[PATCH 02/15] syscalls: fix compat_sys_io_pgetevents_time64 usage

[Heiko Carstens]

On Thu, Jun 20, 2024 at 06:23:03PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> 
> Using sys_io_pgetevents() as the entry point for compat mode tasks
> works almost correctly, but misses the sign extension for the min_nr
> and nr arguments.
> 
> This was addressed on parisc by switching to
> compat_sys_io_pgetevents_time64() in commit 6431e92fc827 ("parisc:
> io_pgetevents_time64() needs compat syscall in 32-bit compat mode"),
> as well as by using more sophisticated system call wrappers on x86 and
> s390. However, arm64, mips, powerpc, sparc and riscv still have the
> same bug.
> 
> Changes all of them over to use compat_sys_io_pgetevents_time64()
> like parisc already does. This was clearly the intention when the
> function was originally added, but it got hooked up incorrectly in
> the tables.
> 
> Cc: stable at vger.kernel.org
> Fixes: 48166e6ea47d ("y2038: add 64-bit time_t syscalls to all 32-bit architectures")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>  arch/arm64/include/asm/unistd32.h         | 2 +-
>  arch/mips/kernel/syscalls/syscall_n32.tbl | 2 +-
>  arch/mips/kernel/syscalls/syscall_o32.tbl | 2 +-
>  arch/powerpc/kernel/syscalls/syscall.tbl  | 2 +-
>  arch/s390/kernel/syscalls/syscall.tbl     | 2 +-
>  arch/sparc/kernel/syscalls/syscall.tbl    | 2 +-
>  arch/x86/entry/syscalls/syscall_32.tbl    | 2 +-
>  include/uapi/asm-generic/unistd.h         | 2 +-
>  8 files changed, 8 insertions(+), 8 deletions(-)

Acked-by: Heiko Carstens <hca at linux.ibm.com> # s390