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authorAl Viro <viro@zeniv.linux.org.uk>2011-03-18 08:29:36 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-18 08:54:59 -0400
commit27cb1572e3e6bb1f8cf6bb3d74c914a87b131792 (patch)
tree01e6510de480d3595ccff315d777770490e51f9c /fs/minix
parent9d412a43c3b26e1e549319e5eec26f0829f9f74d (diff)
downloadop-kernel-dev-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.zip
op-kernel-dev-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.tar.gz
fix deadlock in pivot_root()
Don't hold vfsmount_lock over the loop traversing ->mnt_parent; do check_mnt(new.mnt) under namespace_sem instead; combined with namespace_sem held over all that code it'll guarantee the stability of ->mnt_parent chain all the way to the root. Doing check_mnt() outside of namespace_sem in case of pivot_root() is wrong anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/minix')
0 files changed, 0 insertions, 0 deletions
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