diff options
author | Zhen Lei <thunder.leizhen@huawei.com> | 2021-07-22 11:03:52 +0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-18 13:43:44 +0200 |
commit | eae08fd62e287600bf44c37af89569d6bb829a17 (patch) | |
tree | 3fb28757fa6bdab19f5adf46ca7dd9b702bc4201 /kernel | |
parent | 015bd32cf6fb3562756e22cceec12f818ee0eead (diff) |
workqueue: Fix possible memory leaks in wq_numa_init()
[ Upstream commit f728c4a9e8405caae69d4bc1232c54ff57b5d20f ]
In error handling branch "if (WARN_ON(node == NUMA_NO_NODE))", the
previously allocated memories are not released. Doing this before
allocating memory eliminates memory leaks.
tj: Note that the condition only occurs when the arch code is pretty broken
and the WARN_ON might as well be BUG_ON().
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/workqueue.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index f148eacda55a..542c2d03dab6 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5902,6 +5902,13 @@ static void __init wq_numa_init(void) return; } + for_each_possible_cpu(cpu) { + if (WARN_ON(cpu_to_node(cpu) == NUMA_NO_NODE)) { + pr_warn("workqueue: NUMA node mapping not available for cpu%d, disabling NUMA support\n", cpu); + return; + } + } + wq_update_unbound_numa_attrs_buf = alloc_workqueue_attrs(); BUG_ON(!wq_update_unbound_numa_attrs_buf); @@ -5919,11 +5926,6 @@ static void __init wq_numa_init(void) for_each_possible_cpu(cpu) { node = cpu_to_node(cpu); - if (WARN_ON(node == NUMA_NO_NODE)) { - pr_warn("workqueue: NUMA node mapping not available for cpu%d, disabling NUMA support\n", cpu); - /* happens iff arch is bonkers, let's just proceed */ - return; - } cpumask_set_cpu(cpu, tbl[node]); } |