Sasha Levin 12663bfc97
net: unix: allow set_peek_off to fail ...
unix_dgram_recvmsg() will hold the readlock of the socket until recv
is complete.
In the same time, we may try to setsockopt(SO_PEEK_OFF) which will hang until
unix_dgram_recvmsg() will complete (which can take a while) without allowing
us to break out of it, triggering a hung task spew.
Instead, allow set_peek_off to fail, this way userspace will not hang.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com >
Acked-by: Pavel Emelyanov <xemul@parallels.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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