WARNING: at net/core/skbuff, tainted or not tainted the kern
I'm getting this message at boot using CentOS 6.3 and the latest kernel from linode.
> –----------[ cut here ]–----------
WARNING: at net/core/skbuff.c:3448 skbtrycoalesce+0x1f2/0x2fe()
Modules linked in:
Pid: 0, comm: swapper/0 Not tainted 3.6.5-x86_64-linode28 #1
Call Trace:
[ ] warnslowpathcommon+0x80/0x98 [
] warnslowpathnull+0x15/0x17 [
] skbtrycoalesce+0x1f2/0x2fe [
] ? iptdotable+0x370/0x39c [
] tcptrycoalesce+0x4c/0xa4 [
] tcpqueuercv+0x52/0x9a [
] tcprcvestablished+0x367/0x4f6 [
] tcpv4do_rcv+0xc1/0x207 [
] tcpv4rcv+0x469/0x71e [
] ? nfhookslow+0x67/0xfa [
] ? T.1083+0x4f/0x4f [
] iplocaldeliver_finish+0x13d/0x1ae [
] ? T.1083+0x4f/0x4f [
] T.1084+0x4c/0x53 [
] iplocaldeliver+0x49/0x4d [
] iprcvfinish+0x2c6/0x2de [
] ? inetdelprotocol+0x37/0x37 [
] T.1084+0x4c/0x53 [
] ip_rcv+0x237/0x264 [
] _netifreceive_skb+0x41e/0x46d [
] netifreceiveskb+0x71/0x78 [
] handleincomingqueue+0x54/0xc9 [
] xennet_poll+0x4ec/0x5b6 [
] ? devkfreeskb_irq+0x57/0x5b [
] netrxaction+0xb6/0x22f [
] ? rawspin_lock+0x9/0xd [
] ? infoforirq+0x9/0x19 [
] _dosoftirq+0xde/0x1d6 [
] ? handleedgeirq+0xb8/0xca [
] call_softirq+0x1c/0x30 [
] do_softirq+0x41/0x7e [
] irq_exit+0x44/0xb2 [
] xenevtchndo_upcall+0x2f/0x3d [
] xendohypervisor_callback+0x1e/0x30
[ ] ? hypercall_page+0x3aa/0x1000 [
] ? hypercall_page+0x3aa/0x1000 [
] ? xensafehalt+0x10/0x1a [
] ? default_idle+0x4b/0x85 [
] ? cpu_idle+0x65/0xa1 [
] ? rest_init+0x6d/0x6f [
] ? start_kernel+0x337/0x344 [
] ? kernel_init+0x130/0x130 [
] ? x8664start_reservations+0xb8/0xbd [
] ? xenstartkernel+0x3b7/0x3be –-[ end trace f15db969626eafe7 ]–-
What does it means?
Thanks.
2 Replies
There doesn't seem to be any ill effects – the affected Linode runs fine.
