lib/test_meminit: add a kmem_cache_alloc_bulk() test
Make sure allocations from kmem_cache_alloc_bulk() and kmem_cache_free_bulk() are properly initialized. Link: http://lkml.kernel.org/r/20191007091605.30530-2-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Christoph Lameter <cl@linux.com> Cc: Laura Abbott <labbott@redhat.com> Cc: Thibaut Sautereau <thibaut@sautereau.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>alistair/sunxi64-5.4-dsi
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0f181f9fbe
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03a9349ac0
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@ -297,6 +297,32 @@ out:
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return 1;
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return 1;
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}
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}
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static int __init do_kmem_cache_size_bulk(int size, int *total_failures)
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{
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struct kmem_cache *c;
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int i, iter, maxiter = 1024;
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int num, bytes;
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bool fail = false;
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void *objects[10];
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c = kmem_cache_create("test_cache", size, size, 0, NULL);
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for (iter = 0; (iter < maxiter) && !fail; iter++) {
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num = kmem_cache_alloc_bulk(c, GFP_KERNEL, ARRAY_SIZE(objects),
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objects);
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for (i = 0; i < num; i++) {
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bytes = count_nonzero_bytes(objects[i], size);
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if (bytes)
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fail = true;
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fill_with_garbage(objects[i], size);
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}
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if (num)
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kmem_cache_free_bulk(c, num, objects);
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}
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*total_failures += fail;
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return 1;
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}
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/*
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/*
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* Test kmem_cache allocation by creating caches of different sizes, with and
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* Test kmem_cache allocation by creating caches of different sizes, with and
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* without constructors, with and without SLAB_TYPESAFE_BY_RCU.
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* without constructors, with and without SLAB_TYPESAFE_BY_RCU.
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@ -318,6 +344,7 @@ static int __init test_kmemcache(int *total_failures)
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num_tests += do_kmem_cache_size(size, ctor, rcu, zero,
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num_tests += do_kmem_cache_size(size, ctor, rcu, zero,
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&failures);
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&failures);
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}
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}
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num_tests += do_kmem_cache_size_bulk(size, &failures);
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}
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}
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REPORT_FAILURES_IN_FN();
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REPORT_FAILURES_IN_FN();
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*total_failures += failures;
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*total_failures += failures;
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