x86/mm: Fix cpumask_of_node() error condition
authorPeter Zijlstra <peterz@infradead.org>
Tue, 3 Sep 2019 07:53:52 +0000 (09:53 +0200)
committerIngo Molnar <mingo@kernel.org>
Thu, 5 Sep 2019 11:03:04 +0000 (13:03 +0200)
commitbc04a049f058a472695aa22905d57e2b1f4c77d9
treed743d5d2a6cf490a3d7ff824e925fdb02ff0987e
parentaeb415fbe9f62e6db0fabd2023d39728ccc705fd
x86/mm: Fix cpumask_of_node() error condition

When CONFIG_DEBUG_PER_CPU_MAPS=y we validate that the @node argument of
cpumask_of_node() is a valid node_id. It however forgets to check for
negative numbers. Fix this by explicitly casting to unsigned int.

  (unsigned)node >= nr_node_ids

verifies: 0 <= node < nr_node_ids

Also ammend the error message to match the condition.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lkml.kernel.org/r/20190903075352.GY2369@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/mm/numa.c