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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-09-01 07:27:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-21 12:38:01 +0200 |
| commit | cc3bca2110ac85cd964da997ef83d84cab0d49fb (patch) | |
| tree | 5b219ae88c653b5f08e07a0f76cc19cb05e6da7e /fs | |
| parent | 89bca739d3b70e9b14c146ca90a4230d62f561df (diff) | |
| download | linux-stable-cc3bca2110ac85cd964da997ef83d84cab0d49fb.tar.gz linux-stable-cc3bca2110ac85cd964da997ef83d84cab0d49fb.tar.bz2 linux-stable-cc3bca2110ac85cd964da997ef83d84cab0d49fb.zip | |
nfsd: Fix a memory leak in an error handling path
[ Upstream commit fd1ef88049de09bc70d60b549992524cfc0e66ff ]
If this memdup_user() call fails, the memory allocated in a previous call
a few lines above should be freed. Otherwise it leaks.
Fixes: 6ee95d1c8991 ("nfsd: add support for upcall version 2")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4recover.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index c634483d85d2..8f24485e0f04 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -815,8 +815,10 @@ __cld_pipe_inprogress_downcall(const struct cld_msg_v2 __user *cmsg, princhash.data = memdup_user( &ci->cc_princhash.cp_data, princhashlen); - if (IS_ERR_OR_NULL(princhash.data)) + if (IS_ERR_OR_NULL(princhash.data)) { + kfree(name.data); return -EFAULT; + } princhash.len = princhashlen; } else princhash.len = 0; |