net/smc: check for valid ib_client_data
In smc_ib_remove_dev() check if the provided ib device was actually initialized for SMC before. Reported-by:<syzbot+84484ccebdd4e5451d91@syzkaller.appspotmail.com> Fixes: a4cf0443 ("smc: introduce SMC as an IB-client") Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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