(adding netdev) On Wed, 2015-01-21 at 09:44 +0000, Russell King - ARM Linux wrote: > On Wed, Jan 21, 2015 at 08:46:29AM +0100, Robert Jarzmik wrote: > > Russell King - ARM Linux <li...@arm.linux.org.uk> writes: > > > > > What I'd suggest (and always have done) is: > > > > > > dev_err(&pdev->dev, "couldn't request main irq%d: %d\n", > > > irq, ret); > > I like it, it's even more compact, I'll use it for next patch version. > > BTW, this is an example why I have the policy of always ensuring that > the kernel messages print sufficient diagnostics. Right now, I have > a problem - since I rebooted my firewall a few nights ago, I now get > on one of my machines: > > rt6_redirect: source isn't a valid nexthop for redirect target > > and it spews that for a few minutes every 26 hours or so. No further > information, and it leaves you wondering "well, what was the invalid > next hop? What was the source?" > > Pretty much the only way to try and find out is to leave a tcpdump or > wireshark running for 24 hours to try and get a dump - which is not > that easy if you don't have lots of disk space. So, right now, I have > no way to diagnose the above. > > If it printed that information, then I'd be able to see what the > addresses were, and I'd probably be able to come up with a tcpdump > filter which didn't involve logging all IPv6 traffic. > > Kernel messages need to be smart. If not, they might as well just be > "The kernel encountered a problem. Abort, Retry or Fail?" >
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