Hi,
On my Lenovo X1 Carbon gen 5 system,after I upgraded to v4.17-rc1
iwlwifi started to fail with following splats on dmesg:
iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting 0x2000000.
iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
iwlwifi 0000:04:00.0: Status: 0x00000100, count: 6
iwlwifi 0000:04:00.0: Loaded firmware version: 31.560484.0
iwlwifi 0000:04:00.0: 0x00000038 | BAD_COMMAND
iwlwifi 0000:04:00.0: 0x00A002F1 | trm_hw_status0
iwlwifi 0000:04:00.0: 0x00000000 | trm_hw_status1
iwlwifi 0000:04:00.0: 0x0002495C | branchlink2
iwlwifi 0000:04:00.0: 0x0003962E | interruptlink1
iwlwifi 0000:04:00.0: 0x00000000 | interruptlink2
iwlwifi 0000:04:00.0: 0x00000000 | data1
iwlwifi 0000:04:00.0: 0x00000030 | data2
iwlwifi 0000:04:00.0: 0x00000030 | data3
iwlwifi 0000:04:00.0: 0x003B31AF | beacon time
iwlwifi 0000:04:00.0: 0x0004CE4F | tsf low
iwlwifi 0000:04:00.0: 0x00000000 | tsf hi
iwlwifi 0000:04:00.0: 0x00000000 | time gp1
iwlwifi 0000:04:00.0: 0x0004CE50 | time gp2
iwlwifi 0000:04:00.0: 0x00000001 | uCode revision type
iwlwifi 0000:04:00.0: 0x0000001F | uCode version major
iwlwifi 0000:04:00.0: 0x00088D64 | uCode version minor
iwlwifi 0000:04:00.0: 0x00000230 | hw version
iwlwifi 0000:04:00.0: 0x00489000 | board version
iwlwifi 0000:04:00.0: 0x00000000 | hcmd
iwlwifi 0000:04:00.0: 0x00122080 | isr0
iwlwifi 0000:04:00.0: 0x00000000 | isr1
iwlwifi 0000:04:00.0: 0x28201802 | isr2
iwlwifi 0000:04:00.0: 0x404001C0 | isr3
iwlwifi 0000:04:00.0: 0x00000000 | isr4
iwlwifi 0000:04:00.0: 0x802D0051 | last cmd Id
iwlwifi 0000:04:00.0: 0x00000000 | wait_event
iwlwifi 0000:04:00.0: 0x0000DF8E | l2p_control
iwlwifi 0000:04:00.0: 0x00000820 | l2p_duration
iwlwifi 0000:04:00.0: 0x00000000 | l2p_mhvalid
iwlwifi 0000:04:00.0: 0x00000000 | l2p_addr_match
iwlwifi 0000:04:00.0: 0x0000000D | lmpm_pmg_sel
iwlwifi 0000:04:00.0: 0x13091828 | timestamp
iwlwifi 0000:04:00.0: 0x00002838 | flow_handler
iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
iwlwifi 0000:04:00.0: Status: 0x00000100, count: 7
iwlwifi 0000:04:00.0: 0x00000034 | NMI_INTERRUPT_WDG
iwlwifi 0000:04:00.0: 0x00000000 | umac branchlink1
iwlwifi 0000:04:00.0: 0xC0086950 | umac branchlink2
iwlwifi 0000:04:00.0: 0xC00842BC | umac interruptlink1
iwlwifi 0000:04:00.0: 0xC00840CC | umac interruptlink2
iwlwifi 0000:04:00.0: 0x00000400 | umac data1
iwlwifi 0000:04:00.0: 0xC00840CC | umac data2
iwlwifi 0000:04:00.0: 0xDEADBEEF | umac data3
iwlwifi 0000:04:00.0: 0x0000001F | umac major
iwlwifi 0000:04:00.0: 0x00088D64 | umac minor
iwlwifi 0000:04:00.0: 0xC08861DC | frame pointer
iwlwifi 0000:04:00.0: 0xC08861DC | stack pointer
iwlwifi 0000:04:00.0: 0x00000000 | last host cmd
iwlwifi 0000:04:00.0: 0x00004008 | isr status reg
ieee80211 phy0: Hardware restart was requested
iwlwifi 0000:04:00.0: FW Error notification: type 0x00000000 cmd_id 0x00
iwlwifi 0000:04:00.0: FW Error notification: seq 0x0000 service 0x00000000
iwlwifi 0000:04:00.0: FW Error notification: timestamp 0x 4CE4B
iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting 0x2000000.
