[Devel] [PATCH RH7] fuse: pcs: missing timeout at authentication phase

[Alexey Kuznetsov]

For hot update. If it is possible it should be pushed to customers as kpatch.

It was forgotten at kernel implementation since connect
has been move to kernel. See commit b94eed73ce781976a7006f6ddb49fdb26f5d6ef1

The result are accidental lockups at kernel level.
Plain luck this happens not so frequently. It is necessary
that a CS dies, its port was taken by another service, which
does not respond to garbage messages, and that kernel decided
to connect to CS without reacquiring new map, which is also
rather an exception. Yet we were hit bad after 2 years.

Affects: #VSTOR-62165
https://pmc.acronis.work/browse/VSTOR-62165

Signed-off-by: Alexey Kuznetsov <kuznet at acronis.com>
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