From: Willy Tarreau <w@1wt.eu>
Date: Fri, 2 Sep 2022 07:13:12 +0000 (+0200)
Subject: MINOR: debug: report applet pointer and handler in crashes when known
X-Git-Tag: v2.7-dev5~10
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=714900a3c967eae7ff8d528239e7e9d02fac5df9;p=thirdparty%2Fhaproxy.git

MINOR: debug: report applet pointer and handler in crashes when known

When an appctx is found looping over itself, we report a number of info
but not the pointers to the definition nor the handler, which can be quite
handy in some cases. Let's add them and try to decode the symbol.
---

diff --git a/src/stream.c b/src/stream.c
index 4208885f9d..49844c7f2f 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -2829,6 +2829,18 @@ void stream_dump_and_crash(enum obj_type *obj, int rate)
 	}
 	chunk_appendf(&trash, "}");
 
+	if (ptr != s) { // that's an appctx
+		const struct appctx *appctx = ptr;
+
+		chunk_appendf(&trash, " applet=%p(", appctx->applet);
+		resolve_sym_name(&trash, NULL, appctx->applet);
+		chunk_appendf(&trash, ")");
+
+		chunk_appendf(&trash, " handler=%p(", appctx->applet->fct);
+		resolve_sym_name(&trash, NULL, appctx->applet->fct);
+		chunk_appendf(&trash, ")");
+	}
+
 	memprintf(&msg,
 	          "A bogus %s [%p] is spinning at %d calls per second and refuses to die, "
 	          "aborting now! Please report this error to developers "