net/tls: avoid potential deadlock in tls_set_device_offload_rx()
authorJakub Kicinski <jakub.kicinski@netronome.com>
Fri, 19 Apr 2019 23:51:38 +0000 (16:51 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 2 May 2019 07:59:01 +0000 (09:59 +0200)
commitd3bdd359fa53c1d577bc96677474c43bfb9090bd
tree444511db75d5f85ef2afeeb1100d4e902c5f52f8
parent041b3224e8f848b2024cae470ea49c46db92ffd3
net/tls: avoid potential deadlock in tls_set_device_offload_rx()

[ Upstream commit 62ef81d5632634d5e310ed25b9b940b2b6612b46 ]

If device supports offload, but offload fails tls_set_device_offload_rx()
will call tls_sw_free_resources_rx() which (unhelpfully) releases
and reacquires the socket lock.

For a small fix release and reacquire the device_offload_lock.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/tls/tls_device.c