pgd_none_or_clear_bad strangeness?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



In lib/pagewalk.c, I've been using the various forms of
{pgd,pud,pmd}_none_or_clear_bad while walking page tables as that
seemed the canonical way to do things. Lately (eg with -rc7-mm1),
these have been triggering messages like "bad pgd 0x01e3" and causing
nasty double faults. It appears this is actually triggered at the pmd
level (mm/memory.c:116), though it appears to produce the wrong
message.

Has something changed here? I'm pretty sure this used to work! Is this
not a kosher thing to do? Does it make any sense I'd repeatedly run
into a bad pmd in the middle of bash's page table right after boot?
The simple _none variant seems to work, but I worry that it's papering
over a real problem.

-- 
Mathematics is the supreme nostalgia of our time.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux