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Author SHA1 Message Date
Craig McLure
0e85a22d01 ALSA: usb-audio: Configure sync endpoints before data 
Devices such as the TC-Helicon GoXLR require the sync endpoint to be
configured in advance of the data endpoint in order for sound output
to work.

This patch simply changes the ordering of EP configuration to resolve
this.

Fixes: bf6313a0ff ("ALSA: usb-audio: Refactor endpoint management")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215079
Signed-off-by: Craig McLure <craig@mclure.net>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220524062115.25968-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2022-05-24 09:08:39 +02:00
Jakub Kicinski
677fb75253 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
drivers/net/ethernet/cadence/macb_main.c
  5cebb40bc9 ("net: macb: Fix PTP one step sync support")
  138badbc21 ("net: macb: use NAPI for TX completion path")
https://lore.kernel.org/all/20220523111021.31489367@canb.auug.org.au/

net/smc/af_smc.c
  75c1edf23b ("net/smc: postpone sk_refcnt increment in connect()")
  3aba103006 ("net/smc: align the connect behaviour with TCP")
https://lore.kernel.org/all/20220524114408.4bf1af38@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 21:19:17 -07:00
Linus Torvalds
143a6252e1 arm64 updates for 5.19: 
- Initial support for the ARMv9 Scalable Matrix Extension (SME). SME
   takes the approach used for vectors in SVE and extends this to provide
   architectural support for matrix operations. No KVM support yet, SME
   is disabled in guests.
 
 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.
 
 - btrfs search_ioctl() fix for live-lock with sub-page faults.
 
 - arm64 perf updates: support for the Hisilicon "CPA" PMU for monitoring
   coherent I/O traffic, support for Arm's CMN-650 and CMN-700
   interconnect PMUs, minor driver fixes, kerneldoc cleanup.
 
 - Kselftest updates for SME, BTI, MTE.
 
 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.
 
 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).
 
 - stacktrace cleanups.
 
 - ftrace cleanups.
 
 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Initial support for the ARMv9 Scalable Matrix Extension (SME).

   SME takes the approach used for vectors in SVE and extends this to
   provide architectural support for matrix operations. No KVM support
   yet, SME is disabled in guests.

 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.

 - btrfs search_ioctl() fix for live-lock with sub-page faults.

 - arm64 perf updates: support for the Hisilicon "CPA" PMU for
   monitoring coherent I/O traffic, support for Arm's CMN-650 and
   CMN-700 interconnect PMUs, minor driver fixes, kerneldoc cleanup.

 - Kselftest updates for SME, BTI, MTE.

 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.

 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).

 - stacktrace cleanups.

 - ftrace cleanups.

 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (145 commits)
  arm64/sysreg: Generate definitions for FAR_ELx
  arm64/sysreg: Generate definitions for DACR32_EL2
  arm64/sysreg: Generate definitions for CSSELR_EL1
  arm64/sysreg: Generate definitions for CPACR_ELx
  arm64/sysreg: Generate definitions for CONTEXTIDR_ELx
  arm64/sysreg: Generate definitions for CLIDR_EL1
  arm64/sve: Move sve_free() into SVE code section
  arm64: Kconfig.platforms: Add comments
  arm64: Kconfig: Fix indentation and add comments
  arm64: mm: avoid writable executable mappings in kexec/hibernate code
  arm64: lds: move special code sections out of kernel exec segment
  arm64/hugetlb: Implement arm64 specific huge_ptep_get()
  arm64/hugetlb: Use ptep_get() to get the pte value of a huge page
  arm64: kdump: Do not allocate crash low memory if not needed
  arm64/sve: Generate ZCR definitions
  arm64/sme: Generate defintions for SVCR
  arm64/sme: Generate SMPRI_EL1 definitions
  arm64/sme: Automatically generate SMPRIMAP_EL2 definitions
  arm64/sme: Automatically generate SMIDR_EL1 defines
  arm64/sme: Automatically generate defines for SMCR
  ...
 2022-05-23 21:06:11 -07:00
Linus Torvalds
d6edf95109 ARM updates for 5.19-rc1: 
- amba bus updates
 - simplify ldr_this_cpu assembler macro for uniprocessor builds
 - avoid explicit assembler literal loads
 - more spectre-bhb improvements
 - add Cortex-A9 Errata 764319 workaround
 - add all unwind tables for modules
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - amba bus updates

 - simplify ldr_this_cpu assembler macro for uniprocessor builds

 - avoid explicit assembler literal loads

 - more spectre-bhb improvements

 - add Cortex-A9 Errata 764319 workaround

 - add all unwind tables for modules

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9204/2: module: Add all unwind tables when load module
  ARM: 9206/1: A9: Add ARM ERRATA 764319 workaround (Updated)
  ARM: 9201/1: spectre-bhb: rely on linker to emit cross-section literal loads
  ARM: 9200/1: spectre-bhb: avoid cross-subsection jump using a numbered label
  ARM: 9199/1: spectre-bhb: use local DSB and elide ISB in loop8 sequence
  ARM: 9198/1: spectre-bhb: simplify BPIALL vector macro
  ARM: 9195/1: entry: avoid explicit literal loads
  ARM: 9194/1: assembler: simplify ldr_this_cpu for !SMP builds
  ARM: 9192/1: amba: fix memory leak in amba_device_try_add()
  ARM: 9193/1: amba: Add amba_read_periphid() helper
 2022-05-23 21:04:25 -07:00
Linus Torvalds
95fbef17e8 s390 updates for 5.19 merge window 
- Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so
   that perf can make use of this.
 
 - Add new IBM z16 extended counter set to cpumf support.
 
 - Add vdso randomization support.
 
 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.
 
 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.
 
 - Improve error logging for PCI.
 
 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.
 
 - Various other small enhancements, bug fixes, and cleanups all over
   the place.
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Merge tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so that
   perf can make use of this.

 - Add new IBM z16 extended counter set to cpumf support.

 - Add vdso randomization support.

 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.

 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.

 - Improve error logging for PCI.

 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.

 - Various other small enhancements, bug fixes, and cleanups all over
   the place.

* tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/head: get rid of 31 bit leftovers
  scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390
  s390/boot: do not emit debug info for assembly with llvm's IAS
  s390/boot: workaround llvm IAS bug
  s390/purgatory: workaround llvm's IAS limitations
  s390/entry: workaround llvm's IAS limitations
  s390/alternatives: remove padding generation code
  s390/alternatives: provide identical sized orginal/alternative sequences
  s390/cpumf: add new extended counter set for IBM z16
  s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES
  s390/stp: clock_delta should be signed
  s390/stp: fix todoff size
  s390/pai: add support for cryptography counters
  entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
  s390/compat: cleanup compat_linux.h header file
  s390/entry: remove broken and not needed code
  s390/boot: convert parmarea to C
  s390/boot: convert initial lowcore to C
  s390/ptrace: move short psw definitions to ptrace header file
  s390/head: initialize all new psws
  ...
 2022-05-23 21:01:30 -07:00
Linus Torvalds
67c642e0d9 arch/csky patches for 5.19-rc1 
This pull request we've done:
  - Three atomic optimization
  - Memcpy/memcpy_io optimization
  - Some coding conventions for Kbuild, removing the warning
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Merge tag 'csky-for-linus-5.19-rc1' of https://github.com/c-sky/csky-linux

Pull arch/csky updates from Guo Ren:

 - Three atomic optimizations

 - memcpy/memcpy_io optimization

 - Some coding conventions for Kbuild, removing warnings

* tag 'csky-for-linus-5.19-rc1' of https://github.com/c-sky/csky-linux:
  csky: Move $(core-y) into arch/csky/Kbuild
  csky: Remove unused core-y for dts
  csky: Remove unused $(dtb-y) from boot/Makefile
  csky: atomic: Add conditional atomic operations' optimization
  csky: atomic: Add custom atomic.h implementation
  csky: atomic: Optimize cmpxchg with acquire & release
  csky: optimize memcpy_{from,to}io() and memset_io()
  csky: Add C based string functions
  csky: Fix versioncheck warnings
  csky: patch_text: Fixup last cpu should be master
  csky: fix typos in comments
 2022-05-23 20:59:19 -07:00
Linus Torvalds
fdd8f6585c m68k updates for v5.19 
- Introduce virtual m68k machine based on Android Goldfish devices,
   - Defconfig updates,
   - Minor fixes and improvements.
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Merge tag 'm68k-for-v5.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - Introduce virtual m68k machine based on Android Goldfish devices

