Message ID | 20230321-kexec_clang16-v6-1-a2255e81ab45@chromium.org (mailing list archive) |
---|---|
State | Superseded, archived |
Headers | show |
Series | kexec: Fix kexec_file_load for llvm16 with PGO | expand |
Context | Check | Description |
---|---|---|
conchuod/cover_letter | success | Series has a cover letter |
conchuod/tree_selection | success | Guessed tree name to be fixes at HEAD 1b50f956c8fe |
conchuod/fixes_present | success | Fixes tag present in non-next series |
conchuod/maintainers_pattern | success | MAINTAINERS pattern errors before the patch: 1 and now 1 |
conchuod/verify_signedoff | success | Signed-off-by tag matches author and committer |
conchuod/kdoc | success | Errors and warnings before: 0 this patch: 0 |
conchuod/build_rv64_clang_allmodconfig | success | Errors and warnings before: 18 this patch: 18 |
conchuod/module_param | success | Was 0 now: 0 |
conchuod/build_rv64_gcc_allmodconfig | success | Errors and warnings before: 18 this patch: 18 |
conchuod/build_rv32_defconfig | success | Build OK |
conchuod/dtb_warn_rv64 | success | Errors and warnings before: 3 this patch: 3 |
conchuod/header_inline | success | No static functions without inline keyword in header files |
conchuod/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 23 lines checked |
conchuod/source_inline | success | Was 0 now: 0 |
conchuod/build_rv64_nommu_k210_defconfig | success | Build OK |
conchuod/verify_fixes | success | Fixes tag looks correct |
conchuod/build_rv64_nommu_virt_defconfig | success | Build OK |
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index f989f5f1933b..69ee4a29136f 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -901,10 +901,22 @@ static int kexec_purgatory_setup_sechdrs(struct purgatory_info *pi, } offset = ALIGN(offset, align); + + /* + * Check if the segment contains the entry point, if so, + * calculate the value of image->start based on it. + * If the compiler has produced more than one .text section + * (Eg: .text.hot), they are generally after the main .text + * section, and they shall not be used to calculate + * image->start. So do not re-calculate image->start if it + * is not set to the initial value, and warn the user so they + * have a chance to fix their purgatory's linker script. + */ if (sechdrs[i].sh_flags & SHF_EXECINSTR && pi->ehdr->e_entry >= sechdrs[i].sh_addr && pi->ehdr->e_entry < (sechdrs[i].sh_addr - + sechdrs[i].sh_size)) { + + sechdrs[i].sh_size) && + !WARN_ON(kbuf->image->start != pi->ehdr->e_entry)) { kbuf->image->start -= sechdrs[i].sh_addr; kbuf->image->start += kbuf->mem + offset; }