debug 问题

Posted 2020-12-11 guohaoyu110

If you are getting this in gdb on macOS while trying to run a program:

Unable to find Mach task port for process-id 57573: (os/kern) failure (0x5).
 (please check gdb is codesigned - see taskgated(8))

1. Open Keychain Access
2. In menu, open Keychain Access > Certificate Assistant > Create a certificate
3. Give it a name (e.g. gdbc)

• Identity type: Self Signed Root
• Certificate type: Code Signing
• Check: let me override defaults

4. Continue until "specify a location for..."
5. Set Keychain location to System
6. Create certificate and close Certificate Assistant.
7. Find certificate in System keychain.
8. Double click certificate
9. Expand Trust, set Code signing to always trust
10. Restart taskgated in terminal: killall taskgated
11. Codesign gdb using your certificate: codesign -fs gdbc /usr/local/bin/gdb
12. Shut down your mac and restart in recovery mode (hold down command-R until apple logo appears)
13. Open terminal window
14. Modify System Integrity Protection to allow debugging: csrutil enable --without debug
15. Reboot your Mac. Debugging with gdb should now work as expected.