ceph: fix null pointer dereference in ceph_flush_snaps()
Signed-off-by: Yan, Zheng <zyan@redhat.com>
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@ -1347,9 +1347,12 @@ void ceph_flush_snaps(struct ceph_inode_info *ci,
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{
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struct inode *inode = &ci->vfs_inode;
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struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
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struct ceph_mds_session *session = *psession;
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struct ceph_mds_session *session = NULL;
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int mds;
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dout("ceph_flush_snaps %p\n", inode);
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if (psession)
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session = *psession;
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retry:
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spin_lock(&ci->i_ceph_lock);
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if (!(ci->i_ceph_flags & CEPH_I_FLUSH_SNAPS)) {
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