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Subject2.1.32: ICMP port unreach not propagated?
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Hi all,

When trying out 2.1.32, I've been plagued by boots that seemed to hang
mysteriously during the init phase. The problem was that bash tried
to contact ypbind at a stage where loopback was up, but portmap wasn't
running. As far as I have traced it now, the error is eing propagated
to the UDP layer alright, but gets dropped there because it can't find
a matching socket (the UDP socket is unconnected, FWIW).

While looking at the ICMP handling, I found another possible trouble
spot in icmp.c's handling of unreachables. When receiving a broadcast
ICMP it intends to drop it. While it does free the skb, it does not
return immediately, so later code will get to play with corrupted memory.

Cheers
Olaf
--
Olaf Kirch | --- o --- Nous sommes du soleil we love when we play
okir@monad.swb.de | / | \ sol.dhoop.naytheet.ah kin.ir.samse.qurax
okir@lst.de +-------------------- Why Not?! -----------------------
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