> > Hi,
> >
> > with a vanilla 2.6.18.2 Kernel I get the following messages when I run a
> process with high CPU/memory consumption:
> >
> > Nov 8 15:08:24 linux kernel: BUG: unable to handle kernel paging
> request at virtual address 6e696c43
> > Nov 8 15:08:24 linux kernel: printing eip:
> > Nov 8 15:08:12 linux last message repeated 146 times
> > Nov 8 15:08:24 linux kernel: c043d3d5
> > Nov 8 15:08:24 linux kernel: *pde = 00000000
> > Nov 8 15:08:24 linux kernel: Oops: 0000 [#1]
> > Nov 8 15:08:24 linux kernel: SMP
> > Nov 8 15:08:24 linux kernel: Modules linked in:
> > Nov 8 15:08:24 linux kernel: CPU: 1
> > Nov 8 15:08:24 linux kernel: EIP: 0060:[<c043d3d5>] Not tainted
> VLI
> > Nov 8 15:08:24 linux kernel: EFLAGS: 00010246 (2.6.18.2 #8)
> > Nov 8 15:08:24 linux kernel: EIP is at rpcauth_refreshcred+0x15/0x50
> > Nov 8 15:08:24 linux kernel: eax: df6df240 ebx: df6df240 ecx:
> 00000001 edx: 6e696c2f
> > Nov 8 15:08:24 linux kernel: esi: df1b5000 edi: 00000000 ebp:
> df6df2a8 esp: d8ccfd00
> > Nov 8 15:08:24 linux kernel: ds: 007b es: 007b ss: 0068
> > Nov 8 15:08:24 linux kernel: Process ln (pid: 11343, ti=d8cce000
> task=d5d5a030 task.ti=d8cce000)
> > Nov 8 15:08:24 linux kernel: Stack: df6df240 00000000 c043bfcd df6df240
> 00000000 d8ccfd48 d8ccfd20 c0436ecd
> > Nov 8 15:08:24 linux kernel: 00000000 00000000 df1e1410 df1b5000
> d8ccfd58 00000006 c01ff735 dd24e7a4
> > Nov 8 15:08:24 linux kernel: df1e12f8 df1e12f0 c050ee20 d8ccfd68
> 00000006 df1b5000 00000017 d8ccfed8
> > Nov 8 15:08:24 linux kernel: Call Trace:
> > Nov 8 15:08:24 linux kernel: [<c043bfcd>] __rpc_execute+0x4d/0x1f0
> > Nov 8 15:08:24 linux kernel: [<c0436ecd>] rpc_call_sync+0x8d/0xb0
> > Nov 8 15:08:24 linux kernel: [<c01ff735>] nfs_proc_symlink+0xd5/0x150
> > Nov 8 15:08:24 linux kernel: [<c01f8159>] nfs_symlink+0x89/0x190
> > Nov 8 15:08:24 linux kernel: [<c0175556>] d_alloc+0xf6/0x180
> > Nov 8 15:08:24 linux kernel: [<c0175b1d>] __d_lookup+0x8d/0x110
> > Nov 8 15:08:24 linux kernel: [<c0269e8b>]
> _atomic_dec_and_lock+0x2b/0x50
> > Nov 8 15:08:24 linux kernel: [<c01793e3>] mntput_no_expire+0x13/0x70
> > Nov 8 15:08:24 linux kernel: [<c016bbe0>] __link_path_walk+0x3f0/0xef0
> > Nov 8 15:08:24 linux kernel: [<c0175b1d>] __d_lookup+0x8d/0x110
> > Nov 8 15:08:24 linux kernel: [<c01f8841>] nfs_permission+0xb1/0x160
> > Nov 8 15:08:24 linux kernel: [<c01f8790>] nfs_permission+0x0/0x160
> > Nov 8 15:08:24 linux kernel: [<c016b23a>] permission+0xba/0xe0
> > Nov 8 15:08:24 linux kernel: [<c016bb83>] __link_path_walk+0x393/0xef0
> > Nov 8 15:08:24 linux kernel: [<c01793e3>] mntput_no_expire+0x13/0x70
> > Nov 8 15:08:24 linux kernel: [<c016c74b>] link_path_walk+0x6b/0xd0
> > Nov 8 15:08:24 linux kernel: [<c0175b1d>] __d_lookup+0x8d/0x110
> > Nov 8 15:08:24 linux kernel: [<c01f8790>] nfs_permission+0x0/0x160
> > Nov 8 15:08:24 linux kernel: [<c016b23a>] permission+0xba/0xe0
> > Nov 8 15:08:24 linux kernel: [<c016e511>] vfs_symlink+0x91/0x100
> > Nov 8 15:08:24 linux kernel: [<c016e5f7>] sys_symlinkat+0x77/0xc0
> > Nov 8 15:08:24 linux kernel: [<c016e651>] sys_symlink+0x11/0x20
> > Nov 8 15:08:24 linux kernel: [<c0102b4d>] sysenter_past_esp+0x56/0x79
> > Nov 8 15:08:24 linux kernel: Code: e8 31 16 ce ff 83 c4 10 eb a2 8d b6
> 00 00 00 00 8d bf 00 00 00 00 56 53 8b 70 28 89 c3 f6 05 68 da 67 c0 10 75
> 16 8b 56 08 89 d8 <ff> 52 14 8
> > 5 c0 78 04 5b 5e c3 90 89 43 18 5b 5e c3 56 8b 40 10
> > Nov 8 15:08:24 linux kernel: EIP: [<c043d3d5>]
> rpcauth_refreshcred+0x15/0x50 SS:ESP 0068:d8ccfd00
> >
> > Anyone knows what could be going wrong ?
>
> Some credential appears to be corrupt. What mount options are you
> running with?
I am not passing any special options in pxe or dhcp, so I think the kernel defaults should be used to mount the nfs root ...
The serverside export should be rw,no_root_squash,async.
Best regards,
Marco
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