From: Rob Clark <robdclark@gmail.com>
Date: Tue, 4 Apr 2017 12:53:57 +0000 (-0400)
Subject: gallium/util: fix missing limit check in libunwind backtrace
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7c69ea553bfa8e23feedc5d3f479a9003c139bad;p=mesa.git

gallium/util: fix missing limit check in libunwind backtrace

Fixes: 70c272004f ("gallium/util: libunwind support")
Signed-off-by: Rob Clark <robdclark@gmail.com>
---

diff --git a/src/gallium/auxiliary/util/u_debug_stack.c b/src/gallium/auxiliary/util/u_debug_stack.c
index cf05f13ddd0..14d5b16c376 100644
--- a/src/gallium/auxiliary/util/u_debug_stack.c
+++ b/src/gallium/auxiliary/util/u_debug_stack.c
@@ -62,7 +62,7 @@ debug_backtrace_capture(struct debug_stack_frame *backtrace,
    while ((start_frame > 0) && (unw_step(&cursor) > 0))
       start_frame--;
 
-   while (unw_step(&cursor) > 0) {
+   while ((i < nr_frames) && (unw_step(&cursor) > 0)) {
       char procname[256];
       const char *filename;
       unw_word_t off;