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Opened 22 months ago

Last modified 22 months ago

#22160 new defect

MT7620N(ramips) 2.4G stop work

Reported by: anonymous Owned by: developers
Priority: highest Milestone: Designated Driver (Trunk)
Component: kernel Version: Trunk
Keywords: kernel, ramips, mt7620, miwifi, wireless Cc:

Description

After kernel update to 4.4, MT7620N router 2.4G wireless dosen't work anymore, it will stop work after about 10 minutes, below is error message.

Mon Apr 4 20:51:41 2016 kern.err kernel: [ 3619.492968] softirq: huh, entered softirq 3 NET_RX 801f5eac with preempt_count 00000100, exited with 00000500?
Mon Apr 4 20:51:43 2016 kern.err kernel: [ 3620.133562] softirq: huh, entered softirq 3 NET_RX 801f5eac with preempt_count 00000100, exited with 00000500?
Mon Apr 4 20:51:44 2016 kern.err kernel: [ 3621.562371] softirq: huh, entered softirq 3 NET_RX 801f5eac with preempt_count 00000100, exited with 00000500?
Mon Apr 4 20:51:48 2016 kern.err kernel: [ 3624.137396] softirq: huh, entered softirq 3 NET_RX 801f5eac with preempt_count 00000100, exited with 00000500?
Mon Apr 4 20:51:50 2016 kern.err kernel: [ 3625.518691] softirq: huh, entered softirq 3 NET_RX 801f5eac with preempt_count 00000100, exited with 00000500?

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Change History (2)

comment:1 Changed 22 months ago by AndreiM

Interesting, I noticed similar sporadic messages on MT7620A, but the 2.4 GHz network remains stable, albeit performance can be erratic.

[49912.631866] softirq: huh, entered softirq 3 NET_RX 801f8748 with preempt_count 00000100, exited with 00000500?

I'm mentioning this in case your issue on MT7620N has a different root cause.

comment:2 Changed 22 months ago by anonymous

mt7620a+mt7612e, latest trunk, did notice random appearance of such kernel logs, quite strange though, since 2.4 GHz wireless was already disabled.

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