I have several sles-9-i586 ibm bladeservers with the zlm agent installed on
them, and it seems like when cron runs and activates some zlm agent
activity of some kind, it freezes the servers. This happens consistently on
all my blades running 32-bit sles9 if they have the zlm7 agent installed.
The servers are running VMWare GSX server 3.2.1 hosting one or more virtual
machines each. This happens whether the virtual machines are running or not.

Below is the piece of the /var/log/messages from one of the servers that
this happens to at the time when it froze.

<pre>
Apr 12 12:56:20 vs014 kernel: ------------[ cut here ]------------
Apr 12 12:56:20 vs014 kernel: kernel BUG at kernel/signal.c:349!
Apr 12 12:56:20 vs014 kernel: invalid operand: 0000 [#1]
Apr 12 12:56:20 vs014 kernel: SMP
Apr 12 12:56:20 vs014 kernel: CPU: 1
Apr 12 12:56:20 vs014 kernel: EIP: 0060:[<c0138277>] Tainted: PF U
Apr 12 12:56:20 vs014 kernel: EFLAGS: 00210046 (2.6.5-7.252-bigsmp
SLES9_SP3_BRANCH-200602141111040000)
Apr 12 12:56:20 vs014 kernel: EIP is at __exit_signal+0xd7/0x110
Apr 12 12:56:20 vs014 kernel: eax: f5dd4000 ebx: 00000000 ecx: 0000004e
edx: 00000000
Apr 12 12:56:20 vs014 kernel: esi: f5dd4000 edi: 00000000 ebp: 00000000
esp: f670fb60
Apr 12 12:56:20 vs014 kernel: ds: 007b es: 007b ss: 0068
Apr 12 12:56:20 vs014 kernel: Process zmd-bin (pid: 4720,
threadinfo=f670e000 task=cdd7ecd0)
Apr 12 12:56:20 vs014 kernel: Stack: f5dd4000 00000000 00000000 c012cec3
00000008 f5dd40b8 f5dd4000 f5831d80
Apr 12 12:56:20 vs014 kernel: c01817a5 00000080 c0175e79 f670e000
00000000 f5e22c60 00000000 cde3d980
Apr 12 12:56:20 vs014 kernel: f5977f04 f5977a00 f63c3780 cdc7ae00
f670fbb4 f670fe50 f7c9bf20 ffffffb0
Apr 12 12:56:20 vs014 kernel: Call Trace:
Apr 12 12:56:20 vs014 kernel: [<c012cec3>] release_task+0x73/0x1e0
Apr 12 12:56:20 vs014 kernel: [<c01817a5>] flush_old_exec+0x675/0xa20
Apr 12 12:56:20 vs014 kernel: [<c0175e79>] vfs_read+0xd9/0x160
Apr 12 12:56:20 vs014 kernel: [<c01a29ec>] load_elf_binary+0x3ec/0x1526
Apr 12 12:56:20 vs014 kernel: [<c015fee2>] kunmap_high+0x12/0x90
Apr 12 12:56:20 vs014 kernel: [<c01522f8>] generic_file_read+0x98/0xc0
Apr 12 12:56:20 vs014 kernel: [<c012a790>] autoremove_wake_function+0x0/0x40
Apr 12 12:56:20 vs014 kernel: [<c0180da0>] search_binary_handler+0x90/0x260
Apr 12 12:56:20 vs014 kernel: [<c01a0fa8>] load_script+0x238/0x240
Apr 12 12:56:20 vs014 kernel: [<c015ff88>] kmap_high+0x28/0x255
Apr 12 12:56:20 vs014 kernel: [<c01567ad>] __alloc_pages+0xad/0x320
Apr 12 12:56:20 vs014 kernel: [<c012a790>] autoremove_wake_function+0x0/0x40
Apr 12 12:56:20 vs014 kernel: [<c018249b>] copy_strings+0x1eb/0x250
Apr 12 12:56:20 vs014 kernel: [<c0180da0>] search_binary_handler+0x90/0x260
Apr 12 12:56:20 vs014 kernel: [<c0182707>] do_execve+0x1d7/0x370
Apr 12 12:56:20 vs014 kernel: [<c01879a2>] getname+0x82/0xb0
Apr 12 12:56:20 vs014 kernel: [<c0107675>] sys_execve+0x35/0x70
Apr 12 12:56:20 vs014 kernel: [<c0109199>] sysenter_past_esp+0x52/0x71
Apr 12 12:56:20 vs014 kernel:
Apr 12 12:56:20 vs014 kernel: Code: 0f 0b 5d 01 ca bc 36 c0 e9 40 ff ff ff
89 f0 e8 25 40 ff ff
</pre>