subtree updates

poky: ddb298ce89..fc25449687:
  Alex Kiernan (1):
        rust: Upgrade 1.68.1 -> 1.68.2

  Alexander Kanavin (5):
        selftest/distrodata: clean up exception lists in recipe maintainers test
        dhcpcd: use git instead of tarballs
        perl: patch out build paths from native binaries
        libgcrypt: update 1.10.1 -> 1.10.2
        rpm: update 4.18.0 -> 4.18.1

  Andrew Jeffery (1):
        Revert "ipk: Decode byte data to string in manifest handling"

  Archana Polampalli (1):
        git: ignore CVE-2023-25815

  Arslan Ahmad (1):
        kernel-fitimage: Fix the default dtb config check

  Bruce Ashfield (9):
        kernel: improve initramfs bundle processing time
        yocto-bsps: update to v5.15.106
        linux-yocto/5.15: update to v5.15.109
        linux-yocto/5.15: update to v5.15.110
        linux-yocto/5.15: update to v5.15.111
        linux-yocto/5.15: update to v5.15.112
        linux-yocto/5.15: update to v5.15.113
        kernel: don't force PAHOLE=false
        linux-yocto: move build / debug dependencies to .inc

  Chen Qi (1):
        staging.bbclass: do not add extend_recipe_sysroot to prefuncs of prepare_recipe_sysroot

  Chi Xu (1):
        expect: Add ptest support

  Daniel Ammann (1):
        overview-manual: concepts.rst: Fix a typo

  Deepthi Hemraj (1):
        binutils: stable 2.40 branch updates

  Denys Dmytriyenko (1):
        xz: upgrade 5.4.2 -> 5.4.3

  Dmitry Baryshkov (1):
        linux-firmware: upgrade 20230210 -> 20230404

  Eero Aaltonen (1):
        avahi: fix D-Bus introspection

  Enrico Jörns (1):
        package_manager/ipk: fix config path generation in _create_custom_config()

  Jan Vermaete (1):
        cve-update-nvd2-native: added the missing http import

  Joe Slater (1):
        ghostscript: fix CVE-2023-28879

  Johannes Schrimpf (1):
        python3targetconfig.bbclass: Extend PYTHONPATH instead of overwriting

  Kai Kang (1):
        libnotify: remove dependency dbus

  Khem Raj (10):
        cargo: Fix build on musl/riscv
        gawk: Disable known ptest fails on musl
        gawk: Remove redundant patch
        gawk: Add skipped.txt to emit test to ignore
        libxml2: Disable icu tests on musl
        quilt: Fix merge.test race condition
        piglit: Fix c++11-narrowing warnings in tests
        cpio: Run ptests under ptest user
        go: Upgrade 1.20.1 -> 1.20.4
        go: Use -no-pie to build target cgo

  Lee Chee Yang (3):
        release-notes-4.2: update known issues and Repositories/Downloads
        migration-guides: add release-notes for 4.1.4
        migration-guides: add release notes for 4.2.1

  Lorenzo Arena (1):
        conf: add nice level to the hash config ignred variables

  Luca Ceresoli (2):
        ref-manual: classes: kernel: remove incorrect sentence opening
        ref-manual: classes: kernel: document automatic defconfig usage

  Markus Volk (1):
        gtk4: update 4.10.0 -> 4.10.3

  Martin Jansa (7):
        populate_sdk_ext.bbclass: set METADATA_REVISION with an DISTRO override
        populate_sdk_ext.bbclass: redirect stderr to stdout so that both end in LOGFILE
        populate_sdk_base.bbclass: respect MLPREFIX for ptest-pkgs's ptest-runner
        binutils: package static libs from gprofng
        go.bbclass: don't use test to check output from ls
        image-live.bbclass: respect IMAGE_MACHINE_SUFFIX
        rpm: drop unused 0001-Rip-out-partial-support-for-unused-MD2-and-RIPEMD160.patch

