LTTng bugs repository

10/13/2019

05:32 PM LTTng-UST Bug #1204: Application is aborted immediately with coredump if ust-fd is preload

Mathieu Desnoyers wrote:
> Applied in changeset commit:lttng-ust|793d29c9367a58c2a368bc1ccb11b01c2d2bdac2.
Thank ... Tai Dinh

10/11/2019

03:52 AM LTTng-UST Bug #1204 (Resolved): Application is aborted immediately with coredump if ust-fd is preload

Hi,
After below commit everything just stop working.
commit 48a143c09cc97bf7a2ace811277e7d60b294b5f6 (HEAD -> m... Tai Dinh

10/07/2019

12:20 PM LTTng-UST Bug #1199: close() implementation of ust-fd is not async-signal-safe causing child processes to hang forever after fork()

Mathieu Desnoyers wrote:
> With respect to the documentation of fork, daemon, clone(!(flags & CLONE_VM)) vs exec(), ... Tai Dinh

12:20 PM LTTng-UST Bug #1199: close() implementation of ust-fd is not async-signal-safe causing child processes to hang forever after fork()

Mathieu Desnoyers wrote:
> Indeed, unlocking a "fast" mutex which has been locked by a different thread is an undefi... Tai Dinh

10/04/2019

05:03 PM LTTng-UST Bug #1201: ust_fd close() causes deadlock for any multithreaded application

Tai Dinh wrote:
> Mathieu Desnoyers wrote:
> > The attached patch implements the first approach (disable pthread ca... Tai Dinh

04:23 PM LTTng-UST Bug #1201: ust_fd close() causes deadlock for any multithreaded application

Mathieu Desnoyers wrote:
> The attached patch implements the first approach (disable pthread cancellation around loc... Tai Dinh

09:45 AM LTTng-UST Bug #1201 (Resolved): ust_fd close() causes deadlock for any multithreaded application

Hi,
I discovered today an even more serious problem with the current implementation of close/flose().
It does not... Tai Dinh

04:19 PM LTTng-UST Bug #1199: close() implementation of ust-fd is not async-signal-safe causing child processes to hang forever after fork()

Mathieu Desnoyers wrote:
> About your documentation question:
>
> "The documentation is also need to be updated s... Tai Dinh

04:08 PM LTTng-UST Bug #1199: close() implementation of ust-fd is not async-signal-safe causing child processes to hang forever after fork()

Mathieu Desnoyers wrote:
> About the question related to holding the mutex across fork:
>
> You cite:
>
> "Att... Tai Dinh

05:24 AM LTTng-UST Bug #1199: close() implementation of ust-fd is not async-signal-safe causing child processes to hang forever after fork()

Mathieu Desnoyers wrote:
> Can you test the attached patch ? So far it seems to run fine here.
Sure, I'll spend s... Tai Dinh