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Message-ID: <1321992902.8072.7.camel@wwguy-ubuntu>
Date: Tue, 22 Nov 2011 12:15:02 -0800
From: wwguy <wey-yi.w.guy@...el.com>
To: Dave Jones <davej@...hat.com>
Cc: Linux Kernel <linux-kernel@...r.kernel.org>,
"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: 3.1+ iwlwifi lockup
Hi Dave,
Sorry for taking so long.
it is a bogus command from the firmware which driver try to process it
and cause problem. I am not sure how it happen. But could you please try
the patch I attach here.
For now I am just ignore the command, but not sure it is good enough,
might has to reload the firmware, but not sure.
Thanks
Wey
On Mon, 2011-10-31 at 07:34 -0700, Dave Jones wrote:
> I just got this trace, and a driver lockup that caused me to have to
> unload & reload the iwlwifi module to get networking back.
> hardware is..
> 04:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300
>
> This is new as of 3.1+ (This kernel was Linus' tree as of last night)
>
> Dave
>
> [ 2669.712377] WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:927 iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]()
> [ 2669.712381] Hardware name: Adamo 13
> [ 2669.712384] wrong command queue 0 (should be 4), sequence 0x0 readp=54 writep=54
> [ 2669.712386] Modules linked in: nfs fscache auth_rpcgss nfs_acl ppdev parport_pc lp parport fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc lockd bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables arc4 dell_wmi sparse_keymap uvcvideo videodev snd_usb_audio v4l2_compat_ioctl32 snd_usbmidi_lib cdc_ether snd_rawmidi cdc_wdm usbnet cdc_acm mii snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device dell_laptop iwlwifi dcdbas microcode snd_pcm mac80211 joydev i2c_i801 pcspkr snd_timer iTCO_wdt iTCO_vendor_support snd soundcore cfg80211 snd_page_alloc tg3 rfkill wmi virtio_net kvm_intel kvm uinput sunrpc ipv6 xts gf128mul dm_crypt i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
> [ 2669.712493] Pid: 2332, comm: firefox Not tainted 3.1.0+ #9
> [ 2669.712495] Call Trace:
> [ 2669.712497] <IRQ> [<ffffffff8107d16f>] warn_slowpath_common+0x7f/0xc0
> [ 2669.712509] [<ffffffff8107d266>] warn_slowpath_fmt+0x46/0x50
> [ 2669.712519] [<ffffffffa038090e>] iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]
> [ 2669.712529] [<ffffffffa037e280>] iwl_irq_tasklet+0x210/0x8e0 [iwlwifi]
> [ 2669.712535] [<ffffffff810851fd>] tasklet_action+0x9d/0x240
> [ 2669.712539] [<ffffffff81085e28>] __do_softirq+0xc8/0x3d0
> [ 2669.712544] [<ffffffff81657f3c>] call_softirq+0x1c/0x30
> [ 2669.712549] [<ffffffff8101c735>] do_softirq+0xa5/0xe0
> [ 2669.712553] [<ffffffff810864a6>] irq_exit+0xa6/0xf0
> [ 2669.712557] [<ffffffff81658813>] do_IRQ+0x63/0xd0
> [ 2669.712561] [<ffffffff8164e5f3>] common_interrupt+0x73/0x73
> [ 2669.712563] <EOI> [<ffffffff81655c7a>] ? sysret_check+0x2e/0x69
> [ 2669.712570] ---[ end trace e86fa0935f9dc7a5 ]---
> [ 2669.712573] iwl data: 00000000: 00 00 55 55 00 00 00 00 08 53 e0 00 00 00 00 00 ..UU.....S......
> [ 2669.712577] iwl data: 00000010: 00 00 00 00 7e 04 19 00 05 00 04 00 94 07 02 00 ....~...........