  Martin Siegumfeldt (1):
        systemd-systemctl: fix instance template WantedBy symlink construction

  Michael Halstead (2):
        uninative: Upgrade to 3.10 to support gcc 13
        uninative: Upgrade to 4.0 to include latest gcc 13.1.1

  Michael Opdenacker (2):
        migration-guides: release-notes-4.2: add doc improvement highlights
        releases.svg: fix and explain duration of Hardknott 3.3

  Mikko Rapeli (1):
        qemurunner: avoid leaking server_socket

  Ming Liu (1):
        weston: add xwayland to DEPENDS for PACKAGECONFIG xwayland

  Otavio Salvador (1):
        mesa: 23.0.2 -> 23.0.3

  Pablo Saavedra (1):
        gstreamer1.0: upgrade 1.22.0 -> 1.22.2

  Paul Gortmaker (1):
        scripts: fix buildstats diff/summary hard bound to host python3

  Pavel Zhukov (1):
        lib/terminal.py: Add urxvt terminal

  Pawan Badganchi (1):
        tiff: Add fix for CVE-2022-4645

  Peter Bergin (1):
        update-alternatives.bbclass: fix old override syntax

  Peter Kjellerstedt (3):
        license.bbclass: Include LICENSE in the output when it fails to parse
        musl: Correct SRC_URI
        xf86-video-intel: Use the HTTPS protocol to fetch the Git repositories

  Piotr Łobacz (1):
        libarchive: Enable acls, xattr for native as well as target

  Qiu Tingting (2):
        e2fsprogs: fix ptest bug for second running
        e2fsprogs: Fix error SRCDIR when using usrmerge DISTRO_FEATURES

  Randy MacLeod (1):
        vim: upgrade 9.0.1429 -> 9.0.1527

  Ranjitsinh Rathod (2):
        libbsd: Add correct license for all packages
        kmscube: Correct DEPENDS to avoid overwrite

  Richard Purdie (8):
        qemu: Add fix for powerpc instruction fallback issue
        qemu: Update ppc instruction fix to match revised upstream version
        glib-networking: Add test retry to avoid failures
        glib-networking: Correct glib error handling in test patch
        maintainers.inc: Fix email address typo
        maintainers.inc: Move repo to unassigned
        recipes: Default to https git protocol where possible
        selftest/reproducible: Allow native/cross reuse in test

  Ross Burton (5):
        connman: backport fix for CVE-2023-28488
        cpio: fix appending to archives larger than 2GB
        machine/qemuarm*: don't explicitly set vmalloc
        gdb: fix crashes when debugging threads with Arm Pointer Authentication enabled
        meta: depend on autoconf-archive-native, not autoconf-archive

  Steve Sakoman (3):
        Revert "xserver-xorg: backport fix for CVE-2023-1393"
        poky.conf: bump version for 4.2.1 release
        build-appliance-image: Update to mickledore head revision

  Sudip Mukherjee (4):
        libxfixes: Upgrade to v6.0.1
        xwininfo: upgrade to v1.1.6
        xinput: upgrade to v1.6.4
        libxi: upgrade to v1.8.1

  Thomas Roos (3):
        oeqa/utils/metadata.py: Fix running oe-selftest running with no distro set
        oeqa/selftest/cases/devtool.py: skip all tests require folder a git repo
        oeqa: adding selftest-hello and use it to speed up tests

