linux-kernel - [PATCH -next] drm/amdgpu: Fix missing unlock on error in amdgpu_ras_debugfs_table

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Date:   Mon, 5 Jul 2021 09:39:48 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <amd-gfx@...ts.freedesktop.org>
CC:     <alexander.deucher@....com>
Subject: [PATCH -next] drm/amdgpu: Fix missing unlock on error in amdgpu_ras_debugfs_table_read()

Add the missing unlock before return from function
amdgpu_ras_debugfs_table_read() in the error handling
case.

Fixes: 9b790694a031 ("drm/amdgpu: RAS EEPROM table is now in debugfs")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index fc70620369e4..dbeeb4986ca6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -912,8 +912,10 @@ static ssize_t amdgpu_ras_debugfs_table_read(struct file *f, char __user *buf,
 				 record.retired_page);
 
 			data_len = min_t(size_t, rec_hdr_fmt_size - r, size);
-			if (copy_to_user(buf, &data[r], data_len))
-				return -EINVAL;
+			if (copy_to_user(buf, &data[r], data_len)) {
+				res = -EINVAL;
+				goto Out;
+			}
 			buf += data_len;
 			size -= data_len;
 			*pos += data_len;
-- 
2.25.1