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NFS: nfs_delegation_find_inode_server must first reference the superblock
authorTrond Myklebust <trond.myklebust@hammerspace.com>
Sun, 10 Jan 2021 20:46:06 +0000 (15:46 -0500)
committerTrond Myklebust <trond.myklebust@hammerspace.com>
Sun, 10 Jan 2021 21:29:28 +0000 (16:29 -0500)
commit99c3b1bbf2a1293d0187d651f865b17af8424591
tree129c5fefeed6674677a955447557301516562d35tree | snapshot
parent83df62cc9ac24feb71f54172a96d6a979431c3e3commit | diff
NFS: nfs_delegation_find_inode_server must first reference the superblock

Before referencing the inode, we must ensure that the superblock can be
referenced. Otherwise, we can end up with iput() calling superblock
operations that are no longer valid or accessible.

Fixes: 36f08f837324 ("NFSv4: Fix an Oops during delegation callbacks")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
fs/nfs/delegation.c diff | blob | history
Linux Kernel Source Tree.