  Tim Orling (1):
        libmodule-build-perl: upgrade 0.4232 -> 0.4234

  Tom Hochstein (1):
        piglit: Add missing glslang dependencies

  Ulrich Ölmann (1):
        ref-manual: classes.rst: fix typo

  Upgrade Helper (1):
        waffle: upgrade 1.7.0 -> 1.7.2

  Virendra Thakur (1):
        qemu: Whitelist CVE-2023-0664

  Wang Mingyu (18):
        apr: upgrade 1.7.2 -> 1.7.3
        bind: upgrade 9.18.12 -> 9.18.13
        cracklib: upgrade 2.9.10 -> 2.9.11
        libhandy: upgrade 1.8.1 -> 1.8.2
        libpcap: upgrade 1.10.3 -> 1.10.4
        libsdl2: upgrade 2.26.3 -> 2.26.5
        mpg123: upgrade 1.31.2 -> 1.31.3
        man-pages: upgrade 6.03 -> 6.04
        mtools: upgrade 4.0.42 -> 4.0.43
        pango: upgrade 1.50.13 -> 1.50.14
        ruby: upgrade 3.2.1 -> 3.2.2
        texinfo: upgrade 7.0.2 -> 7.0.3
        wpebackend-fdo: upgrade 1.14.0 -> 1.14.2
        xserver-xorg: upgrade 21.1.7 -> 21.1.8
        xwayland: upgrade 22.1.8 -> 23.1.1
        vala: upgrade 0.56.4 -> 0.56.6
        mesa: upgrade 23.0.0 -> 23.0.2
        iso-codes: upgrade 4.13.0 -> 4.15.0

  Xiangyu Chen (1):
        sysstat: Fix CVE-2023-33204

  Yoann Congal (1):
        cve-extra-exclusions: linux-yocto: ignore fixed CVE-2023-1652 & CVE-2023-1829

  Zhixiong Chi (1):
        libpam: Fix the xtests/tst-pam_motd[1|3] failures

  bkylerussell@gmail.com (1):
        kernel-devsrc: depend on python3-core instead of python3

  hen Qi (1):
        unfs3: fix symlink time setting issue

  nikhil (1):
        tiff: Remove unused patch from tiff

meta-raspberrypi: bf948e0aa8..aa0aed9a08:
  Florin Sarbu (1):
        udev-rules-rpi: Use 99-com.rules directly from upstream

  Martin Jansa (3):
        rpi-libcamera-apps: fix flags used in aarch64 builds
        rpi-libcamera-apps: fix version generation on hosts with older python
        rpi-libcamera-apps: bump to latest SRCREV and set PV

meta-openembedded: 2d89a469e5..9286582126:
  Alexander Amelkin (1):
        ipmitool: Update links

  Arsalan H. Awan (1):
        meta-networking/licenses/netperf: remove unused license

  Bartosz Golaszewski (2):
        python3-gpiod: add missing run-time dependencies
        libgpiod: install the libgpiosim header

  Bergin, Peter (1):
        freediameter: fix typo and old overide syntax

  Bhargav Das (2):
        tslib: Add native & nativestdk package support
        pointercal: Add native & nativestdk package support

