On Wed, Feb 01, 2006 at 01:08:33PM -0500, Dave Jones wrote:
 > I managed to get a box running 2.6.16rc1-git4 to spit this out..
 > 
 >               Dave
 > 
 > UDP: bad checksum. From 192.168.79.115:43047 to 192.168.76.106:61494 ulen 
 > 1083
 > Badness in dst_release at include/net/dst.h:154 (Not tainted)
 >  [<c029d580>] __kfree_skb+0x36/0xdd
 >  [<c02ba807>] ip_frag_destroy+0xe2/0x101     [<c02ba8d9>] 
 > ip_defrag+0xb3/0xad1
 >  [<c015fa47>] cache_alloc_debugcheck_after+0xc1/0xf9     [<c02ba315>] 
 > ip_local_deliver+0x1f/0x1fe
 >  [<c02ba27f>] ip_rcv+0x401/0x478     [<c02a0d70>] 
 > netif_receive_skb+0x211/0x259
 >  [<c02a2283>] process_backlog+0x7a/0x100     [<c02a23a2>] 
 > net_rx_action+0x99/0x170
 >  [<c0127ac8>] __do_softirq+0x58/0xc2     [<c0105f03>] do_softirq+0x46/0x4e
 >  =======================
 >  [<c01047f4>] apic_timer_interrupt+0x1c/0x24     [<c0102db1>] 
 > default_idle+0x0/0x55
 >  [<c0102ddd>] default_idle+0x2c/0x55     [<c0102e95>] cpu_idle+0x8f/0xa8
 >  [<c03ce684>] start_kernel+0x301/0x307    <4>printk: 267 messages suppressed.

Here's a second flavour.

Badness in dst_release at include/net/dst.h:154 (Not tainted)
 [<c029d580>] __kfree_skb+0x36/0xdd     [<c02ba2eb>] ip_rcv+0x46d/0x478
 [<c02a0d70>] netif_receive_skb+0x211/0x259     [<c02a2283>] 
process_backlog+0x7a/0x100
 [<c02a23a2>] net_rx_action+0x99/0x170     [<c0127ac8>] __do_softirq+0x58/0xc2
 [<c0105f03>] do_softirq+0x46/0x4e    <0> =======================
 [<c0105eb4>] do_IRQ+0x72/0x7b
 [<c0104766>] common_interrupt+0x1a/0x20     [<c0102db1>] default_idle+0x0/0x55
 [<c0102ddd>] default_idle+0x2c/0x55     [<c0102e95>] cpu_idle+0x8f/0xa8
 [<c03ce684>] start_kernel+0x301/0x307    Badness in dst_release at 
include/net/dst.h:154 (Not tainted)
 [<c029d580>] __kfree_skb+0x36/0xdd
 [<c02ba807>] ip_frag_destroy+0xe2/0x101     [<c02ba8d9>] ip_defrag+0xb3/0xad1
 [<c015fa47>] cache_alloc_debugcheck_after+0xc1/0xf9     [<c02ba315>] 
ip_local_deliver+0x1f/0x1fe
 [<c02ba27f>] ip_rcv+0x401/0x478     [<c02a0d70>] netif_receive_skb+0x211/0x259
 [<c02a2283>] process_backlog+0x7a/0x100     [<c02a23a2>] 
net_rx_action+0x99/0x170
 [<c0127ac8>] __do_softirq+0x58/0xc2     [<c0105f03>] do_softirq+0x46/0x4e

These are incredibly easy to trigger with 'isic' for anyone wanting to chase 
these down.
In the space of a 3 day test, there are 9573 instances of that Badness message.

                Dave

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