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https://github.com/dynup/kpatch
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19b0aba672
It was observed by Evgenii Shatokhin in PR#755, that when the RCU callback was called on the patched function, from unloaded livepatch module triggered a kernel crash. This patch implements the approach on PowerPC outlined in PR#755. With -mcmodel=large, like any other data, function pointers are also loaded relative to the current TOC base and are populated as relocation entries in .toc section. Every function passing a function pointer as the argument need to load the function address through .toc section + offset. Convert such .toc + offset relocation into a dynamic rela, which resolves to original function address, during module load. Also move the comment related to nested function check, into may_need_dynrela(). Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Evgenii Shatokhin <eshatokhin@virtuozzo.com> Cc: Joe Lawrence <jdl1291@gmail.com> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> |
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| .. | ||
| gcc-plugins | ||
| 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 | ||