  Changqing Li (1):
        redis: upgrade 6.2.11 -> 6.2.12

  Chen Qi (1):
        frr: add CVE_PRODUCT

  Jasper Orschulko (1):
        python3-gcovr: Add missing runtime dependency

  Joe Slater (1):
        bats: use baselib

  Khem Raj (48):
        fwupd: Do not emit build time paths into generated headers
        libcereal: Fix TMPDIR leaking into debug_str section
        libtimezonemap: Point to a working SRC_URI
        unixODBC: Update SRC_URI to use updated location of tarball
        unicode-ucd: Update license URI to reflect renamed license
        libx86: Point to working SRC_URI
        ctapi-common: Point to working SRC_URI locations
        netkit-ftp: Update to debian patch 34
        nicstat: Use SOURCEFORGE_MIRROR in SRC_URI
        rp-pppoe: Point SRC_URI to valid location
        ttf-mplus: Point to valid download location for SRC_URI
        ttf-lklug: Point SRC_URI to a working location
        radiusclient-ng: Point SRC_URI to archive.ubuntu.com
        httpfs2: Do not use S during compile/install tasks
        p910nd: Switch to using github for SRC_URI
        mosh: Point SRC_URI to https://mosh.org/
        debootstrap: Update SRC_URI to point to valid URL
        debootstrap: Use DEBIAN_MIRROR for SRC_URI
        ttf-gentium: Switch to debian archive mirror for SRC_URI
        nfacct: Update SRC_URI to point to valid URL
        libencode-perl: Remove buildpaths from generated .exh files
        enca: Remove buildpaths from target scripts
        libirecovery: Add missing build dependency on readline
        fftw: Remove hardcoded sysroot into binaries
        lmdb: Pass CFLAGS to Makefile
        php: Remove buildpaths from scripts and generated headers
        uw-imap: Pass CFLAGS from environment
        libmad: Add a patch to pass cflags to build
        libpeas: Fix reference to TMPDIR in tests
        lirc: Define SH_PATH=/bin/sh
        mce-inject: Pass CFLAGS to make
        nbdkit: Remove buildpaths from binaries
        mpv: Remove references to builddir from mpv binary
        libnice: Remove buildpaths from binaries
        curlpp: Remove references to buildpaths e.g. TMPDIR
        unbound: Remove references to buildpaths
        uml-utilities: Fix references to TMPDIR
        openct: Fix buildpaths being emitted into generated types.h
        minifi-cpp: Remove references to buildpaths in generated files
        freerdp: Fix reference to TMPDIR in libfreerdp2.so
        nautilus: Fix buildpath QA errors
        cgdb: Fix buildpaths emitted into cgdb binary
        ibus: Point python interpreter to target location
        gimp: Fix buildpaths in binaries and scripts
        libgphoto2: Edit out sysroot from CC variable in configure
        vlan: Pass CFLAGS via CCFLAGS
        sgpio: Pass CFLAGS to make
        x265: Pass --debug-prefix-map to nasm

  Markus Volk (1):
        polkit: update SRC_URI

  Martin Jansa (16):
        lirc: fix do_install with multilib
        dleyna-{server,renderer}: fix dev-so QA issue with multilib
        libreport: add dependency on libarchive
        libxmlb: add missing dependency on glib-2.0 and xz
        geoclue: fix build without gobject-introspection-data
        appstream: fix build without gobject-introspection-data
        ostree: fix build without gobject-introspection-data
        rdfind: fix build with -Werror=return-type
        spice-gtk: respect gobject-introspection-data
        cpulimit: fix do_install with multilib
        libnfs: fix installed-vs-shipped issues with multilib
        btrfsmaintenance: install to ${datadir}/${BPN}
        libtomcrypt: pass LIBPATH to fix installed-vs-shipped with multilib
        nanopb: fix installed-vs-shipped with multilib
        nv-codec-headers: fix installed-vs-shipped with multilib
        zfs: fix installation paths for multilib

  Ming Liu (2):
        libusbgx: drop hard-coded /usr/bin,/etc
        libusbgx: check scripts in /etc/usbgx.d

  Mingli Yu (2):
        php: Link with libatomic on rv64
        minicoredumper: correct the sysvinit service file attribute

  Peter Marko (1):
        ntp: whitelist CVE-2019-11331

  Petr Gotthard (1):
        gensio: fix QA issue: non -staticdev package with .a libraries

  Valeria Petrov (1):
        apache2: upgrade 2.4.56 -> 2.4.57

  Virendra Thakur (2):
        p7zip: fix for CVE-2018-5996
        p7zip: Fix for CVE-2016-9296

  Wang Mingyu (6):
        redis: upgrade 7.0.10 -> 7.0.11
        hdf5: Fix install conflict when enable multilib.
        php: upgrade 8.2.4 -> 8.2.5
        postgresql: upgrade 15.2 -> 15.3
        php: upgrade 8.2.5 -> 8.2.6
        nautilus: upgrade 44.0 -> 44.1

