Bug 85071 - mwifiex_usb_submit_rx_urb: dev_alloc_skb failed during throughput iperf teste when conected to 5GHz
Summary: mwifiex_usb_submit_rx_urb: dev_alloc_skb failed during throughput iperf teste...
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: network-wireless (show other bugs)
Hardware: ARM Linux
: P1 blocking
Assignee: drivers_network-wireless@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-09-23 21:33 UTC by Marek Belisko
Modified: 2018-11-25 07:31 UTC (History)
4 users (show)

See Also:
Kernel Version: 3.9
Subsystem:
Regression: No
Bisected commit-id:

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Description Marek Belisko 2014-09-23 21:33:05 UTC 
Doing some throughput testing (with iperf) in 5GHz I got following failures:
[ 221.521799] usb 1-1: mwifiex_usb_submit_rx_urb: dev_alloc_skb failed

and after then card is unusable only reboot helps.

I checked which which size fails to allocate and it's 4096 bytes. I
was looking to changes in never kernel releases but I cannot find
anything obvious (also tried backports v3.16 but issue is still there). When connected to 2.4GHz I can reproduce issue with iperf but must also ping wifi deviceh. I'm using FW version mwifiex 1.0 (14.68.29.p26).

On device with usb wifi I'm running iperf server: iperf -s -u -i1
on other device run: iperf -c IPADDR -u -b 100m

Marek
Comment 1 Ganapathi Bhat 2018-11-25 07:31:15 UTC 
Hi Marek,

Do you still see this issue?

Thanks,
Ganapathi
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