From: Donald Sharp <sharpd@nvidia.com>
Date: Sat, 30 Jan 2021 21:19:08 +0000 (-0500)
Subject: lib: Prevent unininted usage of data
X-Git-Tag: base_8.0~440^2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=63e040391d8ae958a2fe04f2b836fecfdb782431;p=mirror%2Ffrr.git

lib: Prevent unininted usage of data

Valgrind reports that some data being used in the
stack unwind of a crash is being used uninitailized.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
---

diff --git a/lib/log.c b/lib/log.c
index 03ed23a04b..f7275589c2 100644
--- a/lib/log.c
+++ b/lib/log.c
@@ -179,6 +179,9 @@ void zlog_backtrace_sigsafe(int priority, void *program_counter)
 	unw_word_t ip, off, sp;
 	Dl_info dlinfo;
 
+	memset(&uc, 0, sizeof(uc));
+	memset(&cursor, 0, sizeof(cursor));
+
 	unw_getcontext(&uc);
 	unw_init_local(&cursor, &uc);
 	while (unw_step(&cursor) > 0) {