One of these appear every time I resume from suspend. [ 9387.911475] ------------[ cut here ]------------ [ 9387.911519] WARNING: CPU: 2 PID: 0 at /home/kernel/COD/linux/net/mac80211/rx.c:630 ieee80211_rx_napi+0x905/0xa20 [mac80211] [ 9387.911520] Modules linked in: rtsx_usb_ms memstick rtsx_usb_sdmmc rtsx_usb ccm rfcomm bnep nls_iso8859_1 hid_rmi cmdlinepart rmi_core joydev intel_spi_platform intel_spi spi_nor intel_rapl mtd x86_pkg_temp_thermal intel_powerclamp kvm_intel dell_wmi sparse_keymap kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 pcbc dell_laptop dell_smbios ath9k dcdbas ath9k_common dell_smm_hwmon snd_hda_codec_hdmi snd_hda_codec_realtek aesni_intel snd_soc_rt5640 snd_hda_codec_generic aes_x86_64 snd_soc_rl6231 crypto_simd glue_helper ath9k_hw snd_hda_intel snd_soc_core uvcvideo snd_hda_codec cryptd ath snd_hda_core intel_cstate videobuf2_vmalloc snd_hwdep videobuf2_memops videobuf2_v4l2 snd_compress intel_rapl_perf ac97_bus snd_seq_midi mac80211 videobuf2_core snd_pcm_dmaengine snd_seq_midi_event [ 9387.911566] snd_rawmidi input_leds videodev ath3k hid_multitouch serio_raw cfg80211 btusb snd_pcm media snd_seq btrtl btbcm btintel snd_seq_device elan_i2c bluetooth snd_timer snd ecdh_generic soundcore mei_me shpchp lpc_ich mei snd_soc_sst_acpi i2c_designware_platform dw_dmac snd_soc_sst_match i2c_designware_core dw_dmac_core spi_pxa2xx_platform 8250_dw dell_rbtn mac_hid ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp coretemp nf_conntrack parport_pc libcrc32c ppdev iptable_filter lp parport ip_tables x_tables autofs4 [ 9387.911617] usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops r8169 ahci drm libahci mii wmi video sdhci_acpi sdhci i2c_hid hid [ 9387.911634] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G W 4.12.0-041200rc2-generic #201705212331 [ 9387.911635] Hardware name: Dell Inc. Inspiron 3542/0KHNVP, BIOS A03 05/27/2014 [ 9387.911637] task: ffff97edd6294380 task.stack: ffffb2ba80cd0000 [ 9387.911662] RIP: 0010:ieee80211_rx_napi+0x905/0xa20 [mac80211] [ 9387.911664] RSP: 0018:ffff97eddfb03d18 EFLAGS: 00010246 [ 9387.911666] RAX: 0000000000010000 RBX: ffff97ed0209b200 RCX: ffff97edd03fc1a8 [ 9387.911667] RDX: 0000000000000004 RSI: ffffffffc09c8000 RDI: ffff97edcfac0780 [ 9387.911669] RBP: ffff97eddfb03de8 R08: 0000000000000000 R09: ffff97eddfda5000 [ 9387.911670] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 9387.911671] R13: 0000000000000000 R14: ffff97edd12c9ab8 R15: ffff97edcfac0780 [ 9387.911673] FS: 0000000000000000(0000) GS:ffff97eddfb00000(0000) knlGS:0000000000000000 [ 9387.911674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9387.911676] CR2: 00007f573ab25000 CR3: 00000001b6a09000 CR4: 00000000001406e0 [ 9387.911677] Call Trace: [ 9387.911679] [ 9387.911687] ? map_single+0x32/0x80 [ 9387.911691] ? __netdev_alloc_skb+0xc8/0x120 [ 9387.911695] ? ath9k_cmn_rx_skb_postprocess+0x4c/0x130 [ath9k_common] [ 9387.911698] ? swiotlb_tbl_unmap_single+0xf4/0x120 [ 9387.911707] ath_rx_tasklet+0xacc/0xff0 [ath9k] [ 9387.911714] ath9k_tasklet+0x1e4/0x250 [ath9k] [ 9387.911718] tasklet_action+0x5e/0x110 [ 9387.911723] __do_softirq+0x104/0x28f [ 9387.911726] irq_exit+0xb6/0xc0 [ 9387.911729] do_IRQ+0x4f/0xd0 [ 9387.911732] common_interrupt+0x89/0x89 [ 9387.911737] RIP: 0010:cpuidle_enter_state+0x121/0x2c0 [ 9387.911738] RSP: 0018:ffffb2ba80cd3e60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff5e [ 9387.911741] RAX: 0000000000000000 RBX: 0000000000000006 RCX: 000000000000001f [ 9387.911742] RDX: 00000889cb1fc036 RSI: ffff97eddfb19718 RDI: 0000000000000000 [ 9387.911743] RBP: ffffb2ba80cd3e98 R08: 00000000000002b2 R09: 0000000000000018 [ 9387.911744] R10: ffffb2ba80cd3e30 R11: 0000000000000139 R12: ffff97eddfb24900 [ 9387.911746] R13: ffffffff8c387b58 R14: 00000889cb1fc036 R15: ffffffff8c387b40 [ 9387.911747] [ 9387.911751] cpuidle_enter+0x17/0x20 [ 9387.911755] call_cpuidle+0x23/0x40 [ 9387.911758] do_idle+0x194/0x200 [ 9387.911761] cpu_startup_entry+0x71/0x80 [ 9387.911767] start_secondary+0x154/0x190 [ 9387.911770] secondary_startup_64+0x9f/0x9f [ 9387.911772] Code: ff 48 8b 95 70 ff ff ff 4c 8b ab d8 00 00 00 4c 8b b2 d8 00 00 00 e9 8c f9 ff ff 48 89 de 4c 89 ff e8 50 1d fe ff e9 d0 f9 ff ff <0f> ff 48 89 df e8 71 2f 45 cb e9 d5 f7 ff ff 0f ff e9 c6 f7 ff [ 9387.911814] ---[ end trace affb4b11847df9d2 ]---