linux-kernel - [PATCHES] uaccess misc

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Message-ID: <20200529232615.GK23230@ZenIV.linux.org.uk>
Date:   Sat, 30 May 2020 00:26:15 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCHES] uaccess misc

	The stuff that doesn't fit anywhere else.  Hopefully
saner marshalling for weird 7-argument syscalls (pselect6()),
low-hanging fruit in several binfmt, unsafe_put_user-based
x86 cp_stat64(), etc. - there's really no common topic here.

	BTW, after that series there's no more __clear_user()
callers outside of arch/* and damn few in arch/*, other than
clear_user() instances themselves...

Branch is uaccess.misc, based at uaccess.base.


Al Viro (9):
      pselect6() and friends: take handling the combined 6th/7th args into helper
      binfmt_elf: don't bother with __{put,copy_to}_user()
      binfmt_elf_fdpic: don't use __... uaccess primitives
      binfmt_flat: don't use __put_user()
      x86: switch cp_stat64() to unsafe_put_user()
      TEST_ACCESS_OK _never_ had been checked anywhere
      user_regset_copyout_zero(): use clear_user()
      x86: kvm_hv_set_msr(): use __put_user() instead of 32bit __clear_user()
      bpf: make bpf_check_uarg_tail_zero() use check_zeroed_user()

 arch/x86/include/asm/pgtable_32.h |   7 ---
 arch/x86/kernel/sys_ia32.c        |  40 ++++++++------
 arch/x86/kvm/hyperv.c             |   2 +-
 fs/binfmt_elf.c                   |  14 ++---
 fs/binfmt_elf_fdpic.c             |  31 +++++++----
 fs/binfmt_flat.c                  |  22 +++++---
 fs/select.c                       | 112 ++++++++++++++++++++++----------------
 include/linux/regset.h            |   2 +-
 kernel/bpf/syscall.c              |  25 ++-------
 9 files changed, 134 insertions(+), 121 deletions(-)