adapt arm64 dynamic ftrace call with 2 nops

huawei-adapt-arm64-dynamic-ftrace-call-with-2-nops.patch

@@ -0,0 +1,55 @@
+From e8674bab4db104357780db9b960b78938fac5a6d Mon Sep 17 00:00:00 2001
+From: rpm-build <rpm-build>
+Date: Wed, 22 May 2024 20:31:59 +0800
+Subject: [PATCH] huawei adapt arm64 dynamic ftrace call with 2 nops
+
+---
+ kpatch-build/create-diff-object.c | 5 +++++
+ kpatch-build/kpatch-build         | 1 +
+ 2 files changed, 6 insertions(+)
+
+diff --git a/kpatch-build/create-diff-object.c b/kpatch-build/create-diff-object.c
+index 73b8337..f1dfc1d 100644
+--- a/kpatch-build/create-diff-object.c
++++ b/kpatch-build/create-diff-object.c
+@@ -242,6 +242,7 @@ static void kpatch_bundle_symbols(struct kpatch_elf *kelf)
+ 	struct symbol *sym;
+ 	unsigned int expected_offset;
+ 	unsigned int directcall_offset = 16;
++	unsigned int dynamic_ftracecall_offset = 8;
+ 
+ 	list_for_each_entry(sym, &kelf->symbols, list) {
+ 		if (is_bundleable(sym)) {
+@@ -253,6 +254,7 @@ static void kpatch_bundle_symbols(struct kpatch_elf *kelf)
+ 				expected_offset = 0;
+ 
+ 			if (sym->sym.st_value != expected_offset &&
++				!(getenv("CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS") && sym->sym.st_value == dynamic_ftracecall_offset) &&
+ 				!(getenv("CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS") && sym->sym.st_value == directcall_offset)) {
+ 				ERROR("symbol %s at offset %lu within section %s, expected %u",
+ 				      sym->name, sym->sym.st_value,
+@@ -3446,6 +3448,9 @@ static int function_ptr_rela(const struct rela *rela)
+ 	if (getenv("CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS"))
+ 		entry_offset = 16;
+ 
++	if (getenv("CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS"))
++		entry_offset = 8;
++
+ 	return (rela_toc && rela_toc->sym->type == STT_FUNC &&
+ 		!rela_toc->sym->parent &&
+ 		(rela_toc->addend == (int)rela_toc->sym->sym.st_value ||
+diff --git a/kpatch-build/kpatch-build b/kpatch-build/kpatch-build
+index edc05b3..886a753 100755
+--- a/kpatch-build/kpatch-build
++++ b/kpatch-build/kpatch-build
+@@ -1181,6 +1181,7 @@ else
+ fi
+ 
+ grep -q "CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y"    "$CONFIGFILE" && export CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=1
++grep -q "CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS=y"    "$CONFIGFILE" && export CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS=1
+ 
+ # unsupported kernel option checking
+ [[ -n "$CONFIG_DEBUG_INFO_SPLIT" ]] && die "kernel option 'CONFIG_DEBUG_INFO_SPLIT' not supported"
+-- 
+2.33.0
+

kpatch.spec

@@ -1,7 +1,7 @@
 Name:           kpatch
 Epoch:          1
 Version:        0.9.9
-Release:        5
+Release:        6
 Summary:        A Linux dynamic kernel patching infrastructure
 
 License:        GPLv2
@@ -57,6 +57,7 @@ Patch9001:huawei-fix-function-ptr-relocation.patch
 Patch9002:huawei-lookup.c-ignore-BTF-ID-when-matching-locals.patch
 Patch9003:huawei-adapt-kpatch-to-6.6-kernel-and-fix-bundle-symbols-ch.patch
 Patch9004:huawei-fix-function-ptr-relocation-and-strip-.BTF-section-f.patch
+Patch9005:huawei-adapt-arm64-dynamic-ftrace-call-with-2-nops.patch
 
 BuildRequires:  gcc elfutils-libelf-devel kernel-devel git
 %ifarch ppc64le
@@ -120,6 +121,12 @@ popd
 %{_mandir}/man1/*.1.gz
 
 %changelog
+* Wed May 22 2024 caixiaomeng <caixiaomeng2@huawei.com> - 1:0.9.9-6
+- Type: bugfix
+- CVE:NA
+- SUG:NA
+- DESC:adapt arm64 dynamic ftrace call with 2 nops
+
 * Mon May 6 2024 caixiaomeng <caixiaomeng2@huawei.com> - 1:0.9.9-5
 - Type: bugfix
 - CVE:NA