Dec 23 10:13:53 mars kernel: ------------[ cut here ]------------
Dec 23 10:13:53 mars kernel: WARNING: at net/core/skbuff.c:3448 skb_try_coalesce+0x2cf/0x300()
Dec 23 10:13:53 mars kernel: Modules linked in:
Dec 23 10:13:53 mars kernel: Pid: 0, comm: swapper/0 Not tainted 3.6.5-linode47 #1
Dec 23 10:13:53 mars kernel: Call Trace:
Dec 23 10:13:53 mars kernel: [<c0130fd8>] ? warn_slowpath_common+0x78/0xb0
Dec 23 10:13:53 mars kernel: [<c05c0faf>] ? skb_try_coalesce+0x2cf/0x300
Dec 23 10:13:53 mars kernel: [<c05c0faf>] ? skb_try_coalesce+0x2cf/0x300
Dec 23 10:13:53 mars kernel: [<c013102b>] ? warn_slowpath_null+0x1b/0x20
Dec 23 10:13:53 mars kernel: [<c05c0faf>] ? skb_try_coalesce+0x2cf/0x300
Dec 23 10:13:53 mars kernel: [<c066df0c>] ? tcp_queue_rcv+0xdc/0x130
Dec 23 10:13:53 mars kernel: [<c06716f2>] ? tcp_rcv_established+0x222/0x5c0
Dec 23 10:13:53 mars kernel: [<c0659b40>] ? ip_rcv+0x330/0x330
Dec 23 10:13:53 mars kernel: [<c06788e1>] ? tcp_v4_do_rcv+0xf1/0x1e0
Dec 23 10:13:53 mars kernel: [<c06790d5>] ? tcp_v4_rcv+0x705/0x7f0
Dec 23 10:13:53 mars kernel: [<c0659b40>] ? ip_rcv+0x330/0x330
Dec 23 10:13:53 mars kernel: [<c0659bd8>] ? ip_local_deliver_finish+0x98/0x220
Dec 23 10:13:53 mars kernel: [<c0659b40>] ? ip_rcv+0x330/0x330
Dec 23 10:13:53 mars kernel: [<c06595eb>] ? ip_rcv_finish+0xeb/0x310
Dec 23 10:13:53 mars kernel: [<c0659500>] ? inet_del_protocol+0x30/0x30
Dec 23 10:13:53 mars kernel: [<c05c86fa>] ? __netif_receive_skb+0x41a/0x590
Dec 23 10:13:53 mars kernel: [<c05ca0bf>] ? netif_receive_skb+0x1f/0x70
Dec 23 10:13:53 mars kernel: [<c0561149>] ? handle_incoming_queue+0x179/0x260
Dec 23 10:13:53 mars kernel: [<c0561454>] ? xennet_poll+0x224/0x540
Dec 23 10:13:53 mars kernel: [<c0190000>] ? prctl_set_seccomp+0x70/0x80
Dec 23 10:13:53 mars kernel: [<c05caa0a>] ? net_rx_action+0xea/0x1a0
Dec 23 10:13:53 mars kernel: [<c0138720>] ? __do_softirq+0x90/0x140
Dec 23 10:13:53 mars kernel: [<c0138690>] ? irq_enter+0x70/0x70
Dec 23 10:13:53 mars kernel: <irq>[<c01384e6>] ? irq_exit+0x66/0x90
Dec 23 10:13:53 mars kernel: [<c04e8a1d>] ? xen_evtchn_do_upcall+0x1d/0x30
Dec 23 10:13:53 mars kernel: [<c076d887>] ? xen_do_upcall+0x7/0xc
Dec 23 10:13:53 mars kernel: [<c01013a7>] ? hypercall_page+0x3a7/0x1000
Dec 23 10:13:53 mars kernel: [<c010627f>] ? xen_safe_halt+0xf/0x20
Dec 23 10:13:53 mars kernel: [<c01102ec>] ? default_idle+0x1c/0x40
Dec 23 10:13:53 mars kernel: [<c011050a>] ? cpu_idle+0x4a/0x80
Dec 23 10:13:53 mars kernel: [<c0932a9c>] ? start_kernel+0x2e5/0x2ea
Dec 23 10:13:53 mars kernel: [<c0932632>] ? kernel_init+0x127/0x127
Dec 23 10:13:53 mars kernel: [<c0935a71>] ? xen_start_kernel+0x550/0x558
Dec 23 10:13:53 mars kernel: ---[ end trace 9b4cca322e7633d9 ]---</c0935a71></c0932632></c0932a9c></c011050a></c01102ec></c010627f></c01013a7></c076d887></c04e8a1d></c01384e6></irq></c0138690></c0138720></c05caa0a></c0190000></c0561454></c0561149></c05ca0bf></c05c86fa></c0659500></c06595eb></c0659b40></c0659bd8></c0659b40></c06790d5></c06788e1></c0659b40></c06716f2></c066df0c></c05c0faf></c013102b></c05c0faf></c05c0faf></c0130fd8>
