From: ppalka <ppalka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 27 Apr 2016 21:18:05 +0000
Subject: [PATCH] Reduce nesting of parentheses in conditionals generated by
genattrtab
gcc/ChangeLog:
* genattrtab.c (write_test_expr): New parameter EMIT_PARENS
which defaults to true. Emit an outer pair of parentheses only if
EMIT_PARENS. When continuing a chain of && or || (or & or |),
don't emit parentheses for the right-hand operand.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@235536
gcc/arm generates so many parens it hits a bracket depth limited which is
enforced by clang. This reduces the number of parens generated and avoids the
need to increase bracket depth.
Fixes PR toolchain/53178 properly.
m_adj(m1, -(m1->m_len - roff));
if (m1 != m)
m->m_pkthdr.len -= (m1->m_len - roff);
This is wrong: m_adj will modify m1->m_len, so we're using a wrong value
when manually adjusting m->m_pkthdr.len.
Because of that, it is possible to exploit the attack I described in
uipc_mbuf.c::rev1.182. The exploit is more complicated, but works 100%
reliably.
should, but it looks like there are several places that can put M_PKTHDR
on secondary mbufs (PR/53189), so drop this assumption right now to
prevent further bugs.
The check is replaced by (m1 != m), which is equivalent to the previous
code: we want to modify m->m_pkthdr.len only when 'm' was not passed in
m_adj().
This allows us to stop using the rnewprocp argument in fork1(9).
The rnewprocp argument will be removed soon from the API, as it can cause
use-after-free scenarios.
No functional change intended.
Noted by <Mateusz Guzik>
Reference: http://mail-index.netbsd.org/tech-kern/2017/09/08/msg022267.html
Sponsored by <The NetBSD Foundation>
key_sad.sahlists doesn't work well for inbound packets because
its key includes source address. For the reason, the
look-up-table for the inbound packets is newly added.
The table has all sav whose state is MATURE or DYING and uses a
key calculated by destination address, protocol, and spi instead
of saidx.
reviewd ozaki-r@n.o, thanks.
An saidx of sah included in the list is unique so that
the search can use a hash list whose hash is calculated by
the saidx to find an sah quickly.
The hash list of the sahlits is used in FreeBSD, too.
reviewed by ozaki-r@n.o, thanks.
