3.14.0-rc2: WARNING: at mm/slub.c:1007

From: Christian Kujau
Date: Thu Feb 13 2014 - 15:00:27 EST


Hi,

after upgrading from 3.13-rc8 to 3.14.0-rc2 on this PowerPC G4 machine,
the WARNING below was printed.

Shortly after, a lockdep warning appeared (possibly related to my
post to the XFS list yesterday[0]).

Even later in the log an out-of-memory error appeared, that may or may not
be relatd to that WARNING at all but which I'm trying to chase down ever
since 3.13, but which tends to appear more often lately.

Can anyone take a look if this is something to worry about?

Full dmesg & .config: http://nerdbynature.de/bits/3.14-rc2/mm/

Thanks,
Christian.

[0] http://oss.sgi.com/pipermail/xfs/2014-February/034054.html

------------[ cut here ]------------
WARNING: at /usr/local/src/linux-git/mm/slub.c:1007
Modules linked in: md5 ecb nfs i2c_powermac therm_adt746x ecryptfs arc4
firewire_sbp2 b43 usb_storage mac80211 cfg80211
CPU: 0 PID: 9025 Comm: nfsd Not tainted 3.14.0-rc2 #1
task: efbf8000 ti: ed2a0000 task.ti: ed2a0000
NIP: c00ccc28 LR: c00ccc20 CTR: 00000000
REGS: ed2a1980 TRAP: 0700 Not tainted (3.14.0-rc2)
MSR: 00021032 <ME,IR,DR,RI> CR: 22f82b82 XER: 20000000

GPR00: c00ccc20 ed2a1a30 efbf8000 00000000 ef96e550 00000000 00000000
00002ce0
GPR08: 00000000 00000001 efbf86f8 000005e7 82fc2b88 00000000 00000001
00080011
GPR16: 00000000 00000000 c0760000 00000000 ef96e564 00100100 00200200
c1203914
GPR24: 00000000 ef96e540 00000002 ef96fa80 00000000 00000000 ed2a0000
c1203900
NIP [c00ccc28] deactivate_slab+0x4c0/0x538
LR [c00ccc20] deactivate_slab+0x4b8/0x538
Call Trace:
[ed2a1a30] [c00ccc20] deactivate_slab+0x4b8/0x538 (unreliable)
[ed2a1ae0] [c055d5f0] __slab_alloc.constprop.77+0x260/0x38c
[ed2a1b50] [c00cd524] kmem_cache_alloc+0x118/0x140
[ed2a1b70] [c01de4bc] kmem_zone_alloc+0x94/0x108
[ed2a1ba0] [c01cccd4] xfs_inode_alloc+0x2c/0xd4
[ed2a1bc0] [c01cd7a4] xfs_iget+0x2e4/0x584
[ed2a1c30] [c020e664] xfs_lookup+0xc8/0xe4
[ed2a1c70] [c01d3c28] xfs_vn_lookup+0x64/0xbc
[ed2a1c90] [c00db3ac] lookup_real+0x30/0x70
[ed2a1ca0] [c00dc384] __lookup_hash+0x3c/0x58
[ed2a1cc0] [c00e1438] lookup_one_len+0x10c/0x15c
[ed2a1ce0] [c01a170c] nfsd4_encode_dirent+0xb4/0x328
[ed2a1d10] [c018f580] nfsd_readdir+0x1d4/0x288
[ed2a1d90] [c019d648] nfsd4_encode_readdir+0x138/0x1f4
[ed2a1dd0] [c01a1b18] nfsd4_encode_operation+0x8c/0xf0
[ed2a1df0] [c019aa4c] nfsd4_proc_compound+0x1b8/0x4f8
[ed2a1e30] [c0189d20] nfsd_dispatch+0x90/0x1a0
[ed2a1e50] [c0536b04] svc_process+0x3d0/0x698
[ed2a1e90] [c01895bc] nfsd+0xc0/0x120
[ed2a1eb0] [c004f8fc] kthread+0xbc/0xd0
[ed2a1f40] [c0010ae4] ret_from_kernel_thread+0x5c/0x64
Instruction dump:
7fe4fb78 800100b4 b9c10068 7d810120 7d808120 7c0803a6 382100b0 4bfffb00
80610048 4bf95dc5 2f830000 40beff4c <0fe00000> 4bffff44 815e000c 394a0001
---[ end trace 1f5ed3ea8b3e4403 ]---


--
BOFH excuse #65:

system needs to be rebooted
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