> [ 2669.712619] ------------[ cut here ]------------
> [ 2669.712628] WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:927 iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]()
> [ 2669.712631] Hardware name: Adamo 13
> [ 2669.712634] wrong command queue 11 (should be 4), sequence 0x6B6B readp=54 writep=54
> [ 2669.712636] Modules linked in: nfs fscache auth_rpcgss nfs_acl ppdev parport_pc lp parport fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc lockd bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables arc4 dell_wmi sparse_keymap uvcvideo videodev snd_usb_audio v4l2_compat_ioctl32 snd_usbmidi_lib cdc_ether snd_rawmidi cdc_wdm usbnet cdc_acm mii snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device dell_laptop iwlwifi dcdbas microcode snd_pcm mac80211 joydev i2c_i801 pcspkr snd_timer iTCO_wdt iTCO_vendor_support snd soundcore cfg80211 snd_page_alloc tg3 rfkill wmi virtio_net kvm_intel kvm uinput sunrpc ipv6 xts gf128mul dm_crypt i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
> [ 2669.712729] Pid: 2332, comm: firefox Tainted: G W 3.1.0+ #9
> [ 2669.712731] Call Trace:
> [ 2669.712733] <IRQ> [<ffffffff8107d16f>] warn_slowpath_common+0x7f/0xc0
> [ 2669.712743] [<ffffffff8164de90>] ? _raw_spin_unlock_irqrestore+0x40/0x90
> [ 2669.712747] [<ffffffff8107d266>] warn_slowpath_fmt+0x46/0x50
> [ 2669.712753] [<ffffffff810c189f>] ? trace_hardirqs_on_caller+0x1f/0x1b0
> [ 2669.712762] [<ffffffffa038090e>] iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]
> [ 2669.712772] [<ffffffffa037e280>] iwl_irq_tasklet+0x210/0x8e0 [iwlwifi]
> [ 2669.712777] [<ffffffff810851fd>] tasklet_action+0x9d/0x240
> [ 2669.712781] [<ffffffff81085e28>] __do_softirq+0xc8/0x3d0
> [ 2669.712785] [<ffffffff81657f3c>] call_softirq+0x1c/0x30
> [ 2669.712789] [<ffffffff8101c735>] do_softirq+0xa5/0xe0
> [ 2669.712792] [<ffffffff810864a6>] irq_exit+0xa6/0xf0
> [ 2669.712796] [<ffffffff81658813>] do_IRQ+0x63/0xd0
> [ 2669.712800] [<ffffffff8164e5f3>] common_interrupt+0x73/0x73
> [ 2669.712802] <EOI> [<ffffffff81655c7a>] ? sysret_check+0x2e/0x69
> [ 2669.712808] ---[ end trace e86fa0935f9dc7a6 ]---
> [ 2669.712811] iwl data: 00000000: 00 00 55 55 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b ..UUkkkkkkkkkkkk
> [ 2669.712815] iwl data: 00000010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> [ 2669.712818] ------------[ cut here ]------------
> [ 2669.712826] WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:927 iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]()
> [ 2669.712829] Hardware name: Adamo 13
> [ 2669.712832] wrong command queue 11 (should be 4), sequence 0x6B6B readp=54 writep=54
> [ 2669.712834] Modules linked in: nfs fscache auth_rpcgss nfs_acl ppdev parport_pc lp parport fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc lockd bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables arc4 dell_wmi sparse_keymap uvcvideo videodev snd_usb_audio v4l2_compat_ioctl32 snd_usbmidi_lib cdc_ether snd_rawmidi cdc_wdm usbnet cdc_acm mii snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device dell_laptop iwlwifi dcdbas microcode snd_pcm mac80211 joydev i2c_i801 pcspkr snd_timer iTCO_wdt iTCO_vendor_support snd soundcore cfg80211 snd_page_alloc tg3 rfkill wmi virtio_net kvm_intel kvm uinput sunrpc ipv6 xts gf128mul dm_crypt i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
> [ 2669.712925] Pid: 2332, comm: firefox Tainted: G W 3.1.0+ #9
> [ 2669.712928] Call Trace:
> [ 2669.712930] <IRQ> [<ffffffff8107d16f>] warn_slowpath_common+0x7f/0xc0
> [ 2669.712938] [<ffffffff8107d266>] warn_slowpath_fmt+0x46/0x50
> [ 2669.712948] [<ffffffffa038090e>] iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]
> [ 2669.712958] [<ffffffffa037e280>] iwl_irq_tasklet+0x210/0x8e0 [iwlwifi]
> [ 2669.712963] [<ffffffff810851fd>] tasklet_action+0x9d/0x240
> [ 2669.712967] [<ffffffff81085e28>] __do_softirq+0xc8/0x3d0
> [ 2669.712971] [<ffffffff81657f3c>] call_softirq+0x1c/0x30
> [ 2669.712975] [<ffffffff8101c735>] do_softirq+0xa5/0xe0
> [ 2669.712979] [<ffffffff810864a6>] irq_exit+0xa6/0xf0
> [ 2669.712982] [<ffffffff81658813>] do_IRQ+0x63/0xd0
> [ 2669.712986] [<ffffffff8164e5f3>] common_interrupt+0x73/0x73
