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| author | Mi Jinlong <mijinlong@cn.fujitsu.com> | 2010-12-27 09:29:57 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2010-12-29 21:54:06 +0300 |
| commit | 22b6dee842c6341b49bc09cc5728eb2f8f2b3766 (patch) | |
| tree | 36c4a39433f2e99c385ab4eca11cfc8dcb99ca14 | |
| parent | 04f4ad16b231abbfde34c762697ad035a3af0b5f (diff) | |
| download | linux-22b6dee842c6341b49bc09cc5728eb2f8f2b3766.tar.xz | |
nfsd4: fix oops on secinfo_no_name result encoding
The secinfo_no_name code oopses on encoding with
BUG: unable to handle kernel NULL pointer dereference at 00000044
IP: [<e2bd239a>] nfsd4_encode_secinfo+0x1c/0x1c1 [nfsd]
We should implement a nfsd4_encode_secinfo_no_name() instead using
nfsd4_encode_secinfo().
Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index b543b2410b54..437b4623cb02 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2845,11 +2845,10 @@ nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_ } static __be32 -nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, - struct nfsd4_secinfo *secinfo) +nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, + __be32 nfserr,struct svc_export *exp) { int i = 0; - struct svc_export *exp = secinfo->si_exp; u32 nflavs; struct exp_flavor_info *flavs; struct exp_flavor_info def_flavs[2]; @@ -2911,6 +2910,20 @@ out: return nfserr; } +static __be32 +nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_secinfo *secinfo) +{ + return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); +} + +static __be32 +nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_secinfo_no_name *secinfo) +{ + return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); +} + /* * The SETATTR encode routine is special -- it always encodes a bitmap, * regardless of the error status. @@ -3173,7 +3186,7 @@ static nfsd4_enc nfsd4_enc_ops[] = { [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, - [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo, + [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, |