* problems with mwifiex_usb, hangs under load, firmware in bad state
@ 2015-10-27 19:15 Chris Kuethe
2015-10-28 14:15 ` Amitkumar Karwar
0 siblings, 1 reply; 6+ messages in thread
From: Chris Kuethe @ 2015-10-27 19:15 UTC (permalink / raw)
To: linux-wireless
Like others, I'm having problems with mwifiex_usb on a Surface 2 Pro,
with the latest firmware "driver_version = mwifiex 1.0 (14.68.29.p38)"
and the latest release candidate kernel (4.3.0rc7)
Every 5-10 seconds, even while idle, I'll get a kernel message:
usb 1-2: Rx of mgmt packet failed
Under load (a big scp or a couple of kernel source tarballs will do
the trick), I get a huge amount of log spam, one message per packet:
usb 1-2: data: -ENOSR is returned
Occasionally I'll also see
usb 1-2: mwifiex_usb_submit_rx_urb: dev_alloc_skb failed
After a while, I get the dreaded firmware bad state and the only fix
is to power cycle the machine. Suspend doesn't reset the hardware, and
attempting to rmmod/modprobe mwifiex_usb will crash my machine.
usb 1-2: mwifiex_cmd_timeout_func: Timeout cmd id = 0x6, act = 0x3
usb 1-2: num_data_h2c_failure = 0
usb 1-2: num_cmd_h2c_failure = 0
usb 1-2: is_cmd_timedout = 1
usb 1-2: num_tx_timeout = 0
usb 1-2: last_cmd_index = 0
usb 1-2: last_cmd_id: 06 00 28 00 28 00 28 00 28 00
usb 1-2: last_cmd_act: 03 00 13 00 13 00 13 00 13 00
usb 1-2: last_cmd_resp_index = 4
usb 1-2: last_cmd_resp_id: 28 80 28 80 28 80 28 80 28 80
usb 1-2: last_event_index = 3
usb 1-2: last_event: 37 00 33 00 37 00 33 00 33 00
usb 1-2: data_sent=0 cmd_sent=0
usb 1-2: ps_mode=0 ps_state=0
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: Ignore scan. Card removed or firmware in bad state
usb 1-2: scan failed: -14
usb 1-2: PREP_CMD: FW is in bad state
usb 1-2: PREP_CMD: FW is in bad state
IPv6: ADDRCONF(NETDEV_UP): wlx281878fd2432: link is not ready
usb 1-2: PREP_CMD: FW is in bad state
This is reproducible all the way up to 4.3.0-rc7 which includes the patch from
http://www.spinics.net/lists/netdev/msg334367.html
that was suggested as a fix in
http://www.spinics.net/lists/linux-wireless/msg139095.html
I was able to reproduce this with after turning up debugging (echo
0xffffffff > /sys/kernel/debug/mwifiex/mlan0/debug_mask) - the
resulting trace is 1.4GB. Interested parties can contact me for a
link, or tell me what I should grep for...
--
GDB has a 'break' feature; why doesn't it have 'fix' too?
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: problems with mwifiex_usb, hangs under load, firmware in bad state
2015-10-27 19:15 problems with mwifiex_usb, hangs under load, firmware in bad state Chris Kuethe
@ 2015-10-28 14:15 ` Amitkumar Karwar
2015-10-28 19:13 ` Chris Kuethe
0 siblings, 1 reply; 6+ messages in thread
From: Amitkumar Karwar @ 2015-10-28 14:15 UTC (permalink / raw)
To: Chris Kuethe, linux-wireless
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: problems with mwifiex_usb, hangs under load, firmware in bad state
2015-10-28 14:15 ` Amitkumar Karwar
@ 2015-10-28 19:13 ` Chris Kuethe
2015-10-29 6:59 ` Chris Kuethe
0 siblings, 1 reply; 6+ messages in thread
From: Chris Kuethe @ 2015-10-28 19:13 UTC (permalink / raw)
To: Amitkumar Karwar; +Cc: linux-wireless
On Wed, Oct 28, 2015 at 7:15 AM, Amitkumar Karwar <akarwar@marvell.com> wrote:
> Thanks for reporting the problem. These two messages are actually warnings and not genuine error. They are expected during heavy traffic.
