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Message-Id: <20191009100024.23077-1-colin.king@canonical.com>
Date: Wed, 9 Oct 2019 11:00:24 +0100
From: Colin King <colin.king@...onical.com>
To: Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Chris Wilson <chris@...is-wilson.co.uk>,
Tvrtko Ursulin <tvrtko.ursulin@...el.com>,
intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] drm/i915/selftests: fix null pointer dereference on pointer data
From: Colin Ian King <colin.king@...onical.com>
In the case where data fails to be allocated the error exit path is
via label 'out' where data is dereferenced in a for-loop. Fix this
by exiting via the label 'out_file' instead to avoid the null pointer
dereference.
Addresses-Coverity: ("Dereference after null check")
Fixes: 50d16d44cce4 ("drm/i915/selftests: Exercise context switching in parallel")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index fb58c0919ea1..e5c235051ae5 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -263,7 +263,7 @@ static int live_parallel_switch(void *arg)
if (!data) {
i915_gem_context_unlock_engines(ctx);
err = -ENOMEM;
- goto out;
+ goto out_file;
}
m = 0; /* Use the first context as our template for the engines */
--
2.20.1
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