Linux-rt-users archive on
 help / color / Atom feed
* RT kernel v4.14 NULL pointer dereferences
@ 2020-06-16  7:30 Roosen Henri
  0 siblings, 0 replies; only message in thread
From: Roosen Henri @ 2020-06-16  7:30 UTC (permalink / raw)
  To: linux-rt-users

[-- Attachment #1: Type: text/plain, Size: 994 bytes --]

Hi RT-experts,

Duration tests with RT enabled v4.14 kernels on our ARM iMX6Q systems
are showing "Unable to handle kernel NULL pointer dereference at
virtual address" after running for some months. The same tests on NON-
RT kernels don't show any problem and have been running without any
problems for more than 20 months now.

I've been updating the tests from time to time with more recent
kernels. Testing is basically done with cyclictest, in parallel with
some load scripts/hackbench. Please have a look at the kernel traces:
4.14.71-rt44  ->
4.14.106-rt56 ->
4.14.146-rt67 ->

I've seen the v4.14-rt branch got some fixes, so my questions are:
1) is problem I'm facing known and fixed in v4.14-rt, or
2) is the problem I'm seeing a new issue probably still unfixed in
4.14.183-rt83 (which I'm testing right now)?

Any help is highly appreciated!


[-- Attachment #2: smime.p7s --]
[-- Type: application/x-pkcs7-signature, Size: 3608 bytes --]

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, back to index

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-16  7:30 RT kernel v4.14 NULL pointer dereferences Roosen Henri

Linux-rt-users archive on

Archives are clonable:
	git clone --mirror linux-rt-users/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rt-users linux-rt-users/ \
	public-inbox-index linux-rt-users

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone