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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)
commit113aac6d567bda783af36d08f73bfda47d8e9a40
tree129c5fefeed6674677a955447557301516562d35tree | snapshot
parentcb2856c5971723910a86b7d1d0cf623d6919cbc4commit | 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operations that are no longer valid or accessible.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: e39d8a186ed0 ("NFSv4: Fix an Oops during delegation callbacks")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
fs/nfs/delegation.c diff | blob | history
Domain: System / Kernel;