This is a note to let you know that I've just added the patch titled kernel/sys_ni: add compat entry for fadvise64_64 to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: kernel-sys_ni-add-compat-entry-for-fadvise64_64.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From a8faed3a02eeb75857a3b5d660fa80fe79db77a3 Mon Sep 17 00:00:00 2001 From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Date: Sun, 7 Aug 2022 15:09:34 -0700 Subject: kernel/sys_ni: add compat entry for fadvise64_64 From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> commit a8faed3a02eeb75857a3b5d660fa80fe79db77a3 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- kernel/sys_ni.c | 1 + 1 file changed, 1 insertion(+) --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -276,6 +276,7 @@ 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 stable-queue which might be from rdunlap@xxxxxxxxxxxxx are queue-5.15/kernel-sys_ni-add-compat-entry-for-fadvise64_64.patch queue-5.15/parisc-make-config_64bit-available-for-arch-parisc64-only.patch