| commit | df60446cd1fb487becd1f36f4c0da9e0e523c0cf | [log] [tgz] |
|---|---|---|
| author | Scott Mayhew <smayhew@redhat.com> | Fri Jul 10 16:33:07 2020 -0400 |
| committer | Chuck Lever <chuck.lever@oracle.com> | Mon Jul 13 17:28:46 2020 -0400 |
| tree | 2d392c6211a92f122ed86f533bad8aa089ced951 | |
| parent | 94415b06eb8aed13481646026dc995f04a3a534a [diff] |
nfsd: avoid a NULL dereference in __cld_pipe_upcall()
If the rpc_pipefs is unmounted, then the rpc_pipe->dentry becomes NULL
and dereferencing the dentry->d_sb will trigger an oops. The only
reason we're doing that is to determine the nfsd_net, which could
instead be passed in by the caller. So do that instead.
Fixes: 11a60d159259 ("nfsd: add a "GetVersion" upcall for nfsdcld")
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>