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| author | Vlastimil Babka <vbabka@suse.cz> | 2024-05-27 11:01:28 +0200 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2024-05-28 09:27:50 +0200 |
| commit | a0a44d9175b349df2462089140fb7f292100bd7c (patch) | |
| tree | 20faa4951a20f8bd2a47e662c108fc897b59a148 /lib | |
| parent | 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 (diff) | |
| download | linux-a0a44d9175b349df2462089140fb7f292100bd7c.tar.gz linux-a0a44d9175b349df2462089140fb7f292100bd7c.tar.bz2 linux-a0a44d9175b349df2462089140fb7f292100bd7c.zip | |
mm, slab: don't wrap internal functions with alloc_hooks()
The functions __kmalloc_noprof(), kmalloc_large_noprof(),
kmalloc_trace_noprof() and their _node variants are all internal to the
implementations of kmalloc_noprof() and kmalloc_node_noprof() and are
only declared in the "public" slab.h and exported so that those
implementations can be static inline and distinguish the build-time
constant size variants. The only other users for some of the internal
functions are slub_kunit and fortify_kunit tests which make very
short-lived allocations.
Therefore we can stop wrapping them with the alloc_hooks() macro.
Instead add a __ prefix to all of them and a comment documenting these
as internal. Also rename __kmalloc_trace() to __kmalloc_cache() which is
more descriptive - it is a variant of __kmalloc() where the exact
kmalloc cache has been already determined.
The usage in fortify_kunit can be removed completely, as the internal
functions should be tested already through kmalloc() tests in the
test variant that passes non-constant allocation size.
Reported-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Kees Cook <keescook@chromium.org>
Reviewed-by: Kent Overstreet <kent.overstreet@linux.dev>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/fortify_kunit.c | 5 | ||||
| -rw-r--r-- | lib/slub_kunit.c | 2 |
2 files changed, 1 insertions, 6 deletions
diff --git a/lib/fortify_kunit.c b/lib/fortify_kunit.c index 39da5b3bc649..044f409ef856 100644 --- a/lib/fortify_kunit.c +++ b/lib/fortify_kunit.c @@ -234,11 +234,6 @@ static void fortify_test_alloc_size_##allocator##_dynamic(struct kunit *test) \ checker(expected_size, \ kmalloc_array_node(alloc_size, 1, gfp, NUMA_NO_NODE), \ kfree(p)); \ - checker(expected_size, __kmalloc(alloc_size, gfp), \ - kfree(p)); \ - checker(expected_size, \ - __kmalloc_node(alloc_size, gfp, NUMA_NO_NODE), \ - kfree(p)); \ \ orig = kmalloc(alloc_size, gfp); \ KUNIT_EXPECT_TRUE(test, orig != NULL); \ diff --git a/lib/slub_kunit.c b/lib/slub_kunit.c index 4ce960438806..e6667a28c014 100644 --- a/lib/slub_kunit.c +++ b/lib/slub_kunit.c @@ -140,7 +140,7 @@ static void test_kmalloc_redzone_access(struct kunit *test) { struct kmem_cache *s = test_kmem_cache_create("TestSlub_RZ_kmalloc", 32, SLAB_KMALLOC|SLAB_STORE_USER|SLAB_RED_ZONE); - u8 *p = kmalloc_trace(s, GFP_KERNEL, 18); + u8 *p = __kmalloc_cache_noprof(s, GFP_KERNEL, 18); kasan_disable_current(); |