Messages in this thread | | | Date | Thu, 8 Feb 2018 06:49:18 -0800 | From | Andi Kleen <> | Subject | Re: INFO: task hung in sync_blockdev |
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> > It seems multiple processes deadlocked on the bd_mutex. > > Unfortunately there's no backtrace for the lock acquisitions, > > so it's hard to see the exact sequence. > > Well, all in the report points to a situation where some IO was submitted > to the block device and never completed (more exactly it took longer than > those 120s to complete that IO). It would need more digging into the
Are you sure? I didn't think outstanding IO would take bd_mutex.
-Andi
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