From 711e26c00e4c7b7cef0420c76a61e6d818e12687 Mon Sep 17 00:00:00 2001
From: Lv Ruyi <lv.ruyi@zte.com.cn>
Date: Sat, 9 Oct 2021 08:59:00 +0000
Subject: [PATCH] firmware: tegra: Fix error application of sizeof() to pointer
Git-commit: 711e26c00e4c7b7cef0420c76a61e6d818e12687
Patch-mainline: v5.16-rc6
References: git-fixes
Application of sizeof() to pointer yields the number of bytes of the
pointer, but it should use the length of buffer in the code.
Fixes: 06c2d9a078ab ("firmware: tegra: Reduce stack usage")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/firmware/tegra/bpmp-debugfs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c
index 6d66fe03fb6a..fd89899aeeed 100644
--- a/drivers/firmware/tegra/bpmp-debugfs.c
+++ b/drivers/firmware/tegra/bpmp-debugfs.c
@@ -77,13 +77,14 @@ static const char *get_filename(struct tegra_bpmp *bpmp,
const char *root_path, *filename = NULL;
char *root_path_buf;
size_t root_len;
+ size_t root_path_buf_len = 512;
- root_path_buf = kzalloc(512, GFP_KERNEL);
+ root_path_buf = kzalloc(root_path_buf_len, GFP_KERNEL);
if (!root_path_buf)
goto out;
root_path = dentry_path(bpmp->debugfs_mirror, root_path_buf,
- sizeof(root_path_buf));
+ root_path_buf_len);
if (IS_ERR(root_path))
goto out;
--
2.31.1