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| author | Christoph Hellwig <hch@infradead.org> | 2014-01-30 06:01:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-30 09:37:49 -0800 |
| commit | 5f13ee9c1ce87b3c99928ab33ef43a2c0d3fd220 (patch) | |
| tree | 4f40ff795f8e23212f0a93f0ebf8345c34347edb /fs/nfs/nfs3proc.c | |
| parent | 9b0cd304f26b9fca140de15deeac2bf357d1f388 (diff) | |
| download | lwn-5f13ee9c1ce87b3c99928ab33ef43a2c0d3fd220.tar.gz lwn-5f13ee9c1ce87b3c99928ab33ef43a2c0d3fd220.zip | |
nfs: fix xattr inode op pointers when disabled
Chris Mason reported a NULL pointer derefernence in generic_getxattr()
that was due to sb->s_xattr being NULL.
The reason is that the nfs #ifdef's for ACL support were misplaced, and
the nfs3 inode operations had the xattr operation pointers set up, even
though xattrs were not actually supported. As a result, the xattr code
was being called without the infrastructure having been set up.
Move the #ifdef's appropriately.
Reported-and-tested-by: Chris Mason <clm@fb.com>
Acked-by: Al Viro viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nfs/nfs3proc.c')
| -rw-r--r-- | fs/nfs/nfs3proc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index d2255d705421..aa9bc973f36a 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -924,11 +924,11 @@ static const struct inode_operations nfs3_dir_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, +#ifdef CONFIG_NFS_V3_ACL .listxattr = generic_listxattr, .getxattr = generic_getxattr, .setxattr = generic_setxattr, .removexattr = generic_removexattr, -#ifdef CONFIG_NFS_V3_ACL .get_acl = nfs3_get_acl, .set_acl = nfs3_set_acl, #endif @@ -938,11 +938,11 @@ static const struct inode_operations nfs3_file_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, +#ifdef CONFIG_NFS_V3_ACL .listxattr = generic_listxattr, .getxattr = generic_getxattr, .setxattr = generic_setxattr, .removexattr = generic_removexattr, -#ifdef CONFIG_NFS_V3_ACL .get_acl = nfs3_get_acl, .set_acl = nfs3_set_acl, #endif |