Bug#548630: linux-image-2.6.26-2-686: Crash/Hang with heavy disk write when using SATA AHCI mode

[Jonathan Nieder <jrnieder@gmail.com>]

Hi,

Hans IJ wrote:

> I can reproduce this problem on both an ASUS P5Q-VM and Intel DG45ID
> Motherboard. Both MB's have same ICH10 chipset.
> Let me know if you need more.

Sorry for the loong delay.  The assertion triggered here is in
mm/vmscan.c, function isolate_lru_pages():

		switch (__isolate_lru_page(page, mode, file)) {
		case 0:
			[...]

		case -EBUSY:
			[...]
			continue;

		default:
			BUG();
		}

eax contains -EINVAL, so chances are that was the error code.  It
means the PageLRU flag was clear, the page's mode didn't match "mode",
the page's is_file_cache flag didn't match "file", or the page was
unevictable.

Maybe this is fixed by v2.6.39~59 (mm: check PageUnevictable in
lru_deactivate_fn(), 2011-05-11), even though the case that prompted
that patch was not broken until v2.6.39-rc1~329 (2011-03-22).  Can you
still reproduce this?  If so, could you test 2.6.39 (which would
work according to that hypothesis) and 2.6.39-rc7 (which wouldn't) to
check?

Hope that helps,
Jonathan