= bionic verification =
ubuntu@d06-4:~$ cat /proc/version
Linux version 4.15.0-179-generic (buildd@bos02-arm64-025) (gcc version 7.5.0
(Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)) #188-Ubuntu SMP Tue May 10 20:51:17 UTC
2022
ubuntu@d06-4:~$ grep domain2 /proc/schedstat | wc -l
128
ubuntu@d06-4:~$ grep
** Description changed:
[Impact]
The LTP cpuset_sched_domains test, authored by Miao Xie, fails on a Kunpeng920
server that has 4 NUMA nodes:
- https://launchpad.net/bugs/1951289
+ https://launchpad.net/bugs/1951289
This does appear to be a real bug. /proc/schedstat displays 4
This bug is awaiting verification that the linux/4.15.0-179.188 kernel
in -proposed solves the problem. Please test the kernel and update this
bug with the results. If the problem is solved, change the tag
'verification-needed-bionic' to 'verification-done-bionic'. If the
problem still exists,
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1951289
Title:
ubuntu_ltp_controllers:cpuset_sched_domains: tests
** Description changed:
- On scobee-kernel(arm64) with hirsute:linux(5.11.0-41.45) for
- sru-20211108 there are several reports about the sched domain not
- covering the full range. The same does not happen on kuzzle. But 32 is a
- bit of a suspicious number.
+ [Impact]
+ The LTP
** Changed in: kunpeng920/ubuntu-20.04
Status: In Progress => Fix Committed
** Changed in: kunpeng920/ubuntu-18.04-hwe
Status: In Progress => Fix Committed
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5.4.183 has now been merged into focal
** Changed in: linux (Ubuntu Focal)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1951289
Title:
Released upstream in 5.4.183. The inclusion of the changes from that
stable release is being tracked in bug 1969239.
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https://bugs.launchpad.net/bugs/1951289
Title:
Not a bug in the test.
** Changed in: linux (Ubuntu Hirsute)
Status: Incomplete => Won't Fix
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
** Changed in: linux (Ubuntu Bionic)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu Focal)
After some debugging, I realized the above is the same issue that this
commit fixed upstream:
commit 71e5f6644fb2f3304fcb310145ded234a37e7cc1
Author: Dietmar Eggemann
Date: Mon Feb 1 10:53:53 2021 +0100
sched/topology: Fix sched_domain_topology_level alloc in
sched_init_numa()
I've
Here's a decoded backtrace of the 5.0-rc5+ crash (commit 41ceb5e8 w/ the
fix from commit 620a6dc4075 applied), which looks quite plausible.
static void __free_domain_allocs(struct s_data *d, enum s_alloc what,
const struct cpumask *cpu_map)
{
[...]
1196case
I came back to this and found that I now can get a failure w/ error
messages when applying the fix (see comment #4) to bionic - see crash
log below. So, I figured I could just bisect between v4.15 and v5.11
upstream w/ the fix applied and and figure out what other change(s) are
required to avoid
** Changed in: kunpeng920
Importance: Undecided => Low
** Changed in: kunpeng920
Assignee: (unassigned) => dann frazier (dannf)
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Title:
The fix above also cherry-picks back to bionic, but strangely it causes
the bionic kernel to fail to boot. I don't see any kernel messages after
the EFI stub. I tried adding "earlycon" to get more debug info, but that
somehow avoids the problem and boots fine w/ the fix. With earlycon, I
can
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance:
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