Have pending ack frames!

[Manuel López-Ibáñez]

After:

[22835.254751] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22837.982488] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22838.146576] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22839.370379] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22860.985768] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22861.144922] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22862.372988] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22893.998523] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22894.158466] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22895.390429] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22937.003623] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22937.163382] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22938.387471] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22990.011540] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22990.171725] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[22991.399653] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23052.995066] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23053.159004] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23054.382952] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23115.994723] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23116.154513] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23117.382631] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23178.974150] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23179.133936] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23180.366099] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23225.371150] usb 6-1: USB disconnect, device number 2
[23225.830672] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
[23226.603018] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
[23226.715159] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
[23226.758700] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 0
               Please file bug report to http://rt2x00.serialmonkey.com

I tried to reload the driver:

$sudo rmmod rt2800pci rt2x00pci
$sudo modprobe rt2800pci

and I get:

[23468.853329] ------------[ cut here ]------------
[23468.853420] WARNING: CPU: 0 PID: 14707 at /build/linux-dcxD3m/linux-4.4.0/net/mac80211/main.c:1176 ieee80211_free_ack_frame+0x3b/0x50 [mac80211]()
[23468.853424] Have pending ack frames!
[23468.853427] Modules linked in: ctr ccm rfcomm bnep binfmt_misc drbg ansi_cprng xts gf128mul dm_crypt hp_wmi sparse_keymap kvm irqbypass uvcvideo serio_raw videobuf2_vmalloc videobuf2_memops btusb btrtl btbcm videobuf2_v4l2 btintel videobuf2_core bluetooth arc4 v4l2_common joydev rt2800pci(-) rt2800mmio rt2800lib k10temp input_leds videodev rt2x00pci rt2x00mmio media rt2x00lib mac80211 snd_hda_codec_idt snd_hda_codec_generic snd_hda_codec_hdmi cfg80211 snd_hda_intel i2c_piix4 snd_hda_codec snd_hda_core eeprom_93cx6 crc_ccitt snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd hp_accel lis3lv02d input_polldev soundcore shpchp mac_hid parport_pc ppdev lp parport autofs4 ums_realtek uas usb_storage hid_generic usbhid hid amdkfd psmouse amd_iommu_v2 radeon
[23468.853521] i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt ahci r8169 mii libahci fb_sys_fops drm wmi fjes video
[23468.853544] CPU: 0 PID: 14707 Comm: rmmod Not tainted 4.4.0-31-generic #50-Ubuntu
[23468.853548] Hardware name: Hewlett-Packard HP Pavilion dm1 Notebook PC /1611, BIOS F.03 12/20/2010
[23468.853552] 0000000000000286 000000007007433c ffff88002180bc98 ffffffff813f1143
[23468.853558] ffff88002180bce0 ffffffffc0574260 ffff88002180bcd0 ffffffff81081102
[23468.853563] ffff8800d81cea00 00000000000000ff 00000000ffffffff 0000000000000001
[23468.853569] Call Trace:
[23468.853583] [<ffffffff813f1143>] dump_stack+0x63/0x90
[23468.853591] [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0
[23468.853596] [<ffffffff8108119c>] warn_slowpath_fmt+0x5c/0x80
[23468.853604] [<ffffffff811ceccd>] ? vunmap_page_range+0x20d/0x330
[23468.853635] [<ffffffffc04fed4b>] ieee80211_free_ack_frame+0x3b/0x50 [mac80211]
[23468.853641] [<ffffffff813f19ee>] idr_for_each+0xae/0x110
[23468.853671] [<ffffffffc04fed10>] ? ieee80211_free_hw+0x70/0x70 [mac80211]
[23468.853677] [<ffffffff811ec60a>] ? kfree+0x13a/0x150
[23468.853707] [<ffffffffc04fecdd>] ieee80211_free_hw+0x3d/0x70 [mac80211]
[23468.853713] [<ffffffffc043a095>] rt2x00pci_remove+0x35/0x50 [rt2x00pci]
[23468.853720] [<ffffffff81442549>] pci_device_remove+0x39/0xc0
[23468.853727] [<ffffffff81553811>] __device_release_driver+0xa1/0x150
[23468.853732] [<ffffffff81554345>] driver_detach+0xb5/0xc0
[23468.853737] [<ffffffff81553275>] bus_remove_driver+0x55/0xd0
[23468.853741] [<ffffffff81554b4c>] driver_unregister+0x2c/0x50
[23468.853746] [<ffffffff81440be9>] pci_unregister_driver+0x29/0x90
[23468.853752] [<ffffffffc06214e4>] rt2800pci_driver_exit+0x10/0xb2c [rt2800pci]
[23468.853758] [<ffffffff81107e25>] SyS_delete_module+0x1b5/0x210
[23468.853764] [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71
[23468.853768] ---[ end trace ebfb951ebade55f2 ]---

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-generic 4.4.0.31.33
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: manu 3774 F.... pulseaudio
 /dev/snd/controlC0: manu 3774 F.... pulseaudio
CurrentDesktop: KDE
Date: Wed Aug 3 19:10:15 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=7e2d64a2-cede-4dfa-9852-3d98692b0a5f
InstallationDate: Installed on 2016-05-13 (81 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Hewlett-Packard HP Pavilion dm1 Notebook PC
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=fa882bf1-6d9f-4393-a73b-b8f6b01baaa1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-31-generic N/A
 linux-backports-modules-4.4.0-31-generic N/A
 linux-firmware 1.157.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/20/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.03
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1611
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 96.19
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.03:bd12/20/2010:svnHewlett-Packard:pnHPPaviliondm1NotebookPC:pvr0589100000252B00000320100:rvnHewlett-Packard:rn1611:rvr96.19:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion dm1 Notebook PC
dmi.product.version: 0589100000252B00000320100
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]