Hi, thanks for your help.
Am 08.04.2015 um 16:42 schrieb Yuval Mintz: >>> I'have installed a new DELL VRTX M620 Blade with kernel 3.18.11. >>> After system startup I tried to activate the kernel netconsole with remote >> logging enabled. >>> >>> I executed the following command and the shell I issued it becomes >> unresponsive and hangs. >>> >>> # modprobe netconsole >> netconsole="@/eth0,514@10.1.10.197/00:10:db:fc:60:0c" >>> >>> The system load increases slowly and the CPU #11 uses 100% of soft >>> irq. Only a soft reset witohut loading the netconsole module after startup >> solves the issue. > > I suspect this is a regression introduced by 9a2620c87745 > "bnx2x: prevent WARN during driver unload". > > bnx2x locks & unlocks spin_lock_bh() during the napi poll, which shouldn't > be done while interrupts are disabled. This break interoperability with > netpoll, > as it disables irqs prior to sending the skb on the bnx2x's interface. > > Can you please try compiling your kernel without CONFIG_NET_RX_BUSY_POLL? > I suspect that might solve your issue. I compiled my kernel without CONFIG_NET_RX_BUSY_POLL. ... # CONFIG_NET_RX_BUSY_POLL is not set ... I tried multiple times to insert an remove the netconsole module. There was no error anymore. Compiling the kernel without CONFIG_NET_RX_BUSY_POLL solves the issue. At least for me. Thanks Urban -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
