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| author | J. Bruce Fields <bfields@redhat.com> | 2018-12-20 10:35:11 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-01-02 12:05:19 -0500 |
| commit | 81c88b18de1f11f70c97f28ced8d642c00bb3955 (patch) | |
| tree | f8896b7395911ea806810ebeda4c548163df968c /net | |
| parent | c2c7d84fd173aff121ffd45cf15277eff43348d3 (diff) | |
| download | lwn-81c88b18de1f11f70c97f28ced8d642c00bb3955.tar.gz lwn-81c88b18de1f11f70c97f28ced8d642c00bb3955.zip | |
sunrpc: handle ENOMEM in rpcb_getport_async
If we ignore the error we'll hit a null dereference a little later.
Reported-by: syzbot+4b98281f2401ab849f4b@syzkaller.appspotmail.com
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/rpcb_clnt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index c7872bc13860..08b5fa4a2852 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -771,6 +771,12 @@ void rpcb_getport_async(struct rpc_task *task) case RPCBVERS_3: map->r_netid = xprt->address_strings[RPC_DISPLAY_NETID]; map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC); + if (!map->r_addr) { + status = -ENOMEM; + dprintk("RPC: %5u %s: no memory available\n", + task->tk_pid, __func__); + goto bailout_free_args; + } map->r_owner = ""; break; case RPCBVERS_2: @@ -793,6 +799,8 @@ void rpcb_getport_async(struct rpc_task *task) rpc_put_task(child); return; +bailout_free_args: + kfree(map); bailout_release_client: rpc_release_client(rpcb_clnt); bailout_nofree: |