Additional info:
WARNING: at drivers/net/wireless/iwlegacy/4965-mac.c:2695 il4965_hdl_tx+0xd3f/0xd80 [iwl4965]()
Hardware name: HP Compaq 6910p
Modules linked in: ipt_MASQUERADE nf_conntrack_netbios_ns nf_conntrack_broadcast ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 iptable_nat be2iscsi nf_nat_ipv4 iscsi_boot_sysfs nf_nat bnx2i cnic uio cxgb4i cxgb4 iptable_mangle cxgb3i cxgb3 mdio libcxgbi ib_iser nf_conntrack_ipv4 nf_defrag_ipv4 rdma_cm xt_conntrack ib_addr nf_conntrack iw_cm ib_cm ib_sa ib_mad ebtable_filter ib_core ebtables rfcomm ip6table_filter bnep iscsi_tcp ip6_tables libiscsi_tcp libiscsi scsi_transport_iscsi binfmt_misc snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_seq iwl4965 iwlegacy mac80211 coretemp kvm btusb bluetooth snd_seq_device cfg80211 snd_pcm snd_page_alloc snd_timer snd hp_wmi sparse_keymap rfkill soundcore microcode ppdev parport_pc parport hp_accel irda iTCO_wdt iTCO_vendor_support crc_ccitt joydev tpm_tis mei tpm_infineon lpc_ich serio_raw lis3lv02d input_polldev tpm tpm_bios uinput pata_pcmcia ata_generic sdhci_pci firewire_ohci sdhci firewire_core mmc_core crc_itu_t yenta_socket i915 pata_acpi i2c_algo_bit e1000e drm_kms_helper drm i2c_core wmi video sunrpc
Pid: 0, comm: swapper/0 Not tainted 3.7.2-204.fc18.i686 #1
Call Trace:
 [<c043dfe2>] warn_slowpath_common+0x72/0xa0
 [<f7f2ee7f>] ? il4965_hdl_tx+0xd3f/0xd80 [iwl4965]
 [<f7f2ee7f>] ? il4965_hdl_tx+0xd3f/0xd80 [iwl4965]
 [<c043e032>] warn_slowpath_null+0x22/0x30
 [<f7f2ee7f>] il4965_hdl_tx+0xd3f/0xd80 [iwl4965]
 [<f7e867a3>] ? _il_grab_nic_access+0x43/0xa0 [iwlegacy]
 [<f7f2cea1>] il4965_rx_handle+0x121/0x4a0 [iwl4965]
 [<f7f2d6db>] il4965_irq_tasklet+0x4bb/0x710 [iwl4965]
 [<c0476699>] ? rebalance_domains+0x89/0x150
 [<c0446693>] tasklet_action+0x53/0xb0
 [<c04462af>] __do_softirq+0x9f/0x1b0
 [<c0446210>] ? local_bh_enable_ip+0x90/0x90
 <IRQ>  [<c044652d>] ? irq_exit+0x9d/0xb0
 [<c0404e3b>] ? do_IRQ+0x4b/0xc0
 [<c0409418>] ? sched_clock+0x8/0x10
 [<c0970d73>] ? common_interrupt+0x33/0x38
 [<c04700d8>] ? sched_group_set_rt_runtime+0x8/0x60
 [<c06f494c>] ? arch_local_irq_enable+0x7/0xb
 [<c06f5157>] ? acpi_idle_enter_simple+0xed/0x11e
 [<c08392e5>] ? cpuidle_enter+0x15/0x20
 [<c08397f1>] ? cpuidle_enter_state+0x11/0x50
 [<c08398c2>] ? cpuidle_idle_call+0x92/0x1e0
 [<c040ae7a>] ? cpu_idle+0xaa/0xe0
 [<c09494ed>] ? rest_init+0x5d/0x60
 [<c0c169cc>] ? start_kernel+0x36d/0x373
 [<c0c16494>] ? repair_env_string+0x51/0x51
 [<c0c162c2>] ? i386_start_kernel+0x78/0x7d

Potential duplicate: bug 885294