From: Julien Desfossez <julien.desfossez@efficios.com>
Date: Wed, 28 Mar 2012 02:15:47 +0000 (-0400)
Subject: Safety check in iostream
X-Git-Tag: v0.2~46
X-Git-Url: https://git.lttng.org/?p=lttngtop.git;a=commitdiff_plain;h=6f29d91efdaccdce256eb2e35be385da599daa77

Safety check in iostream

Caused a segfault on a test trace

Signed-off-by: Julien Desfossez <julien.desfossez@efficios.com>
---

diff --git a/src/iostreamtop.c b/src/iostreamtop.c
index 62b926e..7c1d611 100644
--- a/src/iostreamtop.c
+++ b/src/iostreamtop.c
@@ -199,13 +199,15 @@ int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm,
 			tmp->totalfileread += ret;
 			tmp->fileread += ret;
 			tmpfile = get_file(tmp, tmp->syscall_info->fd);
-			tmpfile->read += ret;
+			if (tmpfile)
+				tmpfile->read += ret;
 		} else if (tmp->syscall_info->type == __NR_write
 			&& ret > 0) {
 			tmp->totalfilewrite += ret;
 			tmp->filewrite += ret;
 			tmpfile = get_file(tmp, tmp->syscall_info->fd);
-			tmpfile->write += ret;
+			if (tmpfile)
+				tmpfile->write += ret;
 		} else if (tmp->syscall_info->type == __NR_open
 			&& ret > 0) {
 			tmpfile = tmp->files_history->file;