This is the start of the stable review cycle for the 5.15.40 release. There are 21 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

Responses should be made by Sun, 15 May 2022 14:22:19 +0000. Anything received after that time might be too late.

The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y and the diffstat can be found below.

thanks,

greg k-h

------------- Pseudo-Shortlog of commits:

Greg Kroah-Hartman gregkh@linuxfoundation.org Linux 5.15.40-rc1

Peter Xu peterx@redhat.com mm: fix invalid page pointer returned with FOLL_PIN gups

Miaohe Lin linmiaohe@huawei.com mm/mlock: fix potential imbalanced rlimit ucounts adjustment

Naoya Horiguchi naoya.horiguchi@nec.com mm/hwpoison: fix error page recovered but reported "not recovered"

Muchun Song songmuchun@bytedance.com mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()

Muchun Song songmuchun@bytedance.com mm: shmem: fix missing cache flush in shmem_mfill_atomic_pte()

Muchun Song songmuchun@bytedance.com mm: hugetlb: fix missing cache flush in copy_huge_page_from_user()

Muchun Song songmuchun@bytedance.com mm: fix missing cache flush for all tail pages of compound page

Jan Kara jack@suse.cz udf: Avoid using stale lengthOfImpUse

Gleb Fotengauer-Malinovskiy glebfm@altlinux.org rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition

Itay Iellin ieitayie@gmail.com Bluetooth: Fix the creation of hdev->name

Peter Zijlstra peterz@infradead.org objtool: Fix SLS validation for kcov tail-call replacement

Peter Zijlstra peterz@infradead.org crypto: x86/poly1305 - Fixup SLS

Borislav Petkov bp@suse.de kvm/emulate: Fix SETcc emulation function offsets with SLS

Arnaldo Carvalho de Melo acme@redhat.com tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'

Peter Zijlstra peterz@infradead.org x86: Add straight-line-speculation mitigation

Masahiro Yamada masahiroy@kernel.org kbuild: move objtool_args back to scripts/Makefile.build

Peter Zijlstra peterz@infradead.org x86/alternative: Relax text_poke_bp() constraint

Peter Zijlstra peterz@infradead.org objtool: Add straight-line-speculation validation

Peter Zijlstra peterz@infradead.org x86: Prepare inline-asm for straight-line-speculation

Peter Zijlstra peterz@infradead.org x86: Prepare asm files for straight-line-speculation

Peter Zijlstra peterz@infradead.org x86/lib/atomic64_386_32: Rename things

-------------

Diffstat:

