* iscsi related softlockup (3.0 rc3)
@ 2011-06-20 20:00 Dave Jones
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From: Dave Jones @ 2011-06-20 20:00 UTC (permalink / raw)
To: netdev
I made some changes to my syscall fuzzer as it hasn't been turning up anything
interesting since the last lot of problems got fixed. I seem to have found
a way to get iscsi really confused, to the point that the soft-lockup detector
kicks in, and then the rcu stall detector.
http://davej.fedorapeople.org/iscsi-lockup.txt is the dmesg from the box.
sysrq was working, but I couldn't ssh into the box, or even log in on the console.
I had ssh sessions already logged into the box which were completely wedged.
I don't have any iscsi setup configured on this machine, the fuzzer just hit upon
that protocol randomly. If it wasn't for the fact that the machine wedged I wouldn't
be overly concerned, but it seems that something got into a state that just consumed
all cpu time.
Dave
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2011-06-20 20:00 iscsi related softlockup (3.0 rc3) Dave Jones
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