Commit 296dc580 authored Dec 08, 2016 by Dan Carpenter Committed by Thomas Gleixner Dec 10, 2016

x86/ldt: Make a size argument unsigned



My static checker complains that we put an upper bound on the "size"
argument but not a lower bound.  The checker is not smart enough to know
the possible ranges of "old_mm->context.ldt->size" from
init_new_context_ldt() so it thinks maybe it could be negative.

Let's make it unsigned to silence the warning and future proof the code
a bit.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: kernel-janitors@vger.kernel.org
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20161208105602.GA11382@elgon.mountain


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 810ac7b7

arch/x86/kernel/ldt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -34,7 +34,7 @@ static void flush_ldt(void *current_mm)
		}

		/* The caller must call finalize_ldt_struct on the result. LDT starts zeroed. */
		static struct ldt_struct *alloc_ldt_struct(int size)
		static struct ldt_struct *alloc_ldt_struct(unsigned int size)
		{
		struct ldt_struct *new_ldt;
		int alloc_size;

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