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[Bug 1270808] Re: iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2

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FWIW - Seth seems to have picked up the patch already:

https://patchwork.kernel.org/patch/5033871/

users on bugzilla gave good feedback on this patch already, but I'd be
glad to get more testing.

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https://bugs.launchpad.net/bugs/1270808

Title:
  iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2

Status in The Linux Kernel:
  Unknown
Status in “linux-firmware” package in Ubuntu:
  Triaged

Bug description:
  profile/gdm" pid=7426 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=115 ouid=0
  [ 2390.836955] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 2390.836969] iwlwifi 0000:01:00.0: Current SW read_ptr 210 write_ptr 99
  [ 2390.837000] iwl data: 00000000: 00 00 fc ff 00 00 00 00 03 00 00 00 00 00 00 00  ................
  [ 2390.837019] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 2390.837036] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020e1
  [ 2390.837053] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 2390.837071] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300018
  [ 2390.837088] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 2390.837105] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 2390.837123] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 2390.837140] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x00709050
  [ 2390.837203] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [25,25]
  [ 2390.837264] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2390.837324] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [210,99]
  [ 2390.837385] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837446] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837507] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2390.837567] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2390.837627] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2390.837688] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2390.837751] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [81,81]
  [ 2390.837814] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2390.837879] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837943] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838005] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838065] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838126] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838187] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838248] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838308] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838370] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173273] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 2981.173287] iwlwifi 0000:01:00.0: Current SW read_ptr 103 write_ptr 214
  [ 2981.173321] iwl data: 00000000: 00 00 00 00 00 00 00 00 80 ff 3f 00 00 00 00 00  ..........?.....
  [ 2981.173342] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 2981.173363] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102075
  [ 2981.173380] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 2981.173397] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030001d
  [ 2981.173415] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 2981.173433] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 2981.173450] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 2981.173467] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090ba
  [ 2981.173529] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [30,30]
  [ 2981.173590] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2981.173650] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [103,214]
  [ 2981.173712] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173772] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173832] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2981.173920] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2981.173981] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2981.174041] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2981.174102] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [187,187]
  [ 2981.174162] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2981.174223] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174284] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174344] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174404] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174465] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174525] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174586] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174647] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174707] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769330] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 3106.769344] iwlwifi 0000:01:00.0: Current SW read_ptr 86 write_ptr 107
  [ 3106.769376] iwl data: 00000000: 00 00 c0 ff 00 00 00 00 3f 00 00 00 00 00 00 00  ........?.......
  [ 3106.769395] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 3106.769412] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102065
  [ 3106.769430] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 3106.769447] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030001e
  [ 3106.769465] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 3106.769482] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 3106.769499] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 3106.769517] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090f5
  [ 3106.769579] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [31,31]
  [ 3106.769640] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 3106.769700] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [86,107]
  [ 3106.769761] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769822] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769882] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 3106.769942] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 3106.770002] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 3106.770063] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 3106.770124] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [246,246]
  [ 3106.770184] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 3106.770246] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770306] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770366] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770426] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770486] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770547] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770607] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770669] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770729] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.094473] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 7065.094487] iwlwifi 0000:01:00.0: Current SW read_ptr 224 write_ptr 45
  [ 7065.094519] iwl data: 00000000: 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00  ................
  [ 7065.094537] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 7065.094555] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020ef
  [ 7065.094572] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 7065.094589] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030003f
  [ 7065.094607] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 7065.094624] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 7065.094641] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 7065.094658] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090a2
  [ 7065.094720] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [64,64]
  [ 7065.094781] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 7065.094841] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [224,45]
  [ 7065.094901] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.094961] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095021] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 7065.095081] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 7065.095142] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 7065.095203] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 7065.095265] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [163,163]
  [ 7065.095324] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 7065.095386] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095446] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095507] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095567] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095628] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095688] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095749] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095809] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095869] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-4-generic 3.13.0-4.19
  ProcVersionSignature: Ubuntu 3.13.0-4.19-generic 3.13.0-rc8
  Uname: Linux 3.13.0-4-generic x86_64
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  caravena   2037 F.... pulseaudio
   /dev/snd/pcmC0D0p:   caravena   2037 F...m pulseaudio
  CRDA:
   country CL:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5735 - 5835 @ 40), (N/A, 20)
  CurrentDesktop: GNOME
  Date: Mon Jan 20 09:19:41 2014
  HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87
  InstallationDate: Installed on 2013-12-13 (37 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20131213)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-4-generic root=UUID=0c67119c-ddae-476a-b510-142ec598f691 ro rootflags=subvol=@ quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-4-generic N/A
   linux-backports-modules-3.13.0-4-generic  N/A
   linux-firmware                            1.121
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/15/2013
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: P14AAJ
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: SAMSUNG_NP1234567890
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 530U3C/530U4C
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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