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NFS: Don't leak in nfs_proc_symlink()

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Hi,

In fs/nfs/proc.c::nfs_proc_symlink() we will leak memory if either
nfs_alloc_fhandle() or nfs_alloc_fattr() returns NULL but the other one
doesn't.
This patch ensures memory allocated by one when the other fails is always
released (this is safe since nfs_free_fattr() and nfs_free_fhandle() both
call kfree which deals gracefully with NULL pointers).

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jesper Juhl 2010-12-24 22:22:37 +00:00 committed by Trond Myklebust
parent 1174dd1f89
commit 878215feb8
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/proc.c
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@ -458,7 +458,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
fattr = nfs_alloc_fattr();
status = -ENOMEM;
if (fh == NULL || fattr == NULL)
goto out;
goto out_free;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
@ -471,6 +471,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
if (status == 0)
status = nfs_instantiate(dentry, fh, fattr);
out_free:
nfs_free_fattr(fattr);
nfs_free_fhandle(fh);
out: