Revision d81916910f7498fe7a768697e0101d488f9fe665 authored by Yang Yingliang on 29 October 2022, 08:29:31 UTC, committed by Huacai Chen on 29 October 2022, 08:29:31 UTC
Currently the return value of 'sub_driver->init' is not checked. If
sparse_keymap_setup() called in the init function fails, 'generic_
inputdev' is freed, then it will lead a UAF when using it in generic_
acpi_laptop_init(). Fix it by checking the return value and setting
generic_inputdev to NULL after free, so as to avoid double free it.
The error code in generic_subdriver_init() is always negative, so the
return of generic_subdriver_init() can be simplified.
Fixes: 6246ed09111f ("LoongArch: Add ACPI-based generic laptop driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
1 parent fbe605a
modules-check.sh
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
set -e
if [ $# != 1 ]; then
echo "Usage: $0 <modules.order>" >& 2
exit 1
fi
exit_code=0
# Check uniqueness of module names
check_same_name_modules()
{
for m in $(sed 's:.*/::' "$1" | sort | uniq -d)
do
echo "error: the following would cause module name conflict:" >&2
sed -n "/\/$m/s:^: :p" "$1" >&2
exit_code=1
done
}
check_same_name_modules "$1"
exit $exit_code
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