SUNRPC: fix use-after-free in rpc_free_client_work()

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Parts of rpc_free_client() were recently moved to
a separate rpc_free_clent_work().  This introduced
a use-after-free as rpc_clnt_remove_pipedir() calls
rpc_net_ns(), and that uses clnt->cl_xprt which has already
been freed.
So move the call to xprt_put() after the call to
rpc_clnt_remove_pipedir().

Reported-by: syzbot+22b5ef302c7c40d94ea8@syzkaller.appspotmail.com
Fixes: 7c4310ff56 ("SUNRPC: defer slow parts of rpc_free_client() to a workqueue.")
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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NeilBrown 2020-05-09 07:25:11 +10:00 • committed by Trond Myklebust

parent 2ef96a5bb1

commit 31e9a7f353

1 changed files with 1 additions and 1 deletions

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net/sunrpc/clnt.c

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