Makefile | 4 +- arch/x86/Kconfig | 12 ++++ arch/x86/Makefile | 4 ++ arch/x86/boot/compressed/efi_thunk_64.S | 2 +- arch/x86/boot/compressed/head_64.S | 8 +-- arch/x86/boot/compressed/mem_encrypt.S | 6 +- arch/x86/crypto/aegis128-aesni-asm.S | 48 +++++++-------- arch/x86/crypto/aes_ctrby8_avx-x86_64.S | 2 +- arch/x86/crypto/aesni-intel_asm.S | 56 ++++++++--------- arch/x86/crypto/aesni-intel_avx-x86_64.S | 40 ++++++------- arch/x86/crypto/blake2s-core.S | 4 +- arch/x86/crypto/blowfish-x86_64-asm_64.S | 12 ++-- arch/x86/crypto/camellia-aesni-avx-asm_64.S | 14 ++--- arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 14 ++--- arch/x86/crypto/camellia-x86_64-asm_64.S | 12 ++-- arch/x86/crypto/cast5-avx-x86_64-asm_64.S | 12 ++-- arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/chacha-avx2-x86_64.S | 6 +- arch/x86/crypto/chacha-avx512vl-x86_64.S | 6 +- arch/x86/crypto/chacha-ssse3-x86_64.S | 8 +-- arch/x86/crypto/crc32-pclmul_asm.S | 2 +- arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 2 +- arch/x86/crypto/crct10dif-pcl-asm_64.S | 2 +- arch/x86/crypto/des3_ede-asm_64.S | 4 +- arch/x86/crypto/ghash-clmulni-intel_asm.S | 6 +- arch/x86/crypto/nh-avx2-x86_64.S | 2 +- arch/x86/crypto/nh-sse2-x86_64.S | 2 +- arch/x86/crypto/poly1305-x86_64-cryptogams.pl | 38 ++++++------ arch/x86/crypto/serpent-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/serpent-avx2-asm_64.S | 10 ++-- arch/x86/crypto/serpent-sse2-i586-asm_32.S | 6 +- arch/x86/crypto/serpent-sse2-x86_64-asm_64.S | 6 +- arch/x86/crypto/sha1_avx2_x86_64_asm.S | 2 +- arch/x86/crypto/sha1_ni_asm.S | 2 +- arch/x86/crypto/sha1_ssse3_asm.S | 2 +- arch/x86/crypto/sha256-avx-asm.S | 2 +- arch/x86/crypto/sha256-avx2-asm.S | 2 +- arch/x86/crypto/sha256-ssse3-asm.S | 2 +- arch/x86/crypto/sha256_ni_asm.S | 2 +- arch/x86/crypto/sha512-avx-asm.S | 2 +- arch/x86/crypto/sha512-avx2-asm.S | 2 +- arch/x86/crypto/sha512-ssse3-asm.S | 2 +- arch/x86/crypto/sm4-aesni-avx-asm_64.S | 12 ++-- arch/x86/crypto/sm4-aesni-avx2-asm_64.S | 8 +-- arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/twofish-i586-asm_32.S | 4 +- arch/x86/crypto/twofish-x86_64-asm_64-3way.S | 6 +- arch/x86/crypto/twofish-x86_64-asm_64.S | 4 +- arch/x86/entry/entry_32.S | 2 +- arch/x86/entry/entry_64.S | 10 ++-- arch/x86/entry/thunk_32.S | 2 +- arch/x86/entry/thunk_64.S | 2 +- arch/x86/entry/vdso/vdso32/system_call.S | 2 +- arch/x86/entry/vdso/vsgx.S | 2 +- arch/x86/entry/vsyscall/vsyscall_emu_64.S | 6 +- arch/x86/include/asm/linkage.h | 14 +++++ arch/x86/include/asm/paravirt.h | 2 +- arch/x86/include/asm/qspinlock_paravirt.h | 4 +- arch/x86/include/asm/static_call.h | 2 +- arch/x86/kernel/acpi/wakeup_32.S | 6 +- arch/x86/kernel/alternative.c | 51 +++++++++++----- arch/x86/kernel/ftrace.c | 2 +- arch/x86/kernel/ftrace_32.S | 6 +- arch/x86/kernel/ftrace_64.S | 10 ++-- arch/x86/kernel/head_32.S | 2 +- arch/x86/kernel/irqflags.S | 2 +- arch/x86/kernel/kprobes/core.c | 2 +- arch/x86/kernel/paravirt.c | 2 +- arch/x86/kernel/relocate_kernel_32.S | 10 ++-- arch/x86/kernel/relocate_kernel_64.S | 10 ++-- arch/x86/kernel/sev_verify_cbit.S | 2 +- arch/x86/kernel/static_call.c | 5 +- arch/x86/kernel/verify_cpu.S | 4 +- arch/x86/kvm/emulate.c | 23 +++++-- arch/x86/kvm/svm/vmenter.S | 4 +- arch/x86/kvm/vmx/vmenter.S | 14 ++--- arch/x86/lib/atomic64_386_32.S | 86 +++++++++++++++------------ arch/x86/lib/atomic64_cx8_32.S | 16 ++--- arch/x86/lib/checksum_32.S | 8 +-- arch/x86/lib/clear_page_64.S | 6 +- arch/x86/lib/cmpxchg16b_emu.S | 4 +- arch/x86/lib/cmpxchg8b_emu.S | 4 +- arch/x86/lib/copy_mc_64.S | 6 +- arch/x86/lib/copy_page_64.S | 4 +- arch/x86/lib/copy_user_64.S | 12 ++-- arch/x86/lib/csum-copy_64.S | 2 +- arch/x86/lib/error-inject.c | 3 +- arch/x86/lib/getuser.S | 22 +++---- arch/x86/lib/hweight.S | 6 +- arch/x86/lib/iomap_copy_64.S | 2 +- arch/x86/lib/memcpy_64.S | 12 ++-- arch/x86/lib/memmove_64.S | 4 +- arch/x86/lib/memset_64.S | 6 +- arch/x86/lib/msr-reg.S | 4 +- arch/x86/lib/putuser.S | 6 +- arch/x86/lib/retpoline.S | 4 +- arch/x86/math-emu/div_Xsig.S | 2 +- arch/x86/math-emu/div_small.S | 2 +- arch/x86/math-emu/mul_Xsig.S | 6 +- arch/x86/math-emu/polynom_Xsig.S | 2 +- arch/x86/math-emu/reg_norm.S | 6 +- arch/x86/math-emu/reg_round.S | 2 +- arch/x86/math-emu/reg_u_add.S | 2 +- arch/x86/math-emu/reg_u_div.S | 2 +- arch/x86/math-emu/reg_u_mul.S | 2 +- arch/x86/math-emu/reg_u_sub.S | 2 +- arch/x86/math-emu/round_Xsig.S | 4 +- arch/x86/math-emu/shr_Xsig.S | 8 +-- arch/x86/math-emu/wm_shrx.S | 16 ++--- arch/x86/mm/mem_encrypt_boot.S | 4 +- arch/x86/platform/efi/efi_stub_32.S | 2 +- arch/x86/platform/efi/efi_stub_64.S | 2 +- arch/x86/platform/efi/efi_thunk_64.S | 2 +- arch/x86/platform/olpc/xo1-wakeup.S | 6 +- arch/x86/power/hibernate_asm_32.S | 4 +- arch/x86/power/hibernate_asm_64.S | 4 +- arch/x86/um/checksum_32.S | 4 +- arch/x86/um/setjmp_32.S | 2 +- arch/x86/um/setjmp_64.S | 2 +- arch/x86/xen/xen-asm.S | 12 ++-- arch/x86/xen/xen-head.S | 2 +- fs/udf/namei.c | 8 +-- include/net/bluetooth/hci_core.h | 3 + include/uapi/linux/rfkill.h | 2 +- mm/gup.c | 2 +- mm/memory-failure.c | 4 +- mm/memory.c | 2 + mm/migrate.c | 7 ++- mm/mlock.c | 1 + mm/shmem.c | 4 +- mm/userfaultfd.c | 3 + net/bluetooth/hci_core.c | 6 +- samples/ftrace/ftrace-direct-modify.c | 4 +- samples/ftrace/ftrace-direct-too.c | 2 +- samples/ftrace/ftrace-direct.c | 2 +- scripts/Makefile.build | 11 ++++ scripts/Makefile.lib | 11 ---- scripts/link-vmlinux.sh | 3 + tools/arch/x86/lib/memcpy_64.S | 12 ++-- tools/arch/x86/lib/memset_64.S | 6 +- tools/objtool/arch/x86/decode.c | 13 ++-- tools/objtool/builtin-check.c | 3 +- tools/objtool/check.c | 24 ++++++++ tools/objtool/include/objtool/arch.h | 1 + tools/objtool/include/objtool/builtin.h | 2 +- 145 files changed, 608 insertions(+), 484 deletions(-)