The patch titled
Subject: kernel/sys_ni: add compat entry for fadvise64_64
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
kernel-sys_ni-add-compat-entry-for-fadvise64_64.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kernel-sys_ni-add-compat-entry-for-fadvise64_64.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Subject: kernel/sys_ni: add compat entry for fadvise64_64
Date: Sun, 7 Aug 2022 15:09:34 -0700
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.
Link: https://lkml.kernel.org/r/20220807220934.5689-1-rdunlap@xxxxxxxxxxxxx
Fixes: d3ac21cacc24 ("mm: Support compiling out madvise and fadvise")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys_ni.c | 1 +
1 file changed, 1 insertion(+)
--- a/kernel/sys_ni.c~kernel-sys_ni-add-compat-entry-for-fadvise64_64
+++ a/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);
_
Patches currently in -mm which might be from rdunlap@xxxxxxxxxxxxx are
kernel-sys_ni-add-compat-entry-for-fadvise64_64.patch
