]> git.baikalelectronics.ru Git - kernel.git/commit
tcp: md5: use kmalloc() backed scratch areas
authorEric Dumazet <edumazet@google.com>
Mon, 27 Jun 2016 16:51:53 +0000 (18:51 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 1 Jul 2016 08:02:55 +0000 (04:02 -0400)
commitf82414864d798fa7ee74fbdfd202cd42427b8cd0
treebf400027c33a83030519e00b0c391e61e29a5566
parent97709b5480f8ceb03590fb09ab4794483a428c69
tcp: md5: use kmalloc() backed scratch areas

Some arches have virtually mapped kernel stacks, or will soon have.

tcp_md5_hash_header() uses an automatic variable to copy tcp header
before mangling th->check and calling crypto function, which might
be problematic on such arches.

David says that using percpu storage is also problematic on non SMP
builds.

Just use kmalloc() to allocate scratch areas.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/tcp.h
net/ipv4/tcp.c
net/ipv4/tcp_ipv4.c
net/ipv6/tcp_ipv6.c