| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 80/91] NFSv4: Fix memory and state leak in _nfs4_open_and_get_state | Date | Fri, 10 Mar 2017 10:09:19 +0100 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Trond Myklebust <trond.myklebust@primarydata.com>
commit a974deee477af89411e0f80456bfb344ac433c98 upstream.
If we exit because the file access check failed, we currently leak the struct nfs4_state. We need to attach it to the open context before returning.
Fixes: 3efb9722475e ("NFSv4: Refactor _nfs4_open_and_get_state..") Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2452,6 +2452,7 @@ static int _nfs4_open_and_get_state(stru ret = PTR_ERR(state); if (IS_ERR(state)) goto out; + ctx->state = state; if (server->caps & NFS_CAP_POSIX_LOCK) set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); @@ -2474,7 +2475,6 @@ static int _nfs4_open_and_get_state(stru if (ret != 0) goto out; - ctx->state = state; if (d_inode(dentry) == state->inode) { nfs_inode_attach_open_context(ctx); if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
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