| 2020-01-08 17:58:14 |
Ioanna Alifieraki |
bug |
|
|
added bug |
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
nominated for series |
|
Ubuntu Focal |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
bug task added |
|
linux (Ubuntu Focal) |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
nominated for series |
|
Ubuntu Bionic |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
bug task added |
|
linux (Ubuntu Bionic) |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
nominated for series |
|
Ubuntu Eoan |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
bug task added |
|
linux (Ubuntu Eoan) |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
nominated for series |
|
Ubuntu Xenial |
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| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
bug task added |
|
linux (Ubuntu Xenial) |
|
| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
nominated for series |
|
Ubuntu Disco |
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| 2020-01-08 17:58:29 |
Ioanna Alifieraki |
bug task added |
|
linux (Ubuntu Disco) |
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| 2020-01-08 17:58:40 |
Ioanna Alifieraki |
linux (Ubuntu Xenial): importance |
Undecided |
Medium |
|
| 2020-01-08 17:58:43 |
Ioanna Alifieraki |
linux (Ubuntu Bionic): importance |
Undecided |
Medium |
|
| 2020-01-08 17:58:46 |
Ioanna Alifieraki |
linux (Ubuntu Disco): importance |
Undecided |
Medium |
|
| 2020-01-08 17:58:49 |
Ioanna Alifieraki |
linux (Ubuntu Eoan): importance |
Undecided |
Medium |
|
| 2020-01-08 17:58:52 |
Ioanna Alifieraki |
linux (Ubuntu Focal): importance |
Undecided |
Medium |
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| 2020-01-08 17:58:54 |
Ioanna Alifieraki |
linux (Ubuntu Focal): assignee |
|
Ioanna Alifieraki (joalif) |
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| 2020-01-08 17:58:56 |
Ioanna Alifieraki |
linux (Ubuntu Eoan): assignee |
|
Ioanna Alifieraki (joalif) |
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| 2020-01-08 17:58:59 |
Ioanna Alifieraki |
linux (Ubuntu Disco): assignee |
|
Ioanna Alifieraki (joalif) |
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| 2020-01-08 17:59:01 |
Ioanna Alifieraki |
linux (Ubuntu Bionic): assignee |
|
Ioanna Alifieraki (joalif) |
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| 2020-01-08 17:59:02 |
Ioanna Alifieraki |
linux (Ubuntu Xenial): assignee |
|
Ioanna Alifieraki (joalif) |
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| 2020-01-08 18:00:08 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2020-01-08 18:00:10 |
Ubuntu Kernel Bot |
linux (Ubuntu Bionic): status |
New |
Incomplete |
|
| 2020-01-08 18:00:12 |
Ubuntu Kernel Bot |
linux (Ubuntu Disco): status |
New |
Incomplete |
|
| 2020-01-08 18:00:15 |
Ubuntu Kernel Bot |
linux (Ubuntu Eoan): status |
New |
Incomplete |
|
| 2020-01-08 18:00:18 |
Ubuntu Kernel Bot |
linux (Ubuntu Xenial): status |
New |
Incomplete |
|
| 2020-01-08 18:01:37 |
Ioanna Alifieraki |
description |
[Description]
Commit a97955844807 ("ipc,sem: remove uneeded sem_undo_list lock usage
in exit_sem()") removes a lock that is needed. This leads to a process
looping infinitely in exit_sem() and can also lead to a crash. |
[Description]
Commit a97955844807 ("ipc,sem: remove uneeded sem_undo_list lock usage
in exit_sem()") removes a lock that is needed. This leads to a process
looping infinitely in exit_sem() and can also lead to a crash.
[Test case]
Using the reproducer found in [1] is fairly easy to reach a point where
one of the child processes is looping infinitely in exit_sem between
for(;;) and if (semid == -1) block, while it's trying to free its last
sem_undo structure which has already been freed by freeary().
Once commit a97955844807 ("ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()") the issue is not reproducible any more.
