linux/net/tls
Jakub Kicinski e52972c11d net/tls: replace the sleeping lock around RX resync with a bit lock
Commit 38030d7cb7 ("net/tls: avoid NULL-deref on resync during device removal")
tried to fix a potential NULL-dereference by taking the
context rwsem.  Unfortunately the RX resync may get called
from soft IRQ, so we can't use the rwsem to protect from
the device disappearing.  Because we are guaranteed there
can be only one resync at a time (it's called from strparser)
use a bit to indicate resync is busy and make device
removal wait for the bit to get cleared.

Note that there is a leftover "flags" field in struct
tls_context already.

Fixes: 4799ac81e5 ("tls: Add rx inline crypto offload")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-04 13:34:37 -07:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
tls_device_fallback.c net/tls: avoid NULL pointer deref on nskb->sk in fallback 2019-05-01 11:37:56 -04:00
tls_device.c net/tls: replace the sleeping lock around RX resync with a bit lock 2019-06-04 13:34:37 -07:00
tls_main.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-04-25 23:52:29 -04:00
tls_sw.c net/tls: fix no wakeup on partial reads 2019-05-26 21:47:13 -07:00