> I will submit a patch to suppress them. Meanwhile you can comment them out in your code.
Done.
>> Occasionally I'll also see
>> usb 1-2: mwifiex_usb_submit_rx_urb: dev_alloc_skb failed
>
> Do your machine have enough space when this error occurs? Can you check if this problem is still observed when above two error messages are suppressed?
Yes. I have lots of free space and memory. This problem is
reproducible when after removing those two error logs.
> Can you remove those two messages and share the log to me for analysis?
Link to log sent via private email.
> Also, share if there is any definite procedure so that we can try to recreate the issue at our end.
My test is simply to run some big wgets in a loop and wait for the
errors. Sometimes it happens after a few hundred MB, sometimes after a
few GB.
--
GDB has a 'break' feature; why doesn't it have 'fix' too?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: problems with mwifiex_usb, hangs under load, firmware in bad state
2015-10-28 19:13 ` Chris Kuethe
@ 2015-10-29 6:59 ` Chris Kuethe
2015-10-29 8:42 ` Amitkumar Karwar
0 siblings, 1 reply; 6+ messages in thread
From: Chris Kuethe @ 2015-10-29 6:59 UTC (permalink / raw)
To: Amitkumar Karwar; +Cc: linux-wireless
On Wed, Oct 28, 2015 at 12:13 PM, Chris Kuethe <chris.kuethe@gmail.com> wrote:
>> Also, share if there is any definite procedure so that we can try to recreate the issue at our end.
>
> My test is simply to run some big wgets in a loop and wait for the
> errors. Sometimes it happens after a few hundred MB, sometimes after a
> few GB.
Another data point: If the firmware crashes on a 2.4GHz network, I can
switch to 5Ghz (or vice versa) and use it again ... once.
--
GDB has a 'break' feature; why doesn't it have 'fix' too?
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: problems with mwifiex_usb, hangs under load, firmware in bad state
2015-10-29 6:59 ` Chris Kuethe
@ 2015-10-29 8:42 ` Amitkumar Karwar
[not found] ` <CAGHP0pL90miDhicw1uE0HuZh1HDx4gSTZ-c7WV8L++Gvny=ugA@mail.gmail.com>
0 siblings, 1 reply; 6+ messages in thread
From: Amitkumar Karwar @ 2015-10-29 8:42 UTC (permalink / raw)
To: Chris Kuethe; +Cc: linux-wireless
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^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: problems with mwifiex_usb, hangs under load, firmware in bad state
[not found] ` <CAGHP0pL90miDhicw1uE0HuZh1HDx4gSTZ-c7WV8L++Gvny=ugA@mail.gmail.com>
@ 2015-10-29 9:07 ` Amitkumar Karwar
0 siblings, 0 replies; 6+ messages in thread
From: Amitkumar Karwar @ 2015-10-29 9:07 UTC (permalink / raw)
To: Chris Kuethe; +Cc: linux-wireless
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^ permalink raw reply [flat|nested] 6+ messages in thread
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2015-10-27 19:15 problems with mwifiex_usb, hangs under load, firmware in bad state Chris Kuethe
2015-10-28 14:15 ` Amitkumar Karwar
2015-10-28 19:13 ` Chris Kuethe
2015-10-29 6:59 ` Chris Kuethe
2015-10-29 8:42 ` Amitkumar Karwar
[not found] ` <CAGHP0pL90miDhicw1uE0HuZh1HDx4gSTZ-c7WV8L++Gvny=ugA@mail.gmail.com>
2015-10-29 9:07 ` Amitkumar Karwar
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