* [GIT PULL] thread fixes v5.5-rc5
@ 2020-01-03 13:53 Christian Brauner
2020-01-03 19:25 ` pr-tracker-bot
0 siblings, 1 reply; 2+ messages in thread
From: Christian Brauner @ 2020-01-03 13:53 UTC (permalink / raw)
To: Linus Torvalds, Linux Kernel Mailing List
Hi Linus,
Here are two fixes:
/* Summary */
- Panic earlier when global init exits to generate useable coredumps.
Currently, when global init and all threads in its thread-group have exited
we panic via:
do_exit()
-> exit_notify()
-> forget_original_parent()
-> find_child_reaper()
This makes it hard to extract a useable coredump for global init from a
kernel crashdump because by the time we panic exit_mm() will have already
released global init's mm. We now panic slightly earlier. This has been
a problem in certain environments such as Android.
- Fix a race in assigning and reading taskstats for thread-groups with more
than one thread.
This patch has been waiting for quite a while since people disagreed on what
the correct fix was at first.
/* Testing */
No build failures or warnings were observed.
/* Conflicts */
At the time of creating this PR no merge conflicts were known.
The following changes since commit 219d54332a09e8d8741c1e1982f5eae56099de85:
Linux 5.4 (2019-11-24 16:32:01 -0800)
are available in the Git repository at:
git@gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux tags/for-linus-2020-01-03
for you to fetch changes up to 43cf75d96409a20ef06b756877a2e72b10a026fc:
exit: panic before exit_mm() on global init exit (2019-12-21 16:48:01 +0100)
Please consider pulling these changes from the signed for-linus-2020-01-03 tag.
Thanks and happy new year!
Christian
----------------------------------------------------------------
for-linus-2020-01-03
----------------------------------------------------------------
Christian Brauner (1):
taskstats: fix data-race
chenqiwu (1):
exit: panic before exit_mm() on global init exit
kernel/exit.c | 12 ++++++++----
kernel/taskstats.c | 30 +++++++++++++++++++-----------
2 files changed, 27 insertions(+), 15 deletions(-)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [GIT PULL] thread fixes v5.5-rc5
2020-01-03 13:53 [GIT PULL] thread fixes v5.5-rc5 Christian Brauner
@ 2020-01-03 19:25 ` pr-tracker-bot
0 siblings, 0 replies; 2+ messages in thread
From: pr-tracker-bot @ 2020-01-03 19:25 UTC (permalink / raw)
To: Christian Brauner; +Cc: Linus Torvalds, Linux Kernel Mailing List
The pull request you sent on Fri, 3 Jan 2020 14:53:03 +0100:
> git@gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux tags/for-linus-2020-01-03
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/d9c82fd8c89766f2cf1e667f663e8e8c25c12aee
Thank you!
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2020-01-03 19:25 ` pr-tracker-bot
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