Re: [PATCH] futex: improve user space accesses

On Dez 08 2024, Linus Torvalds wrote:

IOW, does this one-liner fix it for you?

  --- a/kernel/futex/futex.h
  +++ b/kernel/futex/futex.h
  @@ -265,7 +265,7 @@
        else if (!user_read_access_begin(from, sizeof(*from)))
                return -EFAULT;
        unsafe_get_user(val, from, Efault);
  -     user_access_end();
  +     user_read_access_end();
        *dest = val;
        return 0;
   Efault:

Thanks, I can confirm that this fixed the crash (changing both arms as
pointed out by Christophe).

-- 
Andreas Schwab, schwab@linux-m68k.org
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