Allan Smith(deleted)
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ppp and io-pkt-v4-hc stall issues
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Allan Smith(deleted)
06/09/2011 3:49 PM
post86536
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ppp and io-pkt-v4-hc stall issues
In a test setup I am seeing an issue where if I establish a ppp connection via two serial ports on different computers,
when the client ppp connection is slayed, io-pkt-v4-hc winds up stuck waiting on a CONDVAR (see below).
pidin when problem happens (attached is full pidin output):
pid tid name prio STATE Blocked
131090 1 sbin/io-pkt-v4-hc 21o SIGWAITINFO
131090 2 sbin/io-pkt-v4-hc 20o REPLY 294931
131090 3 sbin/io-pkt-v4-hc 21o CONDVAR (0x812bf80)
131090 4 sbin/io-pkt-v4-hc 21o CONDVAR (0x812bf80)
--snip--
The ppp connection is invoked in a pretty standard way ie
pppd /dev/ser1 9600 192.0.32.2:192.0.32.1
and on the client
pppd /dev/ser1 9600 192.0.32.1:192.0.32.2
Does anyone have any idea what a serial driver could do to cause ppp/io-pkt to get stuck on a CONDVAR?
I know the CONDVAR value is the address but any idea how to track down the processes that are associated with it?
BTW this is running on QNX 6.5.0
Thanks
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