This bug is awaiting verification that the linux-azure/5.15.0-1038.45 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1639924 Title: Kernel livepatch support for for s390x Status in Ubuntu on IBM z Systems: Fix Released Status in gcc-11 package in Ubuntu: Fix Released Status in kpatch package in Ubuntu: Fix Released Status in linux package in Ubuntu: Fix Released Status in gcc-11 source package in Jammy: Fix Released Status in kpatch source package in Jammy: Invalid Status in linux source package in Jammy: Fix Released Status in gcc-11 source package in Kinetic: Fix Released Status in kpatch source package in Kinetic: Invalid Status in linux source package in Kinetic: Fix Released Bug description: [ Impact ] * kpatch upstream has gained support for more architectures which we would like to enable on LTS release. Since building livepatches using the kpatch tooling makes the most sense on LTS kernels. * This SRU is to enable s390x builds of kpatch on kinetic & jammy. * Separately linux kernel patches for s390x will also be backported to the GA kernel, whilst hwe-5.19 kernel already has all bugfixes to support livepatches. [ Test Plan ] * Attempt to run and load sample integration livepatches from the kpatch integration source code, against v5.15 & v5.19 kernels. These should succeed on: - amd64 jammy v5.15 - amd64 & s390x jammy v5.19 - amd64 & s390x kinetic v5.19 [ Where problems could occur ] * The newly generated livepatches produced by this kpatch may have different content (more or less sections/sybmols/relocations/etc), but remain compatible with all prior kernels and tool-chains. * This is a fairly large upstream update to the tooling. * One command line option to kpatch-build is no longer supported '-e', instead long form command line option must be used '--oot- module'. And '--ott-module-src' becomes mandatory in such cases, previously '--sourcedire' was required. Additional command line options added '--oot-module-src, -R|--non- replace'. '--skip-gcc-check' is still supported but prints warnings, it is deprecated in favour of '--skip-compiler-check'. kpatch-cc utility is added, which is a toolchain wrapper. Thus adjustments might be needed to scripts used to invoke and create kpatch modules. * Majority of non-test/non-doc changes are to do with: - add support for s390x and 32bit powerpc - add support for newer kernels and compilers (support & bugfixes to various sections and symbols) - more strict checking and bugfixes w.r.t. livepatch generation - refactoring and better build support for cross-compiled modules, compilation for various linux distributions, and code cleanups. * Some of the fixes from these new upstream releases have already been cherry-picked in the kpatch, but others might soon be needed on x84, i.e. to support gcc-12 built kernels. $ git log --no-merges --oneline v0.8.0..v0.9.7 -- kmod/ kpatch- build/ > shortlog.txt d46fea98ef kpatch-build: strengthen conditions for changed sections 9fac261ed0 kpatch-build: rela section could disappear after patched fe45029b4d kpatch-build: fix KBUILD_MODNAME for OOT modules 8cc0fedefb kpatch-build: use err.h instead of error.h for musl support 07433e98c0 kpatch-cc: fix stripping of source tree prefix 33368a88cd create-diff-object: add support for .return_sites section (x86) e921c557f9 macros: tweak syscall patching macros a1171b112e create-diff-object: Create missing section symbol 0308d52bcd kpatch/s390: Enable kpatch build support b0330ab18e kpatch/s390: Add additional bundled symbols. eb4a85f778 kpatch/s390: Add exclusion lists f0d00a9290 kpatch/s390: Add initial support for kpatch 10002f5aa6 kpatch/s390: Add gcc prerequisite flags for kpatch c6d0b5450b lookup: fix symtab parsing 52863dace0 create-diff-object: fix endianness in kpatch_no_sibling_calls_ppc64le() 017015a725 create-diff-object: make kpatch_check_relocations() more precise f0e3da336c create-diff-object: fix string extraction 86d5208b46 create-diff-object: error on symbol conversion failure 325bccd89d create-diff-object: skip conversion for sections which never have symbols 8508abd3b1 create-diff-object: allow converstion of empty symbols 8d5a628bde create-diff-object: add extra check for symbol conversion edge case 01427d50a1 create-diff-object: move addend math to a new function bec6488af6 create-diff-object: add rela_insn() error check 6b1895a6b7 create-diff-object: convert rela_insn() to take normal 'sec' bf212f7750 create-diff-object: error on unsupported rela in symbol conversion 3f8e1062cc create-diff-object: support R_X86_64_NONE in kpatch_replace_sections_syms() 79f45d1b0a create-diff-object: fix kpatch_replace_sections_syms() for non-text 61e46094b5 create-diff-object: convert function return types to 'bool' c24d135f40 create-diff-object: rename "sec" -> "relasec" for rela sections 3b63456817 kpatch-elf: convert functions to static 0c5a1e7753 kpatch-build: make xtrace output