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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-07-10 15:33:01 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-07-10 15:58:55 -0400 |
| commit | eeee245268c951262b861bc1be4e9dc812352499 (patch) | |
| tree | 055c5d4ea0406bbb5457052ee85148b5f9746cf7 /drivers | |
| parent | rpc_pipe: rpc_dir_inode_operations can be static (diff) | |
| download | linux-dev-eeee245268c951262b861bc1be4e9dc812352499.tar.xz linux-dev-eeee245268c951262b861bc1be4e9dc812352499.zip | |
SUNRPC: Fix a deadlock in rpc_client_register()
Commit 384816051ca9125cd54750e59c780c2a2655fa4f (SUNRPC: fix races on
PipeFS MOUNT notifications) introduces a regression when we call
rpc_setup_pipedir() with RPCSEC_GSS as the auth flavour.
By calling rpcauth_create() while holding the sn->pipefs_sb_lock, we
end up deadlocking in gss_pipes_dentries_create_net().
Fix is to register the client and release the mutex before calling
rpcauth_create().
Reported-by: Weston Andros Adamson <dros@netapp.com>
Tested-by: Weston Andros Adamson <dros@netapp.com>
Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: <stable@vger.kernel.org> # : 3848160: SUNRPC: fix races on PipeFS MOUNT
Cc: <stable@vger.kernel.org> # : e73f4cc: SUNRPC: split client creation
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions