Bug#847677: "unable to decommit memory" data loss
Clint Adams
clint at debian.org
Sat Dec 10 16:47:38 UTC 2016
On Sat, Dec 10, 2016 at 11:24:26AM -0400, Joey Hess wrote:
> It apparently then led to memory corruption, since git-annex created
> some very bogus symlinks:
>
> lrwxrwxrwx 1 user user 338 Jun 17 22:36 bup.git/objects/pack/pack-47b493a3bbbd22200d2b390c277e49ce713243cc.pack -> *??:?;J?????????
>
> So, we seem to have data loss, presumably any git-annex binary built
> with this ghc and used with a too old kernel. Could also affect other
> haskell programs.
If the MADV_FREE is actually causing memory corruption we have two
problems:
1) The upstream patch will not fix it
2) There is a serious bug in Linux < 4.5
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