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SubjectRe: kernel panic while using netcat since linux-2.6.9
On Sun, Nov 07, 2004 at 02:01:40PM +0100, Ondrej Zary wrote:
> Ramsés Rodríguez Martínez wrote:
> >Hi,
> >Sorry i don't include any dump, but it seems kernel-patch-lkcd for 2.6.9 is
> >not available yet. I could handcopy the kernel-oops if you want. I think
> >it'll be something related with bind() as it fails with "netcat".
> >
> >The problem is only present with 2.6.9 (or at least not with 2.6.8 nor
> >2.6.5)
> >
> >------------------------
> >SCRIPT TO REPRODUCE:
> >
> >su
> >apt-get install nc
> >exit
> >nc -p2000 127.0.0.1 2000 # kernel panic
> >
> >------------------------
>
> It does the same thing for me. Here's the BUG output from serial console.

can you confirm does this patch fix the issue.
http://linux.bkbits.net:8080/linux-2.6/gnupatch@4175f00ayR2dZynZ8yUWYSVkL6Z5og

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
# 2004/10/19 21:56:42-07:00 herbert@gondor.apana.org.au
# [NET]: Make sure to copy TSO fields in copy_skb_header().
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/core/skbuff.c
# 2004/10/19 21:56:24-07:00 herbert@gondor.apana.org.au +2 -4
# [NET]: Make sure to copy TSO fields in copy_skb_header().
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
diff -Nru a/net/core/skbuff.c b/net/core/skbuff.c
--- a/net/core/skbuff.c 2004-11-07 05:16:05 -08:00
+++ b/net/core/skbuff.c 2004-11-07 05:16:05 -08:00
@@ -394,6 +394,8 @@
new->tc_index = old->tc_index;
#endif
atomic_set(&new->users, 1);
+ skb_shinfo(new)->tso_size = skb_shinfo(old)->tso_size;
+ skb_shinfo(new)->tso_segs = skb_shinfo(old)->tso_segs;
}

/**
@@ -483,8 +485,6 @@
}
skb_shinfo(n)->nr_frags = i;
}
- skb_shinfo(n)->tso_size = skb_shinfo(skb)->tso_size;
- skb_shinfo(n)->tso_segs = skb_shinfo(skb)->tso_segs;

if (skb_shinfo(skb)->frag_list) {
skb_shinfo(n)->frag_list = skb_shinfo(skb)->frag_list;
@@ -631,8 +631,6 @@
BUG();

copy_skb_header(n, skb);
- skb_shinfo(n)->tso_size = skb_shinfo(skb)->tso_size;
- skb_shinfo(n)->tso_segs = skb_shinfo(skb)->tso_segs;

return n;
}
-
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