I am using multiple PHANToMs on a 2.4.4-rtl kernel and rtlinux 3.1.
By using lots of threads and slightly changing kabi's module source I
have got them working together satisfactorally.
However there seems to be some memory leak in the system which seems
to be linked to either the module or my programs.
I get errors such as:
Unable to handle kernel paging request at virtual address c997f280
printing eip:
c997f280
*pde = 018b9067
*pte = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[scsi_mod:proc_scsi_R79a04975+85235276/72222440]
EIP: 0010:[<c997f280>]
EFLAGS: 00010282
eax: c047cedc ebx: c2cbceb4 ecx: c0478000 edx: c997f280
esi: c116bf74 edi: c116a558 ebp: c116a000 esp: c116bf6c
ds: 0018 es: 0018 ss: 0018
Process keventd (pid: 2, stackpage=c116b000)
Stack: c011509a c0478000 c047cedc c2cbceb4 00000296 00000000 00000000
c011c0a1
c0210e20 0000000a c116a550 c116a560 c116bfd0 c02525d8 00000001
c0114d4b
c0114d59 00000001 00000000 00000000 00010000 00000000 00000700
c011bf80
Call Trace: [__run_task_queue+90/112] [context_thread+289/432]
[do_softirq+91/128] [do_softirq+105/128] [context_thread+0/432]
[init+0/320] [kernel_thread+38/48]
Call Trace: [<c011509a>] [<c011c0a1>] [<c0114d4b>] [<c0114d59>]
[<c011bf80>] [<c0105000>] [<c01054d6>]
[context_thread+0/432]
[<c011bf80>]
Code: Bad EIP value.
Now if the computer starts these types of crashes and is not rebooted
then certain programs will stop working producing different crashes
but still the same type at the same address, although this address
will change after rebooting.
Is this a memory leak? If it isn't, what is it? The process shown
crashing here is keventd which is normally the most likely although
others have crashed as well. Normally make, ls, grep, and anything
that uses lots of memory.
I am going to try to debug this by getting my programs to log every
variable they create and search these logs on crashes, and probably do
a similar thing with the module and use printk.
Would people recommend this or a different approach?
Finally, I'd like to mention the people of New York, in what must be a
difficult time for them. My thoughts go out.
Stephen
--
Cybernetics Department
University of Reading, UK
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