less verbose 2784f5056b kpatch-build: add support for openEuler 3392049665 kpatch-build: remove duplicated use_klp_arch e9c0b67862 macros: add syscall patching macros c2e73c2cbc create-diff-object: ensure debug sections don't use dynrelas 305ff8a5d8 create-diff-object: include .LCx string literal symbols b700732f5d create-diff-object: add "_printk" to the __LINE__ detection 79fd60b28d create-diff-object: check arg2 and arg3 on all arches for line detection f7b27f2fec kpatch-build: Increase name length limit to 55 chars e6b1664d0e create-diff-object.c: add s390 support for __LINE__ detection a6920b9381 create-diff-object: fix endian issues in insn_is_load_immediate() 1152e58244 create-diff-object: support __LINE__ detection for btrfs macros fea0192104 kpatch-build: Allow setting kernel version if --sourcedir and --vmlinux are used af672577b3 create-diff-object: use toc_rela() in kpatch_line_macro_change_only() 81296117f4 create-diff-object: unify kpatch_line_macro_change_only() 4ba6f1fbc9 create-diff-object: include __dyndbg section when referenced by jump table 8d81cc8517 kpatch-elf: symtab_shndx support 4d8c8102de Fix sym->type condition in locals_match() 4c0e4898d9 create-diff-object: detect architecture from input ELF file 394a907a37 create-diff-object: move kpatch_find_func_profiling_calls definition 0decc79d0b kpatch-build: introduce ability to ignore distro-specific checks fd0457b9f3 kpatch-build: add cross-compilation support c4286ee2cb create-diff-object: add support for .retpoline_sites section 9ee9f7a3ec kpatch-build: Add missing allocation failure checks bdc43561e9 kpatch-build: combine find_special_section_data() variants 34fcfd4d56 kpatch-build: source kernel .config instead of grepping 89a871fff9 Fix oot-module builds aa85922ec6 Do not unset KBUILD_EXTRA_SYMBOLS 4a7dab17c8 Allow OOT modules to be built with non-distro kernels 6c4c8c0a2d create-diff-object: update for __already_done f5175a402b kpatch-build: save environment varibles to file 6673c693d6 kmod/patch: clean only rebuildable objs 607ee53e1e livepatch-patch-hook: add comments 4f51ee7fa3 create-diff-object: support ppc64le relative jump labels cb23c601f6 kpatch-build: Handle error in create-klp-module ef0ce9715a create-diff-object: fix use after free in kpatch-check-relocations() 70b8fe8f95 kpatch-build: Do not check KLP_REPLACE for kpatch.ko-based patches eaaced1912 add openEuler build support 99542e864e create-diff-object: rename arguments in most correlate/compare functions 22e16619e0 create-diff-object: base->orig renames e2b50d7b66 create-diff-object: make locals_match() and maybe_discarded_sym() return bool 720768767d Switch to per-file lookup table pointers. db442d1405 Make lookup_symbol() accept struct symbol as an argument 56471ffc7c kpatch-build: Support CONFIG_PRINTK_INDEX, part 2 6cf50a6fca create-diff-object: Support CONFIG_PRINTK_INDEX, part 1 ea0470baa7 create-diff-object: change kpatch_line_macro_change_only() return type to bool a02668a0f7 kmod: remove redundant -mcmodel=large on ppc64le 624e5e3b82 kmod: pass CFLAGS_MODULE to module build 5622e3cc3d Make sure section symbols exist a26b2af2a3 kpatch-build: set EXTRAVERSION and not localversion for RH kernels ba3defa060 create-diff-object: Check that the section has a secsym 17dcebf077 kpatch-build: enable klp with replace option by default d9f49e850a kpatch-build: drop klp.arch support in RHEL-8.4 81f9ca4833 create-diff-object: Fix out-of-range relocation check fa5a95cafd create-diff-object: Fix out-of-range relocation error message 7be75549ba kpatch-build: add support for static calls 6d466fa76f kpatch-build: drop klp.arch support in RHEL-8.4 f9d2ec1d77 kpatch-build: fix kernel_is_rhel() for rhel-8 z-stream kernels 1b5a17f934 create-build-diff: support for .cold functions with no id suffix fc4a56f6b2 kpatch-build: check existance of Makefile.modfinal 4cc2f06279 kpatch-build: workaround pahole and CONFIG_DEBUG_INFO_BTF_MODULES 6c83b642a4 create-diff-object: make digit tail optional in kpatch_mengled_strcmp b6e1d071ff create-diff-object: consider '.L' symbols not static local fddc6242c6 create-diff-object: support both gcc and clang style of static variables 38c2d7315d create-diff-object: clang __UNIQUE_ID symbol support 488f30c31b create-diff-object: .L.str* symbols support 41de9e763a kpatch-build: clang support f951c1a92e kpatch-build: apply 'cp -f ... || die' pattern e25450f5a8 kpatch-build: workaround pahole and CONFIG_DEBUG_INFO_BTF 387914b683 kpatch-gcc: powerpc - skip vdso files 04021bbfd5 kmod/patch: add kpatch.lds as a dependency for $(KPATCH_NAME).o b8d4611edb kmod: convert __section to __kpatch_section aea2cb96d6 create-diff-object: fix __dyndbg section inclusion ef420050e3 kpatch-elf: pass new ELF output file mode to kpatch_write_output_elf() 25f12681fa create-diff-object: cleanup maybe-uninitialized compiler complaints 08056febfd kpatch-build: Check Final module symbols for loadability e9600c5513 kpatch-build: Check exported symbol version changes b4c2753684 kpatch-build: Create module symbol version file once b311112702 deal with the deadlock may occur in stop_machine context. 