ipv6: fix sparse warning on rt6i_node

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commit 4e587ea71b upstream.

Commit c5cff8561d adds rcu grace period before freeing fib6_node. This
generates a new sparse warning on rt->rt6i_node related code:
  net/ipv6/route.c:1394:30: error: incompatible types in comparison
  expression (different address spaces)
  ./include/net/ip6_fib.h:187:14: error: incompatible types in comparison
  expression (different address spaces)

This commit adds "__rcu" tag for rt6i_node and makes sure corresponding
rcu API is used for it.
After this fix, sparse no longer generates the above warning.

Fixes: c5cff8561d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: drop changes in rt6_cache_allowed_for_pmtu()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

This commit is contained in:

Wei Wang 2017-08-25 15:03:10 -07:00 • committed by Ben Hutchings

parent cdf3de08e9

commit 0933273ce7

3 changed files with 9 additions and 6 deletions

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2

include/net/ip6_fib.h

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2

net/ipv6/addrconf.c

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11

net/ipv6/ip6_fib.c

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