KTRACE man page on Plan9

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KTRACE(1)							     KTRACE(1)

       ktrace - interpret kernel stack dumps

       ktrace [ -i ] kernel pc sp [ link ]

       Ktrace  translates  a  hexadecimal kernel stack dump into a sequence of
       acid(1) commands to show the points in  the  call  trace.   The	kernel
       argument should be the path of the kernel being debugged, and pc and sp
       are the PC and SP values given in the stack dump.   For	MIPS  kernels,
       the contents of the link register must also be supplied.

       A  stack	 trace	consists  of  a ktrace command followed by a series of
       lines containing fields of the form location=contents:
       ktrace /kernel/path 80105bc1 8048e174
       8048e114=80105ac6 8048e120=80140bb4 8048e134=8010031c
       8048e16c=80137e45 8048e170=80105bc1 8048e178=80137e62

       The trace can be edited to provide the correct  kernel  path  and  then
       pasted  into  a	shell  window.	 If  the  -i option is present, ktrace
       instead prompts for the contents of the memory locations in which it is
       interested;  this  is useful when the stack trace is on a screen rather
       than in a machine readable form.


       acid(1), rdbfs(4)

       When examining a kernel trace resulting from an	interrupt  on  top  of
       other interrupts, only the topmost call trace is printed.

                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
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