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Merge tag 'pull-namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull namespace fix from Al Viro:
 "Fix weird corner case in copy_mnt_ns()"

* tag 'pull-namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  copy_mnt_ns(): handle a corner case (overmounted mntns bindings) saner
This commit is contained in:
Linus Torvalds
2022-12-12 18:36:12 -08:00
parent 75f4d9af8b 61d8e42667
commit 13c574fec8
1 changed files with 2 additions and 1 deletions
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3
fs/namespace.c
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@@ -3515,8 +3515,9 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
q = next_mnt(q, new);
if (!q)
break;
// an mntns binding we'd skipped?
while (p->mnt.mnt_root != q->mnt.mnt_root)
p = next_mnt(p, old);
p = next_mnt(skip_mnt_tree(p), old);
}
namespace_unlock();