  Yogita Urade (1):
        dlt-daemon: fix CVE-2023-26257

  schitrod=cisco.com@lists.openembedded.org (1):
        gnulib: Update recipe name to 2018-12-18

meta-security: 53c5cc794f..d7db0a3bd1:
  Peter Hoyes (1):
        meta-parsec/layer.conf: Insert addpylib declaration

meta-arm: 0b5724266a..8db460fa5d:
  Abdellatif El Khlifi (2):
        kas: corstone1000: set branches to mickledore
        arm-bsp/u-boot: corstone1000: upgrade NVMXIP support

  Emekcan Aras (3):
        arm-bsp/trusted-firmware-m: Align Capsule Update with GPT changes
        arm-bsp/wic: corstone1000: Fix and limit the partition size for corstone1000
        arm-bsp/u-boot: corstone1000: enable PSCI reset

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Id8a293d03f6c2320ff407a7aaed4416038ba04ed

1 files changed, 286 insertions, 0 deletions

diff --git a/poky/meta/recipes-devtools/gdb/gdb/0001-aarch64-Check-for-valid-inferior-thread-regcache-bef.patch b/poky/meta/recipes-devtools/gdb/gdb/0001-aarch64-Check-for-valid-inferior-thread-regcache-bef.patch
new file mode 100644
index 0000000000..9adf4a4db5
--- /dev/null
+++ b/poky/meta/recipes-devtools/gdb/gdb/0001-aarch64-Check-for-valid-inferior-thread-regcache-bef.patch
@@ -0,0 +1,286 @@
+From b3eff3e15576229af9bae026c5c23ee694b90389 Mon Sep 17 00:00:00 2001
+From: Luis Machado <luis.machado@arm.com>
+Date: Fri, 24 Mar 2023 07:58:38 +0000
+Subject: [PATCH] aarch64: Check for valid inferior thread/regcache before
+ reading pauth registers
+
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@arm.com>
+
+There were reports of gdb throwing internal errors when calling
+inferior_thread ()/get_current_regcache () on a system with
+Pointer Authentication enabled.
+
+In such cases, gdb produces the following backtrace, or a variation
+of it (for gdb's with the non-address removal implemented only in
+the aarch64-linux-tdep.c file).
+
+../../../repos/binutils-gdb/gdb/thread.c:86: internal-error: inferior_thread: Assertion `current_thread_ != nullptr' failed.
+A problem internal to GDB has been detected,
+further debugging may prove unreliable.
+----- Backtrace -----
+0xaaaae04a571f gdb_internal_backtrace_1
+        ../../../repos/binutils-gdb/gdb/bt-utils.c:122
+0xaaaae04a57f3 _Z22gdb_internal_backtracev
+        ../../../repos/binutils-gdb/gdb/bt-utils.c:168
+0xaaaae0b52ccf internal_vproblem
+        ../../../repos/binutils-gdb/gdb/utils.c:401
+0xaaaae0b5310b _Z15internal_verrorPKciS0_St9__va_list
+        ../../../repos/binutils-gdb/gdb/utils.c:481
+0xaaaae0e24b8f _Z18internal_error_locPKciS0_z
+        ../../../repos/binutils-gdb/gdbsupport/errors.cc:58
+0xaaaae0a88983 _Z15inferior_threadv
+        ../../../repos/binutils-gdb/gdb/thread.c:86
+0xaaaae0956c87 _Z20get_current_regcachev
+        ../../../repos/binutils-gdb/gdb/regcache.c:428
+0xaaaae035223f aarch64_remove_non_address_bits
+        ../../../repos/binutils-gdb/gdb/aarch64-tdep.c:3572
+0xaaaae03e8abb _Z31gdbarch_remove_non_address_bitsP7gdbarchm
+        ../../../repos/binutils-gdb/gdb/gdbarch.c:3109
+0xaaaae0a692d7 memory_xfer_partial
+        ../../../repos/binutils-gdb/gdb/target.c:1620
+0xaaaae0a695e3 _Z19target_xfer_partialP10target_ops13target_objectPKcPhPKhmmPm
+        ../../../repos/binutils-gdb/gdb/target.c:1684
+0xaaaae0a69e9f target_read_partial
+        ../../../repos/binutils-gdb/gdb/target.c:1937
+0xaaaae0a69fdf _Z11target_readP10target_ops13target_objectPKcPhml
+        ../../../repos/binutils-gdb/gdb/target.c:1977
+0xaaaae0a69937 _Z18target_read_memorymPhl
