tree 8013f8beb39c83b80be0e40195005b0482cea69b
parent 62d0cfcb27cf755cebdc93ca95dabc83608007cd
author Herbert Xu <herbert@gondor.apana.org.au> 1165707928 +1100
committer Herbert Xu <herbert@gondor.apana.org.au> 1170800458 +1100

[CRYPTO] all: Check for usage in hard IRQ context

Using blkcipher/hash crypto operations in hard IRQ context can lead
to random memory corruption due to the reuse of kmap_atomic slots.
Since crypto operations were never meant to be used in hard IRQ
contexts, this patch checks for such usage and returns an error
before kmap_atomic is performed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>