[PATCH] kernel-shark: Fix segfault in libkshark-tepdata

[PATCH] kernel-shark: Fix segfault in libkshark-tepdata

[Yordan Karadzhov]

It turns out that the size of the info field of some events can be zero.

Fixing: 3146d0b (kernel-shark: Do not truncate multi-line events)
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=217429
Signed-off-by: Yordan Karadzhov <y.karadz@gmail.com>
---
 src/libkshark-tepdata.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libkshark-tepdata.c b/src/libkshark-tepdata.c
index 2009ca6..b780957 100644
--- a/src/libkshark-tepdata.c
+++ b/src/libkshark-tepdata.c
@@ -825,6 +825,8 @@ static char *get_info_str(struct kshark_data_stream *stream,
 	tep_print_event(kshark_get_tep(stream), &seq, record,
 			"%s", TEP_PRINT_INFO);
 
+	if (!seq.len)
+		return NULL;
 	/*
 	 * The event info string contains a trailing newline.
 	 * Remove this newline.
-- 
2.40.0