  - defconfig updates

  - Minor fixes and improvements

* tag 'm68k-for-v5.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: atari: Make Atari ROM port I/O write macros return void
  m68k: math-emu: Fix dependencies of math emulation support
  m68k: math-emu: Fix typos in comments
  m68k: Wire up syscall_trace_enter/leave for m68k
  m68k: defconfig: Update defconfigs for v5.18-rc1
  m68k: Introduce a virtual m68k machine
  clocksource/drivers: Add a goldfish-timer clocksource
  rtc: goldfish: Use gf_ioread32()/gf_iowrite32()
  tty: goldfish: Introduce gf_ioread32()/gf_iowrite32()
 2022-05-23 20:56:17 -07:00
Linus Torvalds
17a05c8f1e Xtensa updates for v5.19 
- support coprocessors on SMP
 - support KCSAN
 - support handling protection faults in noMMU configurations
 - support using coprocessors in the kernel mode
 - support hibernation
 - enable context tracking
 - enable HAVE_VIRT_CPU_ACCOUNTING_GEN
 - support division by 0 exception on cores without HW division option
 - clean up locking in the ISS network driver
 - clean up kernel entry assemly code
 - various minor fixes
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Merge tag 'xtensa-20220523' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa architecture updates from Max Filippov:

 - support coprocessors on SMP

 - support KCSAN

 - support handling protection faults in noMMU configurations

 - support using coprocessors in the kernel mode

 - support hibernation

 - enable context tracking

 - enable HAVE_VIRT_CPU_ACCOUNTING_GEN

 - support division by 0 exception on cores without HW division option

 - clean up locking in the ISS network driver

 - clean up kernel entry assemly code

 - various minor fixes

* tag 'xtensa-20220523' of https://github.com/jcmvbkbc/linux-xtensa: (36 commits)
  xtensa: Return true/false (not 1/0) from bool function
  xtensa: improve call0 ABI probing
  xtensa: support artificial division by 0 exception
  xtensa: add trap handler for division by zero
  xtensa/simdisk: fix proc_read_simdisk()
  xtensa: no need to initialise statics to 0
  xtensa: clean up labels in the kernel entry assembly
  xtensa: don't leave invalid TLB entry in fast_store_prohibited
  xtensa: fix declaration of _SecondaryResetVector_text_*
  irqchip: irq-xtensa-mx: fix initial IRQ affinity
  xtensa: enable ARCH_HAS_DEBUG_VM_PGTABLE
  xtensa: add hibernation support
  xtensa: support coprocessors on SMP
  xtensa: get rid of stack frame in coprocessor_flush
  xtensa: merge SAVE_CP_REGS_TAB and LOAD_CP_REGS_TAB
  xtensa: add xtensa_xsr macro
  xtensa: handle coprocessor exceptions in kernel mode
  xtensa: use callx0 opcode in fast_coprocessor
  xtensa: clean up excsave1 initialization
  xtensa: clean up declarations in coprocessor.h
  ...
 2022-05-23 20:54:17 -07:00
Linus Torvalds
d613060475 xen: branch for v5.19-rc1 
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Merge tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - decouple the PV interface from kernel internals in the Xen
   scsifront/scsiback pv drivers

 - harden the Xen scsifront PV driver against a malicious backend driver

 - simplify Xen PV frontend driver ring page setup

 - support Xen setups with multiple domains created at boot time to
   tolerate Xenstore coming up late

 - two small cleanup patches

* tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (29 commits)
  xen: add support for initializing xenstore later as HVM domain
  xen: sync xs_wire.h header with upstream xen
  x86: xen: remove STACK_FRAME_NON_STANDARD from xen_cpuid
  xen-blk{back,front}: Update contact points for buffer_squeeze_duration_ms and feature_persistent
  xen/xenbus: eliminate xenbus_grant_ring()
  xen/sndfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/usbfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/scsifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/pcifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/drmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/tpmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/netfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/blkfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/xenbus: add xenbus_setup_ring() service function
  xen: update ring.h
  xen/shbuf: switch xen-front-pgdir-shbuf to use INVALID_GRANT_REF
  xen/dmabuf: switch gntdev-dmabuf to use INVALID_GRANT_REF
  xen/sound: switch xen_snd_front to use INVALID_GRANT_REF
  xen/drm: switch xen_drm_front to use INVALID_GRANT_REF
  xen/usb: switch xen-hcd to use INVALID_GRANT_REF
  ...
 2022-05-23 20:49:45 -07:00
Linus Torvalds
8443516da6 platform-drivers-x86 for v5.19-1 
Highlights:
  -  New drivers:
     -  Intel "In Field Scan" (IFS) support
     -  Winmate FM07/FM07P buttons
     -  Mellanox SN2201 support
  -  AMD PMC driver enhancements
  -  Lots of various other small fixes and hardware-id additions
 
 The following is an automated git shortlog grouped by driver:
 
 Documentation:
  -  In-Field Scan
 
 Documentation/ABI:
  -  Add new attributes for mlxreg-io sysfs interfaces
  -  sysfs-class-firmware-attributes: Misc. cleanups
  -  sysfs-class-firmware-attributes: Fix Sphinx errors
  -  sysfs-driver-intel_sdsi: Fix sphinx warnings
 
 acerhdf:
  -  Cleanup str_starts_with()
 
 amd-pmc:
  -  Fix build error unused-function
  -  Shuffle location of amd_pmc_get_smu_version()
  -  Avoid reading SMU version at probe time
  -  Move FCH init to first use
  -  Move SMU logging setup out of init
  -  Fix compilation without CONFIG_SUSPEND
 
 amd_hsmp:
  -  Add HSMP protocol version 5 messages
 
 asus-nb-wmi:
  -  Add keymap for MyASUS key
 
 asus-wmi:
  -  Update unknown code message
  -  Use kobj_to_dev()
  -  Fix driver not binding when fan curve control probe fails
  -  Potential buffer overflow in asus_wmi_evaluate_method_buf()
 
 barco-p50-gpio:
  -  Fix duplicate included linux/io.h
 
 dell-laptop:
  -  Add quirk entry for Latitude 7520
 
 gigabyte-wmi:
  -  Add support for Z490 AORUS ELITE AC and X570 AORUS ELITE WIFI
  -  added support for B660 GAMING X DDR4 motherboard
 
 hp-wmi:
  -  Correct code style related issues
 
 intel-hid:
  -  fix _DSM function index handling
 
 intel-uncore-freq:
  -  Prevent driver loading in guests
 
 intel_cht_int33fe:
  -  Set driver data
 
 platform/mellanox:
  -  Add support for new SN2201 system
 
 platform/surface:
  -  aggregator: Fix initialization order when compiling as builtin module
  -  gpe: Add support for Surface Pro 8
 
 platform/x86/dell:
  -  add buffer allocation/free functions for SMI calls
 
 platform/x86/intel:
  -  Fix 'rmmod pmt_telemetry' panic
  -  pmc/core: Use kobj_to_dev()
  -  pmc/core: change pmc_lpm_modes to static
 
 platform/x86/intel/ifs:
  -  Add CPU_SUP_INTEL dependency
  -  add ABI documentation for IFS
  -  Add IFS sysfs interface
  -  Add scan test support
  -  Authenticate and copy to secured memory
  -  Check IFS Image sanity
  -  Read IFS firmware image
  -  Add stub driver for In-Field Scan
 
 platform/x86/intel/sdsi:
  -  Fix bug in multi packet reads
  -  Poll on ready bit for writes
  -  Handle leaky bucket
 
 platform_data/mlxreg:
  -  Add field for notification callback
 
 pmc_atom:
  -  dont export pmc_atom_read - no modular users
  -  remove unused pmc_atom_write()
 
 samsung-laptop:
  -  use kobj_to_dev()
  -  Fix an unsigned comparison which can never be negative
 
 stop_machine:
  -  Add stop_core_cpuslocked() for per-core operations
 
 think-lmi:
  -  certificate support clean ups
 
 thinkpad_acpi:
  -  Correct dual fan probe
  -  Add a s2idle resume quirk for a number of laptops
  -  Convert btusb DMI list to quirks
 
 tools/power/x86/intel-speed-select:
  -  Fix warning for perf_cap.cpu
  -  Display error on turbo mode disabled
  -  fix build failure when using -Wl,--as-needed
 
 toshiba_acpi:
  -  use kobj_to_dev()
 
 trace:
  -  platform/x86/intel/ifs: Add trace point to track Intel IFS operations
 
 winmate-fm07-keys:
  -  Winmate FM07/FM07P buttons
 
 wmi:
  -  replace usage of found with dedicated list iterator variable
 
 x86/microcode/intel:
  -  Expose collect_cpu_info_early() for IFS
 
 x86/msr-index:
  -  Define INTEGRITY_CAPABILITIES MSR
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Merge tag 'platform-drivers-x86-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
 "This includes some small changes to kernel/stop_machine.c and arch/x86
  which are deps of the new Intel IFS support.

