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authorEric Biggers <ebiggers@google.com>2020-04-07 09:02:40 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2020-04-16 09:49:22 +0300
commitbeeb460cd12ac9b91640b484b6a52dcba9d9fc8f (patch)
tree960e172190cd68e1c4cb21024383afc0bc8379c0 /fs/kernfs
parent56b80bdee4a16cf330562801667a1e62fe7b9255 (diff)
downloadlinux-beeb460cd12ac9b91640b484b6a52dcba9d9fc8f.tar.xz
crypto: algapi - Avoid spurious modprobe on LOADED
Currently after any algorithm is registered and tested, there's an unnecessary request_module("cryptomgr") even if it's already loaded. Also, CRYPTO_MSG_ALG_LOADED is sent twice, and thus if the algorithm is "crct10dif", lib/crc-t10dif.c replaces the tfm twice rather than once. This occurs because CRYPTO_MSG_ALG_LOADED is sent using crypto_probing_notify(), which tries to load "cryptomgr" if the notification is not handled (NOTIFY_DONE). This doesn't make sense because "cryptomgr" doesn't handle this notification. Fix this by using crypto_notify() instead of crypto_probing_notify(). Fixes: dd8b083f9a5e ("crypto: api - Introduce notifier for new crypto algorithms") Cc: <stable@vger.kernel.org> # v4.20+ Cc: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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