"Magic got poked" error message during backups

  • 7006627
  • 12-Aug-2010
  • 08-Nov-2012

Environment

Novell Open Enterprise Server 2 (OES 2) Linux Support Pack 2

Resolution

Description:
Cause of this error is that NSS free called with a pointer which is not allocated with NSS malloc.

Fix:
Exclude the /var/opt/novell/nclmnt directory from backups.  This is the default location of where a Novell client places a mountpoint when using nwlogin.

Additional Information

Complete output as seen in /var/log/messages
Jul 31 17:26:32 testserver kernel:  Magic got poked and is 0x4d4d4500
Jul 31 17:26:32 testserver kernel:  Chunksize  is 0x3a
Jul 31 17:26:32 testserver kernel:  umem = ce070910, sMem = ce070900
Jul 31 17:26:32 testserver kernel:  ce070000  0xce4bc000 0xd7f0f000 0x00000140
0xce070140
... (Large series of hex numbers here) ...
Jul 31 17:26:32 testserver kernel: ------------[ cut here ]------------
Jul 31 17:26:32 testserver kernel: kernel BUG at
/usr/src/packages/BUILD/nss/modules-build/nsslnxlib/nssLnxDummy.c:460!
Jul 31 17:26:32 testserver kernel: invalid opcode: 0000 [#1]
Jul 31 17:26:32 testserver kernel: SMP
Jul 31 17:26:32 testserver kernel: last sysfs file:
/devices/pci0000:00/0000:00:00.0/irq
Jul 31 17:26:32 testserver kernel: Modules linked in: nebdrv zapi nsslsa nssmanage
nsszlss nsscomn ndpmod nss nsslibrary nsslnxlib libnss novfs admindrv nwraid
crc32c libcrc32c iscsi_tcp libiscsi scsi_transport_iscsi ipv6 sr_mod dock nvram
button battery ac apparmor fuse loop dm_mod usb_storage usbhid uhci_hcd
ehci_hcd ide_cd usbcore cdrom bnx2 e1000 reiserfs ata_piix libata generic edd
fan thermal processor sg megaraid_sas piix sd_mod scsi_mod ide_disk ide_core
Jul 31 17:26:32 testserver kernel: CPU:    1
Jul 31 17:26:32 testserver kernel: EIP:    0060:[<f92ce601>]    Tainted: GF      VLI
Jul 31 17:26:32 testserver kernel: EFLAGS: 00010246 
(2.6.16.60-0.66.1.1624.1.PTF.624693-bigsmp #1)
Jul 31 17:26:32 testserver kernel: EIP is at NMM_Free+0x30/0x21a [nsslnxlib]
Jul 31 17:26:32 testserver kernel: eax: 0000003a   ebx: ce071000   ecx: 0000e0ff 
edx: 00000286
Jul 31 17:26:32 testserver kernel: esi: ce071000   edi: ce070000   ebp: ce070900 
esp: f2c11eac
Jul 31 17:26:32 testserver kernel: ds: 007b   es: 007b   ss: 0068
Jul 31 17:26:32 testserver kernel: Process nss 29 (pid: 7712, threadinfo=f2c10000
task=f33f2e10)
Jul 31 17:26:32 testserver kernel: Stack: <0>f92d0c7c ce070ff0 00540048 0000004d
00000000 00000000 dfc29fac ce070910
Jul 31 17:26:32 testserver kernel:        dad87108 dad87044 e1eef644 f92ce807 d31fe990
dad87010 d31fe690 fba0e556
Jul 31 17:26:32 testserver kernel:        f33f2e10 dfc010e0 ce070910 fbd39169 db853c94
db853c94 f7e2c810 d31fe990
Jul 31 17:26:32 testserver kernel: Call Trace:
Jul 31 17:26:32 testserver kernel:  [<f92ce807>] Free+0x1c/0x20 [nsslnxlib]
Jul 31 17:26:32 testserver kernel:  [<fba0e556>] LB_free+0x26/0x40 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<fbd39169>] NAMED_BeastCleanupNames+0x60/0x37c
[nsscomn]
Jul 31 17:26:32 testserver kernel:  [<fba091ea>] NSSMPK_LockNss+0x3c/0x56 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<fba0e55b>] LB_free+0x2b/0x40 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<fbd394b1>] NAMED_BST_Destruct+0x2c/0x31
[nsscomn]
Jul 31 17:26:32 testserver kernel:  [<fbcc1ee4>] BST_uninit+0x23/0x33 [nsscomn]
Jul 31 17:26:32 testserver kernel:  [<fbcc1fad>] BST_free+0xf/0x3f [nsscomn]
Jul 31 17:26:32 testserver kernel:  [<fbcc8215>] BST_SignalFlush+0x20a/0x235 [nsscomn]
Jul 31 17:26:32 testserver kernel:  [<fba091ea>] NSSMPK_LockNss+0x3c/0x56 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<c02b3883>] __down_failed_interruptible+0x7/0xc
Jul 31 17:26:32 testserver kernel:  [<fba0ef9b>] Wait+0x61/0x143 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<f93faf31>] do_work+0x42/0x6d [nss]
Jul 31 17:26:32 testserver kernel:  [<f93faeef>] do_work+0x0/0x6d [nss]
Jul 31 17:26:32 testserver kernel:  [<fba0edb2>] startThread+0x5e/0x78 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<fba0ed54>] startThread+0x0/0x78 [nsslibrary]
Jul 31 17:26:32 testserver kernel:  [<c0102005>] kernel_thread_helper+0x5/0xb
Jul 31 17:26:32 testserver kernel: Code: ec 1c 89 c3 85 c0 0f 84 97 00 00 00 8d 68 f0
81 7d 0c 58 58 41 42 0f 85 87 00 00 00 8b 40 f0 3d 4d 45 4d 4d 74 0d e9 80 00
00 00 <0f> 0b cc 01 a4 0c 2d f9 c7 45 0c 59 59 46 42 8b 45 04 a8 10 74