Re: Linux Kernel 2.6.13-rc7 (WORKS) (2.6.13, DRQ/System CRASH)

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

 



Also,

Part of the problem may be that I have two ATA/133 Promise cards in one box and only one ATA/133 in the other box.

Kernel 2.6.13 has fixed the problem with one ATA/133 card in the box.
Kernel 2.6.13 has not fixed the problem with two ATA/133 cards in the box.

FYI

Justin.


On Mon, 5 Sep 2005, Alan Cox wrote:

On Llu, 2005-09-05 at 09:26 +0200, Bartlomiej Zolnierkiewicz wrote:
After DMA timeout driver reverted back to PIO,
ide-taskfile.c also holds PIO code besides IDE Taskfile Access.


On SMP after a DMA timeout it will potentially freeze. There are some
paths in that code which lead to double lock takes and hangs, plus some
timer races.

Justin can you make a backup (I mean that seriously), then build a
kernel with spin lock debug enabled and see if you can reproduce the
problem and get a trace.

If its the locking you'll get a trace and the kernel will continue. At
that point because the spinlock debug continues unsafely through a
double lock after the trace you are in the "danger zone" hence the
backup warning

[Yes the spin lock debug code really should warn you its dangerous for
non debug uses or get patched as it is in Fedora to trace and stop]

If its a hardware or other problem it will still hang

if its an unrelated lock problem it should still get a trace.


Why you see this only on 2.6.13 not 2.6.13-rc7 I don't know. It makes me
wonder if you have a bad drive - but then you imply going back to rc7
goes back to stable. Can you therefore also check the .config options
between the two kernels match.

Alan

-
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]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux