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authorBrian Gerst <brgerst@gmail.com>2020-11-30 17:30:59 -0500
committerBorislav Petkov <bp@suse.de>2020-12-28 11:58:59 +0100
commit2ca408d9c749c32288bc28725f9f12ba30299e8f (patch)
treeed7eff796318b8a87b1c88ca7e490529626df089 /arch/Kconfig
parent5c8fe583cce542aa0b84adc939ce85293de36e5e (diff)
downloadlinux-2ca408d9c749c32288bc28725f9f12ba30299e8f.tar.bz2
fanotify: Fix sys_fanotify_mark() on native x86-32
Commit 121b32a58a3a ("x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments") converted native x86-32 which take 64-bit arguments to use the compat handlers to allow conversion to passing args via pt_regs. sys_fanotify_mark() was however missed, as it has a general compat handler. Add a config option that will use the syscall wrapper that takes the split args for native 32-bit. [ bp: Fix typo in Kconfig help text. ] Fixes: 121b32a58a3a ("x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments") Reported-by: Paweł Jasiak <pawel@jasiak.xyz> Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Jan Kara <jack@suse.cz> Acked-by: Andy Lutomirski <luto@kernel.org> Link: https://lkml.kernel.org/r/20201130223059.101286-1-brgerst@gmail.com
Diffstat (limited to 'arch/Kconfig')
-rw-r--r--arch/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 78c6f05b10f9..24862d15f3a3 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1105,6 +1105,12 @@ config HAVE_ARCH_PFN_VALID
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
bool
+config ARCH_SPLIT_ARG64
+ bool
+ help
+ If a 32-bit architecture requires 64-bit arguments to be split into
+ pairs of 32-bit arguments, select this option.
+
source "kernel/gcov/Kconfig"
source "scripts/gcc-plugins/Kconfig"