------- Comment From i...@de.ibm.com 2021-02-17 11:51 EDT------- Here is the original complaint: https://lore.kernel.org/bpf/20200611205040.GA1853644@krava/
If you build the kernel with CONFIG_DEBUG_INFO_BTF, there is a 50% chance that you will see "Failed verification: in-kernel BTF is malformed" during boot. There was also a hang, reported by one of our kernel team members, that we tracked down to the same issue, but unfortunately I cannot find any details about it right now. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to binutils in Ubuntu. https://bugs.launchpad.net/bugs/1903814 Title: [binutils] Prevent GOT access rewrite for certain symbols Status in Ubuntu on IBM z Systems: Triaged Status in binutils package in Ubuntu: Fix Released Status in binutils source package in Bionic: New Status in binutils package in Debian: New Bug description: [Impact] * In s390 kernel context, this bug manifests itself as random errors and infinite loops. [Test Case] * Needs to be confirmed by IBM * Build-time tests-suite (applied upstream) backported to Bionic in + ld/testsuite/ld-s390/gotreloc-1.s + ld/testsuite/ld-s390/gotreloc-1.ver + ld/testsuite/ld-s390/gotreloc_31-1.dd + ld/testuite/ld-s390/gotreloc_64-1.dd [Where problems could occur] * Binutils is a base toolchain package - A problem could potentially affect the whole system - With compiler/linker errors - Or random errors in the produced binaries * This patch touches only architecture specific code in bfd/elf64-s390.c - It would only affect the s390x architecture in this case [Other Info] * While testing the fix in Bileto, we found one pending autopkgtest regression with linux/amd64 4.15.0-135.139 which is resolved in 4.15.0-136.140 (currently in -proposed). == Original Description == Please backport the following bugfix into Ubuntu LTS: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=e6213e09ed0e Some relevant historic links: Debian bugreport: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961736 glibc bugreport: https://sourceware.org/bugzilla/show_bug.cgi?id=18960 In s390 kernel context, this bug manifests itself as random errors and infinite loops, so it's fairly severe. These are the current versions of binutils: Package binutils xenial (16.04LTS) (devel): GNU assembler, linker and binary utilities 2.26.1-1ubuntu1~16.04.8 [security]: amd64 i386 2.26-8ubuntu2 [ports]: arm64 armhf powerpc ppc64el s390x xenial-updates (devel): GNU assembler, linker and binary utilities 2.26.1-1ubuntu1~16.04.8: amd64 arm64 armhf i386 powerpc ppc64el s390x bionic (18.04LTS) (devel): GNU assembler, linker and binary utilities 2.30-21ubuntu1~18.04.4 [security]: amd64 i386 2.30-15ubuntu1 [ports]: arm64 armhf ppc64el s390x bionic-updates (devel): GNU assembler, linker and binary utilities 2.30-21ubuntu1~18.04.4: amd64 arm64 armhf i386 ppc64el s390x focal (20.04LTS) (devel): GNU assembler, linker and binary utilities 2.34-6ubuntu1: amd64 arm64 armhf i386 ppc64el s390x groovy (devel): GNU assembler, linker and binary utilities 2.35.1-1ubuntu1: amd64 arm64 armhf i386 ppc64el s390x The patch applies fine to 2.26 and 2.30 (except for tests, but we don't need them). We don't need it on 2.32+. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1903814/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
