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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2010-04-24 15:35:43 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2010-05-03 08:32:31 -0400 |
| commit | 26c0c75e69265961e891ed80b38fb62a548ab371 (patch) | |
| tree | 1ecbc767a1b2ad3e8f25d88e918076806d8c2eb1 /fs/nfsd/nfs4proc.c | |
| parent | e0c8233622cbd49d171bc57b60e725f2fb748750 (diff) | |
| download | linux-3.10-26c0c75e69265961e891ed80b38fb62a548ab371.tar.gz linux-3.10-26c0c75e69265961e891ed80b38fb62a548ab371.tar.bz2 linux-3.10-26c0c75e69265961e891ed80b38fb62a548ab371.zip | |
nfsd4: fix unlikely race in session replay case
In the replay case, the
renew_client(session->se_client);
happens after we've droppped the sessionid_lock, and without holding a
reference on the session; so there's nothing preventing the session
being freed before we get here.
Thanks to Benny Halevy for catching a bug in an earlier version of this
patch.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs/nfsd/nfs4proc.c')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index e147dbcb7ef..61282f8405b 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1027,6 +1027,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, resp->rqstp = rqstp; resp->cstate.minorversion = args->minorversion; resp->cstate.replay_owner = NULL; + resp->cstate.session = NULL; fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); /* Use the deferral mechanism only for NFSv4.0 compounds */ |