• Tony Luck's avatar
    x86/mce: Fix siginfo_t->si_addr value for non-recoverable memory faults · 6751ed65
    Tony Luck authored
    In commit dad1743e ("x86/mce: Only restart instruction after machine
    check recovery if it is safe") we fixed mce_notify_process() to force a
    signal to the current process if it was not restartable (RIPV bit not
    set in MCG_STATUS). But doing it here means that the process doesn't
    get told the virtual address of the fault via siginfo_t->si_addr. This
    would prevent application level recovery from the fault.
    
    Make a new MF_MUST_KILL flag bit for memory_failure() et al. to use so
    that we will provide the right information with the signal.
    Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
    Acked-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
    Cc: stable@kernel.org    # 3.4+
    6751ed65
memory-failure.c 42 KB