From: <Conor.Dooley@microchip.com>
To: <rdunlap@infradead.org>, <linux-kernel@vger.kernel.org>
Cc: <arnd@arndb.de>, <josh@joshtriplett.org>,
<paul.walmsley@sifive.com>, <palmer@dabbelt.com>,
<aou@eecs.berkeley.edu>, <linux-riscv@lists.infradead.org>,
<linux-api@vger.kernel.org>, <akpm@linux-foundation.org>,
<linux-mm@kvack.org>
Subject: Re: [PATCH v2] kernel/sys_ni: add compat entry for fadvise64_64
Date: Sat, 13 Aug 2022 17:03:25 +0000 [thread overview]
Message-ID: <03c5f897-d4e2-8408-6116-ad7619ca385d@microchip.com> (raw)
In-Reply-To: <20220807220934.5689-1-rdunlap@infradead.org>
On 07/08/2022 23:09, Randy Dunlap wrote:
> When CONFIG_ADVISE_SYSCALLS is not set/enabled and CONFIG_COMPAT is
> set/enabled, the riscv compat_syscall_table references
> 'compat_sys_fadvise64_64', which is not defined:
>
> riscv64-linux-ld: arch/riscv/kernel/compat_syscall_table.o:(.rodata+0x6f8):
> undefined reference to `compat_sys_fadvise64_64'
>
> Add 'fadvise64_64' to kernel/sys_ni.c as a conditional COMPAT function
> so that when CONFIG_ADVISE_SYSCALLS is not set, there is a fallback
> function available.
Is this in a 6.0 destined tree somewhere that I've missed?
Bumped into it while looking at an unrelated LKP randconfig error.
FWIW:
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Thanks,
Conor.
>
> Fixes: d3ac21cacc24 ("mm: Support compiling out madvise and fadvise")
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Suggested-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Josh Triplett <josh@joshtriplett.org>
> Cc: Paul Walmsley <paul.walmsley@sifive.com>
> Cc: Palmer Dabbelt <palmer@dabbelt.com>
> Cc: Albert Ou <aou@eecs.berkeley.edu>
> Cc: linux-riscv@lists.infradead.org
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: linux-api@vger.kernel.org
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: linux-mm@kvack.org
> ---
> v2: patch kernel/sys_ni.c (for any arch) instead of arch/riscv's
> unistd.h (Arnd)
>
> kernel/sys_ni.c | 1 +
> 1 file changed, 1 insertion(+)
>
> --- a/kernel/sys_ni.c
> +++ b/kernel/sys_ni.c
> @@ -277,6 +277,7 @@ COND_SYSCALL(landlock_restrict_self);
>
> /* mm/fadvise.c */
> COND_SYSCALL(fadvise64_64);
> +COND_SYSCALL_COMPAT(fadvise64_64);
>
> /* mm/, CONFIG_MMU only */
> COND_SYSCALL(swapon);
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2022-08-13 17:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-07 22:09 [PATCH v2] kernel/sys_ni: add compat entry for fadvise64_64 Randy Dunlap
2022-08-08 6:57 ` Arnd Bergmann
2022-08-13 17:03 ` Conor.Dooley [this message]
2022-08-13 17:44 ` Randy Dunlap
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