diff options
| author | Horia Geantă <horia.geanta@nxp.com> | 2018-02-05 11:15:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-17 13:21:17 +0100 |
| commit | a96e820790253c8971ef08670c9c8dd43b619fda (patch) | |
| tree | b494f3e4ad16b869099147d6dcc01975b7aa6b4d /arch/x86/crypto | |
| parent | f2d4bed9eabf1636adbf538865e06876e18807e8 (diff) | |
crypto: caam - fix endless loop when DECO acquire fails
commit 225ece3e7dad4cfc44cca38ce7a3a80f255ea8f1 upstream.
In case DECO0 cannot be acquired - i.e. run_descriptor_deco0() fails
with -ENODEV, caam_probe() enters an endless loop:
run_descriptor_deco0
ret -ENODEV
-> instantiate_rng
-ENODEV, overwritten by -EAGAIN
ret -EAGAIN
-> caam_probe
-EAGAIN results in endless loop
It turns out the error path in instantiate_rng() is incorrect,
the checks are done in the wrong order.
Fixes: 1005bccd7a4a6 ("crypto: caam - enable instantiation of all RNG4 state handles")
Reported-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Suggested-by: Auer Lukas <lukas.auer@aisec.fraunhofer.de>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/crypto')
0 files changed, 0 insertions, 0 deletions