[BUG] Two BUG warnings in net/core/dev.c

[BUG] Two BUG warnings in net/core/dev.c

[john stultz]

Both of these were seen on my laptop w/ the current (as of this writing)
-git tree using the e1000 driver after a suspend/resume cycle.

thanks
-john

BUG: warning at net/core/dev.c:1171/skb_checksum_help()
 [<c0103d69>] show_trace_log_lvl+0x149/0x170
 [<c01052bb>] show_trace+0x1b/0x20
 [<c01052e4>] dump_stack+0x24/0x30
 [<c03c7523>] skb_checksum_help+0x163/0x170
 [<c0439c15>] ip_nat_fn+0x1a5/0x210
 [<c0439fa5>] ip_nat_local_fn+0x65/0xf0
 [<c03db140>] nf_iterate+0x60/0x90
 [<c03db1cc>] nf_hook_slow+0x5c/0x100
 [<c03eca51>] ip_queue_xmit+0x1f1/0x4c0
 [<c03fd2af>] tcp_transmit_skb+0x3bf/0x7d0
 [<c03ff32f>] tcp_push_one+0x9f/0x120
 [<c03f4943>] tcp_sendmsg+0x393/0xbf0
 [<c0411595>] inet_sendmsg+0x35/0x60
 [<c03be06d>] sock_sendmsg+0xcd/0x100
 [<c03be3e3>] sys_sendto+0xd3/0x100
 [<c03be442>] sys_send+0x32/0x40
 [<c03bea32>] sys_socketcall+0x142/0x260
 [<c010320d>] sysenter_past_esp+0x56/0x8d
 [<b7fa8410>] 0xb7fa8410


BUG: warning at net/core/dev.c:1225/skb_gso_segment()
 [<c0103d69>] show_trace_log_lvl+0x149/0x170
 [<c01052bb>] show_trace+0x1b/0x20
 [<c01052e4>] dump_stack+0x24/0x30
 [<c03c8e8a>] skb_gso_segment+0x20a/0x210
 [<c03ca3bf>] dev_hard_start_xmit+0x15f/0x300
 [<c03d6cab>] __qdisc_run+0x7b/0x1f0
 [<c03ca687>] dev_queue_xmit+0x127/0x310
 [<c03d0ccc>] neigh_resolve_output+0xec/0x2a0
 [<c03ed490>] ip_output+0x170/0x260
 [<c03ecb06>] ip_queue_xmit+0x2a6/0x4c0
 [<c03fd2af>] tcp_transmit_skb+0x3bf/0x7d0
 [<c03ff32f>] tcp_push_one+0x9f/0x120
 [<c03f4943>] tcp_sendmsg+0x393/0xbf0
 [<c0411595>] inet_sendmsg+0x35/0x60
 [<c03be06d>] sock_sendmsg+0xcd/0x100
 [<c03be3e3>] sys_sendto+0xd3/0x100
 [<c03be442>] sys_send+0x32/0x40
 [<c03bea32>] sys_socketcall+0x142/0x260
 [<c010320d>] sysenter_past_esp+0x56/0x8d
 [<b7fa8410>] 0xb7fa8410

Re: [BUG] Two BUG warnings in net/core/dev.c

[Herbert Xu]

john stultz <johnstul@us.ibm.com> wrote:
> Both of these were seen on my laptop w/ the current (as of this writing)
> -git tree using the e1000 driver after a suspend/resume cycle.

It's just a reminder that we need to fix NAT to update checksums
incrementally.  You'll only see it once per boot.

> BUG: warning at net/core/dev.c:1171/skb_checksum_help()
> [<c0103d69>] show_trace_log_lvl+0x149/0x170
> [<c01052bb>] show_trace+0x1b/0x20
> [<c01052e4>] dump_stack+0x24/0x30
> [<c03c7523>] skb_checksum_help+0x163/0x170
> [<c0439c15>] ip_nat_fn+0x1a5/0x210

Of course, if anyone sees it with a backtrace that does not contain
ip_nat_fn, please let us know.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt