6.12-stable review patch. If anyone has any objections, please let me know.
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From: Tiezhu Yang yangtiezhu@loongson.cn
commit a258a3cb1895e3acf5f2fe245d17426e894bc935 upstream.
It is better to use unsigned long rather than long for _end and _text to calculate the kernel length.
Cc: stable@vger.kernel.org # v6.3+ Fixes: e5f02b51fa0c ("LoongArch: Add support for kernel address space layout randomization (KASLR)") Signed-off-by: Tiezhu Yang yangtiezhu@loongson.cn Signed-off-by: Huacai Chen chenhuacai@loongson.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/loongarch/kernel/relocate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/loongarch/kernel/relocate.c +++ b/arch/loongarch/kernel/relocate.c @@ -183,7 +183,7 @@ static inline void __init *determine_rel if (kaslr_disabled()) return destination;
- kernel_length = (long)_end - (long)_text; + kernel_length = (unsigned long)_end - (unsigned long)_text;
random_offset = get_random_boot() << 16; random_offset &= (CONFIG_RANDOMIZE_BASE_MAX_OFFSET - 1); @@ -232,7 +232,7 @@ unsigned long __init relocate_kernel(voi early_memunmap(cmdline, COMMAND_LINE_SIZE);
if (random_offset) { - kernel_length = (long)(_end) - (long)(_text); + kernel_length = (unsigned long)(_end) - (unsigned long)(_text);
/* Copy the kernel to it's new location */ memcpy(location_new, _text, kernel_length);