  Highlights:

   - New drivers:
       - Intel "In Field Scan" (IFS) support
       - Winmate FM07/FM07P buttons
       - Mellanox SN2201 support

   -  AMD PMC driver enhancements

   -  Lots of various other small fixes and hardware-id additions"

* tag 'platform-drivers-x86-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (54 commits)
  platform/x86/intel/ifs: Add CPU_SUP_INTEL dependency
  platform/x86: intel_cht_int33fe: Set driver data
  platform/x86: intel-hid: fix _DSM function index handling
  platform/x86: toshiba_acpi: use kobj_to_dev()
  platform/x86: samsung-laptop: use kobj_to_dev()
  platform/x86: gigabyte-wmi: Add support for Z490 AORUS ELITE AC and X570 AORUS ELITE WIFI
  tools/power/x86/intel-speed-select: Fix warning for perf_cap.cpu
  tools/power/x86/intel-speed-select: Display error on turbo mode disabled
  Documentation: In-Field Scan
  platform/x86/intel/ifs: add ABI documentation for IFS
  trace: platform/x86/intel/ifs: Add trace point to track Intel IFS operations
  platform/x86/intel/ifs: Add IFS sysfs interface
  platform/x86/intel/ifs: Add scan test support
  platform/x86/intel/ifs: Authenticate and copy to secured memory
  platform/x86/intel/ifs: Check IFS Image sanity
  platform/x86/intel/ifs: Read IFS firmware image
  platform/x86/intel/ifs: Add stub driver for In-Field Scan
  stop_machine: Add stop_core_cpuslocked() for per-core operations
  x86/msr-index: Define INTEGRITY_CAPABILITIES MSR
  x86/microcode/intel: Expose collect_cpu_info_early() for IFS
  ...
 2022-05-23 20:38:39 -07:00
Linus Torvalds
cfe1cb014b A set of patches to prevent crashes in SGX enclaves under heavy memory 
pressure:
 
 SGX uses normal RAM allocated from special shmem files as backing storage
 when it runs out of SGX memory (EPC).  The code was overly aggressive when
 freeing shmem pages and was inadvertently freeing perfectly good data.
 This resulted in failures in the SGX instructions used to swap data back
 into SGX memory.
 
 This turned out to be really hard to trigger in mainline.  It was
 originally encountered testing the out-of-tree "SGX2" patches, but later
 reproduced on mainline.
 
 Fix the data loss by being more careful about truncating pages out of
 the backing storage and more judiciously setting pages dirty.
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Merge tag 'x86_sgx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 SGX updates from Dave Hansen:
 "A set of patches to prevent crashes in SGX enclaves under heavy memory
  pressure:

  SGX uses normal RAM allocated from special shmem files as backing
  storage when it runs out of SGX memory (EPC). The code was overly
  aggressive when freeing shmem pages and was inadvertently freeing
  perfectly good data. This resulted in failures in the SGX instructions
  used to swap data back into SGX memory.

  This turned out to be really hard to trigger in mainline. It was
  originally encountered testing the out-of-tree "SGX2" patches, but
  later reproduced on mainline.

  Fix the data loss by being more careful about truncating pages out of
  the backing storage and more judiciously setting pages dirty"

* tag 'x86_sgx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Ensure no data in PCMD page after truncate
  x86/sgx: Fix race between reclaimer and page fault handler
  x86/sgx: Obtain backing storage page with enclave mutex held
  x86/sgx: Mark PCMD page as dirty when modifying contents
  x86/sgx: Disconnect backing page references from dirty status
 2022-05-23 20:34:58 -07:00
Linus Torvalds
d6ecaa0024 - Get rid of CONFIG_LEGACY_VSYSCALL_EMULATE as nothing should be using it anymore 
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Merge tag 'x86_vdso_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 vdso update from Borislav Petkov:

 - Get rid of CONFIG_LEGACY_VSYSCALL_EMULATE as nothing should be using
   it anymore

* tag 'x86_vdso_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vsyscall: Remove CONFIG_LEGACY_VSYSCALL_EMULATE
 2022-05-23 19:46:50 -07:00
Linus Torvalds
88699f8fbf - Make CPU vendor dependency explicit against random config build failures 
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Merge tag 'x86_microcode_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 microcode loader update from Borislav Petkov:

 - Make CPU vendor dependency explicit against random config build
   failures

* tag 'x86_microcode_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Add explicit CPU vendor dependency
 2022-05-23 19:40:33 -07:00
Linus Torvalds
abc8babefb - A gargen variety of fixes which don't fit any other tip bucket: 
- Remove function export
  - Correct asm constraint
  - Fix __setup handlers retval
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Merge tag 'x86_misc_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 updates from Borislav Petkov:
 "A variety of fixes which don't fit any other tip bucket:

   - Remove unnecessary function export

   - Correct asm constraint

   - Fix __setup handlers retval"

* tag 'x86_misc_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Cleanup the control_va_addr_alignment() __setup handler
  x86: Fix return value of __setup handlers
  x86/delay: Fix the wrong asm constraint in delay_loop()
  x86/amd_nb: Unexport amd_cache_northbridges()
 2022-05-23 19:32:59 -07:00
Linus Torvalds
3e2cbc016b - Add Raptor Lake to the set of CPU models which support splitlock 
- Make life miserable for apps using split locks by slowing them down
 considerably while the rest of the system remains responsive. The hope
 is it will hurt more and people will really fix their misaligned locks
 apps. As a result, free a TIF bit.
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Merge tag 'x86_splitlock_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 splitlock updates from Borislav Petkov:

 - Add Raptor Lake to the set of CPU models which support splitlock

 - Make life miserable for apps using split locks by slowing them down
   considerably while the rest of the system remains responsive. The
   hope is it will hurt more and people will really fix their misaligned
   locks apps. As a result, free a TIF bit.

* tag 'x86_splitlock_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/split_lock: Enable the split lock feature on Raptor Lake
  x86/split-lock: Remove unused TIF_SLD bit
  x86/split_lock: Make life miserable for split lockers
 2022-05-23 19:24:47 -07:00
Linus Torvalds
9166542010 - Always do default APIC routing setup so that cpumasks are properly 
allocated and are present when later accessed ("nosmp" and x2APIC)
 
 - Clarify the bit overlap between an old APIC and a modern, integrated one
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Merge tag 'x86_apic_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 APIC updates from Borislav Petkov:

 - Always do default APIC routing setup so that cpumasks are properly
   allocated and are present when later accessed ("nosmp" and x2APIC)

 - Clarify the bit overlap between an old APIC and a modern, integrated
   one

* tag 'x86_apic_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Do apic driver probe for "nosmp" use case
  x86/apic: Clarify i82489DX bit overlap in APIC_LVT0
 2022-05-23 19:16:09 -07:00
Linus Torvalds
e3228a86a3 - A single debug message fix 
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Merge tag 'x86_kdump_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 kdump fixlet from Borislav Petkov:

 - A single debug message fix

* tag 'x86_kdump_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/crash: Fix minor typo/bug in debug message
 2022-05-23 19:14:17 -07:00
Linus Torvalds
1abcb10d6e - A couple of changes enabling SGI UV5 support 
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Merge tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 platform updates from Borislav Petkov:

 - A couple of changes enabling SGI UV5 support

* tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/uv: Log gap hole end size
  x86/platform/uv: Update TSC sync state for UV5
  x86/platform/uv: Update NMI Handler for UV5
 2022-05-23 19:11:08 -07:00
Linus Torvalds
c415b53ad0 - A sparse address space annotation fix 
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Merge tag 'x86_mm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm fixlet from Borislav Petkov:

 - A sparse address space annotation fix

* tag 'x86_mm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fault: Cast an argument to the proper address space in prefetch()
 2022-05-23 18:59:24 -07:00
Linus Torvalds
e36ae2290f - Add support for XSAVEC - the Compacted XSTATE saving variant - and 
thus allow for guests to use this compacted XSTATE variant when the
 hypervisor exports that support
 
 - A variable shadowing cleanup
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Merge tag 'x86_fpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fpu updates from Borislav Petkov:

 - Add support for XSAVEC - the Compacted XSTATE saving variant - and
   thus allow for guests to use this compacted XSTATE variant when the
   hypervisor exports that support

 - A variable shadowing cleanup

* tag 'x86_fpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Cleanup variable shadowing
  x86/fpu/xsave: Support XSAVEC in the kernel
 2022-05-23 18:49:16 -07:00
Linus Torvalds
de8ac81747 - Remove all the code around GS switching on 32-bit now that it is not 
needed anymore
 