6531a7e075 kpatch-build: avoid modpost .output.o.cmd complaints ea647e50ae kpatch-build/Makefile: Fail build on unsupported architectures 17ec03ef95 Keep build.log on --skip-cleanup ed849a9b3e create-diff-object: Ignore changes to .altinstr_aux abd2ff81c7 create-diff-object: change rela_equal() to return bool 514acc32e9 create-diff-object: improve jump label warnings b381a0cc0b lookup: Add __UNIQUE_ID_ to maybe_discarded_sym list 67aa131137 gcc-plugin: GCC 10 - update local/non local insn names 92c42039bf gcc-plugin: abort building klp module on error fde1a75b7f gcc-plugin: Fix build failure with GCC 10 b958ed601c create-diff-object: Add ppc64le mcount support 9bb75659e2 kpatch-build: Detect R_X86_64_64 dynrelas with large addends 15067fcd64 kmod/core: apply dynrela addend for R_X86_64_64 c1caee1468 create-diff-object: Ignore kpatch_ignored functions/sections missing ftrace hook 1991ff0018 create-diff-object: add support for .klp.arch removal 3982b329bc kpatch-build: drop support for old non-.klp.arch kernels e80562a8cb kpatch-build: add kpatch.ko deprecation warning d97de8d554 kpatch-build: readability cleanups 4e0db559c1 lookup: fix Module.symvers reading for newer kernels 89e8574027 create-diff-object: show all jump labels before reporting failure 0a3e6c5f42 create-diff-object: refactor dynrela conversion d2089a4d72 create-diff-object: rename lookup 'result' -> 'symbol' ae9f1c17b1 lookup: add duplicate symbol checks 3064cf3c60 lookup: add 'objname' to lookup table and lookup results 7e1f2b0e07 lookup: convert lookup functions to return bool 6cc03f9599 lookup: rename 'pos' to 'sympos' cd121422d9 lookup: rename 'value' -> 'addr' 5fad6599a4 lookup: remove unused testing code e4d37dad5d lookup: Skip .dynsym table in symtab_read() 7e48138185 lookup: Simplify first loop in symtab_read() 74c9c99931 create-diff-object: reduce indentation in kpatch_create_patches_sections() b548ba153f kpatch-build: Look for local static variables in child functions 42128ff78c kpatch-build: Include .part. symbols as child function b502e5b1cc kpatch-build: Allow function to have multiple child functions af1fe267c5 create-diff-object: Avoid unnecessary parent symbol inclusion fbfc8f9bec create-diff-object: Handle ppc64le toc with only constants 687e2caabc create-diff-object: Don't strip callback section symbols 37e950a653 create-kpatch-module: Fix -Wconversion warnings ea9e708df0 create-klp-module: Fix -Wconversion warnings f67c2ebce0 kpatch-elf: Fix -Wconversion warnings 5f68db22e5 create-diff-object: Fix -Wconversion warnings a0c608de70 kpatch-build/Makefile: Skip build insn/plugin with -Wconversion 4e4a8d99da kpatch-build: add -Wconversion/-Wno-sign-conversion CFLAGS f5f5479614 create-diff-object: fix relocations used for ZERO_PAGE(0) 61c55d9e52 kpatch-build: replace all '-' to '_' in KOBJFILE_NAME 68530e4c2b kpatch-build: Make local static twining stricter 19baa5b7c7 create-diff-object: process debug sections last 852bad5e8d create-diff-object: Use new helpers for static local correlation e49e3a59c2 create-diff-object: Rename elements getting correlated 49a9adaf74 create-diff-object: Correlate objects related to a section at once 770f529225 kpatch-elf: Ensure stale references are not used 3a1a73f08c Make symvers reading code more flexible. a02842fb69 kpatch-elf: Free sections in elf teardown 935f199875 create-diff-object: simplify mangled function correlation e9755413ed kpatch-build: use whole word filename matching in find_parent_obj() 878bac379f create-diff-object: Simplify relocation processing bd4fae25f9 create-diff-object: Add const to unmodified rela_insn arguments 50476c94cc create-diff-object: Check ELF headers earlier 2499eb2bdc Revert "create-diff-object: Check for *_fixup sections changes" aabdf9c9c9 Fix parent matches for kernels newer than 5.3 ed5091b16f kpatch-build: Check if /etc/os-release exists e4525ce311 kpatch-build: sanity check patched filenames 36120b9b08 kmod/patch: check for RHEL8 when setting HAVE_SIMPLE_ENABLE e187de3fe4 kpatch-build: update core file error message * This will be a potentially disruptive SRU, however it is required to introduce building livepatches for the LTS v5.15 GA kernel on s390x, and to continue support building kpatches on an LTS release for the hwe based kernels. Kinetic update is required to not regress support for kpatch building upon upgrades (even though that's not provided by canonical). [ Other Info ] * Anything else you think is useful to include * Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board * and address these questions in advance To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1639924/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