The controller in question is:
04:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 88)
Bisection pointed to the following commit and after I reverted it,
things seem to work fine again:
66fa2424df16 ("iwlwifi: fw api: support the new scan request FW API version")
Any idea what might be wrong with that commit and how to fix it
properly?
Thanks!
On Mon, Apr 23, 2018 at 03:39:45PM +0300, Luciano Coelho wrote:
> We had a bug in the scan command size for older firmwares. I have
> already made a fix for it, but I hadn't sent it out for upstream yet.
> I'll send it out now and soon send you a link to it in patchwork.
>
> You have two options: recompile the kernel with my patch or; use the
> latest version of the firmware from linux-firmware.git[1].
>
> I recommend upgrading the firmware, because we have a lot of other
> fixes and improvements there, but if you want to keep your distro's
> original firmware package, you can apply my patch instead.
>
> HTH and thanks for reporting!
I upgraded the firmware to iwlwifi-8265-36.ucode and the issue is gone
now. Thanks Luca!
On Mon, 2018-04-23 at 15:05 +0300, Mika Westerberg wrote:
> Hi,
Hi Mika,
> On my Lenovo X1 Carbon gen 5 system,after I upgraded to v4.17-rc1
> iwlwifi started to fail with following splats on dmesg:
>
> iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting
> 0x2000000.
> iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:04:00.0: Status: 0x00000100, count: 6
> iwlwifi 0000:04:00.0: Loaded firmware version: 31.560484.0
> iwlwifi 0000:04:00.0: 0x00000038 | BAD_COMMAND
[...]
> The controller in question is:
>
> 04:00.0 Network controller [0280]: Intel Corporation Wireless 8265
> / 8275 [8086:24fd] (rev 88)
>
> Bisection pointed to the following commit and after I reverted it,
> things seem to work fine again:
>
> 66fa2424df16 ("iwlwifi: fw api: support the new scan request FW API
> version")
>
> Any idea what might be wrong with that commit and how to fix it
> properly?
We had a bug in the scan command size for older firmwares. I have
already made a fix for it, but I hadn't sent it out for upstream yet.
I'll send it out now and soon send you a link to it in patchwork.
You have two options: recompile the kernel with my patch or; use the
latest version of the firmware from linux-firmware.git[1].
I recommend upgrading the firmware, because we have a lot of other
fixes and improvements there, but if you want to keep your distro's
original firmware package, you can apply my patch instead.
HTH and thanks for reporting!
[1] https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/iwlwifi-8265-36.ucode
--
Cheers,
Luca.
On Mon, 2018-04-23 at 15:39 +0300, Luciano Coelho wrote:
> On Mon, 2018-04-23 at 15:05 +0300, Mika Westerberg wrote:
> > Hi,
>
> Hi Mika,
>
>
> > On my Lenovo X1 Carbon gen 5 system,after I upgraded to v4.17-rc1
> > iwlwifi started to fail with following splats on dmesg:
> >
> > iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting
> > 0x2000000.
> > iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
> > iwlwifi 0000:04:00.0: Status: 0x00000100, count: 6
> > iwlwifi 0000:04:00.0: Loaded firmware version: 31.560484.0
> > iwlwifi 0000:04:00.0: 0x00000038 | BAD_COMMAND
>
> [...]
>
> > The controller in question is:
> >
> > 04:00.0 Network controller [0280]: Intel Corporation Wireless
> > 8265
> > / 8275 [8086:24fd] (rev 88)
> >
> > Bisection pointed to the following commit and after I reverted it,
> > things seem to work fine again:
> >
> > 66fa2424df16 ("iwlwifi: fw api: support the new scan request FW
> > API
> > version")
> >
> > Any idea what might be wrong with that commit and how to fix it
> > properly?
>
> We had a bug in the scan command size for older firmwares. I have
> already made a fix for it, but I hadn't sent it out for upstream
> yet.
> I'll send it out now and soon send you a link to it in patchwork.
Here's the patch that solves the problem with older FWs:
https://patchwork.kernel.org/patch/10356987/
--
Cheers,
Luca.