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nokaslr, thanks to @dakami at close #12

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Ciro Santilli
2018-02-01 20:20:35 +00:00
parent 7bd1508c98
commit c052a83205
3 changed files with 28 additions and 24 deletions
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gdb-step-debugging.md
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@@ -34,7 +34,10 @@ which counts to infinity to stdout, and then in GDB:
And you now control the counting from GDB.
See also: <http://stackoverflow.com/questions/11408041/how-to-debug-the-linux-kernel-with-gdb-and-qemu>
See also:
- <http://stackoverflow.com/questions/11408041/how-to-debug-the-linux-kernel-with-gdb-and-qemu/33203642#33203642>
- <http://stackoverflow.com/questions/4943857/linux-kernel-live-debugging-how-its-done-and-what-tools-are-used/42316607#42316607>
`O=0` is an impossible dream, `O=2` being the default: <https://stackoverflow.com/questions/29151235/how-to-de-optimize-the-linux-kernel-to-and-compile-it-with-o0> So get ready for some weird jumps, and `<value optimized out>` fun. Why, Linux, why.
@@ -73,6 +76,8 @@ Just don't forget to remove your breakpoints after `rmmod`, or they will point t
TODO: why does `break work_func` for `insmod kthread.ko` not break the first time I `insmod`, but breaks the second time?
See also: <http://stackoverflow.com/questions/28607538/how-to-debug-linux-kernel-modules-with-qemu/44095831#44095831>
### Bypassing lx-symbols
Useless, but a good way to show how hardcore you are. From inside QEMU: