Additional info:
reporter:       libreport-2.6.3
WARNING: CPU: 0 PID: 0 at drivers/net/wireless/rt2x00/rt2800lib.c:970 rt2800_update_beacons_setup+0x153/0x180 [rt2800lib]()
Modules linked in: nf_nat_h323 nf_conntrack_h323 nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_sip nf_conntrack_sip nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp nls_utf8 isofs cdc_acm rndis_host cdc_ether usbnet fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_security arc4 rt2800pci gpio_ich rt2800mmio ppdev
 iTCO_wdt rt2800lib iTCO_vendor_support rt2x00pci rt2x00mmio snd_hda_codec_realtek snd_hda_codec_generic rt2x00lib mac80211 coretemp kvm_intel snd_hda_intel snd_hda_controller kvm snd_hda_codec snd_hda_core cfg80211 snd_hwdep lpc_ich eeprom_93cx6 snd_seq snd_seq_device crc_ccitt snd_pcm rfkill i2c_i801 parport_pc snd_timer snd soundcore tpm_tis tpm parport acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc i915 i2c_algo_bit video drm_kms_helper 8021q garp drm stp llc mrp r8169 serio_raw ata_generic pata_acpi mii uas usb_storage
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.6-201.fc22.i686 #1
Hardware name: langchao 12345/IPM41-D3, BIOS 080015  04/30/2010
 c0d1f947 6da6a759 00000000 f4439e4c c0a86204 00000000 f4439e7c c045bb57
 c0c373d8 00000000 00000000 f89281ac 000003ca f891afb3 f891afb3 ee05f2e0
 00000001 f3c14d40 f4439e8c c045bc62 00000009 00000000 f4439eb4 f891afb3
Call Trace:
 [<c0a86204>] dump_stack+0x41/0x52
 [<c045bb57>] warn_slowpath_common+0x87/0xc0
 [<f891afb3>] ? rt2800_update_beacons_setup+0x153/0x180 [rt2800lib]
 [<f891afb3>] ? rt2800_update_beacons_setup+0x153/0x180 [rt2800lib]
 [<c045bc62>] warn_slowpath_null+0x22/0x30
 [<f891afb3>] rt2800_update_beacons_setup+0x153/0x180 [rt2800lib]
 [<f891b0ed>] rt2800_write_beacon+0x10d/0x220 [rt2800lib]
 [<f7fdc1b1>] rt2x00queue_update_beacon+0xc1/0x100 [rt2x00lib]
 [<f7fd8000>] ? 0xf7fd8000
 [<f7fd8036>] rt2x00lib_beaconupdate_iter+0x36/0x60 [rt2x00lib]
 [<f8a88dd1>] __iterate_interfaces+0xc1/0x120 [mac80211]
 [<f7fd8000>] ? 0xf7fd8000
 [<f8a88e4a>] ieee80211_iterate_active_interfaces_atomic+0x1a/0x20 [mac80211]
 [<f7fd9017>] rt2x00lib_pretbtt+0x37/0x40 [rt2x00lib]
 [<f7fa7b60>] rt2800mmio_pretbtt_tasklet+0x10/0x60 [rt2800mmio]
 [<c045f5e8>] tasklet_hi_action+0xc8/0xe0
 [<c045fbf7>] __do_softirq+0xe7/0x240
 [<c045fb10>] ? cpu_callback+0x190/0x190
 [<c04056d8>] do_softirq_own_stack+0x28/0x30
 <IRQ>  [<c045fec5>] irq_exit+0xa5/0xb0
 [<c0404fa5>] do_IRQ+0x45/0xd0
 [<c04cb8f9>] ? tick_program_event+0x29/0x30
 [<c0a8c3b3>] common_interrupt+0x33/0x38
 [<c093f813>] ? cpuidle_enter_state+0x93/0x240
 [<c093f9f4>] cpuidle_enter+0x14/0x20
 [<c049686c>] cpu_startup_entry+0x29c/0x3b0
 [<c0a831c7>] rest_init+0x67/0x70
 [<c0dc6b6f>] start_kernel+0x3ec/0x405
 [<c0dc62e3>] i386_start_kernel+0x91/0x95

Potential duplicate: bug 1192392