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authorGilad Ben-Yossef <gilad@benyossef.com>2017-05-18 16:29:24 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-05-23 12:45:11 +0800
commita5dfefb1c3f3db81662556393fd9283511e08430 (patch)
tree34d6e7ae619ec2d574edb548bce8831b22f8c247 /crypto/gcm.c
parente68368aed56324e2e38d4f6b044bb8cf82077fc2 (diff)
crypto: drbg - wait for crypto op not signal safe
drbg_kcapi_sym_ctr() was using wait_for_completion_interruptible() to wait for completion of async crypto op but if a signal occurs it may return before DMA ops of HW crypto provider finish, thus corrupting the output buffer. Resolve this by using wait_for_completion() instead. Reported-by: Eric Biggers <ebiggers3@gmail.com> Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> CC: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/gcm.c')
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