 - Other misc improvements
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Merge tag 'x86_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core x86 updates from Borislav Petkov:

 - Remove all the code around GS switching on 32-bit now that it is not
   needed anymore

 - Other misc improvements

* tag 'x86_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bug: Use normal relative pointers in 'struct bug_entry'
  x86/nmi: Make register_nmi_handler() more robust
  x86/asm: Merge load_gs_index()
  x86/32: Remove lazy GS macros
  ELF: Remove elf_core_copy_kernel_regs()
  x86/32: Simplify ELF_CORE_COPY_REGS
 2022-05-23 18:42:07 -07:00
Linus Torvalds
a13dc4d409 - Serious sanitization and cleanup of the whole APERF/MPERF and 
frequency invariance code along with removing the need for unnecessary IPIs
 
 - Finally remove a.out support
 
 - The usual trivial cleanups and fixes all over x86
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Merge tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Borislav Petkov:

 - Serious sanitization and cleanup of the whole APERF/MPERF and
   frequency invariance code along with removing the need for
   unnecessary IPIs

 - Finally remove a.out support

 - The usual trivial cleanups and fixes all over x86

* tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86: Remove empty files
  x86/speculation: Add missing srbds=off to the mitigations= help text
  x86/prctl: Remove pointless task argument
  x86/aperfperf: Make it correct on 32bit and UP kernels
  x86/aperfmperf: Integrate the fallback code from show_cpuinfo()
  x86/aperfmperf: Replace arch_freq_get_on_cpu()
  x86/aperfmperf: Replace aperfmperf_get_khz()
  x86/aperfmperf: Store aperf/mperf data for cpu frequency reads
  x86/aperfmperf: Make parts of the frequency invariance code unconditional
  x86/aperfmperf: Restructure arch_scale_freq_tick()
  x86/aperfmperf: Put frequency invariance aperf/mperf data into a struct
  x86/aperfmperf: Untangle Intel and AMD frequency invariance init
  x86/aperfmperf: Separate AP/BP frequency invariance init
  x86/smp: Move APERF/MPERF code where it belongs
  x86/aperfmperf: Dont wake idle CPUs in arch_freq_get_on_cpu()
  x86/process: Fix kernel-doc warning due to a changed function name
  x86: Remove a.out support
  x86/mm: Replace nodes_weight() with nodes_empty() where appropriate
  x86: Replace cpumask_weight() with cpumask_empty() where appropriate
  x86/pkeys: Remove __arch_set_user_pkey_access() declaration
  ...
 2022-05-23 18:17:09 -07:00
Linus Torvalds
1de564b8c1 - Add a "make x86_debug.config" target which enables a bunch of useful 
config debug options when trying to debug an issue
 
 - A gcc12 build warnings fix
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Merge tag 'x86_build_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 build updates from Borislav Petkov:

 - Add a "make x86_debug.config" target which enables a bunch of useful
   config debug options when trying to debug an issue

 - A gcc-12 build warnings fix

* tag 'x86_build_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Wrap literal addresses in absolute_pointer()
  x86/configs: Add x86 debugging Kconfig fragment plus docs
 2022-05-23 18:15:44 -07:00
Linus Torvalds
42b682a30f - A bunch of changes towards streamlining low level asm helpers' calling 
conventions so that former can be converted to C eventually
 
 - Simplify PUSH_AND_CLEAR_REGS so that it can be used at the system call
 entry paths instead of having opencoded, slightly different variants of it
 everywhere
 
 - Misc other fixes
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Merge tag 'x86_asm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 asm updates from Borislav Petkov:

 - A bunch of changes towards streamlining low level asm helpers'
   calling conventions so that former can be converted to C eventually

 - Simplify PUSH_AND_CLEAR_REGS so that it can be used at the system
   call entry paths instead of having opencoded, slightly different
   variants of it everywhere

 - Misc other fixes

* tag 'x86_asm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry: Fix register corruption in compat syscall
  objtool: Fix STACK_FRAME_NON_STANDARD reloc type
  linkage: Fix issue with missing symbol size
  x86/entry: Remove skip_r11rcx
  x86/entry: Use PUSH_AND_CLEAR_REGS for compat
  x86/entry: Simplify entry_INT80_compat()
  x86/mm: Simplify RESERVE_BRK()
  x86/entry: Convert SWAPGS to swapgs and remove the definition of SWAPGS
  x86/entry: Don't call error_entry() for XENPV
  x86/entry: Move CLD to the start of the idtentry macro
  x86/entry: Move PUSH_AND_CLEAR_REGS out of error_entry()
  x86/entry: Switch the stack after error_entry() returns
  x86/traps: Use pt_regs directly in fixup_bad_iret()
 2022-05-23 18:08:46 -07:00
Linus Torvalds
c5a3d3c01e - Remove a bunch of chicken bit options to turn off CPU features which 
are not really needed anymore
 
 - Misc fixes and cleanups
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Merge tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 CPU feature updates from Borislav Petkov:

 - Remove a bunch of chicken bit options to turn off CPU features which
   are not really needed anymore

 - Misc fixes and cleanups

* tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Add missing prototype for unpriv_ebpf_notify()
  x86/pm: Fix false positive kmemleak report in msr_build_context()
  x86/speculation/srbds: Do not try to turn mitigation off when not supported
  x86/cpu: Remove "noclflush"
  x86/cpu: Remove "noexec"
  x86/cpu: Remove "nosmep"
  x86/cpu: Remove CONFIG_X86_SMAP and "nosmap"
  x86/cpu: Remove "nosep"
  x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid=
 2022-05-23 18:01:31 -07:00
Linus Torvalds
3a755ebcc2 Intel Trust Domain Extensions 
This is the Intel version of a confidential computing solution called
 Trust Domain Extensions (TDX). This series adds support to run the
 kernel as part of a TDX guest. It provides similar guest protections to
 AMD's SEV-SNP like guest memory and register state encryption, memory
 integrity protection and a lot more.
 
 Design-wise, it differs from AMD's solution considerably: it uses
 a software module which runs in a special CPU mode called (Secure
 Arbitration Mode) SEAM. As the name suggests, this module serves as sort
 of an arbiter which the confidential guest calls for services it needs
 during its lifetime.
 
 Just like AMD's SNP set, this series reworks and streamlines certain
 parts of x86 arch code so that this feature can be properly accomodated.
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Merge tag 'x86_tdx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull Intel TDX support from Borislav Petkov:
 "Intel Trust Domain Extensions (TDX) support.

  This is the Intel version of a confidential computing solution called
  Trust Domain Extensions (TDX). This series adds support to run the
  kernel as part of a TDX guest. It provides similar guest protections
  to AMD's SEV-SNP like guest memory and register state encryption,
  memory integrity protection and a lot more.

  Design-wise, it differs from AMD's solution considerably: it uses a
  software module which runs in a special CPU mode called (Secure
  Arbitration Mode) SEAM. As the name suggests, this module serves as
  sort of an arbiter which the confidential guest calls for services it
  needs during its lifetime.

  Just like AMD's SNP set, this series reworks and streamlines certain
  parts of x86 arch code so that this feature can be properly
  accomodated"

* tag 'x86_tdx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  x86/tdx: Fix RETs in TDX asm
  x86/tdx: Annotate a noreturn function
  x86/mm: Fix spacing within memory encryption features message
  x86/kaslr: Fix build warning in KASLR code in boot stub
  Documentation/x86: Document TDX kernel architecture
  ACPICA: Avoid cache flush inside virtual machines
  x86/tdx/ioapic: Add shared bit for IOAPIC base address
  x86/mm: Make DMA memory shared for TD guest
  x86/mm/cpa: Add support for TDX shared memory
  x86/tdx: Make pages shared in ioremap()
  x86/topology: Disable CPU online/offline control for TDX guests
  x86/boot: Avoid #VE during boot for TDX platforms
  x86/boot: Set CR0.NE early and keep it set during the boot
  x86/acpi/x86/boot: Add multiprocessor wake-up support
  x86/boot: Add a trampoline for booting APs via firmware handoff
  x86/tdx: Wire up KVM hypercalls
  x86/tdx: Port I/O: Add early boot support
  x86/tdx: Port I/O: Add runtime hypercalls
  x86/boot: Port I/O: Add decompression-time support for TDX
  x86/boot: Port I/O: Allow to hook up alternative helpers
  ...
 2022-05-23 17:51:12 -07:00
Linus Torvalds
5b828263b1 - Simplification of the AMD MCE error severity grading logic along with 
supplying critical panic MCEs with accompanying error messages for more
 human-friendly diagnostics.
 