+        ../../../repos/binutils-gdb/gdb/target.c:1773
+0xaaaae08be523 ps_xfer_memory
+        ../../../repos/binutils-gdb/gdb/proc-service.c:90
+0xaaaae08be6db ps_pdread
+        ../../../repos/binutils-gdb/gdb/proc-service.c:124
+0x40001ed7c3b3 _td_fetch_value
+        /build/glibc-RIFKjK/glibc-2.31/nptl_db/fetch-value.c:115
+0x40001ed791ef td_ta_map_lwp2thr
+        /build/glibc-RIFKjK/glibc-2.31/nptl_db/td_ta_map_lwp2thr.c:194
+0xaaaae07f4473 thread_from_lwp
+        ../../../repos/binutils-gdb/gdb/linux-thread-db.c:413
+0xaaaae07f6d6f _ZN16thread_db_target4waitE6ptid_tP17target_waitstatus10enum_flagsI16target_wait_flagE
+        ../../../repos/binutils-gdb/gdb/linux-thread-db.c:1420
+0xaaaae0a6b33b _Z11target_wait6ptid_tP17target_waitstatus10enum_flagsI16target_wait_flagE
+        ../../../repos/binutils-gdb/gdb/target.c:2586
+0xaaaae0789cf7 do_target_wait_1
+        ../../../repos/binutils-gdb/gdb/infrun.c:3825
+0xaaaae0789e6f operator()
+        ../../../repos/binutils-gdb/gdb/infrun.c:3884
+0xaaaae078a167 do_target_wait
+        ../../../repos/binutils-gdb/gdb/infrun.c:3903
+0xaaaae078b0af _Z20fetch_inferior_eventv
+        ../../../repos/binutils-gdb/gdb/infrun.c:4314
+0xaaaae076652f _Z22inferior_event_handler19inferior_event_type
+        ../../../repos/binutils-gdb/gdb/inf-loop.c:41
+0xaaaae07dc68b handle_target_event
+        ../../../repos/binutils-gdb/gdb/linux-nat.c:4206
+0xaaaae0e25fbb handle_file_event
+        ../../../repos/binutils-gdb/gdbsupport/event-loop.cc:573
+0xaaaae0e264f3 gdb_wait_for_event
+        ../../../repos/binutils-gdb/gdbsupport/event-loop.cc:694
+0xaaaae0e24f9b _Z16gdb_do_one_eventi
+        ../../../repos/binutils-gdb/gdbsupport/event-loop.cc:217
+0xaaaae080f033 start_event_loop
+        ../../../repos/binutils-gdb/gdb/main.c:411
+0xaaaae080f1b7 captured_command_loop
+        ../../../repos/binutils-gdb/gdb/main.c:475
+0xaaaae0810b97 captured_main
+        ../../../repos/binutils-gdb/gdb/main.c:1318
+0xaaaae0810c1b _Z8gdb_mainP18captured_main_args
+        ../../../repos/binutils-gdb/gdb/main.c:1337
+0xaaaae0338453 main
+        ../../../repos/binutils-gdb/gdb/gdb.c:32
+---------------------
+../../../repos/binutils-gdb/gdb/thread.c:86: internal-error: inferior_thread: Assertion `current_thread_ != nullptr' failed.
+A problem internal to GDB has been detected,
+further debugging may prove unreliable.
+Quit this debugging session? (y or n)
+
+We also see failures across the testsuite if the tests get executed on a target
+that has native support for the pointer authentication feature. But
+gdb.base/break.exp and gdb.base/access-mem-running.exp are two examples of
+tests that run into errors and internal errors.
+
+This issue started after commit d88cb738e6a7a7179dfaff8af78d69250c852af1, which
+enabled more broad use of pointer authentication masks to remove non-address
+bits of pointers, but wasn't immediately detected because systems with native
+support for pointer authentication are not that common yet.
+
+The above crash happens because gdb is in the middle of handling an event,
+and do_target_wait_1 calls switch_to_inferior_no_thread, nullifying the
+current thread.  This means a call to inferior_thread () will assert, and
+attempting to call get_current_regcache () will also call inferior_thread (),
+resulting in an assertion as well.
+
+target_has_registers was one function that seemed useful for detecting these
+types of situation where we don't have a register cache. The problem with that
