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SubjectRe: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer
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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?



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