Vanille 2.6.19 oops'es at boot. With the patch from http://marc.theaimsgroup.com/?l=linux-kernel&m=116485303623545&w=2 it boots but IPv6 stopps working. I can't ping/traceroute any host. Network setup has not changed.
> On Sat, 2 Dec 2006 11:23:54 -0800 bugme-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=7621 > > Summary: 2.6.19 breaks IPv6 > Kernel Version: 2.6.19 > Status: NEW > Severity: high > Owner: yoshfuji@linux-ipv6.org > Submitter: jasmin-bugs@pacifica.ch > > > Vanille 2.6.19 oops'es at boot. With the patch from > http://marc.theaimsgroup.com/?l=linux-kernel&m=116485303623545&w=2 it boots > but IPv6 stopps working. I can't ping/traceroute any host. Network setup has > not changed. > > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is.
Reply-To: davem@davemloft.net From: Andrew Morton <akpm@osdl.org> Date: Sat, 2 Dec 2006 19:20:09 -0800 > > On Sat, 2 Dec 2006 11:23:54 -0800 bugme-daemon@bugzilla.kernel.org wrote: > > http://bugzilla.kernel.org/show_bug.cgi?id=7621 > > > > Summary: 2.6.19 breaks IPv6 > > Kernel Version: 2.6.19 > > Status: NEW > > Severity: high > > Owner: yoshfuji@linux-ipv6.org > > Submitter: jasmin-bugs@pacifica.ch > > > > > > Vanille 2.6.19 oops'es at boot. With the patch from > > http://marc.theaimsgroup.com/?l=linux-kernel&m=116485303623545&w=2 it boots > > but IPv6 stopps working. I can't ping/traceroute any host. Network setup has > > not changed. > > > > ------- You are receiving this mail because: ------- > > You are on the CC list for the bug, or are watching someone who is. As YOSHIFUJI Hideaki noticed, changing 'len' influences the argument to ip6_nd_hdr(), which is not a side effect we wanted. We only wanted the allocation length to be increased by sizeof(struct ipv6hdr). This is the correct version of the fix. commit 6e38433357e2381bb278a418fb7e2fd201475101 Author: David S. Miller <davem@sunset.davemloft.net> Date: Sat Dec 2 21:00:06 2006 -0800 [IPV6] NDISC: Calculate packet length correctly for allocation. MAX_HEADER does not include the ipv6 header length in it, so we need to add it in explicitly. With help from YOSHIFUJI Hideaki. Signed-off-by: David S. Miller <davem@davemloft.net> diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 73eb8c3..89d527e 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -472,7 +472,9 @@ static void ndisc_send_na(struct net_dev inc_opt = 0; } - skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev), + skb = sock_alloc_send_skb(sk, + (MAX_HEADER + sizeof(struct ipv6hdr) + + len + LL_RESERVED_SPACE(dev)), 1, &err); if (skb == NULL) { @@ -561,7 +563,9 @@ void ndisc_send_ns(struct net_device *de if (send_llinfo) len += ndisc_opt_addr_space(dev); - skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev), + skb = sock_alloc_send_skb(sk, + (MAX_HEADER + sizeof(struct ipv6hdr) + + len + LL_RESERVED_SPACE(dev)), 1, &err); if (skb == NULL) { ND_PRINTK0(KERN_ERR @@ -636,7 +640,9 @@ void ndisc_send_rs(struct net_device *de if (dev->addr_len) len += ndisc_opt_addr_space(dev); - skb = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev), + skb = sock_alloc_send_skb(sk, + (MAX_HEADER + sizeof(struct ipv6hdr) + + len + LL_RESERVED_SPACE(dev)), 1, &err); if (skb == NULL) { ND_PRINTK0(KERN_ERR @@ -1446,7 +1452,9 @@ void ndisc_send_redirect(struct sk_buff rd_len &= ~0x7; len += rd_len; - buff = sock_alloc_send_skb(sk, MAX_HEADER + len + LL_RESERVED_SPACE(dev), + buff = sock_alloc_send_skb(sk, + (MAX_HEADER + sizeof(struct ipv6hdr) + + len + LL_RESERVED_SPACE(dev)), 1, &err); if (buff == NULL) { ND_PRINTK0(KERN_ERR
Now it works! Thanks :)