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Date: Fri, 01 Jul 2016 04:03:41 -0400 (EDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: luto@...capital.net, herbert@...dor.apana.org.au, netdev@...r.kernel.org Subject: Re: [PATCH v2 net-next] tcp: md5: use kmalloc() backed scratch areas From: Eric Dumazet <eric.dumazet@...il.com> Date: Mon, 27 Jun 2016 18:51:53 +0200 > From: Eric Dumazet <edumazet@...gle.com> > > 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@...gle.com> > Reported-by: Andy Lutomirski <luto@...capital.net> Applied, thanks.
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