Additional info:
WARNING: at drivers/net/wireless/iwlegacy/common.c:117 _il_grab_nic_access+0x96/0xa0 [iwlegacy]()
Hardware name: 2008VDQ
Timeout waiting for ucode processor access (CSR_GP_CNTRL 0x080033d8)
Modules linked in: nfsv4 auth_rpcgss nfs lockd sunrpc dns_resolver fscache fuse cpufreq_stats ipt_MASQUERADE nf_conntrack_netbios_ns nf_conntrack_broadcast 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 nf_conntrack ebtable_filter ebtables ip6table_filter ip6_tables bnep bluetooth iTCO_wdt iTCO_vendor_support coretemp arc4 iwl4965 microcode iwlegacy snd_hda_codec_analog i2c_i801 mac80211 lpc_ich mfd_core snd_hda_intel snd_hda_codec snd_hwdep snd_seq cfg80211 snd_seq_device snd_pcm e1000e snd_page_alloc snd_timer thinkpad_acpi snd soundcore rfkill binfmt_misc uinput radeon i2c_algo_bit drm_kms_helper ttm drm yenta_socket i2c_core video [last unloaded: iptable_mangle]
Pid: 43, comm: kworker/u:1 Not tainted 3.7.2-201.fc18.i686.PAE #1
Call Trace:
 [<c044d6a2>] warn_slowpath_common+0x72/0xa0
 [<f88197e6>] ? _il_grab_nic_access+0x96/0xa0 [iwlegacy]
 [<f88197e6>] ? _il_grab_nic_access+0x96/0xa0 [iwlegacy]
 [<c044d773>] warn_slowpath_fmt+0x33/0x40
 [<f88197e6>] _il_grab_nic_access+0x96/0xa0 [iwlegacy]
 [<f881c6bc>] il_rx_queue_update_write_ptr+0x11c/0x160 [iwlegacy]
 [<f8858a54>] ? il4965_rx_allocate+0x174/0x270 [iwl4965]
 [<f885b9d1>] il4965_rx_queue_restock+0xf1/0x120 [iwl4965]
 [<f885ba36>] il4965_rx_replenish+0x36/0x50 [iwl4965]
 [<f885ba88>] il4965_bg_rx_replenish+0x38/0x50 [iwl4965]
 [<c0466c99>] process_one_work+0x119/0x3c0
 [<c0988be0>] ? apic_timer_interrupt+0x34/0x3c
 [<f885ba50>] ? il4965_rx_replenish+0x50/0x50 [iwl4965]
 [<c0468e29>] worker_thread+0x119/0x3b0
 [<c0468d10>] ? busy_worker_rebind_fn+0xd0/0xd0
 [<c046d534>] kthread+0x94/0xa0
 [<c098f737>] ret_from_kernel_thread+0x1b/0x28
 [<c046d4a0>] ? kthread_create_on_node+0xc0/0xc0

Potential duplicate: bug 863386