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Message-ID: <2223fc29fdbd5a37494454d95952c1b9f8373f3e.camel@suse.com>
Subject: Re: rtl8152 / power management kernel hang
From:   Oliver Neukum <oneukum@suse.com>
To:     Thiago Macieira <thiago.macieira@intel.com>,
        netdev@vger.kernel.org, Hayes Wang <hayeswang@realtek.com>
Cc:     linux-usb@vger.kernel.org
Date:   Thu, 15 Apr 2021 12:10:58 +0200
In-Reply-To: <7261663.lHksN3My1W@tjmaciei-mobl1>
References: <7261663.lHksN3My1W@tjmaciei-mobl1>
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Am Dienstag, den 13.04.2021, 13:57 -0700 schrieb Thiago Macieira:
> This has been happening for at least a year but I've only now decided to 
> report it.
> 
> Kernel 5.11.11
> Symptom: 
> - partial kernel freeze
> - some kernel tasks end up in state D and never leave it
>     (notably ipv6_addrconf)
> - problem propagates as other userspace processes try to use
>   networking, such as /sbin/ip trying to set the device down
> - normal reboot impossible, Alt+SysRq,B is necessary
> 
> Steps to reproduce: use device for a few hours. I'm using it in a bonded 
> connection, but I don't think that's a required condition.
> 
> Workaround: disable power management on the device via PowerTop before the 
> problem occurs.

Hi,

is this device part of a docking station?

	Regards
		Oliver