From a87c9cfc6ccd15814d0d59f7d20432fa97dc53eb Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Thu, 5 Mar 2020 20:46:01 +0100
Subject: [PATCH] devproc: fix syscalltrace read for ratrace

---
 sys/src/9/port/devproc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/src/9/port/devproc.c b/sys/src/9/port/devproc.c
index 4692eafda..01dcede44 100644
--- a/sys/src/9/port/devproc.c
+++ b/sys/src/9/port/devproc.c
@@ -1119,9 +1119,10 @@ procread(Chan *c, void *va, long n, vlong off)
 		goto statbufread;
 
 	case Qsyscall:
-		n = 0;
 		if(p->syscalltrace != nil)
 			n = readstr(offset, va, n, p->syscalltrace);
+		else
+			n = 0;
 		break;
 
 	case Qnote: