Bug #4737

dlmgtd process deadlocks.

Added by Daniel Barney over 3 years ago.

Status:NewStart date:2014-04-09
Priority:UrgentDue date:
Assignee:-% Done:

0%

Category:cmd - userland programs
Target version:-
Difficulty:Medium Tags:needs-triage

Description

When performing the dlmgmt_zonehalt door command, a global write lock is held across a system call. The system call then performs a door_upcall back to the dlmgmtd process which tries to acquire a read lock.

Which results in a deadlock. But only occasionally.

I have a core dump of the dlmgmt process, but it is over 4 Mb so I can't attach it.

Attached is a set of mdv commands I ran to debug the issue.

mdb.txt Magnifier - mdb commands run (17.4 KB) Daniel Barney, 2014-04-09 08:14 PM

Also available in: Atom