From: Peter Zijlstra peterz@infradead.org
commit 15583e514eb16744b80be85dea0774ece153177d upstream.
This is userspace code and doesn't play by the normal kernel rules.
Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Signed-off-by: Borislav Petkov bp@suse.de Reviewed-by: Josh Poimboeuf jpoimboe@kernel.org Signed-off-by: Borislav Petkov bp@suse.de Signed-off-by: Thadeu Lima de Souza Cascardo cascardo@canonical.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/entry/vsyscall/vsyscall_emu_64.S | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/arch/x86/entry/vsyscall/vsyscall_emu_64.S +++ b/arch/x86/entry/vsyscall/vsyscall_emu_64.S @@ -19,17 +19,20 @@ __vsyscall_page:
mov $__NR_gettimeofday, %rax syscall - RET + ret + int3
.balign 1024, 0xcc mov $__NR_time, %rax syscall - RET + ret + int3
.balign 1024, 0xcc mov $__NR_getcpu, %rax syscall - RET + ret + int3
.balign 4096, 0xcc