+is the inconsistent state of inferior_ptid, which is used by
+target_has_registers.
+
+Despite the call to switch_to_no_thread in switch_to_inferior_no_thread from
+do_target_wait_1 in the backtrace above clearing inferior_ptid, the call to
+ps_xfer_memory sets inferior_ptid momentarily before reading memory:
+
+static ps_err_e
+ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr,
+                gdb_byte *buf, size_t len, int write)
+{
+  scoped_restore_current_inferior restore_inferior;
+  set_current_inferior (ph->thread->inf);
+
+  scoped_restore_current_program_space restore_current_progspace;
+  set_current_program_space (ph->thread->inf->pspace);
+
+  scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
+  inferior_ptid = ph->thread->ptid;
+
+  CORE_ADDR core_addr = ps_addr_to_core_addr (addr);
+
+  int ret;
+  if (write)
+    ret = target_write_memory (core_addr, buf, len);
+  else
+    ret = target_read_memory (core_addr, buf, len);
+  return (ret == 0 ? PS_OK : PS_ERR);
+}
+
+Maybe this shouldn't happen, or maybe it is just an unfortunate state to be
+in. But this prevents the use of target_has_registers to guard against the
+lack of registers, since, although current_thread_ is still nullptr,
+inferior_ptid is valid and is not null_ptid.
+
+There is another crash scenario after we kill a previously active inferior, in
+which case the gdbarch will still say we support pointer authentication but we
+will also have no current thread (inferior_thread () will assert etc).
+
+If the target has support for pointer authentication, gdb needs to use
+a couple (or 4, for bare-metal) mask registers to mask off some bits of
+pointers, and for that it needs to access the registers.
+
+At some points, like the one from the backtrace above, there is no active
+thread/current regcache because gdb is in the middle of doing event handling
+and switching between threads.
+
+Simon suggested the use of inferior_ptid to fetch the register cache, as
+opposed to relying on the current register cache.  Though we need to make sure
+inferior_ptid is valid (not null_ptid), I think this works nicely.
+
+With inferior_ptid, we can do safety checks along the way, making sure we have
+a thread to fetch a register cache from and checking if the thread is actually
+stopped or running.
+
+The following patch implements this idea with safety checks to make sure we
+don't run into assertions or errors.  If any of the checks fail, we fallback to
+using a default mask to remove non-address bits of a pointer.
+
+I discussed with Pedro the possibility of caching the mask register values
+(which are per-process and can change mid-execution), but there isn't a good
+spot to cache those values. Besides, the mask registers can change constantly
+for bare-metal debugging when switching between exception levels.
+
+In some cases, it is just not possible to get access to these mask registers,
+like the case where threads are running. In those cases, using a default mask
+to remove the non-address bits should be enough.
+
+This can happen when we let threads run in the background and then we attempt
+to access a memory address (now that gdb is capable of reading memory even
+with threads running).  Thus gdb will attempt to remove non-address bits
+of that memory access, will attempt to access registers, running into errors.
+
+Regression-tested on aarch64-linux Ubuntu 20.04.
+---
+ gdb/aarch64-linux-tdep.c | 64 ++++++++++++++++++++++++++++++----------
