I have the same problem on several different machines, both on 3.11.0-20 and 3.11.0-24.
For me it only happens on boot, and not entirely consistantly - Sometimes it works, sometimes it crashes. It does crash pretty often though, and I'm trying to find a way to reproduce consistently. [ 2.962760] Installing knfsd (copyright (C) 1996 o...@monad.swb.de). [ 2.973227] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 2.973436] IP: [<ffffffffa00a9618>] __rpc_clnt_handle_event+0x48/0xd0 [sunrpc] [ 2.973607] PGD 136103067 PUD 136102067 PMD 0 [ 2.973777] Oops: 0000 [#1] SMP [ 2.973907] Modules linked in: nfsd nfsv4 nfs_acl mac_hid auth_rpcgss shpchp vmw_vmci nfs fscache i2c_piix4 lockd lp sunrpc parport floppy mptspi mptscsih e1000 mptbase vmw_pvscsi vmxnet3 [ 2.974766] CPU: 1 PID: 511 Comm: mount Not tainted 3.11.0-24-generic #41~precise1-Ubuntu [ 2.974911] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/30/2013 [ 2.975092] task: ffff880135df8000 ti: ffff880136ffc000 task.ti: ffff880136ffc000 [ 2.975231] RIP: 0010:[<ffffffffa00a9618>] [<ffffffffa00a9618>] __rpc_clnt_handle_event+0x48/0xd0 [sunrpc] [ 2.975441] RSP: 0018:ffff880136ffdc18 EFLAGS: 00010283 [ 2.975554] RAX: ffff88013908ea80 RBX: ffff8801383dbe00 RCX: 0000000000000002 [ 2.975679] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 2.975797] RBP: ffff880136ffdc38 R08: ffff88013908e7b8 R09: 0000000000000000 [ 2.975916] R10: 0000000000000001 R11: 0000000000017960 R12: 0000000000000000 [ 2.976032] R13: ffff880135c86400 R14: 0000000000000000 R15: 0000000000000000 [ 2.976152] FS: 00007f82b8da7800(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000 [ 2.976299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.976403] CR2: 0000000000000010 CR3: 0000000136106000 CR4: 00000000000407e0 [ 2.976621] Stack: [ 2.976688] ffff880136ffdc28 0000000000000000 0000000000000000 ffff8801383dbe00 [ 2.976933] ffff880136ffdc68 ffffffffa00aa14a 0000000000000000 ffff880135c86400 [ 2.977182] 00000000ffffffff ffffffffa01c3de0 ffff880136ffdca8 ffffffff8174eeed [ 2.977427] Call Trace: [ 2.977505] [<ffffffffa00aa14a>] rpc_pipefs_event+0x6a/0xb0 [sunrpc] [ 2.977617] [<ffffffff8174eeed>] notifier_call_chain+0x4d/0x70 [ 2.977724] [<ffffffff8108ed28>] __blocking_notifier_call_chain+0x58/0x80 [ 2.977837] [<ffffffff8108ed66>] blocking_notifier_call_chain+0x16/0x20 [ 2.977964] [<ffffffffa00c4fdc>] rpc_fill_super+0xfc/0x1b0 [sunrpc] [ 2.978081] [<ffffffff811b75a0>] ? set_anon_super+0x30/0x30 [ 2.978190] [<ffffffffa00c4ee0>] ? rpc_kill_sb+0x110/0x110 [sunrpc] [ 2.978298] [<ffffffff811b8565>] mount_ns+0xa5/0xe0 [ 2.978400] [<ffffffffa00c3599>] rpc_mount+0x29/0x30 [sunrpc] [ 2.978503] [<ffffffff811b91c3>] mount_fs+0x43/0x1b0 [ 2.978603] [<ffffffff811d2e33>] ? find_filesystem+0x63/0x80 [ 2.978706] [<ffffffff811d4116>] vfs_kern_mount+0x76/0x120 [ 2.978807] [<ffffffff811d57a4>] do_new_mount+0xa4/0x1f0 [ 2.978907] [<ffffffff811d6e06>] do_mount+0x1e6/0x230 [ 2.979004] [<ffffffff811d6ee0>] SyS_mount+0x90/0xe0 [ 2.979101] [<ffffffff81753a1d>] system_call_fastpath+0x1a/0x1f [ 2.979204] Code: 01 00 00 48 89 de 48 8b 50 20 e8 54 f5 ff ff 48 85 c0 0f 84 8c 00 00 00 48 3d 00 f0 ff ff 77 5e 48 8b 7b 58 48 89 83 b0 00 00 00 <48> 8b 47 10 48 8b 50 38 31 c0 48 85 d2 74 44 ff d2 85 c0 74 3e [ 2.981267] RIP [<ffffffffa00a9618>] __rpc_clnt_handle_event+0x48/0xd0 [sunrpc] [ 2.981436] RSP <ffff880136ffdc18> [ 2.981516] CR2: 0000000000000010 [ 2.981626] ---[ end trace 3663d7a4a73c156e ]--- Please let me know if you guys need more info to resolve this. I'm afraid it makes NFS pretty useless here, right now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310350 Title: Oops __rpc_clnt_handle_event+0x48/0xd0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1310350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
