Date: Wed, 26 Feb 2014 02:01:05 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-geom@freebsd.org Cc: mav@FreeBSD.org Subject: 3rd party geom module on 10-STABLE cause panics in biodone() Message-ID: <585146922.20140226020105@serebryakov.spb.ru>
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Hello, Freebsd-geom.
My geom_raid5, which works rock-stable on 9-STABLE, causes panics in
biodone() on 10-STABLE. It causes panic at line 3567,
3561 if ((bp->bio_flags & BIO_TRANSIENT_MAPPING) != 0) {
3562 bp->bio_flags &= ~BIO_TRANSIENT_MAPPING;
3563 bp->bio_flags |= BIO_UNMAPPED;
3564 start = trunc_page((vm_offset_t)bp->bio_data);
3565 end = round_page((vm_offset_t)bp->bio_data + bp->bio_length);
3566 pmap_qremove(start, OFF_TO_IDX(end - start));
3567 vmem_free(transient_arena, start, end - start);
3568 atomic_add_int(&inflight_transient_maps, -1);
3569 }
And these crashes are very bad: 9 of 10 times system could not make
crashdump or reboot and 8 out of 10 times it shuts down video output (!).
I was lucky to get one crashdump to find this line...
What could I do wrong in my module?
--
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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