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| author | Colin Ian King <colin.king@canonical.com> | 2020-01-06 16:17:34 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-01-15 18:54:31 +0300 |
| commit | e0b27d98bfed9cd9a22f96996bab24858646883d (patch) | |
| tree | e6963ce458c9b8d23abf96acdc7a2d48188c543d /fs/nfs/nfs4namespace.c | |
| parent | 474c4f306eefbb21b67ebd1de802d005c7d7ecdc (diff) | |
| download | linux-e0b27d98bfed9cd9a22f96996bab24858646883d.tar.xz | |
NFS: Add missing null check for failed allocation
Currently the allocation of buf is not being null checked and
a null pointer dereference can occur when the memory allocation fails.
Fix this by adding a check and returning -ENOMEM.
Addresses-Coverity: ("Dereference null return")
Fixes: 6d972518b821 ("NFS: Add fs_context support.")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs4namespace.c')
| -rw-r--r-- | fs/nfs/nfs4namespace.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 10e9e1887841..de6875a9b391 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -137,6 +137,9 @@ static int nfs4_validate_fspath(struct dentry *dentry, int n; buf = kmalloc(4096, GFP_KERNEL); + if (!buf) + return -ENOMEM; + path = nfs4_path(dentry, buf, 4096); if (IS_ERR(path)) { kfree(buf); |