Pull kvm fixes from Paolo Bonzini:
 "This is a bit on the large side, mostly due to two changes:

   - Changes to disable some broken PMU virtualization (see below for
     details under "x86 PMU")

   - Clean up SVM's enter/exit assembly code so that it can be compiled
     without OBJECT_FILES_NON_STANDARD. This fixes a warning "Unpatched
     return thunk in use. This should not happen!" when running KVM
     selftests.

  Everything else is small bugfixes and selftest changes:

   - Fix a mostly benign bug in the gfn_to_pfn_cache infrastructure
     where KVM would allow userspace to refresh the cache with a bogus
     GPA. The bug has existed for quite some time, but was exposed by a
     new sanity check added in 6.9 (to ensure a cache is either
     GPA-based or HVA-based).

   - Drop an unused param from gfn_to_pfn_cache_invalidate_start() that
     got left behind during a 6.9 cleanup.

   - Fix a math goof in x86's hugepage logic for
     KVM_SET_MEMORY_ATTRIBUTES that results in an array overflow
     (detected by KASAN).

   - Fix a bug where KVM incorrectly clears root_role.direct when
     userspace sets guest CPUID.

   - Fix a dirty logging bug in the where KVM fails to write-protect
     SPTEs used by a nested guest, if KVM is using Page-Modification
     Logging and the nested hypervisor is NOT using EPT.

  x86 PMU:

   - Drop support for virtualizing adaptive PEBS, as KVM's
     implementation is architecturally broken without an obvious/easy
     path forward, and because exposing adaptive PEBS can leak host LBRs
     to the guest, i.e. can leak host kernel addresses to the guest.

   - Set the enable bits for general purpose counters in
     PERF_GLOBAL_CTRL at RESET time, as done by both Intel and AMD
     processors.

   - Disable LBR virtualization on CPUs that don't support LBR
     callstacks, as KVM unconditionally uses
     PERF_SAMPLE_BRANCH_CALL_STACK when creating the perf event, and
     would fail on such CPUs.

  Tests:

   - Fix a flaw in the max_guest_memory selftest that results in it
     exhausting the supply of ucall structures when run with more than
     256 vCPUs.

   - Mark KVM_MEM_READONLY as supported for RISC-V in
     set_memory_region_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (30 commits)
  KVM: Drop unused @may_block param from gfn_to_pfn_cache_invalidate_start()
  KVM: selftests: Add coverage of EPT-disabled to vmx_dirty_log_test
  KVM: x86/mmu: Fix and clarify comments about clearing D-bit vs. write-protecting
  KVM: x86/mmu: Remove function comments above clear_dirty_{gfn_range,pt_masked}()
  KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status
  KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID update
  KVM: VMX: Disable LBR virtualization if the CPU doesn't support LBR callstacks
  perf/x86/intel: Expose existence of callback support to KVM
  KVM: VMX: Snapshot LBR capabilities during module initialization
  KVM: x86/pmu: Do not mask LVTPC when handling a PMI on AMD platforms
  KVM: x86: Snapshot if a vCPU's vendor model is AMD vs. Intel compatible
  KVM: x86: Stop compiling vmenter.S with OBJECT_FILES_NON_STANDARD
  KVM: SVM: Create a stack frame in __svm_sev_es_vcpu_run()
  KVM: SVM: Save/restore args across SEV-ES VMRUN via host save area
  KVM: SVM: Save/restore non-volatile GPRs in SEV-ES VMRUN via host save area
  KVM: SVM: Clobber RAX instead of RBX when discarding spec_ctrl_intercepted
  KVM: SVM: Drop 32-bit "support" from __svm_sev_es_vcpu_run()
  KVM: SVM: Wrap __svm_sev_es_vcpu_run() with #ifdef CONFIG_KVM_AMD_SEV
  KVM: SVM: Create a stack frame in __svm_vcpu_run() for unwinding
  KVM: SVM: Remove a useless zeroing of allocated memory
  ...

Pull powerpc fixes from Michael Ellerman:

 - Fix wireguard loading failure on pre-Power10 due to Power10 crypto
   routines

 - Fix papr-vpd selftest failure due to missing variable initialization

 - Avoid unnecessary get/put in spapr_tce_platform_iommu_attach_dev()

Thanks to Geetika Moolchandani, Jason Gunthorpe, Michal Suchánek, Nathan
Lynch, and Shivaprasad G Bhat.

* tag 'powerpc-6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  selftests/powerpc/papr-vpd: Fix missing variable initialization
  powerpc/crypto/chacha-p10: Fix failure on non Power10
  powerpc/iommu: Refactor spapr_tce_platform_iommu_attach_dev()

Pull iommufd fixes from Jason Gunthorpe:
 "Two fixes for the selftests:

   - CONFIG_IOMMUFD_TEST needs CONFIG_IOMMUFD_DRIVER to work

   - The kconfig fragment sshould include fault injection so the fault
     injection test can work"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommufd: Add config needed for iommufd_fail_nth
  iommufd: Add missing IOMMUFD_DRIVER kconfig for the selftest

Pull networking fixes from Jakub Kicinski:
 "A little calmer than usual, probably just the timing of sub-tree PRs.

  Including fixes from netfilter.

