linux_dsm_epyc7002/net/ipv6
Arnd Bergmann ca79bec237 ipv6 sit: work around bogus gcc-8 -Wrestrict warning
gcc-8 has a new warning that detects overlapping input and output arguments
in memcpy(). It triggers for sit_init_net() calling ipip6_tunnel_clone_6rd(),
which is actually correct:

net/ipv6/sit.c: In function 'sit_init_net':
net/ipv6/sit.c:192:3: error: 'memcpy' source argument is the same as destination [-Werror=restrict]

The problem here is that the logic detecting the memcpy() arguments finds them
to be the same, but the conditional that tests for the input and output of
ipip6_tunnel_clone_6rd() to be identical is not a compile-time constant.

We know that netdev_priv(t->dev) is the same as t for a tunnel device,
and comparing "dev" directly here lets the compiler figure out as well
that 'dev == sitn->fb_tunnel_dev' when called from sit_init_net(), so
it no longer warns.

This code is old, so Cc stable to make sure that we don't get the warning
for older kernels built with new gcc.

Cc: Martin Sebor <msebor@gmail.com>
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83456
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-23 10:53:26 -05:00
..
ila
netfilter netfilter: x_tables: use pr ratelimiting in all remaining spots 2018-02-14 21:05:38 +01:00
addrconf_core.c
addrconf.c ipv6: addrconf: break critical section in addrconf_verify_rtnl() 2018-01-29 14:23:38 -05:00
addrlabel.c
af_inet6.c ipv6: Fix SO_REUSEPORT UDP socket with implicit sk_ipv6only 2018-01-29 11:37:40 -05:00
ah6.c
anycast.c
calipso.c
datagram.c
esp6_offload.c
esp6.c
exthdrs_core.c
exthdrs_offload.c
exthdrs.c
fib6_notifier.c
fib6_rules.c
fou6.c
icmp.c
inet6_connection_sock.c
inet6_hashtables.c
ip6_checksum.c udplite: fix partial checksum initialization 2018-02-16 15:57:42 -05:00
ip6_fib.c
ip6_flowlabel.c
ip6_gre.c net: erspan: fix erspan config overwrite 2018-02-06 11:32:49 -05:00
ip6_icmp.c
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c
ip6_tunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-29 10:15:51 -05:00
ip6_udp_tunnel.c
ip6_vti.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-29 10:15:51 -05:00
ip6mr.c ip6mr: fix stale iterator 2018-01-31 10:26:30 -05:00
ipcomp6.c
ipv6_sockglue.c netfilter: drop outermost socket lock in getsockopt() 2018-02-14 20:44:42 +01:00
Kconfig
Makefile
mcast_snoop.c
mcast.c build_bug.h: remove BUILD_BUG_ON_NULL() 2018-02-06 18:32:46 -08:00
mip6.c
ndisc.c net: ipv6: send unsolicited NA after DAD 2018-01-29 14:18:38 -05:00
netfilter.c
output_core.c
ping.c
proc.c
protocol.c
raw.c Currently, hardened usercopy performs dynamic bounds checking on slab 2018-02-03 16:25:42 -08:00
reassembly.c
route.c net/ipv6: onlink nexthop checks should default to main table 2018-02-07 21:52:42 -05:00
seg6_hmac.c
seg6_iptunnel.c
seg6_local.c
seg6.c
sit.c ipv6 sit: work around bogus gcc-8 -Wrestrict warning 2018-02-23 10:53:26 -05:00
syncookies.c
sysctl_net_ipv6.c
tcp_ipv6.c tcp: tracepoint: only call trace_tcp_send_reset with full socket 2018-02-07 22:00:42 -05:00
tcpv6_offload.c
tunnel6.c
udp_impl.h
udp_offload.c
udp.c
udplite.c
xfrm6_input.c
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c
xfrm6_output.c
xfrm6_policy.c
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c