diff mbox series

[5.7,369/477] tools, bpftool: Fix memory leak in codegen error cases

Message ID 20200623195424.972829781@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH June 23, 2020, 7:56 p.m. UTC 
From: Tobias Klauser <tklauser@distanz.ch>

[ Upstream commit d4060ac969563113101c79433f2ae005feca1c29 ]

Free the memory allocated for the template on error paths in function
codegen.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200610130804.21423-1-tklauser@distanz.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/bpf/bpftool/gen.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index f8113b3646f52..f5960b48c8615 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -225,6 +225,7 @@  static int codegen(const char *template, ...)
 		} else {
 			p_err("unrecognized character at pos %td in template '%s'",
 			      src - template - 1, template);
+			free(s);
 			return -EINVAL;
 		}
 	}
@@ -235,6 +236,7 @@  static int codegen(const char *template, ...)
 			if (*src != '\t') {
 				p_err("not enough tabs at pos %td in template '%s'",
 				      src - template - 1, template);
+				free(s);
 				return -EINVAL;
 			}
 		}