Messages in this thread | | | Date | Wed, 5 Feb 2014 20:43:46 +0000 | From | Andrew Cooper <> | Subject | Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer |
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On 05/02/2014 20:23, Zoltan Kiss wrote: > On 04/02/14 19:47, Michael Chan wrote: >> On Fri, 2014-01-31 at 14:29 +0100, Zoltan Kiss wrote: >>> [ 5417.275472] WARNING: at net/sched/sch_generic.c:255 >>> dev_watchdog+0x156/0x1f0() >>> [ 5417.275474] NETDEV WATCHDOG: eth1 (bnx2): transmit queue 2 timed out >> >> The dump shows an internal IRQ pending on MSIX vector 2 which matches >> the the queue number that is timing out. I don't know what happened to >> the MSIX and why the driver is not seeing it. Do you see an IRQ error >> message from the kernel a few seconds before the tx timeout message? > > I haven't seen any IRQ related error message. Note, this is on Xen > 4.3.1. Now I have new results with a reworked version of the patch, > unfortunately it still has this issue. Here is a bnx2 dump, lspci > output and some Xen debug output (MSI and interrupt bindings, I have > more if needed).
You need debug-keys 'Q' as well to map between the PCI devices and Xen IRQs
~Andrew
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