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author | Eric Biggers <ebiggers@google.com> | 2019-04-12 06:57:42 +0200 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-18 16:15:03 +0200 |
commit | c4741b23059794bd99beef0f700103b0d983b3fd (patch) | |
tree | 8db3440418a9c3ed32d57c2c2a35340479d3cc44 /crypto/algboss.c | |
parent | crypto: testmgr - fuzz AEADs against their generic implementation (diff) | |
download | linux-c4741b23059794bd99beef0f700103b0d983b3fd.tar.xz linux-c4741b23059794bd99beef0f700103b0d983b3fd.zip |
crypto: run initcalls for generic implementations earlier
Use subsys_initcall for registration of all templates and generic
algorithm implementations, rather than module_init. Then change
cryptomgr to use arch_initcall, to place it before the subsys_initcalls.
This is needed so that when both a generic and optimized implementation
of an algorithm are built into the kernel (not loadable modules), the
generic implementation is registered before the optimized one.
Otherwise, the self-tests for the optimized implementation are unable to
allocate the generic implementation for the new comparison fuzz tests.
Note that on arm, a side effect of this change is that self-tests for
generic implementations may run before the unaligned access handler has
been installed. So, unaligned accesses will crash the kernel. This is
arguably a good thing as it makes it easier to detect that type of bug.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algboss.c')
-rw-r--r-- | crypto/algboss.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/crypto/algboss.c b/crypto/algboss.c index 527b44d0af21..bb97cfb38836 100644 --- a/crypto/algboss.c +++ b/crypto/algboss.c @@ -296,7 +296,13 @@ static void __exit cryptomgr_exit(void) BUG_ON(err); } -subsys_initcall(cryptomgr_init); +/* + * This is arch_initcall() so that the crypto self-tests are run on algorithms + * registered early by subsys_initcall(). subsys_initcall() is needed for + * generic implementations so that they're available for comparison tests when + * other implementations are registered later by module_init(). + */ +arch_initcall(cryptomgr_init); module_exit(cryptomgr_exit); MODULE_LICENSE("GPL"); |