This bug was fixed in the package linux - 5.0.0-16.17
---
linux (5.0.0-16.17) disco; urgency=medium
* linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)
* shiftfs: lock security sensitive superblock flags (LP: #1827122)
- SAUCE: shiftfs: lock down certain superblock flags
This bug was fixed in the package linux - 5.0.0-16.17
---
linux (5.0.0-16.17) disco; urgency=medium
* linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)
* shiftfs: lock security sensitive superblock flags (LP: #1827122)
- SAUCE: shiftfs: lock down certain superblock flags
disco verification:
ubuntu@d06-4:~$ cat /proc/version
Linux version 5.0.0-16-generic (buildd@bos02-arm64-013) (gcc version 8.3.0
(Ubuntu/Linaro 8.3.0-6ubuntu1)) #17-Ubuntu SMP Wed May 15 10:54:19 UTC 2019
ubuntu@d06-4:~$ sudo dmesg -c > /dev/null
ubuntu@d06-4:~$ echo function | sudo tee
/sys/kern
This bug is awaiting verification that the 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-
disco' to 'verification-done-disco'. If the problem still exists, change
the tag 'verificati
** Changed in: linux (Ubuntu Disco)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1822871
Title:
enabling ftrace on Hi1620 CS causes an Oops
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Disco)
Status: New => In Progress
** Changed in: linux (Ubuntu Disco)
Assignee: (unassigned) => dann frazier (dannf)
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** Description changed:
[Impact]
Attempting to enable the function tracer causes an Oops. This impacts the
current disco kernel, as well as latest upstream
(@5e7a8ca319268a70a6c7c3c1fde5bea38e1e5539).
This is 100% reproducible on D06 CS systems, but not reproducible on D06
ES systems
This patch resolves the problem for me, thx Ard!
https://patchwork.kernel.org/patch/10899313/
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https://bugs.launchpad.net/bugs/1822871
Title:
enabling ftrace on Hi1620 CS
On Wed, Apr 10, 2019 at 11:01 AM Ard Biesheuvel
wrote:
>
> On Tue, 9 Apr 2019 at 16:30, dann frazier wrote:
> >
> > Yeah, no crash anymore - thanks Ard!
> >
> > ubuntu@d06-4:~$ echo function | sudo tee
> > /sys/kernel/debug/tracing/current_tracer
> > function
> > [ 72.778123] ftrace: far branc
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => dann frazier (dannf)
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https://bugs.launchpad.net/bugs/1822871
Title:
enabling ftrace on Hi1620 CS causes an Oop
On Tue, 9 Apr 2019 at 16:30, dann frazier wrote:
>
> Yeah, no crash anymore - thanks Ard!
>
> ubuntu@d06-4:~$ echo function | sudo tee
> /sys/kernel/debug/tracing/current_tracer
> function
> [ 72.778123] ftrace: far branches to multiple entry points unsupported
> inside a single module
>
> ^ I
[ 72.778123] ftrace: far branches to multiple entry points unsupported inside
a single module
[ 72.786657] WARNING: CPU: 121 PID: 3299 at
/home/ubuntu/linux-5.0.0/kernel/trace/ftrace.c:2008 ftrace_bug+0xb0/0x2b0
[ 72.786662] Modules linked in: nls_iso8859_1 ipmi_ssif joydev input_leds
tpm_
Yeah, no crash anymore - thanks Ard!
ubuntu@d06-4:~$ echo function | sudo tee
/sys/kernel/debug/tracing/current_tracer
function
[ 72.778123] ftrace: far branches to multiple entry points unsupported inside
a single module
^ I assume this is expected
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Does this fix the issue?
https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?h
=for-next/fixes&id=5a3ae7b314a2259b1188b22b392f5eba01e443ee
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https://bugs.l
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1822871
Title:
enabling ftrace on Hi1620 CS causes an Oops
Status in
** Summary changed:
- enabling ftrace on Hi1620 causes an Oops
+ enabling ftrace on Hi1620 CS causes an Oops
** Description changed:
[Impact]
Attempting to enable the function tracer causes an Oops. This impacts the
current disco kernel, as well as latest upstream
(@5e7a8ca319268a70a6c7c3c
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