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https://github.com/dynup/kpatch
synced 2025-03-24 20:06:47 +00:00
dea77c42dc
Normally, kpatch doesn't complain if you remove or rename a function. This is a feature, because sometimes you have to rename a function in order to patch it, if for example it doesn't have an fentry call. In the object code, it's treated as a new function. You could get the same result by copying/pasting the original function and giving the copy a new name. But renaming it makes it much easier to review the patch. In RHEL 7.4, I tried to rename l2cap_config_rsp() to l2cap_config_rsp_kpatch(), but it failed with: ERROR: l2cap_core.o: reference to static local variable CSWTCH.347 in l2cap_config_rsp was removed This particular error is an easy fix, because the CSWTCH.* symbols are read-only and are created by GCC. So they shouldn't be correlated anyway. In the future, we will need a more general fix to allow the removal of functions which use *any* static local variables. Either automatically, or by adding a manual annotation. This can be handled when we rewrite the static local variable handling in #545. |
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| .. | ||
| insn | ||
| create-diff-object.c | ||
| create-klp-module.c | ||
| create-kpatch-module.c | ||
| kpatch-build | ||
| kpatch-elf.c | ||
| kpatch-elf.h | ||
| kpatch-gcc | ||
| kpatch-intermediate.h | ||
| list.h | ||
| log.h | ||
| lookup.c | ||
| lookup.h | ||
| Makefile | ||