diff --git a/include/haproxy/tinfo-t.h b/include/haproxy/tinfo-t.h
index 5dce74383..f061a6e79 100644
--- a/include/haproxy/tinfo-t.h
+++ b/include/haproxy/tinfo-t.h
@@ -83,6 +83,7 @@ enum thread_exec_ctx_type {
 	TH_EX_CTX_CALLER,                   /* the pointer is an ha_caller of the caller providing file:line etc */
 	TH_EX_CTX_SMPF,                     /* directly registered sample fetch function, using .smpf_kwl */
 	TH_EX_CTX_CONV,                     /* directly registered converter function, using .conv_kwl */
+	TH_EX_CTX_FUNC,                     /* hopefully recognizable function/callback, using .pointer */
 };
 
 struct thread_exec_ctx {
diff --git a/src/tools.c b/src/tools.c
index 10a9badca..58fa78013 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -7535,6 +7535,10 @@ void chunk_append_thread_ctx(struct buffer *output, const struct thread_exec_ctx
 	case TH_EX_CTX_CONV:
 		chunk_appendf(output,"conv kwl starting with '%s'", ctx->conv_kwl->kw[0].kw);
 		break;
+	case TH_EX_CTX_FUNC:
+		resolve_sym_name(output, "func '", ctx->pointer);
+		chunk_appendf(output,"'");
+		break;
 	default:
 		chunk_appendf(output,"other ctx %p", ctx->pointer);
 		break;