 - Misc fixes
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Merge tag 'ras_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 RAS updates from Borislav Petkov:

 - Simplification of the AMD MCE error severity grading logic along with
   supplying critical panic MCEs with accompanying error messages for
   more human-friendly diagnostics.

 - Misc fixes

* tag 'ras_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Add messages for panic errors in AMD's MCE grading
  x86/mce: Simplify AMD severity grading logic
  x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails
  x86/mce: Avoid unnecessary padding in struct mce_bank
 2022-05-23 17:47:19 -07:00
Bagas Sanjaya
abd4fd43f2 platform/chrome: Use imperative mood for ChromeOS ACPI sysfs ABI descriptions 
The current descriptions all begin with ("This file shows something")
clause, which is incorrect wording since these mean return value from
sysfs.

Use imperative mood ("Returns something") instead, in line with
corresponding ACPI documentation at firmware-guide/.

Cc: Benson Leung <bleung@google.com>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Tzung-Bi Shih <tzungbi@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220518083524.37380-3-bagasdotme@gmail.com
 2022-05-24 08:46:21 +08:00
Bagas Sanjaya
a6c13d87b4 platform/chrome: Use tables for values lists of ChromeOS ACPI sysfs ABI 
Stephen Rothwell reported htmldocs warning when merging chrome-platform
tree:

Documentation/ABI/testing/sysfs-driver-chromeos-acpi:2: WARNING: Unexpected indentation.
Documentation/ABI/testing/sysfs-driver-chromeos-acpi:11: WARNING: Unexpected indentation.
Documentation/ABI/testing/sysfs-driver-chromeos-acpi:22: WARNING: Unexpected indentation.
Documentation/ABI/testing/sysfs-driver-chromeos-acpi:56: WARNING: Unexpected indentation.

The warning is due to missing blank line separator surrounding values
lists.

Instead of using lists, use tables to be consistent with rest of sysfs
ABI documentation.

Link: https://lore.kernel.org/linux-next/20220516213832.19127535@canb.auug.org.au/
Fixes: 0a4cad9c11 ("platform/chrome: Add ChromeOS ACPI device driver")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benson Leung <bleung@google.com>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Tzung-Bi Shih <tzungbi@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220518083524.37380-2-bagasdotme@gmail.com
[tzungbi: fix the Fixes tag to 12-chars hash.]
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
 2022-05-24 08:44:56 +08:00
Linus Torvalds
eb39e37d5c AMD SEV-SNP support 
Add to confidential guests the necessary memory integrity protection
 against malicious hypervisor-based attacks like data replay, memory
 remapping and others, thus achieving a stronger isolation from the
 hypervisor.
 
 At the core of the functionality is a new structure called a reverse
 map table (RMP) with which the guest has a say in which pages get
 assigned to it and gets notified when a page which it owns, gets
 accessed/modified under the covers so that the guest can take an
 appropriate action.
 
 In addition, add support for the whole machinery needed to launch a SNP
 guest, details of which is properly explained in each patch.
 
 And last but not least, the series refactors and improves parts of the
 previous SEV support so that the new code is accomodated properly and
 not just bolted on.
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Merge tag 'x86_sev_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull AMD SEV-SNP support from Borislav Petkov:
 "The third AMD confidential computing feature called Secure Nested
  Paging.

  Add to confidential guests the necessary memory integrity protection
  against malicious hypervisor-based attacks like data replay, memory
  remapping and others, thus achieving a stronger isolation from the
  hypervisor.

  At the core of the functionality is a new structure called a reverse
  map table (RMP) with which the guest has a say in which pages get
  assigned to it and gets notified when a page which it owns, gets
  accessed/modified under the covers so that the guest can take an
  appropriate action.

  In addition, add support for the whole machinery needed to launch a
  SNP guest, details of which is properly explained in each patch.

  And last but not least, the series refactors and improves parts of the
  previous SEV support so that the new code is accomodated properly and
  not just bolted on"

* tag 'x86_sev_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  x86/entry: Fixup objtool/ibt validation
  x86/sev: Mark the code returning to user space as syscall gap
  x86/sev: Annotate stack change in the #VC handler
  x86/sev: Remove duplicated assignment to variable info
  x86/sev: Fix address space sparse warning
  x86/sev: Get the AP jump table address from secrets page
  x86/sev: Add missing __init annotations to SEV init routines
  virt: sevguest: Rename the sevguest dir and files to sev-guest
  virt: sevguest: Change driver name to reflect generic SEV support
  x86/boot: Put globals that are accessed early into the .data section
  x86/boot: Add an efi.h header for the decompressor
  virt: sevguest: Fix bool function returning negative value
  virt: sevguest: Fix return value check in alloc_shared_pages()
  x86/sev-es: Replace open-coded hlt-loop with sev_es_terminate()
  virt: sevguest: Add documentation for SEV-SNP CPUID Enforcement
  virt: sevguest: Add support to get extended report
  virt: sevguest: Add support to derive key
  virt: Add SEV-SNP guest driver
  x86/sev: Register SEV-SNP guest request platform device
  x86/sev: Provide support for SNP guest request NAEs
  ...
 2022-05-23 17:38:01 -07:00
Linus Torvalds
0be3ff0ccb - Switch ghes_edac to use the CPER error reporting routines and simplify 
the code considerably this way
 
 - Rip out the silly edac_align_ptr() contraption which was computing the
 size of the private structures of each driver and thus allowing for a
 one-shot memory allocation. This was clearly unnecessary and confusing
 so switch to simple and boring kmalloc* calls.
 
 - Last but not least, the usual garden variety of fixes, cleanups and
 improvements all over EDAC land
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Merge tag 'edac_updates_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC updates from Borislav Petkov:

 - Switch ghes_edac to use the CPER error reporting routines and
   simplify the code considerably this way

 - Rip out the silly edac_align_ptr() contraption which was computing
   the size of the private structures of each driver and thus allowing
   for a one-shot memory allocation. This was clearly unnecessary and
   confusing so switch to simple and boring kmalloc* calls.

 - Last but not least, the usual garden variety of fixes, cleanups and
   improvements all over EDAC land

* tag 'edac_updates_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/xgene: Fix typo processsors -> processors
  EDAC/i5100: Remove unused inline function i5100_nrecmema_dm_buf_id()
  EDAC: Use kcalloc()
  EDAC/ghes: Change ghes_hw from global to static
  EDAC/armada_xp: Use devm_platform_ioremap_resource()
  EDAC/synopsys: Add a SPDX identifier
  EDAC/synopsys: Add driver support for i.MX platforms
  EDAC/dmc520: Don't print an error for each unconfigured interrupt line
  EDAC/mc: Get rid of edac_align_ptr()
  EDAC/device: Sanitize edac_device_alloc_ctl_info() definition
  EDAC/device: Get rid of the silly one-shot memory allocation in edac_device_alloc_ctl_info()
  EDAC/pci: Get rid of the silly one-shot memory allocation in edac_pci_alloc_ctl_info()
  EDAC/mc: Get rid of silly one-shot struct allocation in edac_mc_alloc()
  efi/cper: Reformat CPER memory error location to more readable
  EDAC/ghes: Unify CPER memory error location reporting
  efi/cper: Add a cper_mem_err_status_str() to decode error description
  powerpc/85xx: Remove fsl,85... bindings
 2022-05-23 17:34:20 -07:00
Linus Torvalds
03e1ccd45f Updates for X86 PCI interrupt routing: 
- Cleanup and robustify the PCI interrupt routing table handling
    including proper range checks
 
  - Add support for Intel 82378ZB/82379AB, SiS85C497 PIRQ routers
 
  - Fix the ALi M1487 router handling
 
  - Handle the IRT routing table format in AMI BIOSes correctly
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Merge tag 'x86-irq-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 PCI irq routing updates from Thomas Gleixner:

 - Cleanup and robustify the PCI interrupt routing table handling
   including proper range checks

 - Add support for Intel 82378ZB/82379AB, SiS85C497 PIRQ routers

 - Fix the ALi M1487 router handling

 - Handle the IRT routing table format in AMI BIOSes correctly

* tag 'x86-irq-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/PCI: Fix coding style in PIRQ table verification
  x86/PCI: Fix ALi M1487 (IBC) PIRQ router link value interpretation
  x86/PCI: Add $IRT PIRQ routing table support
  x86/PCI: Handle PIRQ routing tables with no router device given
  x86/PCI: Add PIRQ routing table range checks
  x86/PCI: Add support for the SiS85C497 PIRQ router
  x86/PCI: Disambiguate SiS85C503 PIRQ router code entities
  x86/PCI: Handle IRQ swizzling with PIRQ routers
  x86/PCI: Also match function number in $PIR table
  x86/PCI: Include function number in $PIR table dump
  x86/PCI: Show the physical address of the $PIR table
 2022-05-23 17:18:25 -07:00
Linus Torvalds
6e01f86fb2 Updates for timers and timekeeping core code: 
- Expose CLOCK_TAI to instrumentation to aid with TSN debugging.
 
