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Date:   Wed, 23 Dec 2020 14:48:09 +0000
From:   Will Deacon <will@...nel.org>
To:     Heiko Carstens <hca@...ux.ibm.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Willem de Bruijn <willemb@...gle.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Matthew Wilcox <willy@...radead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] epoll: fix compat syscall wire up of epoll_pwait2

On Sun, Dec 20, 2020 at 10:58:30AM +0100, Heiko Carstens wrote:
> Commit b0a0c2615f6f ("epoll: wire up syscall epoll_pwait2") wired up
> the 64 bit syscall instead of the compat variant in a couple of places.
> 
> Cc: Willem de Bruijn <willemb@...gle.com>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Matthew Wilcox (Oracle) <willy@...radead.org>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Vasily Gorbik <gor@...ux.ibm.com>
> Cc: Christian Borntraeger <borntraeger@...ibm.com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Fixes: b0a0c2615f6f ("epoll: wire up syscall epoll_pwait2")
> Signed-off-by: Heiko Carstens <hca@...ux.ibm.com>
> ---
>  arch/arm64/include/asm/unistd32.h         | 2 +-
>  arch/mips/kernel/syscalls/syscall_n32.tbl | 2 +-
>  arch/s390/kernel/syscalls/syscall.tbl     | 2 +-
>  arch/sparc/kernel/syscalls/syscall.tbl    | 2 +-
>  4 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
> index f4bca2b90218..cccfbbefbf95 100644
> --- a/arch/arm64/include/asm/unistd32.h
> +++ b/arch/arm64/include/asm/unistd32.h
> @@ -890,7 +890,7 @@ __SYSCALL(__NR_faccessat2, sys_faccessat2)
>  #define __NR_process_madvise 440
>  __SYSCALL(__NR_process_madvise, sys_process_madvise)
>  #define __NR_epoll_pwait2 441
> -__SYSCALL(__NR_epoll_pwait2, sys_epoll_pwait2)
> +__SYSCALL(__NR_epoll_pwait2, compat_sys_epoll_pwait2)


For this bit ^^

Acked-by: Will Deacon <will@...nel.org>

Will

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