tree e7eb8437b2d9d6f8b592019a768c27815e697cfd
parent 62ef81d5632634d5e310ed25b9b940b2b6612b46
author Jakub Kicinski <jakub.kicinski@netronome.com> 1555717939 -0700
committer David S. Miller <davem@davemloft.net> 1555817811 -0700

net/tls: don't leak IV and record seq when offload fails

When device refuses the offload in tls_set_device_offload_rx()
it calls tls_sw_free_resources_rx() to clean up software context
state.

Unfortunately, tls_sw_free_resources_rx() does not free all
the state tls_set_sw_offload() allocated - it leaks IV and
sequence number buffers.  All other code paths which lead to
tls_sw_release_resources_rx() (which tls_sw_free_resources_rx()
calls) free those right before the call.

Avoid the leak by moving freeing of iv and rec_seq into
tls_sw_release_resources_rx().

Fixes: 4799ac81e52a ("tls: Add rx inline crypto offload")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>