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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull vfs mount fix from Al Viro:
 "Fix for umount -l/mount --move race caught by syzbot yesterday..."

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  do_move_mount(): fix an unsafe use of is_anon_ns()
This commit is contained in:
Linus Torvalds
2019-05-09 19:35:41 -07:00
parent 601e6bcc4e 05883eee85
commit 8ea5b2abd0
1 changed files with 1 additions and 1 deletions
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2
fs/namespace.c
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@@ -2599,7 +2599,7 @@ static int do_move_mount(struct path *old_path, struct path *new_path)
if (attached && !check_mnt(old)) if (attached && !check_mnt(old))
goto out; goto out;
if (!attached && !is_anon_ns(ns)) if (!attached && !(ns && is_anon_ns(ns)))
goto out; goto out;
if (old->mnt.mnt_flags & MNT_LOCKED) if (old->mnt.mnt_flags & MNT_LOCKED)