diff options
Diffstat (limited to 'arch/x86/mm/mpx.c')
| -rw-r--r-- | arch/x86/mm/mpx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 67ebf575122..c439ec47821 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -349,6 +349,12 @@ static __user void *task_get_bounds_dir(struct task_struct *tsk) return MPX_INVALID_BOUNDS_DIR; /* + * 32-bit binaries on 64-bit kernels are currently + * unsupported. + */ + if (IS_ENABLED(CONFIG_X86_64) && test_thread_flag(TIF_IA32)) + return MPX_INVALID_BOUNDS_DIR; + /* * The bounds directory pointer is stored in a register * only accessible if we first do an xsave. */ |