> [ 2669.712988] <EOI> [<ffffffff81655c7a>] ? sysret_check+0x2e/0x69
> [ 2669.712994] ---[ end trace e86fa0935f9dc7a7 ]---
> [ 2669.712997] iwl data: 00000000: 00 00 55 55 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b ..UUkkkkkkkkkkkk
> [ 2669.713018] iwl data: 00000010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> [ 2669.713136] ------------[ cut here ]------------
> [ 2669.713146] WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:927 iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]()
> [ 2669.713150] Hardware name: Adamo 13
> [ 2669.713153] wrong command queue 11 (should be 4), sequence 0x6B6B readp=54 writep=54
> [ 2669.713157] Modules linked in: nfs fscache auth_rpcgss nfs_acl ppdev parport_pc lp parport fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc lockd bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables arc4 dell_wmi sparse_keymap uvcvideo videodev snd_usb_audio v4l2_compat_ioctl32 snd_usbmidi_lib cdc_ether snd_rawmidi cdc_wdm usbnet cdc_acm mii snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device dell_laptop iwlwifi dcdbas microcode snd_pcm mac80211 joydev i2c_i801 pcspkr snd_timer iTCO_wdt iTCO_vendor_support snd soundcore cfg80211 snd_page_alloc tg3 rfkill wmi virtio_net kvm_intel kvm uinput sunrpc ipv6 xts gf128mul dm_crypt i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
> [ 2669.713292] Pid: 2332, comm: firefox Tainted: G W 3.1.0+ #9
> [ 2669.713295] Call Trace:
> [ 2669.713297] <IRQ> [<ffffffff8107d16f>] warn_slowpath_common+0x7f/0xc0
> [ 2669.713308] [<ffffffff8107d266>] warn_slowpath_fmt+0x46/0x50
> [ 2669.713319] [<ffffffffa038090e>] iwl_tx_cmd_complete+0x2ee/0x330 [iwlwifi]
> [ 2669.713331] [<ffffffffa037e280>] iwl_irq_tasklet+0x210/0x8e0 [iwlwifi]
> [ 2669.713337] [<ffffffff810851fd>] tasklet_action+0x9d/0x240
> [ 2669.713342] [<ffffffff81085e28>] __do_softirq+0xc8/0x3d0
> [ 2669.713347] [<ffffffff81657f3c>] call_softirq+0x1c/0x30
> [ 2669.713353] [<ffffffff8101c735>] do_softirq+0xa5/0xe0
> [ 2669.713357] [<ffffffff810864a6>] irq_exit+0xa6/0xf0
> [ 2669.713362] [<ffffffff81658813>] do_IRQ+0x63/0xd0
> [ 2669.713367] [<ffffffff8164e5f3>] common_interrupt+0x73/0x73
> [ 2669.713369] <EOI> [<ffffffff81655c7a>] ? sysret_check+0x2e/0x69
> [ 2669.713377] ---[ end trace e86fa0935f9dc7a8 ]---
> [ 2669.713380] iwl data: 00000000: 00 00 55 55 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b ..UUkkkkkkkkkkkk
> [ 2669.713385] iwl data: 00000010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> [ 2670.784424] iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting 0x2000000.
> [ 2670.784431] iwlwifi 0000:04:00.0: Loaded firmware version: 8.83.5.1 build 33692
> [ 2670.784556] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
> [ 2670.784559] iwlwifi 0000:04:00.0: Status: 0x000412E4, count: 5
> [ 2670.784562] iwlwifi 0000:04:00.0: 0x00000005 | SYSASSERT
> [ 2670.784565] iwlwifi 0000:04:00.0: 0x000024EC | uPc
> [ 2670.784568] iwlwifi 0000:04:00.0: 0x000024C8 | branchlink1
> [ 2670.784570] iwlwifi 0000:04:00.0: 0x000024C8 | branchlink2
> [ 2670.784573] iwlwifi 0000:04:00.0: 0x00000916 | interruptlink1
> [ 2670.784576] iwlwifi 0000:04:00.0: 0x00000000 | interruptlink2
> [ 2670.784578] iwlwifi 0000:04:00.0: 0x000000FF | data1
> [ 2670.784580] iwlwifi 0000:04:00.0: 0x00000489 | data2
> [ 2670.784583] iwlwifi 0000:04:00.0: 0x00000489 | line
> [ 2670.784585] iwlwifi 0000:04:00.0: 0x1A41414C | beacon time
> [ 2670.784588] iwlwifi 0000:04:00.0: 0x54956EB4 | tsf low
> [ 2670.784591] iwlwifi 0000:04:00.0: 0x000004FB | tsf hi
> [ 2670.784593] iwlwifi 0000:04:00.0: 0x00000000 | time gp1
> [ 2670.784596] iwlwifi 0000:04:00.0: 0x9D4D53F1 | time gp2
> [ 2670.784598] iwlwifi 0000:04:00.0: 0x00000000 | time gp3
> [ 2670.784601] iwlwifi 0000:04:00.0: 0x00010853 | uCode version
> [ 2670.784603] iwlwifi 0000:04:00.0: 0x00000024 | hw version
> [ 2670.784606] iwlwifi 0000:04:00.0: 0x00480302 | board version
> [ 2670.784609] iwlwifi 0000:04:00.0: 0x0B15001C | hcmd
> [ 2670.784611] iwlwifi 0000:04:00.0: CSR values:
> [ 2670.784614] iwlwifi 0000:04:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
> [ 2670.784641] iwlwifi 0000:04:00.0: CSR_HW_IF_CONFIG_REG: 0X00480302
> [ 2670.784666] iwlwifi 0000:04:00.0: CSR_INT_COALESCING: 0X00000040
