c - Not able to set breakpoint on some functions in kgdb setup -

-

itemprop = "text">

I have a qigraphy setup using two virtual machines, both of them are 6.4 percent (in fact the kilo db is the clone of the host target ) I am able to successfully connect to remote target and start debugging. I want to debug a RAID driver, especially raid456.ko. My problem is that I am able to set breakpoints on some functions after loading symbols of this raid456.ko by using the add-signal-file command under gdb, but I am not able to set breakpoints on some functions I am For example, I can set the breakpoint at the ops_run_biofill function, but not on the ops_run_biodrain function. Both are static functions and part of the raid5.c file. If I try to set a breakpoint on ops_run_biodrain, it shows:

(gdb) b ops_run_biodrain

The function "ops_run_biodrain" is not set to suspend the breakpoint on the shared library load in the future Do you? (Y or [n])

Why some functions can be debugged and why not something else?

[edit] -------------- ------- I examined the problem further and I came to know that we use NM utility You can find the name and virtual address of any symbol part of a specific object file. I tried nm at raid456.ko and found that the ops_run_biofill function is in the output of nm command, but ops_run_biodrain is not in the output. Does this mean ops_run_biodrain is not in raid456.ko? If so, why is not it part of raid456.ko? Ops_run_biodrain is not under any macro checks.

Given the problem, due to the compilation optimization, some symbols were not being detected. After disabling the optimization of the RAID driver, KGDB can detect those symbols and be able to set a breakpoint on them.

Comments

Post a Comment

Popular posts from this blog

Pass DB Connection parameters to a Kettle a.k.a PDI table Input step dynamically from Excel -

-
Image
I have a requirement whenever I run my own kettle, dynamically took database connection parameters from an excel source Every run should go. I have an Excel column names: hostname, username, database, password. I want to pass these connection parameters to my table input stage dynamically whenever it runs the job. This is what I was trying to do. You can get it Connection parameters from the DB reading source (for example Excel or a CSV file in my example) < / Li> Store the parameters in the variable Using the variable in your connection's settings. Setting Variables Create another conversion for (you can not do it in the same conversion Uses): set variables element variable: The element that reads / writes your data creates a new connection and sets the connection parameter using $ {variable name_} Note that you will need to type in the field field in the field $ {password} Also keep in mind that this can be a security problem as the
Read more

multithreading - PhantomJS-Node in a for Loop -

-
I am trying to implement a screen-scraps application that opens a URL in which a parameter changes as it is for a loop: var data = [ '100', '101', '102', '103', '104']; (Var indexA = 0; indexA & lt; data.length; indexA ++) for {Phantom Generation ({'port': freeport}, function (pH) {ph.create page (function (page) {page.open ("http: //...++ data [index B] +" ... " , Status {console.log ("open site:" + data [index B], position); / * OLD * / indexB ++; page evaluation (function () {// page scrape and an object Return}, function {console.log (result.dataRequest); // here is the problem}); / * new and fixed * / indexB ++} first console Logs it: Open Site: 100 Success Opens Site: 101 Success B Ola Site: 102 Success Opening Site: 103 Success Opened Site: 104 Success Which is good. Data is verified in scrap HTML and from index to array Matches. So in page 101 I scrap '101 and retrieve' and pu
Read more

c++ - MATLAB .m file to .mex file using Matlab Compiler -

-
I know that it can speak as a very famous topic, but something that helps me with it Not found This scenario is: I have my functions function, no matter what's inside, it's a generic function that may depend on other toolboxes. Does. Has input and output; I want to generate the same myFun.mex function; : Lib myFun This way I get some new files: libmyfun.c libmyfun.dll Libmyfun.exp libmyfun.exports libmyfun .h libmyfun.lib Reading around and I think that Creating a myfun.cpp that is very famous is included: / * gateway function * / zero max function (ent NLHS, MXARRA * PLS [], int NRHS, CONST M Xeray * PHS []) Here is the Variable Deals * / / * code here * /} I have tried to do this and are called Regular of Max Generation: Max ('- v', 'myfun.cpp') But I get many errors, and I should say that my myfun.cpp copy / Paste Function is where I have a lot of doubts ... especially on input / output management. My q
Read more