   - Ensure that the clockevent is stopped when there is no timer armed to
     avoid pointless wakeups.
 
   - Make the sched clock frequency handling and rounding consistent.
 
   - Provide a better debugobject hint for delayed works. The timer callback
     is always the same, which makes it difficult to identify the underlying
     work. Use the work function as a hint instead.
 
   - Move the timer specific sysctl code into the timer subsystem.
 
   - The usual set of improvements and cleanups
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Merge tag 'timers-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer and timekeeping updates from Thomas Gleixner:

 - Expose CLOCK_TAI to instrumentation to aid with TSN debugging.

 - Ensure that the clockevent is stopped when there is no timer armed to
   avoid pointless wakeups.

 - Make the sched clock frequency handling and rounding consistent.

 - Provide a better debugobject hint for delayed works. The timer
   callback is always the same, which makes it difficult to identify the
   underlying work. Use the work function as a hint instead.

 - Move the timer specific sysctl code into the timer subsystem.

 - The usual set of improvements and cleanups

* tag 'timers-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Provide a better debugobjects hint for delayed works
  time/sched_clock: Fix formatting of frequency reporting code
  time/sched_clock: Use Hz as the unit for clock rate reporting below 4kHz
  time/sched_clock: Round the frequency reported to nearest rather than down
  timekeeping: Consolidate fast timekeeper
  timekeeping: Annotate ktime_get_boot_fast_ns() with data_race()
  timers/nohz: Switch to ONESHOT_STOPPED in the low-res handler when the tick is stopped
  timekeeping: Introduce fast accessor to clock tai
  tracing/timer: Add missing argument documentation of trace points
  clocksource: Replace cpumask_weight() with cpumask_empty()
  timers: Move timer sysctl into the timer code
  clockevents: Use dedicated list iterator variable
  timers: Simplify calc_index()
  timers: Initialize base::next_expiry_recalc in timers_prepare_cpu()
 2022-05-23 17:05:55 -07:00
Linus Torvalds
fcfde8a7cf Updates for interrupt core and drivers: 
Core code:
 
     - Make the managed interrupts more robust by shutting them down in the
       core code when the assigned affinity mask does not contain online
       CPUs.
 
     - Make the irq simulator chip work on RT
 
     - A small set of cpumask and power manageent cleanups
 
   Drivers:
 
     - A set of changes which mark GPIO interrupt chips immutable to prevent
       the GPIO subsystem from modifying it under the hood. This provides
       the necessary infrastructure and converts a set of GPIO and pinctrl
       drivers over.
 
     - A set of changes to make the pseudo-NMI handling for GICv3 more
       robust: a missing barrier and consistent handling of the priority
       mask.
 
     - Another set of GICv3 improvements and fixes, but nothing outstanding
 
     - The usual set of improvements and cleanups all over the place
 
     - No new irqchip drivers and not even a new device tree binding!
       100+ interrupt chips are truly enough.
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Merge tag 'irq-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt handling updates from Thomas Gleixner:
 "Core code:

   - Make the managed interrupts more robust by shutting them down in
     the core code when the assigned affinity mask does not contain
     online CPUs.

   - Make the irq simulator chip work on RT

   - A small set of cpumask and power manageent cleanups

  Drivers:

   - A set of changes which mark GPIO interrupt chips immutable to
     prevent the GPIO subsystem from modifying it under the hood. This
     provides the necessary infrastructure and converts a set of GPIO
     and pinctrl drivers over.

   - A set of changes to make the pseudo-NMI handling for GICv3 more
     robust: a missing barrier and consistent handling of the priority
     mask.

   - Another set of GICv3 improvements and fixes, but nothing
     outstanding

   - The usual set of improvements and cleanups all over the place

   - No new irqchip drivers and not even a new device tree binding!
     100+ interrupt chips are truly enough"

* tag 'irq-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
  irqchip: Add Kconfig symbols for sunxi drivers
  irqchip/gic-v3: Fix priority mask handling
  irqchip/gic-v3: Refactor ISB + EOIR at ack time
  irqchip/gic-v3: Ensure pseudo-NMIs have an ISB between ack and handling
  genirq/irq_sim: Make the irq_work always run in hard irq context
  irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x
  irqchip/gic: Improved warning about incorrect type
  irqchip/csky: Return true/false (not 1/0) from bool functions
  irqchip/imx-irqsteer: Add runtime PM support
  irqchip/imx-irqsteer: Constify irq_chip struct
  irqchip/armada-370-xp: Enable MSI affinity configuration
  irqchip/aspeed-scu-ic: Fix irq_of_parse_and_map() return value
  irqchip/aspeed-i2c-ic: Fix irq_of_parse_and_map() return value
  irqchip/sun6i-r: Use NULL for chip_data
  irqchip/xtensa-mx: Fix initial IRQ affinity in non-SMP setup
  irqchip/exiu: Fix acknowledgment of edge triggered interrupts
  irqchip/gic-v3: Claim iomem resources
  dt-bindings: interrupt-controller: arm,gic-v3: Make the v2 compat requirements explicit
  irqchip/gic-v3: Relax polling of GIC{R,D}_CTLR.RWP
  irqchip/gic-v3: Detect LPI invalidation MMIO registers
  ...
 2022-05-23 16:58:49 -07:00
Linus Torvalds
28c8f9fe94 Updates for CPU hotplug: 
- Initialize the per CPU structures during early boot so that the state
     is consistent from the very beginning.
 
   - Make the virtualization hotplug state handling more robust and let the
     core bringup CPUs which timed out in an earlier attempt again.
 
   - Make the x86/XEN CPU state tracking consistent on a failed online
     attempt, so a consecutive bringup does not fall over the inconsistent
     state.
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Merge tag 'smp-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull CPU hotplug updates from Thomas Gleixner:

 - Initialize the per-CPU structures during early boot so that the state
   is consistent from the very beginning.

 - Make the virtualization hotplug state handling more robust and let
   the core bringup CPUs which timed out in an earlier attempt again.

 - Make the x86/xen CPU state tracking consistent on a failed online
   attempt, so a consecutive bringup does not fall over the inconsistent
   state.

* tag 'smp-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Initialise all cpuhp_cpu_state structs earlier
  cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again.
  x86/xen: Allow to retry if cpu_initialize_context() failed.
 2022-05-23 16:55:36 -07:00
Linus Torvalds
985564eb3e Trivial licensing cleanup in debugobjects 
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Merge tag 'core-debugobjects-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull debugobjects fixlet from Thomas Gleixner:
 "Trivial licensing cleanup in debugobjects"

* tag 'core-debugobjects-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Convert to SPDX license identifier
 2022-05-23 16:40:12 -07:00
Linus Torvalds
4b57dccc42 A single update for irqpoll: 
- Ensure that a raised soft interrupt is handled after pulling the
     blk_cpu_iopoll backlog from a unplugged CPU. This prevents that the CPU
     which runs that code reaches idle with soft interrupts pending.
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Merge tag 'core-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irqpoll update from Thomas Gleixner:
 "A single update for irqpoll:

  Ensure that a raised soft interrupt is handled after pulling the
  blk_cpu_iopoll backlog from a unplugged CPU. This prevents that the
  CPU which runs that code reaches idle with soft interrupts pending"

* tag 'core-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lib/irq_poll: Prevent softirq pending leak in irq_poll_cpu_dead()
 2022-05-23 16:37:35 -07:00
Jakub Kicinski
1ef0736c07 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 
Daniel Borkmann says:

====================
pull-request: bpf-next 2022-05-23

We've added 113 non-merge commits during the last 26 day(s) which contain
a total of 121 files changed, 7425 insertions(+), 1586 deletions(-).

The main changes are:

1) Speed up symbol resolution for kprobes multi-link attachments, from Jiri Olsa.

2) Add BPF dynamic pointer infrastructure e.g. to allow for dynamically sized ringbuf
   reservations without extra memory copies, from Joanne Koong.

3) Big batch of libbpf improvements towards libbpf 1.0 release, from Andrii Nakryiko.

4) Add BPF link iterator to traverse links via seq_file ops, from Dmitrii Dolgov.

5) Add source IP address to BPF tunnel key infrastructure, from Kaixi Fan.

