[PATCH] drm: etnaviv: fix strncpy sizeof argument

Bo YU tsu.yubo at gmail.com
Tue Mar 19 02:57:55 UTC 2019


Calling strncpy with a maximum size argument of 64 bytes on destination
array "domain->name" of size 64 bytes might leave the destination string
unterminated.

Detected by CoverityScan, CID# 1443992:  Memory - illegal accesses
(BUFFER_SIZE_WARNING)

Fixes: 9e2c2e2730126 (drm/etnaviv: add infrastructure to query perf counter)
Signed-off-by: Bo YU <tsu.yubo at gmail.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_perfmon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
index 4227a4006c34..08ca3c44be48 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c
@@ -414,7 +414,7 @@ int etnaviv_pm_query_dom(struct etnaviv_gpu *gpu,
 
 	domain->id = domain->iter;
 	domain->nr_signals = dom->nr_signals;
-	strncpy(domain->name, dom->name, sizeof(domain->name));
+	strncpy(domain->name, dom->name, sizeof(dom->name));
 
 	domain->iter++;
 	if (domain->iter == meta->nr_domains)
-- 
2.11.0



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