Messages in this thread | | | Date | Mon, 17 Aug 2015 10:33:41 +1000 | From | NeilBrown <> | Subject | Re: [PATCH stable] md/bitmap: return an error when bitmap superblock is corrupt. |
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On Fri, 14 Aug 2015 10:23:51 -0700 Greg KH <greg@kroah.com> wrote:
> On Fri, Aug 14, 2015 at 05:04:21PM +1000, NeilBrown wrote: > > > > commit b97e92574c0bf335db1cd2ec491d8ff5cd5d0b49 upstream > > Use separate bitmaps for each nodes in the cluster > > > > bitmap_read_sb() validates the bitmap superblock that it reads in. > > If it finds an inconsistency like a bad magic number or out-of-range > > version number, it prints an error and returns, but it incorrectly > > returns zero, so the array is still assembled with the (invalid) bitmap. > > > > This means it could try to use a bitmap with a new version number which > > it therefore does not understand. > > > > This bug was introduced in 3.5 and fix as part of a larger patch in 4.1. > > So the patch is suitable for any -stable kernel in that range. > > > > Fixes: 27581e5ae01f ("md/bitmap: centralise allocation of bitmap file pages.") > > Cc: stable@vger.kernel.org (v3.5..v4.1) > > b97e92574c0 is in 4.1, so do you mean (v3.5..v4.0) here? >
Yes, I did. Thanks!
v3.5..v4.0.
NeilBrown
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