  Current release - regressions:

   - inet: bring NLM_DONE out to a separate recv() again, fix user space
     which assumes multiple recv()s will happen and gets blocked forever

   - drv: mlx5:
       - restore mistakenly dropped parts in register devlink flow
       - use channel mdev reference instead of global mdev instance for
         coalescing
       - acquire RTNL lock before RQs/SQs activation/deactivation

  Previous releases - regressions:

   - net: change maximum number of UDP segments to 128, fix virtio
     compatibility with Windows peers

   - usb: ax88179_178a: avoid writing the mac address before first
     reading

  Previous releases - always broken:

   - sched: fix mirred deadlock on device recursion

   - netfilter:
       - br_netfilter: skip conntrack input hook for promisc packets
       - fixes removal of duplicate elements in the pipapo set backend
       - various fixes for abort paths and error handling

   - af_unix: don't peek OOB data without MSG_OOB

   - drv: flower: fix fragment flags handling in multiple drivers

   - drv: ravb: fix jumbo frames and packet stats accounting

  Misc:

   - kselftest_harness: fix Clang warning about zero-length format

   - tun: limit printing rate when illegal packet received by tun dev"

* tag 'net-6.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (46 commits)
  net: ethernet: ti: am65-cpsw-nuss: cleanup DMA Channels before using them
  net: usb: ax88179_178a: avoid writing the mac address before first reading
  net: ravb: Fix RX byte accounting for jumbo packets
  net: ravb: Fix GbEth jumbo packet RX checksum handling
  net: ravb: Allow RX loop to move past DMA mapping errors
  net: ravb: Count packets instead of descriptors in R-Car RX path
  net: ethernet: mtk_eth_soc: fix WED + wifi reset
  net:usb:qmi_wwan: support Rolling modules
  selftests: kselftest_harness: fix Clang warning about zero-length format
  net/sched: Fix mirred deadlock on device recursion
  netfilter: nf_tables: fix memleak in map from abort path
  netfilter: nf_tables: restore set elements when delete set fails
  netfilter: nf_tables: missing iterator type in lookup walk
  s390/ism: Properly fix receive message buffer allocation
  net: dsa: mt7530: fix port mirroring for MT7988 SoC switch
  net: dsa: mt7530: fix mirroring frames received on local port
  tun: limit printing rate when illegal packet received by tun dev
  ice: Fix checking for unsupported keys on non-tunnel device
  ice: tc: allow zero flags in parsing tc flower
  ice: tc: check src_vsi in case of traffic from VF
  ...

Apparently it's more legal to pass the format as NULL, than
it is to use an empty string. Clang complains about empty
formats:

./../kselftest_harness.h:1207:30: warning: format string is empty
[-Wformat-zero-length]
 1207 |            diagnostic ? "%s" : "", diagnostic);
      |                                 ^~
1 warning generated.

Reported-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/all/20240409224256.1581292-1-seanjc@google.com
Fixes: 378193eff339 ("selftests: kselftest_harness: let PASS / FAIL provide diagnostic")
Tested-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240416151048.1682352-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

On my new laptop with packages from nixos-unstable, gcc 12.3.0 produces
> lib/setup.c: In function ‘__test_msg’:
> lib/setup.c:20:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    20 |         ksft_print_msg(buf);
>       |         ^~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_ok’:
> lib/setup.c:26:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    26 |         ksft_test_result_pass(buf);
>       |         ^~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_fail’:
> lib/setup.c:32:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    32 |         ksft_test_result_fail(buf);
>       |         ^~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_xfail’:
> lib/setup.c:38:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    38 |         ksft_test_result_xfail(buf);
>       |         ^~~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_error’:
> lib/setup.c:44:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    44 |         ksft_test_result_error(buf);
>       |         ^~~~~~~~~~~~~~~~~~~~~~
> lib/setup.c: In function ‘__test_skip’:
> lib/setup.c:50:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    50 |         ksft_test_result_skip(buf);
>       |         ^~~~~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors

As the buffer was already pre-printed into, print it as a string
rather than a format-string.

Fixes: cfbab37b3da0 ("selftests/net: Add TCP-AO library")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

On my new laptop with packages from nixos-unstable, gcc 12.3.0 produces:
> lib/proc.c: In function ‘netstat_read_type’:
> lib/proc.c:89:9: error: format not a string literal and no format arguments [-Werror=format-security]
>    89 |         if (fscanf(fnetstat, type->header_name) == EOF)
>       |         ^~
> cc1: some warnings being treated as errors

Here the selftests lib parses header name, while expectes non-space word
ending with a column.

Fixes: cfbab37b3da0 ("selftests/net: Add TCP-AO library")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

The structure is on the stack and has to be zero-initialized as
the kernel checks for:
>	if (in.reserved != 0 || in.reserved2 != 0)
>		return -EINVAL;

Fixes: b26660531cf6 ("selftests/net: Add test for TCP-AO add setsockopt() command")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Currently, "active reset" cases are flaky, because select() is called
for 3 sockets, while only 2 are expected to receive RST.
The idea of the third socket was to get into request_sock_queue,
but the test mistakenly attempted to connect() after the listener
socket was shut down.

Repair this test, it's important to check the different kernel
code-paths for signing RST TCP-AO segments.

Fixes: c6df7b2361d7 ("selftests/net: Add TCP-AO RST test")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Pull kselftest fixes from Shuah Khan:
 "A fix to kselftest harness to prevent infinite loop triggered in an
  assert in FIXTURE_TEARDOWN and a fix to a problem seen in being able
  to stop subsystem-enable tests when sched events are being traced"

* tag 'linux_kselftest-fixes-6.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/harness: Prevent infinite loop due to Assert in FIXTURE_TEARDOWN
  selftests/ftrace: Limit length in subsystem-enable tests