Additional info:
WARNING: at lib/dma-debug.c:937 check_unmap+0x47d/0x930()
Hardware name: A8NE-FM
forcedeth 0000:00:0a.0: DMA-API: device driver failed to check map error[device address=0x000000006b088000] [size=10 bytes] [mapped as page]
Modules linked in: fuse ebtable_nat ipt_MASQUERADE nf_conntrack_netbios_ns nf_conntrack_broadcast ip6table_nat nf_nat_ipv6 ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack bnep nf_conntrack bluetooth rfkill ebtable_filter ebtables ip6table_filter ip6_tables ppdev gspca_spca561 gspca_main videodev joydev media snd_intel8x0 snd_ac97_codec ac97_bus edac_core snd_seq edac_mce_amd snd_seq_device snd_pcm serio_raw k8temp snd_page_alloc snd_timer snd soundcore forcedeth parport_pc parport i2c_nforce2 uinput nouveau mxm_wmi wmi video i2c_algo_bit ata_generic drm_kms_helper ttm drm pata_acpi i2c_core firewire_ohci firewire_core crc_itu_t sata_nv pata_amd usb_storage
Pid: 1599, comm: gnome-shell Not tainted 3.9.0-0.rc4.git0.1.fc19.x86_64 #1
Call Trace:
 <IRQ>  [<ffffffff81068df0>] warn_slowpath_common+0x70/0xa0
 [<ffffffff81068e6c>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffff8137e8ed>] check_unmap+0x47d/0x930
 [<ffffffff8137edff>] debug_dma_unmap_page+0x5f/0x70
 [<ffffffffa0213992>] nv_unmap_txskb.isra.36+0x82/0x100 [forcedeth]
 [<ffffffffa0213c93>] nv_tx_done_optimized+0x103/0x2d0 [forcedeth]
 [<ffffffffa0216279>] nv_napi_poll+0x79/0x620 [forcedeth]
 [<ffffffff815d7692>] net_rx_action+0x172/0x380
 [<ffffffff8107343f>] __do_softirq+0xff/0x400
 [<ffffffff81073905>] irq_exit+0xb5/0xc0
 [<ffffffff817290ee>] smp_apic_timer_interrupt+0x6e/0x9c
 [<ffffffff81727fb2>] apic_timer_interrupt+0x72/0x80
 <EOI>  [<ffffffff81727345>] ? sysret_check+0x22/0x5d