Re: [PROBLEM] kernel BUG at include/linux/blkdev.h:601

[Jens Axboe]

On Fri, Jul 01 2005, Srihari Vijayaraghavan wrote:
> --- Jens Axboe <axboe@xxxxxxx> wrote:
> > On Thu, Jun 30 2005, Srihari Vijayaraghavan wrote:
> > > --- Srihari Vijayaraghavan
> > > <sriharivijayaraghavan@xxxxxxxxxxxx> wrote:
> > [...] 
> > > 2.6.13-rc1 (plus Hugh's get_request patch) doesn't
> > > suffer from this problem, unlike 2.6.12 and
> > 2.6.12-git
> > > releases.
> > 
> > That's a little strange, as there should be no
> > changes in this area so
> > far. Are you 100% sure?
> 
> Absolutely. 2.6.12 and 2.6.12-git9 crash within
> minutes/seconds; OTOH, 2.6.13-rc1 (plus Hugh's patch)
> survives this torture test for hours (despite
> generating 30+ MB of kernel/IDE error messages :). No
> OOPS, no BUGs, no panics, just truck load of error
> messages.
> 
> I haven't tested whether earlier releases of 2.6
> suffer from this (such as 2.6.10, 2.6.11 ..) or other
> hardware combinations exhibit the same problem etc.
> Tell me, if you want me to.

There are some minor ide updates outside of ide-cd, they must be
accounting for your success in 2.6.13-rc1 then. Could you test 2.6.12
with this patch applied?

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1181,7 +1181,8 @@ static ide_startstop_t do_reset1 (ide_dr
 		pre_reset(drive);
 		SELECT_DRIVE(drive);
 		udelay (20);
-		hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
+		hwif->OUTBSYNC(drive, WIN_SRST, IDE_COMMAND_REG);
+		ndelay(400);
 		hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
 		hwgroup->polling = 1;
 		__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);


-- 
Jens Axboe

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