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If the parameter 'p' is passed as NULL, it could lead to an uninitialized or invalid memory access during parsing. This patch adds a NULL pointer check at the beginning of the function to return early if no argument is provided, ensuring system stability during the early boot process. Signed-off-by: Austin Kim --- arch/arm/kernel/setup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 0bfd66c7a..b718a7df3 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -830,6 +830,8 @@ static int __init early_mem(char *p) u64 start; char *endp; + if (!p) + return 1; /* * If the user specifies memory size, we * blow away any automatically generated -- 2.34.1