diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-10-16 07:37:27 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-28 10:14:16 -0700 |
| commit | dd2c50efa9941fe7393b5f490eeef68f18916211 (patch) | |
| tree | 44296428b9215d6b77b51bd7e3441edcb5873358 /net/ipv6 | |
| parent | 259c5a7fd824ebca122f04fc4202b88896f31d26 (diff) | |
ipv6: addrconf: fix /proc/net/if_inet6
[ Upstream commit 9f0d3c2781baa1102108e16efbe640dd74564a7c ]
Commit 1d5783030a1 (ipv6/addrconf: speedup /proc/net/if_inet6 filling)
added bugs hiding some devices from if_inet6 and breaking applications.
"ip -6 addr" could still display all IPv6 addresses, while "ifconfig -a"
couldnt.
One way to reproduce the bug is by starting in a shell :
unshare -n /bin/bash
ifconfig lo up
And in original net namespace, lo device disappeared from if_inet6
Reported-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Tested-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mihai Maruseac <mihai.maruseac@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 5ec60699c671..468a5ce6e9d2 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3095,14 +3095,15 @@ static struct inet6_ifaddr *if6_get_first(struct seq_file *seq, loff_t pos) struct hlist_node *n; hlist_for_each_entry_rcu_bh(ifa, n, &inet6_addr_lst[state->bucket], addr_lst) { + if (!net_eq(dev_net(ifa->idev->dev), net)) + continue; /* sync with offset */ if (p < state->offset) { p++; continue; } state->offset++; - if (net_eq(dev_net(ifa->idev->dev), net)) - return ifa; + return ifa; } /* prepare for next bucket */ @@ -3120,18 +3121,20 @@ static struct inet6_ifaddr *if6_get_next(struct seq_file *seq, struct hlist_node *n = &ifa->addr_lst; hlist_for_each_entry_continue_rcu_bh(ifa, n, addr_lst) { + if (!net_eq(dev_net(ifa->idev->dev), net)) + continue; state->offset++; - if (net_eq(dev_net(ifa->idev->dev), net)) - return ifa; + return ifa; } while (++state->bucket < IN6_ADDR_HSIZE) { state->offset = 0; hlist_for_each_entry_rcu_bh(ifa, n, &inet6_addr_lst[state->bucket], addr_lst) { + if (!net_eq(dev_net(ifa->idev->dev), net)) + continue; state->offset++; - if (net_eq(dev_net(ifa->idev->dev), net)) - return ifa; + return ifa; } } |