linux-kernel - [PATCH] drm/v3d: remove second free in v3d_submit_cl

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Message-Id: <20200720135631.2854-1-trix@redhat.com>
Date:   Mon, 20 Jul 2020 06:56:31 -0700
From:   trix@...hat.com
To:     eric@...olt.net, airlied@...ux.ie, daniel@...ll.ch,
        itoral@...lia.com, navid.emamdoost@...il.com
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Tom Rix <trix@...hat.com>
Subject: [PATCH] drm/v3d: remove second free in v3d_submit_cl_ioctl

From: Tom Rix <trix@...hat.com>

clang static analysis reports this error

v3d_gem.c:573:4: warning: Attempt to free released
  memory [unix.Malloc]
    kfree(bin);
    ^~~~~~~~~~

Problem is in the block of code

	if (ret) {
		kfree(bin);
		v3d_job_put(&render->base);
		kfree(bin);
		return ret;
	}

Obviously bin is freed twice.
So remove one.

Fixes: 0d352a3a8a1f ("drm/v3d: don't leak bin job if v3d_job_init fails.")
Fixes: 29cd13cfd762 ("drm/v3d: Fix memory leak in v3d_submit_cl_ioctl")

Signed-off-by: Tom Rix <trix@...hat.com>
---
 drivers/gpu/drm/v3d/v3d_gem.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 915f8bfdb58c..3cfbdb8e6a91 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -570,7 +570,6 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 		if (ret) {
 			kfree(bin);
 			v3d_job_put(&render->base);
-			kfree(bin);
 			return ret;
 		}
 
-- 
2.18.1