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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-07 11:30:25 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-08 09:14:13 +0200 |
| commit | 030f4e968741d65aea9cd5f7814d1164967801ef (patch) | |
| tree | f5bca6adaa4ba8f237cf0ef8a1e941e968b75ed0 /drivers/dma-buf | |
| parent | crypto: omap-des - Fix unmapping of dma channels (diff) | |
| download | linux-030f4e968741d65aea9cd5f7814d1164967801ef.tar.xz linux-030f4e968741d65aea9cd5f7814d1164967801ef.zip | |
crypto: nx - Fix reentrancy bugs
This patch fixes a host of reentrancy bugs in the nx driver. The
following algorithms are affected:
* CCM
* GCM
* CTR
* XCBC
* SHA256
* SHA512
The crypto API allows a single transform to be used by multiple
threads simultaneously. For example, IPsec will use a single tfm
to process packets for a given SA. As packets may arrive on
multiple CPUs that tfm must be reentrant.
The nx driver does try to deal with this by using a spin lock.
Unfortunately only the basic AES/CBC/ECB algorithms do this in
the correct way.
The symptom of these bugs may range from the generation of incorrect
output to memory corruption.
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/dma-buf')
0 files changed, 0 insertions, 0 deletions