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NFSD: Fix nfsd4_encode_fattr4() crasher

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BugLink: https://bugs.launchpad.net/bugs/2070349

[ Upstream commit 18180a4550d08be4eb0387fe83f02f703f92d4e7 ]

Ensure that args.acl is initialized early. It is used in an
unconditional call to kfree() on the way out of
nfsd4_encode_fattr4().

Reported-by: Scott Mayhew <smayhew@redhat.com>
Fixes: 83ab8678ad ("NFSD: Add struct nfsd4_fattr_args")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Chuck Lever
2024-04-25 17:46:26 -04:00
committed by Stefan Bader
parent fbf6672479
commit 2e16ecd102
1 changed files with 1 additions and 1 deletions
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fs/nfsd/nfs4xdr.c
+1 -1
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@@ -3511,6 +3511,7 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
args.exp = exp;
args.dentry = dentry;
args.ignore_crossmnt = (ignore_crossmnt != 0);
args.acl = NULL;
/*
* Make a local copy of the attribute bitmap that can be modified.
@@ -3565,7 +3566,6 @@ nfsd4_encode_fattr4(struct svc_rqst *rqstp, struct xdr_stream *xdr,
} else
args.fhp = fhp;
args.acl = NULL;
if (attrmask[0] & FATTR4_WORD0_ACL) {
err = nfsd4_get_nfs4_acl(rqstp, dentry, &args.acl);
if (err == -EOPNOTSUPP)