The Eoan Ermine has reached end of life, so this bug will not be fixed
for that release
** Changed in: linux (Ubuntu Eoan)
Status: Fix Committed => Won't Fix
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Still affecting 5.0.0-1046.47 GKE
** Tags added: sru-20200720
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https://bugs.launchpad.net/bugs/1866972
Title:
ftrace test failed with Register/unregister many kprobe events in
Although Disco has already reached EOL, but we still need to support 5.0 kernel.
This issue still exist in 5.0:
* 5.0.0-1067.72 (OEM-OSP1)
* 5.0.0-60.64~18.04.1
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Looks like fixed in 5.3.0-1026.28~18.04.1 - aws
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https://bugs.launchpad.net/bugs/1866972
Title:
ftrace test failed with Register/unregister many kprobe events in
For the record this is still affecting 5.0 kernel
5.0.0-53.57~18.04.1-generic
** Tags added: 5.0 sru-20200608
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https://bugs.launchpad.net/bugs/1866972
Title:
ftrace test failed with
** Changed in: linux (Ubuntu Eoan)
Status: In Progress => Fix Committed
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Title:
ftrace test failed with Register/unregister many kprobe
For what matters, the alternative would probably to pick
fe60b0ce8e7335269722ec080173a9411a9d58a5. More exactly, all the
following commits:
41af3cf587f476f9a879b08219324c8b456e6a4c tracing/uprobe: Add multi-probe per
uprobe event support
60d53e2c3b75e79c83970fe73db79123d9462c7c tracing/probe:
** Description changed:
+ [Impact]
+ kernel selftest ftrace will fail with:
+ [42] Register/unregister many kprobe events [FAIL]
+
+ [Test case]
+ Run that selftest with:
+ cd tools/testing/selftests/ftrace/
+ sudo make run_tests
+
+ [Regression potential]
+ The suggested fix only change the
Was observed on the linux-gcp 5.3 kernel:
04/14 09:54:08 DEBUG| utils:0153| [stdout] # [45] Register/unregister many
kprobe events [FAIL]
5.3.0-1018.19~18.04.1 linux-gcp-5.3
** Tags added: gcp
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** Changed in: ubuntu-kernel-tests
Status: Invalid => Triaged
** Summary changed:
- ftrace test failed with Register/unregister many kprobe events in
ubuntu_kernel_selftests on B-AWS-5.0 / E
+ ftrace test failed with Register/unregister many kprobe events in
ubuntu_kernel_selftests on
Please note disco has been EOL, if the failures are still exhibited with
another release, lets open a new bug as this has been stale for quite
some time
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No longer see a failure with KProbe events on AWS for SRU cycle
2020.04.06 : 5.3.0-1017.18
[41] Kprobe dynamic event with function tracer [PASS]
[42] Kprobe event parser error log check[PASS]
[43] Kretprobe dynamic event with arguments [PASS]
** Changed in: ubuntu-kernel-tests
** Summary changed:
- ftrace test failed with Register/unregister many kprobe events in
ubuntu_kernel_selftests on B-AWS-5.0
+ ftrace test failed with Register/unregister many kprobe events in
ubuntu_kernel_selftests on B-AWS-5.0 / E
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This can be found on Eoan 5.3.0-43.36 as well.
** Tags added: 5.3 eoan sru-20200316
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Title:
ftrace test failed with Register/unregister many
With /bin/sh in ftrace/test.d/kprobe/multiple_kprobes.tc changed to
/bin/bash this is still failing with the upstream repo.
Run this test with the following command to see more debug info:
./ftracetest test.d/kprobe/multiple_kprobes.tc -v
Test failed because the wc -l result for kprobe_events
Does it fail if you change /bin/sh to point to bash instead of dash?
I know some ftrace tests failed because of how 'echo' would behave
differently between those two shells, and that using printf would be
better, and that Seth has already sent a patch for that upstream.
I recall this test being
I have 5.0.0-1027-aws tested against with the latest upstream code
(f35111a9 https://github.com/torvalds/linux.git)
And this is still failing:
# [51] Register/unregister many kprobe events [FAIL]
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I have the proposed kernel tested with the tool in 5.0.0-1025-aws
kernel, and it will pass.
But with the tool in 5.0.0-1027-aws kernel it will fail, it looks like a
testing tool issue to me.
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux
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