The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=47619b604402c9672a0f9bf62666f3bcba1dfb7e
commit 47619b604402c9672a0f9bf62666f3bcba1dfb7e Author: Mark Johnston <[email protected]> AuthorDate: 2021-08-31 19:35:08 +0000 Commit: Mark Johnston <[email protected]> CommitDate: 2021-08-31 19:50:04 +0000 md: Clamp to a multiple of the sector size when resizing We do this when creating md(4) devices, in kern_mdattach_locked(), but not when resizing the provider. Apply the same policy when resizing, as many GEOM classes do not expect to deal with providers for which pp->mediasize % pp->sectorsize != 0. Reported by: syzkaller MFC after: 1 week Sponsored by: The FreeBSD Foundation --- sys/dev/md/md.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c index 1627ee2e5fa6..08fb4b0c6574 100644 --- a/sys/dev/md/md.c +++ b/sys/dev/md/md.c @@ -1580,6 +1580,7 @@ mdresize(struct md_s *sc, struct md_req *mdr) } sc->mediasize = mdr->md_mediasize; + g_topology_lock(); g_resize_provider(sc->pp, sc->mediasize); g_topology_unlock(); @@ -1787,6 +1788,7 @@ kern_mdresize_locked(struct md_req *mdr) return (ENOENT); if (mdr->md_mediasize < sc->sectorsize) return (EINVAL); + mdr->md_mediasize -= mdr->md_mediasize % sc->sectorsize; if (mdr->md_mediasize < sc->mediasize && !(sc->flags & MD_FORCE) && !(mdr->md_options & MD_FORCE)) _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-main To unsubscribe, send any mail to "[email protected]"
