https://lore.kernel.org/all/20181207183931.4285-8-kristina.martse...@arm.com/ introduced hwcaps PACA (for address authentication) and PACG (for generic authentication). These are present in /proc/cpuinfo:
Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp uscat ilrcpc flagm paca pacg -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/2012509 Title: unable to fetch pauth registers: Invalid argument. Status in gdb package in Ubuntu: New Bug description: I am running Ubuntu Lunar on an arm64 Lenovo X13s using the kernel 6.2.0-1003-laptop from ppa:ubuntu-concept/x13s. The kernel is configured with CONFIG_ARM64_PTR_AUTH=y. Debugging a trivial hello world program fails: GNU gdb (Ubuntu 13.1-2ubuntu2) 13.1 Reading symbols from ./test... (gdb) r Starting program: /home/user/temp/test unable to fetch pauth registers: Invalid argument. The message relates to this statement: gdb/aarch64-linux-nat.c:371: ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_PAC_MASK, &iovec); When using set tdesc filename target.xml with a target.xml file without the org.gnu.gdb.aarch64.pauth feature debugging works fine. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/2012509/+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
