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dm cache: destroy migration_cache if cache target registration failed
Commit7e6358d244
("dm: fix various targets to dm_register_target after module __init resources created") inadvertently introduced this bug when it moved dm_register_target() after the call to KMEM_CACHE(). Fixes:7e6358d244
("dm: fix various targets to dm_register_target after module __init resources created") Cc: stable@vger.kernel.org Signed-off-by: Shenghui Wang <shhuiw@foxmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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@ -3484,14 +3484,13 @@ static int __init dm_cache_init(void)
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int r;
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migration_cache = KMEM_CACHE(dm_cache_migration, 0);
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if (!migration_cache) {
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dm_unregister_target(&cache_target);
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if (!migration_cache)
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return -ENOMEM;
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}
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r = dm_register_target(&cache_target);
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if (r) {
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DMERR("cache target registration failed: %d", r);
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kmem_cache_destroy(migration_cache);
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return r;
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}
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