• Linus Torvalds's avatar
    x86: don't send SIGBUS for kernel page faults · 96054569
    Linus Torvalds authored
    It's wrong for several reasons, but the most direct one is that the
    fault may be for the stack accesses to set up a previous SIGBUS.  When
    we have a kernel exception, the kernel exception handler does all the
    fixups, not some user-level signal handler.
    
    Even apart from the nested SIGBUS issue, it's also wrong to give out
    kernel fault addresses in the signal handler info block, or to send a
    SIGBUS when a system call already returns EFAULT.
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    96054569
fault.c 26.7 KB