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linux-sg2042
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[IPV6] route6/fib6: Don't panic a kmem_cache_create. 

If the kmem_cache_creation fails, the kernel will panic. It is
acceptable if the system is booting, but if the ipv6 protocol is
compiled as a module and it is loaded after the system has booted, do
we want to panic instead of just failing to initialize the protocol ?

The init function is now returning an error and this one is checked
for protocol initialization. So the ipv6 protocol will safely fails.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Lezcano 2007-12-07 00:45:16 -08:00 committed by David S. Miller
parent e2fddf5e96
commit f845ab6b7d
2 changed files with 8 additions and 2 deletions
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5
net/ipv6/ip6_fib.c
View File

@ -1478,8 +1478,11 @@ int __init fib6_init(void)
int ret;
fib6_node_kmem = kmem_cache_create("fib6_nodes",
sizeof(struct fib6_node),
0, SLAB_HWCACHE_ALIGN|SLAB_PANIC,
0, SLAB_HWCACHE_ALIGN,
NULL);
if (!fib6_node_kmem)
return -ENOMEM;
fib6_tables_init();
ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib);

5
net/ipv6/route.c
View File

@ -2474,7 +2474,10 @@ int __init ip6_route_init(void)
ip6_dst_ops.kmem_cachep =
kmem_cache_create("ip6_dst_cache", sizeof(struct rt6_info), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
SLAB_HWCACHE_ALIGN, NULL);
if (!ip6_dst_ops.kmem_cachep)
return -ENOMEM;
ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops.kmem_cachep;
ret = fib6_init();