• Al Viro's avatar
    nios2: fix livelock in uaccess · e902e508
    Al Viro authored
    nios2 equivalent of 26178ec1 "x86: mm: consolidate VM_FAULT_RETRY handling"
    If e.g. get_user() triggers a page fault and a fatal signal is caught, we might
    end up with handle_mm_fault() returning VM_FAULT_RETRY and not doing anything
    to page tables.  In such case we must *not* return to the faulting insn -
    that would repeat the entire thing without making any progress; what we need
    instead is to treat that as failed (user) memory access.
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    e902e508
fault.c 6.57 KB