[PATCH 6.8 031/143] firmware: tegra: bpmp: Return directly after a failed kzalloc() in get_filename()

Greg Kroah-Hartman
2024-04-11T10:08:10Z

From: Markus Elfring <elfring@users.sourceforge.net>

[ Upstream commit 1315848f1f8a0100cb6f8a7187bc320c5d98947f ]

The kfree() function was called in one case by
the get_filename() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus return directly after a call of the function “kzalloc” failed
at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/tegra/bpmp-debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c
index bbcdd9fed3fb6..4221fed70ad48 100644
--- a/drivers/firmware/tegra/bpmp-debugfs.c
+++ b/drivers/firmware/tegra/bpmp-debugfs.c
@@ -77,7 +77,7 @@ static const char *get_filename(struct tegra_bpmp *bpmp,

root_path_buf = kzalloc(root_path_buf_len, GFP_KERNEL);
if (!root_path_buf)
- goto out;
+ return NULL;

root_path = dentry_path(bpmp->debugfs_mirror, root_path_buf,
root_path_buf_len);
--
2.43.0