Seeing this a lot on 2.6.18-rc4-mm3 with 2 different stack tracebacks (one for received packets, other for sending). I already picked up the fix for the ^ / confusion in fib_rules.c and that didn't help matters. [ 731.252000] BUG: warning at include/net/dst.h:154/dst_release() [ 731.252000] [<c01036d4>] dump_trace+0x64/0x1b2 [ 731.252000] [<c0103834>] show_trace_log_lvl+0x12/0x25 [ 731.252000] [<c0103d62>] show_trace+0xd/0x10 [ 731.252000] [<c0103dff>] dump_stack+0x19/0x1b [ 731.252000] [<c0347fe8>] fib6_rule_action+0x79/0xad [ 731.253000] [<c02dfe62>] fib_rules_lookup+0x4e/0x93 [ 731.255000] [<c0348065>] fib6_rule_lookup+0x2d/0x7d [ 731.256000] [<c032fe6d>] rt6_lookup+0x45/0x83 [ 731.257000] [<c032d9cd>] addrconf_prefix_rcv+0xf4/0x743 [ 731.258000] [<c0335410>] ndisc_rcv+0x7d5/0xaf3 [ 731.259000] [<c033ad0e>] icmpv6_rcv+0x767/0x7e9 [ 731.260000] [<c03286d4>] ip6_input+0x1e0/0x2a2 [ 731.262000] [<c03287c8>] ip6_mc_input+0x32/0x40 [ 731.263000] [<c0328bf6>] ipv6_rcv+0x19f/0x1cd [ 731.264000] [<c02d480b>] netif_receive_skb+0x143/0x1b6 [ 731.265000] [<c02d5bb0>] process_backlog+0x71/0xf3 [ 731.266000] [<c02d5a92>] net_rx_action+0x56/0xcf [ 731.267000] [<c0116d3c>] __do_softirq+0x38/0x7a [ 731.267000] [<c010460c>] do_softirq+0x3e/0x87 [ 731.267000] [<c0116cf8>] irq_exit+0x28/0x34 [ 731.267000] [<c01045c1>] do_IRQ+0xab/0xb8 [ 731.267000] [<c010323a>] common_interrupt+0x1a/0x20 [ 1498.555000] BUG: warning at include/net/dst.h:154/dst_release() [ 1498.555000] [<c01036d4>] dump_trace+0x64/0x1b2 [ 1498.555000] [<c0103834>] show_trace_log_lvl+0x12/0x25 [ 1498.555000] [<c0103d62>] show_trace+0xd/0x10 [ 1498.555000] [<c0103dff>] dump_stack+0x19/0x1b [ 1498.555000] [<c0347db8>] fib6_rule_action+0x79/0xad [ 1498.557000] [<c02dfc32>] fib_rules_lookup+0x4e/0x93 [ 1498.558000] [<c0347e35>] fib6_rule_lookup+0x2d/0x7d [ 1498.560000] [<c032fc9c>] ip6_route_output+0x21/0x24 [ 1498.561000] [<c032647c>] ip6_dst_lookup_tail+0x19/0x92 [ 1498.562000] [<c0326503>] ip6_dst_lookup+0xe/0x10 [ 1498.563000] [<c0344727>] ip6_datagram_connect+0x322/0x50a [ 1498.565000] [<c0309850>] inet_dgram_connect+0x4b/0x55 [ 1498.566000] [<c02cc970>] sys_connect+0x67/0x84 [ 1498.567000] [<c02ccfeb>] sys_socketcall+0x8c/0x186 [ 1498.568000] [<c01028cf>] syscall_call+0x7/0xb [ 1498.568000] DWARF2 unwinder stuck at syscall_call+0x7/0xb
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