| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 201/306] sched/topology: Fix off by one bug | Date | Wed, 27 Nov 2019 21:30:51 +0100 |
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From: Peter Zijlstra <peterz@infradead.org>
[ Upstream commit 993f0b0510dad98b4e6e39506834dab0d13fd539 ]
With the addition of the NUMA identity level, we increased @level by one and will run off the end of the array in the distance sort loop.
Fixed: 051f3ca02e46 ("sched/topology: Introduce NUMA identity node sched domain") Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- kernel/sched/topology.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index c0a7514649715..74b694392f2fd 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1329,7 +1329,7 @@ void sched_init_numa(void) int level = 0; int i, j, k; - sched_domains_numa_distance = kzalloc(sizeof(int) * nr_node_ids, GFP_KERNEL); + sched_domains_numa_distance = kzalloc(sizeof(int) * (nr_node_ids + 1), GFP_KERNEL); if (!sched_domains_numa_distance) return; -- 2.20.1
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