>> 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?
The server crashed two time since I submitted this bug : the first one is similar : [281132.706553] Kernel panic - not syncing: CRED: put_cred_rcu() sees f6236680 with usage -30 and is followed by several Oopses the second one is not: [38386.986977] BUG: unable to handle kernel NULL pointer dereference at 00000010 [38387.012306] IP: [<c102b85c>] task_rq_lock+0x25/0x5d [38387.026138] *pdpt = 000000003373f001 *pde = 0000000000000000 [38387.040577] Oops: 0000 [#1] SMP [...] do you want more details on these ? >> 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. Unfortunately we do not have a spare ethernet card on hand. I'll try if I find one. Joseph. -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/3b74788b-c8b6-4e4d-96ed-7b61027d2...@gmail.com
