Commit-ID: f85a8573ceb225e606fcf38a9320782316f47c71 Gitweb: https://git.kernel.org/tip/f85a8573ceb225e606fcf38a9320782316f47c71 Author: Andy Lutomirski <l...@kernel.org> AuthorDate: Wed, 3 Jul 2019 13:34:03 -0700 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Mon, 22 Jul 2019 10:31:22 +0200
x86/syscalls: Disallow compat entries for all types of 64-bit syscalls A "compat" entry in the syscall tables means to use a different entry on 32-bit and 64-bit builds. This only makes sense for syscalls that exist in the first place in 32-bit builds, so disallow it for anything other than i386. Signed-off-by: Andy Lutomirski <l...@kernel.org> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Link: https://lkml.kernel.org/r/4b7565954c5a06530ac01d98cb1592538fd8ae51.1562185330.git.l...@kernel.org --- arch/x86/entry/syscalls/syscalltbl.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/entry/syscalls/syscalltbl.sh b/arch/x86/entry/syscalls/syscalltbl.sh index 94fcd1951aca..53c8c1a9adf9 100644 --- a/arch/x86/entry/syscalls/syscalltbl.sh +++ b/arch/x86/entry/syscalls/syscalltbl.sh @@ -27,8 +27,8 @@ emit() { compat="$4" umlentry="" - if [ "$abi" = "64" -a -n "$compat" ]; then - echo "a compat entry for a 64-bit syscall makes no sense" >&2 + if [ "$abi" != "I386" -a -n "$compat" ]; then + echo "a compat entry ($abi: $compat) for a 64-bit syscall makes no sense" >&2 exit 1 fi
