[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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** Changed in: linux (Ubuntu)
Status: In Progress => Incomplete
** Changed in: linux (Ubuntu)
Assignee: Rafael David Tinoco (inaddy) => (unassigned)
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Unfortunately I received 2 other kdumps from the same user and it looks like
that other 2 kdumps were
happening because of a NULL dereference (3.2.0-79). I asked them to test latest
3.2 kernel + the fix
I commented above.
User still faced kdumps with latest 3.2 but only with khungtask
** Changed in: linux (Ubuntu)
Importance: Undecided => Critical
** Changed in: linux (Ubuntu)
Importance: Critical => Medium
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https://bugs.launchpad.net/bugs/1534413
Disconsider my previous analysis please. After disassembling carefully the java
process dump I could see that we had the instruction pointer at:
if (iter.task)
put_task_struct(iter.task);
Some instructions before a loop that could be a potential candidate for
deadlocks, which
I was
Because Precise 3.2.0-79 is missing debug symbols froms ddebs.ubuntu.com I had
to
compile a 3.2.0-79 kernel in a PPA and expect the symbols to be close to what
they
used to be in that version.
That led me to a wrong initial analysis that I document here for
historical purposes:
> 178
Disconsider my previous analysis please. After disassembling carefully
the java process dump I could see that we had the instruction pointer
at:
if (iter.task)
put_task_struct(iter.task);
Some instructions before a loop that could be a potential candidate for
deadlocks, which I was
Available PPA for testing purposes:
https://launchpad.net/~inaddy/+archive/ubuntu/lp1534413
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https://bugs.launchpad.net/bugs/1534413
Title:
Precise: lockup during fadvise
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