tags 602991 + unreproducible quit George Barnett wrote:
> We ended up moving to blessed openvz kernels on Centos 5.5 after > hitting a few more bugs in debian openvz. As such, I no longer have > any systems I could reproduce this on. Sorry I'm not able to be of > help. No problem. Thanks for the update. Ola, do the symptoms below look familiar to you? Kernel was 2.6.32-27. > We maintain a large number of OpenVZ containers on several hosts. > In the course of running these containers, we keep a number of NFS > mounts which are presented into the OpenVZ containers. > > We currently have 3 test machines we are able to test this on. All > are running the same image, netbooted. The Stack trace below is > from a 2 x 12 core AMD box, although we see the exact same crash > with the same cause on the Intel test nodes too (2 x X5650 6 core). > > When we stop all the containers quickly on a host, we see the following > repeatable crash: > > [ 317.100898] CT: 10018: stopped > [ 317.912269] BUG: unable to handle kernel NULL pointer dereference at (null) > [ 317.916307] IP: [<ffffffff812ea21e>] _spin_lock_bh+0xe/0x25 > [ 317.916307] PGD 100a5d0067 PUD 100a557067 PMD 0 > [ 317.916307] Oops: 0002 [#1] SMP > [ 317.916307] last sysfs file: > /sys/devices/system/cpu/cpu23/cache/index2/shared_cpu_map [...] > [ 317.916307] Pid: 7838, comm: umount Not tainted 2.6.32-5-openvz-amd64 #1 > dyomin H8DGU > [ 317.916307] RIP: 0010:[<ffffffff812ea21e>] [<ffffffff812ea21e>] > _spin_lock_bh+0xe/0x25 [...] > [ 317.916307] Call Trace: > [ 317.916307] [<ffffffffa01b97a4>] ? rpc_wake_up_queued_task+0x12/0x29 > [sunrpc] > [ 317.916307] [<ffffffffa01b9835>] ? rpc_killall_tasks+0x7a/0x9b [sunrpc] > [ 317.916307] [<ffffffffa0217fed>] ? nfs_umount_begin+0x34/0x3a [nfs] > [ 317.916307] [<ffffffff81106844>] ? sys_umount+0x11b/0x2e6 > [ 317.916307] [<ffffffff812ec6a5>] ? do_page_fault+0x2e0/0x2fc > [ 317.916307] [<ffffffff81010c12>] ? system_call_fastpath+0x16/0x1b > [ 317.916307] Code: e9 ff 5b c3 53 48 89 fb e8 a6 a4 d6 ff 48 89 df > f0 83 2f 01 79 05 e8 42 73 e9 ff 5b c3 53 48 89 fb e8 8d a4 d6 ff b8 > 00 00 01 00 <f0> 0f c1 03 0f b7 d0 c1 e8 10 39 c2 74 07 f3 90 0f b7 13 > eb f5 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
