From: Dan Carpenter <dan.carpenter@oracle.com>
To: David Airlie <airlied@linux.ie>
Cc: "Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Jammy Zhou" <Jammy.Zhou@amd.com>, yanyang1 <young.yang@amd.com>,
"Marek Olšák" <marek.olsak@amd.com>,
dri-devel@lists.freedesktop.org, kernel-janitors@vger.kernel.org
Subject: [patch] drm/amdgpu: potential NULL dereference on error
Date: Thu, 11 Jun 2015 08:49:33 +0000 [thread overview]
Message-ID: <20150611084933.GA27393@mwanda> (raw)
debugfs_create_file() can return an error pointer if debugfs is disabled
or it can return NULL on error.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 36be03c..adba2a1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1980,6 +1980,8 @@ static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
adev, &amdgpu_debugfs_regs_fops);
if (IS_ERR(ent))
return PTR_ERR(ent);
+ if (!ent)
+ return -ENOMEM;
i_size_write(ent->d_inode, adev->rmmio_size);
adev->debugfs_regs = ent;
next reply other threads:[~2015-06-11 8:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-11 8:49 Dan Carpenter [this message]
2015-06-11 12:03 ` [patch] drm/amdgpu: potential NULL dereference on error walter harms
2015-06-11 12:20 ` Dan Carpenter
2015-06-11 14:35 ` walter harms
2015-06-11 14:51 ` Dan Carpenter
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