On Fri, 23 Feb 2007 22:09:16 +0300 Sergei Shtylyov <[EMAIL PROTECTED]> wrote:
> Hello. > > Stephen Hemminger wrote: > > >>>This thread came up on kgdb-bugreport mailing list. Could you please > >>>suggest > >>>us what's the correct way of fixing this problem? > > >>>1. When running a kgdb on RTL8139 ethernet interface: 8139too driver > >>>prints > >>>too many "Out-of-sync dirty pointer" messages on console and gdb can't > >>>connect to kgdb stub. These messages can be suppressed, though it still > >>>results in connection failures frequently. > > >>We think this comes from calling the driver while the queue is stopped. > >>Drivers should not do horrible things when hard start is called with the > >>queue stopped, but unfortunately, at this time, at least some drivers > >>do explode or complain under that condition. > > > The kernel is built on a set of assumptions about calling context. Your > > out of tree code is violating one of them. Why not check for stopped queue > > and do some action to try and clear it, that is what netconsole does. > > The queue can't be stopped when the netpoll traffic trapping is enabled > (cause this effectively bypasses queue control), So, the stopped queue > indoication doesn't work also -- *that* is the problem. It's not at all > specific to KGBoE -- only to traffic trapping. You can't ask a device to send a packet when it has no resources. -- Stephen Hemminger <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