[Other]
Patch submitted upstream :
https://lkml.org/lkml/2019/12/11/1718
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1694779 |
|
| 2020-01-08 18:02:14 |
Ioanna Alifieraki |
linux (Ubuntu Xenial): status |
Incomplete |
In Progress |
|
| 2020-01-08 18:02:17 |
Ioanna Alifieraki |
linux (Ubuntu Bionic): status |
Incomplete |
In Progress |
|
| 2020-01-08 18:02:20 |
Ioanna Alifieraki |
linux (Ubuntu Disco): status |
Incomplete |
In Progress |
|
| 2020-01-08 18:02:23 |
Ioanna Alifieraki |
linux (Ubuntu Eoan): status |
Incomplete |
In Progress |
|
| 2020-01-08 18:02:25 |
Ioanna Alifieraki |
linux (Ubuntu Focal): status |
Incomplete |
In Progress |
|
| 2020-01-10 23:25:52 |
Terry Rudd |
bug |
|
|
added subscriber Terry Rudd |
| 2020-01-13 13:59:20 |
Pedro Principeza |
bug |
|
|
added subscriber Gary Bondarevsky |
| 2020-03-11 05:59:09 |
Khaled El Mously |
linux (Ubuntu Xenial): status |
In Progress |
Fix Committed |
|
| 2020-03-11 05:59:12 |
Khaled El Mously |
linux (Ubuntu Bionic): status |
In Progress |
Fix Committed |
|
| 2020-03-11 05:59:14 |
Khaled El Mously |
linux (Ubuntu Disco): status |
In Progress |
Fix Committed |
|
| 2020-03-11 05:59:16 |
Khaled El Mously |
linux (Ubuntu Eoan): status |
In Progress |
Fix Committed |
|
| 2020-03-12 10:52:38 |
Ubuntu Kernel Bot |
tags |
|
verification-needed-focal |
|
| 2020-03-16 23:19:02 |
Launchpad Janitor |
linux (Ubuntu Focal): status |
In Progress |
Fix Released |
|
| 2020-03-16 23:19:02 |
Launchpad Janitor |
cve linked |
|
2019-19076 |
|
| 2020-03-17 06:44:38 |
Ubuntu Kernel Bot |
tags |
verification-needed-focal |
verification-needed-focal verification-needed-xenial |
|
| 2020-03-17 16:13:50 |
Ubuntu Kernel Bot |
tags |
verification-needed-focal verification-needed-xenial |
verification-needed-bionic verification-needed-focal verification-needed-xenial |
|
| 2020-03-17 17:33:44 |
Ubuntu Kernel Bot |
tags |
verification-needed-bionic verification-needed-focal verification-needed-xenial |
verification-needed-bionic verification-needed-eoan verification-needed-focal verification-needed-xenial |
|
| 2020-03-23 10:16:37 |
Ioanna Alifieraki |
bug watch added |
|
https://bugzilla.redhat.com/show_bug.cgi?id=1694779 |
|
| 2020-03-23 10:16:55 |
Ioanna Alifieraki |
tags |
verification-needed-bionic verification-needed-eoan verification-needed-focal verification-needed-xenial |
verification-done-bionic verification-needed-eoan verification-needed-focal verification-needed-xenial |
|
| 2020-03-23 10:21:33 |
Ioanna Alifieraki |
tags |
verification-done-bionic verification-needed-eoan verification-needed-focal verification-needed-xenial |
verification-done-bionic verification-done-eoan verification-needed-focal verification-needed-xenial |
|
| 2020-03-23 10:29:16 |
Ioanna Alifieraki |
tags |
verification-done-bionic verification-done-eoan verification-needed-focal verification-needed-xenial |
verification-done-bionic verification-done-eoan verification-done-xenial verification-needed-focal |
|
| 2020-03-23 10:36:17 |
Ioanna Alifieraki |
tags |
verification-done-bionic verification-done-eoan verification-done-xenial verification-needed-focal |
verification-done-bionic verification-done-eoan verification-done-focal verification-done-xenial |
|
| 2020-04-06 12:20:18 |
Launchpad Janitor |
linux (Ubuntu Eoan): status |
Fix Committed |
Fix Released |
|
| 2020-04-06 12:50:54 |
Launchpad Janitor |
linux (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2020-04-06 12:50:54 |
Launchpad Janitor |
cve linked |
|
2020-8428 |
|
| 2020-04-06 16:52:57 |
Launchpad Janitor |
linux (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
| 2020-04-06 16:52:57 |
Launchpad Janitor |
cve linked |
|
2020-8834 |
|
| 2020-07-02 19:54:16 |
Steve Langasek |
linux (Ubuntu Disco): status |
Fix Committed |
Won't Fix |
|
