Format of an 'oops' call trace (in show_trace)

[Amir Hermelin]

Hi,
Can someone please point me to a description of what I see in the Call of
the oops dump?  I tried looking into show_trace and lookup_symbol functions,
but I couldn't understand some things.  For example, in this following
trace:
Oct  7 17:13:54 joji kernel: [<e01bae00>] reqrdata [mymod] 0x0 (0xd5543fb4))

Oct  7 17:13:54 joji kernel: [<e01a5220>] mymod [mymod] 0x0 (0xd5543fe0)) 
I don't understand the relevance to reqrdata (since it's not a function, but
a data structure, and isn't the parameter to the mymod function).  And could
someone please explain what the 0x0 in the lines mean? From the code I
understood it to be the offset of the symbol within the module, but that
can't be right if both symbols translate to the same offset - so I must've
understood it wrong.

Thanks for any help,
Amir.


Oct  7 17:13:54 joji kernel:  printing eip:
Oct  7 17:13:54 joji kernel: e01b090b
Oct  7 17:13:54 joji kernel: *pde = 00000000
Oct  7 17:13:54 joji kernel: Oops: 0002
Oct  7 17:13:54 joji kernel: nfsd nfs lockd sunrpc bcm5700 parport_pc lp
parport autofs sg sr_mod ide-scsi scsi_mod ide-cd cdrom key mymod bdev
mousedev hid input usb-uhci ehci-hcd usbcore ext3 
Oct  7 17:13:54 joji kernel: CPU:    0
Oct  7 17:13:54 joji kernel: EIP:    0060:[<e01b090b>]    Not tainted
Oct  7 17:13:54 joji kernel: EFLAGS: 00010282
Oct  7 17:13:54 joji kernel: 
Oct  7 17:13:54 joji kernel: EIP is at rtp_recv [mymod] 0x5b
(2.4.20-8custom)
Oct  7 17:13:54 joji kernel: eax: 00000000   ebx: d5542000   ecx: 00000001
edx: c0374c88
Oct  7 17:13:54 joji kernel: esi: e01bae00   edi: d76aa400   ebp: d5543fcc
esp: d5543f98
Oct  7 17:13:54 joji kernel: ds: 0068   es: 0068   ss: 0068
Oct  7 17:13:54 joji kernel: Process mymod (pid: 6978, stackpage=d5543000) 
Oct  7 17:13:54 joji kernel: Stack: e01bae00 d76aa400 d5542000 00000000
d76aa400 ffffffff e01a5308 e01bae00 
Oct  7 17:13:54 joji kernel:        d76aa400 d5543fcc d5542000 d5542000
dbd15900 00000000 d54f3fd0 d5533fd0 
Oct  7 17:13:54 joji kernel:        d5542000 00000000 e01a5220 00000000
00000000 00000000 c010742d d76aa400 
Oct  7 17:13:54 joji kernel: Call Trace:   [<e01bae00>] reqrdata [mymod] 0x0
(0xd5543f98))
Oct  7 17:13:54 joji kernel: [<e01a5308>] mymod [mymod] 0xe8 (0xd5543fb0)) 
Oct  7 17:13:54 joji kernel: [<e01bae00>] reqrdata [mymod] 0x0 (0xd5543fb4))

Oct  7 17:13:54 joji kernel: [<e01a5220>] mymod [mymod] 0x0 (0xd5543fe0)) 
Oct  7 17:13:54 joji kernel: [<c010742d>] kernel_thread_helper [kernel] 0x5
(0xd5543ff0)) 
Oct  7 17:13:54 joji kernel: 
Oct  7 17:13:54 joji kernel: 
Oct  7 17:13:54 joji kernel: Code: ff 40 1c 8b 56 10 8b 52 1c 89 97 98 01 00
00 01 50 24 89 7c 


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