My IT projects

Last week I was using cuda and after an hour trying to debug my code I decided to see if cuda had something similar to gdb  and I came across cuda-gdb . Happy,  I opened my terminal and typed in a simple command to debug my small cuda application, unfortunately, I directly received an error message similar to this :

Starting program: /x/y/foo Unable to find Mach task port for process-id 285: (os/kern) failure (0x5). (please check cuda-gdb is codesigned - see taskgated(8))

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Starting program: /x/y/foo Unable to find Mach task port for process-id 285: (os/kern) failure (0x5). (please check cuda-gdb is codesigned - see taskgated(8))

After a minute staring at my screen, I recalled a skype-talk with a friend telling me that  last time  created a certificate to allow cuda-gdb !  and there I was, wondering how to create a certificate. The reason for this is that the Darwin kernel do not allow gdb or cuda-gdb to debug other processes if it does not have special rights, since debugging a process might allow a hacker to take control over it.  So I used this method :

Step 1:

Open “Keychain Access”  via

Or via spotlight

Step2:

• Click on the “Keychain Access” menu  in the left corner of your screen  :
• Select “Certificate Assistant“.
• Click on “Create a Certificate“.

Step 3:

• Set the “Identity Type” to “Self Signed Root”.
• Set “Certificate Type” to “Code Signing”.
• Finally select “Let me override defaults”

• Click on “Create”.

Step 4:

• Click on “Continue” a few times until you seing the following window :

• Change the “Keychain” to “System”.
• Click on “Create“

Step 5:

• Find the certificate and right click on it .

• Select “Get Info”.
• Open the “Trust” item and modify “Code Signing” to “Always Trust”.