6) Refine unprivileged BPF to disable only object-creating commands, from Alan Maguire.

7) Fix JIT blinding of ld_imm64 when they point to subprogs, from Alexei Starovoitov.

8) Add BPF access to mptcp_sock structures and their meta data, from Geliang Tang.

9) Add new BPF helper for access to remote CPU's BPF map elements, from Feng Zhou.

10) Allow attaching 64-bit cookie to BPF link of fentry/fexit/fmod_ret, from Kui-Feng Lee.

11) Follow-ups to typed pointer support in BPF maps, from Kumar Kartikeya Dwivedi.

12) Add busy-poll test cases to the XSK selftest suite, from Magnus Karlsson.

13) Improvements in BPF selftest test_progs subtest output, from Mykola Lysenko.

14) Fill bpf_prog_pack allocator areas with illegal instructions, from Song Liu.

15) Add generic batch operations for BPF map-in-map cases, from Takshak Chahande.

16) Make bpf_jit_enable more user friendly when permanently on 1, from Tiezhu Yang.

17) Fix an array overflow in bpf_trampoline_get_progs(), from Yuntao Wang.

====================

Link: https://lore.kernel.org/r/20220523223805.27931-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 16:07:14 -07:00
Jakub Kicinski
9fa87dd232 linux-can-next-for-5.19-20220523 
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Merge tag 'linux-can-next-for-5.19-20220523' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2022-05-23

this is a pull request of 3 patches for net-next/master.

The first patch is by Julia Lawall and fixes a typo in the peak_usb
driver.

Jakub Kicinski contributes a patch for the kvaser_usb driver to
silence a GCC 12 -Warray-bounds warning.

The last patch is by me, target the ctucanfd platform driver and adds
a missing dependency to HAS_IOMEM.

* tag 'linux-can-next-for-5.19-20220523' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
  can: ctucanfd: platform: add missing dependency to HAS_IOMEM
  can: kvaser_usb: silence a GCC 12 -Warray-bounds warning
  can: peak_usb: fix typo in comment
====================

Link: https://lore.kernel.org/r/20220523201045.1708855-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 15:59:42 -07:00
Julia Lawall
d036d915b6 of/irq: fix typo in comment 
Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220521111145.81697-59-Julia.Lawall@inria.fr
 2022-05-23 16:37:01 -05:00
Linus Torvalds
140e40e39a zonefs changes for 5.19-rc1 
This set of patches improve zonefs open sequential file accounting and
 adds accounting for active sequential files to allow the user to handle
 the maximum number of active zones of an NVMe ZNS drive. sysfs
 attributes for both open and active sequential files are also added to
 facilitate access to this information from applications without
 resorting to inspecting the block device limits.
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Merge tag 'zonefs-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs

Pull zonefs updates from Damien Le Moal:
 "This improves zonefs open sequential file accounting and adds
  accounting for active sequential files to allow the user to handle the
  maximum number of active zones of an NVMe ZNS drive.

  sysfs attributes for both open and active sequential files are also
  added to facilitate access to this information from applications
  without resorting to inspecting the block device limits"

* tag 'zonefs-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  documentation: zonefs: Document sysfs attributes
  documentation: zonefs: Cleanup the mount options section
  zonefs: Add active seq file accounting
  zonefs: Export open zone resource information through sysfs
  zonefs: Always do seq file write open accounting
  zonefs: Rename super block information fields
  zonefs: Fix management of open zones
  zonefs: Clear inode information flags on inode creation
 2022-05-23 14:36:45 -07:00
Jakub Kicinski
b1e6738a21 bluetooth-next pull request for net-next: 
- Add support for Realtek 8761BUV
  - Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
  - Add support for RTL8852C
  - Add a new PID/VID 0489/e0c8 for MT7921
  - Add support for Qualcomm WCN785x
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Merge tag 'for-net-next-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

Luiz Augusto von Dentz says:

====================
bluetooth-next pull request for net-next:

 - Add support for Realtek 8761BUV
 - Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
 - Add support for RTL8852C
 - Add a new PID/VID 0489/e0c8 for MT7921
 - Add support for Qualcomm WCN785x

* tag 'for-net-next-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (26 commits)
  Bluetooth: hci_sync: use hci_skb_event() helper
  Bluetooth: eir: Add helpers for managing service data
  Bluetooth: hci_sync: Fix attempting to suspend with unfiltered passive scan
  Bluetooth: MGMT: Add conditions for setting HCI_CONN_FLAG_REMOTE_WAKEUP
  Bluetooth: btmtksdio: fix the reset takes too long
  Bluetooth: btmtksdio: fix possible FW initialization failure
  Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
  Bluetooth: btbcm: Add entry for BCM4373A0 UART Bluetooth
  Bluetooth: btusb: Add a new PID/VID 0489/e0c8 for MT7921
  Bluetooth: btusb: Add 0x0bda:0x8771 Realtek 8761BUV devices
  Bluetooth: btusb: Set HCI_QUIRK_BROKEN_ERR_DATA_REPORTING for QCA
  Bluetooth: core: Fix missing power_on work cancel on HCI close
  Bluetooth: btusb: add support for Qualcomm WCN785x
  Bluetooth: protect le accept and resolv lists with hdev->lock
  Bluetooth: use hdev lock for accept_list and reject_list in conn req
  Bluetooth: use hdev lock in activate_scan for hci_is_adv_monitoring
  Bluetooth: btrtl: Add support for RTL8852C
  Bluetooth: btusb: Set HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN for QCA
  Bluetooth: Print broken quirks
  Bluetooth: HCI: Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
  ...
====================

Link: https://lore.kernel.org/r/20220523204151.3327345-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 14:36:36 -07:00
Jakub Kicinski
7fb0269720 bluetooth pull request for net: 
- Fix crash when an LE Connection fails to be established.
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Merge tag 'for-net-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Luiz Augusto von Dentz says:

====================
bluetooth pull request for net:

 - Fix crash when an LE Connection fails to be established.

* tag 'for-net-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: hci_conn: Fix hci_connect_le_sync
====================

Link: https://lore.kernel.org/r/20220523200349.3322806-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 14:33:38 -07:00
Andrii Nakryiko
608b638ebf Merge branch 'Dynamic pointers' 
Joanne Koong says:

====================

This patchset implements the basics of dynamic pointers in bpf.

A dynamic pointer (struct bpf_dynptr) is a pointer that stores extra metadata
alongside the address it points to. This abstraction is useful in bpf given
that every memory access in a bpf program must be safe. The verifier and bpf
helper functions can use the metadata to enforce safety guarantees for things
such as dynamically sized strings and kernel heap allocations.

From the program side, the bpf_dynptr is an opaque struct and the verifier
will enforce that its contents are never written to by the program.
It can only be written to through specific bpf helper functions.

There are several uses cases for dynamic pointers in bpf programs. Some
examples include: dynamically sized ringbuf reservations without extra
memcpys, dynamic string parsing and memory comparisons, dynamic memory
allocations that can be persisted in maps, and dynamic + ergonomic parsing of
sk_buff and xdp_md packet data.

At a high-level, the patches are as follows:
1/6 - Adds verifier support for dynptrs
2/6 - Adds bpf_dynptr_from_mem (local dynptr)
3/6 - Adds dynptr support for ring buffers
4/6 - Adds bpf_dynptr_read and bpf_dynptr_write
5/6 - Adds dynptr data slices (ptr to the dynptr data)
6/6 - Tests to check that the verifier rejects invalid cases and passes valid ones

This is the first dynptr patchset in a larger series. The next series of
patches will add dynptrs that support dynamic memory allocations that can also
be persisted in maps, support for parsing packet data through dynptrs, convenience
helpers for using dynptrs as iterators, and more helper functions for interacting
with strings and memory dynamically.

