My "fix" seems to have killed something, does any one read this:
[ 3901.076315] sysctl: The scan_unevictable_pages sysctl/node-interface has
been disabled for lack of a legitimate use case. If
you have one, please send an email to linux...@kvack.org.
[456362.837985] ------------[ cut here ]------------
[456362.838013] WARNING: CPU: 1 PID: 5628 at
/build/buildd/linux-3.13.0/fs/nfs/idmap.c:547 nfs_idmap_legacy_upcall+0x196/0x1
b0 [nfsv4]()
[456362.838015] Modules linked in: nfsv4 ppdev crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 nfsd
vmw_balloon auth_rpcgss nfs_acl lrw nfs gf128mul glue_helper lockd ablk_helper
cryptd sunrpc fscache serio_raw parport_pc v mw_vmci lp
parport mptspi mptscsih psmouse mptbase e1000 floppy
[456362.838070] CPU: 1 PID: 5628 Comm: smbd Not tainted 3.13.0-36-generic
#63-Ubuntu
[456362.838072] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 07/09/2012
[456362.838074] 0000000000000009 ffff880099555790 ffffffff8171e569
0000000000000000
[456362.838079] ffff8800995557c8 ffffffff8106775d ffff88009af12400
000000000000000e
[456362.838082] ffff8800a3557e80 ffff8800ba319720 ffff88009af12430
ffff8800995557d8
[456362.838086] Call Trace:
[456362.838096] [<ffffffff8171e569>] dump_stack+0x45/0x56
[456362.838101] [<ffffffff8106775d>] warn_slowpath_common+0x7d/0xa0
[456362.838104] [<ffffffff8106783a>] warn_slowpath_null+0x1a/0x20
[456362.838116] [<ffffffffa023fac6>] nfs_idmap_legacy_upcall+0x196/0x1b0
[nfsv4]
[456362.838122] [<ffffffff812cdb9b>] request_key_and_link+0x34b/0x4d0
[456362.838126] [<ffffffff812ce380>] ? user_revoke+0x40/0x40
[456362.838130] [<ffffffff812c9b50>] ? keyring_alloc+0x80/0x80
[456362.838134] [<ffffffff812cddde>] request_key_with_auxdata+0x1e/0x60
[456362.838138] [<ffffffff81724da2>] ? mutex_lock+0x12/0x2f
[456362.838149] [<ffffffffa023f5f7>] nfs_idmap_get_key+0x1a7/0x1c0 [nfsv4]
[456362.838163] [<ffffffffa024004f>] nfs_map_group_to_gid+0xef/0x150 [nfsv4]
[456362.838173] [<ffffffffa02376e5>] decode_getfattr_attrs+0x1475/0x14b0
[nfsv4]
[456362.838184] [<ffffffffa02377ac>]
decode_getfattr_generic.constprop.102+0x8c/0xf0 [nfsv4]
[456362.838194] [<ffffffffa0237e90>] ? nfs4_xdr_dec_access+0xa0/0xa0 [nfsv4]
[456362.838203] [<ffffffffa0237f00>] nfs4_xdr_dec_getattr+0x70/0x80 [nfsv4]
[456362.838245] [<ffffffffa00e8306>] rpcauth_unwrap_resp+0x86/0xd0 [sunrpc]
[456362.838256] [<ffffffffa0237e90>] ? nfs4_xdr_dec_access+0xa0/0xa0 [nfsv4]
[456362.838265] [<ffffffffa00daf6f>] call_decode+0x1df/0x870 [sunrpc]
[456362.838274] [<ffffffffa00dad90>] ? call_refreshresult+0x170/0x170 [sunrpc]
[456362.838282] [<ffffffffa00dad90>] ? call_refreshresult+0x170/0x170 [sunrpc]
[456362.838293] [<ffffffffa00e5d74>] __rpc_execute+0x84/0x400 [sunrpc]
[456362.838304] [<ffffffffa00e6cee>] rpc_execute+0x5e/0xa0 [sunrpc]
[456362.838313] [<ffffffffa00dd1d0>] rpc_run_task+0x70/0x90 [sunrpc]
[456362.838321] [<ffffffffa0220646>] nfs4_call_sync_sequence+0x56/0x80 [nfsv4]
[456362.838329] [<ffffffffa0220f2e>] _nfs4_proc_getattr+0xbe/0xd0 [nfsv4]
[456362.838338] [<ffffffffa022749a>] nfs4_proc_getattr+0x5a/0xd0 [nfsv4]
[456362.838367] [<ffffffffa015290f>] __nfs_revalidate_inode+0xbf/0x310 [nfs]
[456362.838376] [<ffffffffa0152c56>] nfs_revalidate_inode+0x36/0x60 [nfs]
[456362.838386] [<ffffffffa0152cd7>] nfs_getattr+0x57/0x1a0 [nfs]
[456362.838390] [<ffffffff811c1dc9>] vfs_getattr_nosec+0x29/0x40
[456362.838393] [<ffffffff811c1e9d>] vfs_getattr+0x2d/0x40
[456362.838396] [<ffffffff811c1f72>] vfs_fstatat+0x62/0xa0
[456362.838399] [<ffffffff811c2442>] SYSC_newlstat+0x22/0x40
[456362.838402] [<ffffffff811c265e>] SyS_newlstat+0xe/0x10
[456362.838406] [<ffffffff8172efad>] system_call_fastpath+0x1a/0x1f
[456362.838408] ---[ end trace 449db9ba0f587919 ]---
as a crash in nfs_idmap_legacy_upcall ?
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https://bugs.launchpad.net/bugs/1378691
Title:
nfs4 id mapping unstable
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