[PATCH 00/15] linux system call fixes

[Arnd Bergmann]

From: Arnd Bergmann <arnd at arndb.de>

I'm working on cleanup series for Linux system call handling, trying to
unify some of the architecture specific code there among other things.

In the process, I came across a number of bugs that are ABI relevant,
so I'm trying to merge these first. I found all of these by inspection,
not by running the code, so any extra review would help. I assume some
of the issues were already caught by existing LTP tests, while for others
we could add a test. Again, I did not check what is already there.

The sync_file_range and fadvise64_64 changes on sh, csky and hexagon
are likely to also require changes in the libc implementation.

Once the patches are reviewed, I plan to merge my changes as bugfixes
through the asm-generic tree, but architecture maintainers can also
pick them up directly to speed up the bugfix.

     Arnd

Cc: linux-arch at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: Thomas Bogendoerfer <tsbogend at alpha.franken.de>
Cc: linux-mips at vger.kernel.org
Cc: Helge Deller <deller at gmx.de>
Cc: linux-parisc at vger.kernel.org
Cc: "David S. Miller" <davem at davemloft.net>
Cc: Andreas Larsson <andreas at gaisler.com>
Cc: sparclinux at vger.kernel.org
Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Nicholas Piggin <npiggin at gmail.com>
Cc: Christophe Leroy <christophe.leroy at csgroup.eu>
Cc: Naveen N. Rao <naveen.n.rao at linux.ibm.com>
Cc: linuxppc-dev at lists.ozlabs.org
Cc: Brian Cain <bcain at quicinc.com>
Cc: linux-hexagon at vger.kernel.org
Cc: Guo Ren <guoren at kernel.org>
Cc: linux-csky at vger.kernel.org
Cc: Heiko Carstens <hca at linux.ibm.com>
Cc: linux-s390 at vger.kernel.org
Cc: Rich Felker <dalias at libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz at physik.fu-berlin.de>
Cc: linux-sh at vger.kernel.org
Cc: "H. Peter Anvin" <hpa at zytor.com>
Cc: Alexander Viro <viro at zeniv.linux.org.uk>
Cc: Christian Brauner <brauner at kernel.org>
Cc: linux-fsdevel at vger.kernel.org
Cc: libc-alpha at sourceware.org
Cc: musl at lists.openwall.com
Cc: ltp at lists.linux.it

Arnd Bergmann (15):
  ftruncate: pass a signed offset
  syscalls: fix compat_sys_io_pgetevents_time64 usage
  mips: fix compat_sys_lseek syscall
  sparc: fix old compat_sys_select()
  sparc: fix compat recv/recvfrom syscalls
  parisc: use correct compat recv/recvfrom syscalls
  parisc: use generic sys_fanotify_mark implementation
  powerpc: restore some missing spu syscalls
  sh: rework sync_file_range ABI
  csky, hexagon: fix broken sys_sync_file_range
  hexagon: fix fadvise64_64 calling conventions
  s390: remove native mmap2() syscall
  syscalls: mmap(): use unsigned offset type consistently
  asm-generic: unistd: fix time32 compat syscall handling
  linux/syscalls.h: add missing __user annotations

 arch/arm64/include/asm/unistd32.h         |   2 +-
 arch/csky/include/uapi/asm/unistd.h       |   1 +
 arch/csky/kernel/syscall.c                |   2 +-
 arch/hexagon/include/asm/syscalls.h       |   6 +
 arch/hexagon/include/uapi/asm/unistd.h    |   1 +
 arch/hexagon/kernel/syscalltab.c          |   7 +
 arch/loongarch/kernel/syscall.c           |   2 +-
 arch/microblaze/kernel/sys_microblaze.c   |   2 +-
 arch/mips/kernel/syscalls/syscall_n32.tbl |   2 +-
 arch/mips/kernel/syscalls/syscall_o32.tbl |   4 +-
 arch/parisc/Kconfig                       |   1 +
 arch/parisc/kernel/sys_parisc32.c         |   9 -
 arch/parisc/kernel/syscalls/syscall.tbl   |   6 +-
 arch/powerpc/kernel/syscalls/syscall.tbl  |   6 +-
 arch/riscv/kernel/sys_riscv.c             |   4 +-
 arch/s390/kernel/syscall.c                |  27 ---
 arch/s390/kernel/syscalls/syscall.tbl     |   2 +-
 arch/sh/kernel/sys_sh32.c                 |  11 ++
 arch/sh/kernel/syscalls/syscall.tbl       |   3 +-
 arch/sparc/kernel/sys32.S                 | 221 ----------------------
 arch/sparc/kernel/syscalls/syscall.tbl    |   8 +-
 arch/x86/entry/syscalls/syscall_32.tbl    |   2 +-
 fs/open.c                                 |   4 +-
 include/asm-generic/syscalls.h            |   2 +-
 include/linux/compat.h                    |   2 +-
 include/linux/syscalls.h                  |  20 +-
 include/uapi/asm-generic/unistd.h         | 146 +++++++++-----
 27 files changed, 160 insertions(+), 343 deletions(-)
 create mode 100644 arch/hexagon/include/asm/syscalls.h

-- 
2.39.2