On Tue, 2010-08-10 at 11:49 +0200, Joseph Landry wrote: > Package: linux-2.6 > Version: 2.6.32-15~bpo50+1 > Severity: important > > Hi, > I'm using the latest lenny-backport kernel on a new dell poweredge R710. > every few days I have a kernel panic similar to : Kernel panic - not > syncing: CRED: put_cred_rcu() sees f640ad80 with usage -163535872" Do you see the same message (apart from the numbers) or different message? [...] > we noticed something : when the server froze after a panic (before I > set it up to automatically switch to a crashkernel) , the other > servers connected to the same ethernet switch were unreachable over > the network. everything seems as if the ethernet card gets crazy and > starts sending random data . I can't say for sure ... Restarting the > faulty server gets everything back in order. [...] That's interesting. Could you try using a different Ethernet card in this server temporarily? (If you are using on-board Ethernet ports currently, just don't plug anything into them while you are doing this test.) Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
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