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[ 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>