Changelog:
----------
v5 -> v6:
v5:
https://lore.kernel.org/bpf/20220520044245.3305025-1-joannelkoong@gmail.com/
* enforce PTR_TO_MAP_VALUE for bpf_dynptr_from_mem data in check_helper_call
instead of using DYNPTR_TYPE_LOCAL when checking func arg compatiblity
* remove MEM_DYNPTR modifier

v4 -> v5:
v4:
https://lore.kernel.org/bpf/20220509224257.3222614-1-joannelkoong@gmail.com/
* Remove malloc dynptr; this will be part of the 2nd patchset while we
figure out memory accounting
* For data slices, only set the register's ref_obj_id to dynptr_id (Alexei)
* Tidying (eg remove "inline", move offset checking to "check_func_arg_reg_off")
(David)
* Add a few new test cases, remove malloc-only ones.

v3 -> v4:
v3:
https://lore.kernel.org/bpf/20220428211059.4065379-1-joannelkoong@gmail.com/
1/6 - Change mem ptr + size check to use more concise inequality expression
(David + Andrii)
2/6 - Add check for meta->uninit_dynptr_regno not already set (Andrii)
      Move DYNPTR_TYPE_FLAG_MASK to include/linux/bpf.h (Andrii)
3/6 - Remove four underscores for invoking BPF_CALL (Andrii)
      Add __BPF_TYPE_FLAG_MAX and use it for __BPF_TYPE_LAST_FLAG (Andrii)
4/6 - Fix capacity to be bpf_dynptr size value in check_off_len (Andrii)
      Change -EINVAL to -E2BIG if len + offset is out of bounds (Andrii)
5/6 - Add check for only 1 dynptr arg for dynptr data function (Andrii)
6/6 - For ringbuf map, set max_entries from userspace (Andrii)
      Use err ?: ... for interactring with dynptr APIs (Andrii)
      Define array_map2 for add_dynptr_to_map2 test where value is a struct
with an embedded dynptr
      Remove ref id from missing_put_callback message, since on different
environments, ref id is not always = 1

v2 -> v3:
v2:
https://lore.kernel.org/bpf/20220416063429.3314021-1-joannelkoong@gmail.com/
* Reorder patches (move ringbuffer patch to be right after the verifier +
* malloc
dynptr patchset)
* Remove local type dynptrs (Andrii + Alexei)
* Mark stack slot as STACK_MISC after any writes into a dynptr instead of
* explicitly prohibiting writes (Alexei)
* Pass number of slots, not memory size to is_spi_bounds_valid (Kumar)
* Check reference leaks by adding dynptr id to state->refs instead of checking
stack slots (Alexei)

v1 -> v2:
v1: https://lore.kernel.org/bpf/20220402015826.3941317-1-joannekoong@fb.com/
1/7 -
    * Remove ARG_PTR_TO_MAP_VALUE_UNINIT alias and use
      ARG_PTR_TO_MAP_VALUE | MEM_UNINIT directly (Andrii)
    * Drop arg_type_is_mem_ptr() wrapper function (Andrii)
2/7 -
    * Change name from MEM_RELEASE to OBJ_RELEASE (Andrii)
    * Use meta.release_ref instead of ref_obj_id != 0 to determine whether
      to release reference (Kumar)
    * Drop type_is_release_mem() wrapper function (Andrii)
3/7 -
    * Add checks for nested dynptrs edge-cases, which could lead to corrupt
    * writes of the dynptr stack variable.
    * Add u64 flags to bpf_dynptr_from_mem() and bpf_dynptr_alloc() (Andrii)
    * Rename from bpf_malloc/bpf_free to bpf_dynptr_alloc/bpf_dynptr_put
      (Alexei)
    * Support alloc flag __GFP_ZERO (Andrii)
    * Reserve upper 8 bits in dynptr size and offset fields instead of
      reserving just the upper 4 bits (Andrii)
    * Allow dynptr zero-slices (Andrii)
    * Use the highest bit for is_rdonly instead of the 28th bit (Andrii)
    * Rename check_* functions to is_* functions for better readability
      (Andrii)
    * Add comment for code that checks the spi bounds (Andrii)
4/7 -
    * Fix doc description for bpf_dynpt_read (Toke)
    * Move bpf_dynptr_check_off_len() from function patch 1 to here (Andrii)
5/7 -
    * When finding the id for the dynptr to associate the data slice with,
      look for dynptr arg instead of assuming it is BPF_REG_1.
6/7 -
    * Add __force when casting from unsigned long to void * (kernel test
    * robot)
    * Expand on docs for ringbuf dynptr APIs (Andrii)
7/7 -
    * Use table approach for defining test programs and error messages
    * (Andrii)
    * Print out full log if there’s an error (Andrii)
    * Use bpf_object__find_program_by_name() instead of specifying
      program name as a string (Andrii)
    * Add 6 extra cases: invalid_nested_dynptrs1, invalid_nested_dynptrs2,
      invalid_ref_mem1, invalid_ref_mem2, zero_slice_access,
      and test_alloc_zero_bytes
    * Add checking for edge cases (eg allocing with invalid flags)
====================

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
 2022-05-23 14:31:29 -07:00
Joanne Koong
0cf7052a55 selftests/bpf: Dynptr tests 
This patch adds tests for dynptrs, which include cases that the
verifier needs to reject (for example, a bpf_ringbuf_reserve_dynptr
without a corresponding bpf_ringbuf_submit/discard_dynptr) as well
as cases that should successfully pass.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-7-joannelkoong@gmail.com
 2022-05-23 14:31:29 -07:00
Joanne Koong
34d4ef5775 bpf: Add dynptr data slices 
This patch adds a new helper function

void *bpf_dynptr_data(struct bpf_dynptr *ptr, u32 offset, u32 len);

which returns a pointer to the underlying data of a dynptr. *len*
must be a statically known value. The bpf program may access the returned
data slice as a normal buffer (eg can do direct reads and writes), since
the verifier associates the length with the returned pointer, and
enforces that no out of bounds accesses occur.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-6-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
13bbbfbea7 bpf: Add bpf_dynptr_read and bpf_dynptr_write 
This patch adds two helper functions, bpf_dynptr_read and
bpf_dynptr_write:

long bpf_dynptr_read(void *dst, u32 len, struct bpf_dynptr *src, u32 offset);

long bpf_dynptr_write(struct bpf_dynptr *dst, u32 offset, void *src, u32 len);

The dynptr passed into these functions must be valid dynptrs that have
been initialized.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-5-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
bc34dee65a bpf: Dynptr support for ring buffers 
Currently, our only way of writing dynamically-sized data into a ring
buffer is through bpf_ringbuf_output but this incurs an extra memcpy
cost. bpf_ringbuf_reserve + bpf_ringbuf_commit avoids this extra
memcpy, but it can only safely support reservation sizes that are
statically known since the verifier cannot guarantee that the bpf
program won’t access memory outside the reserved space.

The bpf_dynptr abstraction allows for dynamically-sized ring buffer
reservations without the extra memcpy.

There are 3 new APIs:

long bpf_ringbuf_reserve_dynptr(void *ringbuf, u32 size, u64 flags, struct bpf_dynptr *ptr);
void bpf_ringbuf_submit_dynptr(struct bpf_dynptr *ptr, u64 flags);
void bpf_ringbuf_discard_dynptr(struct bpf_dynptr *ptr, u64 flags);

These closely follow the functionalities of the original ringbuf APIs.
For example, all ringbuffer dynptrs that have been reserved must be
either submitted or discarded before the program exits.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-4-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
263ae152e9 bpf: Add bpf_dynptr_from_mem for local dynptrs 
This patch adds a new api bpf_dynptr_from_mem:

long bpf_dynptr_from_mem(void *data, u32 size, u64 flags, struct bpf_dynptr *ptr);

which initializes a dynptr to point to a bpf program's local memory. For now
only local memory that is of reg type PTR_TO_MAP_VALUE is supported.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-3-joannelkoong@gmail.com
 2022-05-23 14:31:24 -07:00
Joanne Koong
97e03f5210 bpf: Add verifier support for dynptrs 
This patch adds the bulk of the verifier work for supporting dynamic
pointers (dynptrs) in bpf.

A bpf_dynptr is opaque to the bpf program. It is a 16-byte structure
defined internally as:

struct bpf_dynptr_kern {
    void *data;
    u32 size;
    u32 offset;
} __aligned(8);

The upper 8 bits of *size* is reserved (it contains extra metadata about
read-only status and dynptr type). Consequently, a dynptr only supports
memory less than 16 MB.

There are different types of dynptrs (eg malloc, ringbuf, ...). In this
patchset, the most basic one, dynptrs to a bpf program's local memory,
is added. For now only local memory that is of reg type PTR_TO_MAP_VALUE
is supported.

In the verifier, dynptr state information will be tracked in stack
slots. When the program passes in an uninitialized dynptr
(ARG_PTR_TO_DYNPTR | MEM_UNINIT), the stack slots corresponding
to the frame pointer where the dynptr resides at are marked
STACK_DYNPTR. For helper functions that take in initialized dynptrs (eg
bpf_dynptr_read + bpf_dynptr_write which are added later in this
patchset), the verifier enforces that the dynptr has been initialized
properly by checking that their corresponding stack slots have been
marked as STACK_DYNPTR.

The 6th patch in this patchset adds test cases that the verifier should
successfully reject, such as for example attempting to use a dynptr
after doing a direct write into it inside the bpf program.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-2-joannelkoong@gmail.com
 2022-05-23 14:30:17 -07:00