> [ 2670.784691] iwlwifi 0000:04:00.0: CSR_INT: 0X00000000
> [ 2670.784715] iwlwifi 0000:04:00.0: CSR_INT_MASK: 0X00000000
> [ 2670.784740] iwlwifi 0000:04:00.0: CSR_FH_INT_STATUS: 0X00000000
> [ 2670.784765] iwlwifi 0000:04:00.0: CSR_GPIO_IN: 0X00000000
> [ 2670.784790] iwlwifi 0000:04:00.0: CSR_RESET: 0X00000000
> [ 2670.784814] iwlwifi 0000:04:00.0: CSR_GP_CNTRL: 0X080403c5
> [ 2670.784839] iwlwifi 0000:04:00.0: CSR_HW_REV: 0X00000024
> [ 2670.784864] iwlwifi 0000:04:00.0: CSR_EEPROM_REG: 0X00000000
> [ 2670.784889] iwlwifi 0000:04:00.0: CSR_EEPROM_GP: 0X90000004
> [ 2670.784914] iwlwifi 0000:04:00.0: CSR_OTP_GP_REG: 0X00060000
> [ 2670.784938] iwlwifi 0000:04:00.0: CSR_GIO_REG: 0X00080042
> [ 2670.784963] iwlwifi 0000:04:00.0: CSR_GP_UCODE_REG: 0X00007c71
> [ 2670.784988] iwlwifi 0000:04:00.0: CSR_GP_DRIVER_REG: 0X00000000
> [ 2670.785012] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP1: 0X00000000
> [ 2670.785037] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP2: 0X00000000
> [ 2670.785062] iwlwifi 0000:04:00.0: CSR_LED_REG: 0X00000058
> [ 2670.785086] iwlwifi 0000:04:00.0: CSR_DRAM_INT_TBL_REG: 0X8811a5a0
> [ 2670.785111] iwlwifi 0000:04:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
> [ 2670.785136] iwlwifi 0000:04:00.0: CSR_ANA_PLL_CFG: 0X00880300
> [ 2670.785161] iwlwifi 0000:04:00.0: CSR_HW_REV_WA_REG: 0X0001001a
> [ 2670.785186] iwlwifi 0000:04:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0000
> [ 2670.785188] iwlwifi 0000:04:00.0: FH register values:
> [ 2670.785224] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X1174de00
> [ 2670.785243] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X012abbb0
> [ 2670.785261] iwlwifi 0000:04:00.0: FH_RSCSR_CHNL0_WPTR: 0X00000048
> [ 2670.785280] iwlwifi 0000:04:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80819104
> [ 2670.785300] iwlwifi 0000:04:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> [ 2670.785343] iwlwifi 0000:04:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X02630000
> [ 2670.785362] iwlwifi 0000:04:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
> [ 2670.785380] iwlwifi 0000:04:00.0: FH_TSSR_TX_STATUS_REG: 0X07ff0001
> [ 2670.785389] iwlwifi 0000:04:00.0: FH_TSSR_TX_ERROR_REG: 0X00000000
> [ 2670.785389] iwlwifi 0000:04:00.0: Start IWL Event Log Dump: display last 20 entries
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638087993:0x00000000:0355
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088265:0x00000113:0106
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088266:0x00000000:0302
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088289:0x00000000:0355
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088453:0x00000113:0106
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088455:0x00000000:0302
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088478:0x00000000:0355
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088750:0x0b15001c:0206
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088752:0x00000001:0204
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088755:0x00000001:0214
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638088756:0x01002111:0209
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638089055:0x00000000:0210
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638089065:0x00000000:0207
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638089067:0x01002111:0211
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638089072:0x00000000:0212
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638090106:0x00000000:0215
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638090108:0x00000008:0220
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638090127:0x00000000:0301
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2638090315:0x00000000:0355
> [ 2670.785389] iwlwifi 0000:04:00.0: EVT_LOGT:2639090696:0x00000000:0125
> [ 2670.795643] ieee80211 phy0: Hardware restart was requested
> [ 2670.795729] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S
> [ 2670.798779] iwlwifi 0000:04:00.0: Radio type=0x0-0x2-0x0
>
View attachment "0001-iwlwifi-Detect-bogus-command-and-return.patch" of type "text/x-patch" (1385 bytes)
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