On Wed, Aug 22, 2007 at 05:41:11PM +0200, Adrian Bunk wrote:
> On Wed, Aug 22, 2007 at 05:30:13PM +0200, Gabriel C wrote:
> > Got it with a randconfig ( http://194.231.229.228/kernel/mm/2.6.23-rc3-mm1/r/randconfig-8 )
> >
> > ...
> >
> > net/ipv4/fib_trie.c: In function 'trie_rebalance':
> > net/ipv4/fib_trie.c:969: error: lvalue required as unary '&' operand
> > net/ipv4/fib_trie.c:971: error: lvalue required as unary '&' operand
> > net/ipv4/fib_trie.c:977: error: lvalue required as unary '&' operand
> > net/ipv4/fib_trie.c:980: error: lvalue required as unary '&' operand
> >...
>
> Side effect of the git-net removal, temporarily removing
> immunize-rcu_dereference-against-crazy-compiler-writers.patch should
> work around it.
Alternatively, the following one-line patch to net/ipv4/fib_trie.c could
be used.
Signed-off-by: Paul E. McKenney <[email protected]>
---
fib_trie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -urpNa -X dontdiff linux-2.6.23-rc3-mm1/net/ipv4/fib_trie.c linux-2.6.23-rc3-mm1.compile/net/ipv4/fib_trie.c
--- linux-2.6.23-rc3-mm1/net/ipv4/fib_trie.c 2007-08-22 09:20:33.000000000 -0700
+++ linux-2.6.23-rc3-mm1.compile/net/ipv4/fib_trie.c 2007-08-22 09:47:33.000000000 -0700
@@ -94,7 +94,7 @@ typedef unsigned int t_key;
#define T_LEAF 1
#define NODE_TYPE_MASK 0x1UL
#define NODE_PARENT(node) \
- ((struct tnode *)rcu_dereference(((node)->parent & ~NODE_TYPE_MASK)))
+ ((struct tnode *)(rcu_dereference((node)->parent) & ~NODE_TYPE_MASK))
#define NODE_TYPE(node) ((node)->parent & NODE_TYPE_MASK)
-
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