Eric Dumazet 351050ecd6 kcm: do not attach PF_KCM sockets to avoid deadlock ...

syzkaller had no problem to trigger a deadlock, attaching a KCM socket
to another one (or itself). (original syzkaller report was a very
confusing lockdep splat during a sendmsg())

It seems KCM claims to only support TCP, but no enforcement is done,
so we might need to add additional checks.

Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-08-30 15:55:10 -07:00

..

kcmproc.c

net: convert sock.sk_wmem_alloc from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

kcmsock.c

kcm: do not attach PF_KCM sockets to avoid deadlock

2017-08-30 15:55:10 -07:00

Kconfig

kcm: Use stream parser

2016-08-17 19:36:23 -04:00

Makefile

kcm: Add statistics and proc interfaces

2016-03-09 16:36:14 -05:00