[PATCH] perf llvm: Fix memory leak of args->fileloc in symbol__disassemble_llvm()

[Tengda Wu]

In symbol__disassemble_llvm(), after calling llvm_addr2line(), if the
subsequent disasm_line__new() fails, the code directly jumps to 'err'
without freeing args->fileloc, leading to a memory leak.

Fix this by explicitly calling free(args->fileloc) before jumping to
the error handling path when disasm_line__new() fails.

Fixes: 048856817888 ("perf annotate: LLVM-based disassembler")
Signed-off-by: Tengda Wu <wutengda@xxxxxxxxxxxxxxx>
---
 tools/perf/util/llvm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/llvm.c b/tools/perf/util/llvm.c
index a0deb742a733..dc66f6cc1db6 100644
--- a/tools/perf/util/llvm.c
+++ b/tools/perf/util/llvm.c
@@ -254,8 +254,10 @@ int symbol__disassemble_llvm(const char *filename, struct symbol *sym,
 			       (unsigned int *)&args->line_nr, false, NULL);
 
 		dl = disasm_line__new(args);
-		if (dl == NULL)
+		if (dl == NULL) {
+			free(args->fileloc);
 			goto err;
+		}
 
 		annotation_line__add(&dl->al, &notes->src->source);
 
-- 
2.34.1