 +428,7 @@ predicate_parse(const char *str, int nr_parens, int nr_preds,
op_stack = kmalloc_array(nr_parens, sizeof(*op_stack), GFP_KERNEL);
if (!op_stack)
return ERR_PTR(-ENOMEM);
- prog_stack = kmalloc_array(nr_preds, sizeof(*prog_stack), GFP_KERNEL);
+ prog_stack = kcalloc(nr_preds, sizeof(*prog_stack), GFP_KERNEL);
if (!prog_stack) {
parse_error(pe, -ENOMEM, 0);
goto out_free;
@@ -579,7 +579,11 @@ predicate_parse(const char *str, int nr_parens, int nr_preds,
out_free:
kfree(op_stack);
kfree(inverts);
- kfree(prog_stack);
+ if (prog_stack) {
+ for (i = 0; prog_stack[i].pred; i++)
+ kfree(prog_stack[i].pred);
+ kfree(prog_stack);
+ }
return ERR_PTR(ret);
}