• Peter Zijlstra's avatar
    x86/uaccess, ubsan: Fix UBSAN vs. SMAP · d08965a2
    Peter Zijlstra authored
    UBSAN can insert extra code in random locations; including AC=1
    sections. Typically this code is not safe and needs wrapping.
    
    So far, only __ubsan_handle_type_mismatch* have been observed in AC=1
    sections and therefore only those are annotated.
    Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Dmitry Vyukov <dvyukov@google.com>
    Cc: Josh Poimboeuf <jpoimboe@redhat.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    d08965a2
ubsan.c 11.2 KB