Messages in this thread | | | Date | Tue, 10 Oct 2006 15:16:03 +0200 | From | Jan Kara <> | Subject | Re: 2.6.18 ext3 panic. |
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> On Mon, 2006-10-09 14:46:30 -0500, Eric Sandeen <sandeen@sandeen.net> wrote: > > Andrew Morton wrote: > > > On Tue, 03 Oct 2006 00:43:01 -0500 > > > Eric Sandeen <sandeen@sandeen.net> wrote: > > > > Dave Jones wrote: > > > > > So I managed to reproduce it with an 'fsx foo' and a > > > > > 'fsstress -d . -r -n 100000 -p 20 -r'. This time I grabbed it from > > > > > a vanilla 2.6.18 with none of the Fedora patches.. > > > > > > > > > > I'll give 2.6.18-git a try next. > > > > > > > > > > ----------- [cut here ] --------- [please bite here ] --------- > > > > > Kernel BUG at fs/buffer.c:2791 > > > > I had thought/hoped that this was fixed by Jan's patch at > > > > http://lkml.org/lkml/2006/9/7/236 from the thread started at > > > > http://lkml.org/lkml/2006/9/1/149, but it seems maybe not. Dave hit this bug > > > > first by going through that new codepath.... > > > > > > Yes, Jan's patch is supposed to fix that !buffer_mapped() assertion. iirc, > > > Badari was hitting that BUG and was able to confirm that Jan's patch > > > (3998b9301d3d55be8373add22b6bc5e11c1d9b71 in post-2.6.18 mainline) fixed > > > it. > > > > Looking at some BH traces*, it appears that what Dave hit is a truncate > > racing with a sync... > > > > truncate ... > > ext3_invalidate_page > > journal_invalidatepage > > journal_unmap buffer > > > > going off at the same time as > > > > sync ... > > journal_dirty_data > > sync_dirty_buffer > > submit_bh <-- finds unmapped buffer, boom. > > Is this possibly related to the issues that are discussed in another > thread? We're seeing problems while unlinking large files (usually get > it within some hours with 200MB files, but couldn't yet reproduce it > with 20MB.) I don't think this is related (BTW: I've run your test for 5 hours without any luck ;( Maybe I'll try again for some longer time...).
Honza -- Jan Kara <jack@suse.cz> SuSE CR Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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