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Hi,
Sorry for the delay, couldn't test for quite some time due to some fried hardware, kernel.org bug report has been created now : https://bugzilla.kernel.org/show_bug.cgi?id=43152 Cheers, Mike. > Date: Fri, 16 Mar 2012 17:04:13 -0500 > From: jrnieder@gmail.com > To: mike-bugreport@hotmail.com > CC: eric.dumazet@gmail.com; ben@decadent.org.uk; kirjanov@gmail.com; netdev@vger.kernel.org; benoit.mortier@opensides.be; herbert@gondor.apana.org.au > Subject: Re: Sundance network driver (D-Link DFE-580TX) timeouts rendering interface unusable > > Hi again, > > Mike . wrote: > > >> Oh well, we also must make sure we held np->lock in TX completion when > >> doing our test to eventually call netif_wake_queue(), I missed it was > >> released too early. > >> > >> here is a more complete patch. > > > > I applied the patch, recompiled the module, loaded it into the kernel and > > started testing traffic on the interface with the following result : > > > > [ 1124.008030] ------------[ cut here ]------------ > > [ 1124.008101] WARNING: at /build/buildd-linux-2.6_3.2.1-2-i386-4wAPNj/linux-2.6-3.2.1/debian/build/source_i386_none/net/sched/sch_generic.c:255 dev_watchdog+0xb1/0x104() > > [ 1124.008201] Hardware name: > > [ 1124.008252] NETDEV WATCHDOG: eth1 (sundance): transmit queue 0 timed out > [...] > > After this the same repeat of transmit timeouts (as posted earlier) in the > > log untill I down the interface. > > Thanks. I assume current 3.3 release candidates behave the same way. > > Based on [2], it looks like v2.6.25-rc9~99^2~24 ([NET]: Add preemption > point in qdisc_run, 2008-03-28) made this easier to trip. > > As for the next step: I'd suggest posting a summary of the symptoms, > which kernel versions you have tested, and a link to [1] at > http://bugzilla.kernel.org/, product Drivers, component Network, and > letting us know the bug number so we can track it without forgetting > what has already been learned. > > Hope that helps, > Jonathan > > [1] http://thread.gmane.org/gmane.linux.network/219101 |