+ 1 file changed, 49 insertions(+), 15 deletions(-)
+
+diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
+index 20a041c599e..4b2915b8e99 100644
+--- a/gdb/aarch64-linux-tdep.c
++++ b/gdb/aarch64-linux-tdep.c
+@@ -57,6 +57,9 @@
+ #include "elf/common.h"
+ #include "elf/aarch64.h"
+ 
++/* For inferior_ptid and current_inferior ().  */
++#include "inferior.h"
++
+ /* Signal frame handling.
+ 
+       +------------+  ^
+@@ -1986,29 +1989,60 @@ aarch64_linux_decode_memtag_section (struct gdbarch *gdbarch,
+ static CORE_ADDR
+ aarch64_remove_non_address_bits (struct gdbarch *gdbarch, CORE_ADDR pointer)
+ {
+-  aarch64_gdbarch_tdep *tdep = gdbarch_tdep<aarch64_gdbarch_tdep> (gdbarch);
+-
+   /* By default, we assume TBI and discard the top 8 bits plus the VA range
+-     select bit (55).  */
++     select bit (55).  Below we try to fetch information about pointer
++     authentication masks in order to make non-address removal more
++     precise.  */
+   CORE_ADDR mask = AARCH64_TOP_BITS_MASK;
+ 
+-  if (tdep->has_pauth ())
++  /* Check if we have an inferior first.  If not, just use the default
++     mask.
++
++     We use the inferior_ptid here because the pointer authentication masks
++     should be the same across threads of a process.  Since we may not have
++     access to the current thread (gdb may have switched to no inferiors
++     momentarily), we use the inferior ptid.  */
++  if (inferior_ptid != null_ptid)
+     {
+-      /* Fetch the PAC masks.  These masks are per-process, so we can just
+-	 fetch data from whatever thread we have at the moment.
++      /* If we do have an inferior, attempt to fetch its thread's thread_info
++	 struct.  */
++      thread_info *thread
++	= find_thread_ptid (current_inferior ()->process_target (),
++			    inferior_ptid);
+ 
+-	 Also, we have both a code mask and a data mask.  For now they are the
+-	 same, but this may change in the future.  */
+-      struct regcache *regs = get_current_regcache ();
+-      CORE_ADDR cmask, dmask;
++      /* If the thread is running, we will not be able to fetch the mask
++	 registers.  */
++      if (thread != nullptr && thread->state != THREAD_RUNNING)
++	{
++	  /* Otherwise, fetch the register cache and the masks.  */
++	  struct regcache *regs
++	    = get_thread_regcache (current_inferior ()->process_target (),
++				   inferior_ptid);
++
++	  /* Use the gdbarch from the register cache to check for pointer
++	     authentication support, as it matches the features found in
++	     that particular thread.  */
++	  aarch64_gdbarch_tdep *tdep
++	    = gdbarch_tdep<aarch64_gdbarch_tdep> (regs->arch ());
++
++	  /* Is there pointer authentication support?  */
++	  if (tdep->has_pauth ())
++	    {
++	      /* We have both a code mask and a data mask.  For now they are
++		 the same, but this may change in the future.  */
++	      CORE_ADDR cmask, dmask;
+ 
+-      if (regs->cooked_read (tdep->pauth_reg_base, &dmask) != REG_VALID)
+-	dmask = mask;
++	      if (regs->cooked_read (tdep->pauth_reg_base, &dmask)
++		  != REG_VALID)
++		dmask = mask;
+ 
+-      if (regs->cooked_read (tdep->pauth_reg_base + 1, &cmask) != REG_VALID)
+-	cmask = mask;
++	      if (regs->cooked_read (tdep->pauth_reg_base + 1, &cmask)
++		  != REG_VALID)
++		cmask = mask;
+ 
+-      mask |= aarch64_mask_from_pac_registers (cmask, dmask);
++	      mask |= aarch64_mask_from_pac_registers (cmask, dmask);
++	    }
++	}
+     }
+ 
+   return aarch64_remove_top_bits (pointer, mask);
+-- 
+2.34.1
+