diff options
| author | Al Viro <[email protected]> | 2011-03-18 12:29:36 +0000 |
|---|---|---|
| committer | Al Viro <[email protected]> | 2011-03-18 12:54:59 +0000 |
| commit | 27cb1572e3e6bb1f8cf6bb3d74c914a87b131792 (patch) | |
| tree | 01e6510de480d3595ccff315d777770490e51f9c /net/unix/af_unix.c | |
| parent | vfs: split off vfsmount-related parts of vfs_kern_mount() (diff) | |
| download | kernel-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.tar.gz kernel-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.zip | |
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 <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions