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linux/net/tls
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John Fastabend d85f017758 net: tls, fix sk_write_space NULL write when tx disabled 
The ctx->sk_write_space pointer is only set when TLS tx mode is enabled.
When running without TX mode its a null pointer but we still set the
sk sk_write_space pointer on close().

Fix the close path to only overwrite sk->sk_write_space when the current
pointer is to the tls_write_space function indicating the tls module should
clean it up properly as well.

Reported-by: Hillf Danton <hdanton@sina.com>
Cc: Ying Xue <ying.xue@windriver.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Fixes: 57c722e932 ("net/tls: swap sk_write_space on close")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
History 2019-08-15 12:40:15 -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.c net/tls: prevent skb_orphan() from leaking TLS plain text with offload 2019-08-08 22:39:35 -07:00
tls_device_fallback.c net/tls: fix socket wmem accounting on fallback with netem 2019-07-08 20:21:10 -07:00
tls_main.c net: tls, fix sk_write_space NULL write when tx disabled 2019-08-15 12:40:15 -07:00
tls_sw.c net/tls: remove sock unlock/lock around strp_done() 2019-07-22 16:04:16 +02:00