Re: [lttng-dev] deadlock in ust baddr 2.4.0-rc1

2013-11-25 Thread Mathieu Desnoyers
- Original Message - > From: "Paul Woegerer" > To: "Mathieu Desnoyers" > Cc: "lttng-dev" > Sent: Monday, November 25, 2013 7:22:41 AM > Subject: Re: [lttng-dev] deadlock in ust baddr 2.4.0-rc1 > > I found a very simple way to prev

Re: [lttng-dev] deadlock in ust baddr 2.4.0-rc1

2013-11-25 Thread Woegerer, Paul
I found a very simple way to prevent the deadlock situation. Here again the jul sample that reproduces the issue: pwoegere@atv-pwoegere-l3:~/MGC/lttng2_stack_latest/lttng-ust/doc/examples/java-jul> ./run libust[2876/2877]: Error: Timed out waiting for lttng-sessiond (in lttng_ust_init() at lttng-

Re: [lttng-dev] deadlock in ust baddr 2.4.0-rc1

2013-11-25 Thread Woegerer, Paul
Hi Mathieu, Hi David, thanks for putting this together. I'm now able to reproduce the problem and I'm investigating options to circumvent the deadlock. I will keep you informed on any progress made. For the time being I will send a patch to prevent lttng_ust_baddr_statedump if environment-variab

[lttng-dev] deadlock in ust baddr 2.4.0-rc1

2013-11-24 Thread Mathieu Desnoyers
Hi Paul, We are facing a deadlock with the UST baddr feature in 2.4.0-rc1. Here is how to reproduce: Build UST ae5f44dbf46c87c1318fde8ab5b5a68048e5af08 by following doc/java-util-logging.txt Build tools 077df0b372f77833c1de2dd9f534dec9e75696de Install into system + run lttng-sessiond as user (t