Please ignore "Repeat to "make -j`nproc` deb-pkg" until you find the
offending commit." it's the other way to build a kernel.
Please install newly build kernel package, reboot and test. Then
continue the process with `git bisect good` or `git bisect bad`.
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I tried bisecting the kernel as described in #22. However, I used the
URL git://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/focal instead of
git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic,
I hope that's correct.
The fakeroot command works and builds the ker
I also have this problem, which I reported as a new bug 1886775 which is
probably just a duplicate of this bug. Same issue, -40 dies with NFS
with similar stack trace and similar timing, -39 is fine, and multiple
hardware has the identical issues.
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$ sudo apt build-dep linux
$ git clone
git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic
$ cd linux
$ git bisect start
$ git bisect good Ubuntu-5.4.0-39.43
$ git bisect bad Ubuntu-5.4.0-40.44
$ fakeroot debian/rules do_dkms_nvidia=false do_dkms_vbox=false
do_dkms_wireguard=f
Is there a tutorial available on how to bisect the kernel and install
and test the bisected version?
To me it seems the problem only occurs in connection with NFS. I could
not reproduce the problem when NFS is not used. However, after reading
data from NFS mounts the problem reliably occurs within
Would it be possible to bisect the kernel?
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal
Between tag Ubuntu-5.4.0-39.43 and Ubuntu-5.4.0-40.44.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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You received this bug notification because you are
Log from another machine:
[ 1388.217900] BUG: unable to handle page fault for address: 8cf4f6fc5d86
[ 1388.217907] #PF: supervisor read access in kernel mode
[ 1388.217908] #PF: error_code(0x) - not-present page
[ 1388.217910] PGD 75201067 P4D 75201067 PUD 0
[ 1388.217913] Oops: [#4]
apport information
** Tags added: apport-collected
** Description changed:
On kernel 5.4.0-40-generic in focal I'm getting errors like this on
several machines with different hardware in the first hour after boot:
Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for
ad
** Description changed:
- On kernel 5.4.0-40-generic in focal I'm getting errors like this on two
- machines with different hardware in the first hour after boot:
+ On kernel 5.4.0-40-generic in focal I'm getting errors like this on
+ several machines with different hardware in the first hour afte