It happened again. This is a production server, so I downgraded the
kernel to 5.15.0-83-generic.
Sep 12 15:45:24 pangolin kernel: [23647.420252] [ cut here
]
Sep 12 15:45:24 pangolin kernel: [23647.420257] WARNING: CPU: 3 PID: 115998 at
fs/cifs/sess.c:87 cifs_ses_get_chan
Just saw this bug with Ubuntu Jammy, kernel 6.2.0-32-generic in a host
with multiple CIFS automounts. All mounts have Kerberos authentication
and cifs multiuser option on. The server has multiple user accounts
accesssing the shares (it is a ssh server). The automounts are to
Windows servers and a N
The enctypes according to klist are: Etype (skey, tkt): aes256-cts-hmac-
sha1-96, aes256-cts-hmac-sha1-96. The kerberos tickets come from Active
Directory server and NFS servers are NetApps, if that matters.
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This also affects Ubuntu Bionic, if linux-generic-hwe-18.04 is
installed. The 4.15.0-112-generic works fine.
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https://bugs.launchpad.net/bugs/1886277
Title:
Regression on N
*** This bug is a duplicate of bug 1813663 ***
https://bugs.launchpad.net/bugs/1813663
** This bug has been marked a duplicate of bug 1813663
External monitors does not work anymore 4.15.0-44
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The problem went away with linux-image-generic-hwe-18.04 4.18.0.14.64. I
think I'll just switch to that kernel for machines maintained by me.
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The same thing happens on dock disconnect with Lenovo Thinkpad T480.
Here is the log.
Jan 30 17:42:46 cubbli18-gold kernel: [ 169.224084] BUG: unable to handle
kernel NULL pointer dereference at 0245
Jan 30 17:42:46 cubbli18-gold kernel: [ 169.224110] IP:
intel_ddi_post_disable+0x5
I can confirm this with Lenovo X280, except that it happens on a USB-C
connected monitor which has a builtin USB-hub (the monitor is the
docking station). It makes the docking station unusable. In older
kernels this setup used to work. I have multiple crashes like this.
Jan 29 18:01:00 lx8-cubbli
Just confirming this: This keeps happening with Thinkpad X280.
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Title:
Two-finger scrolling no longer works after resuming from susp
apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195384/+files/ProcEnviron.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195385/+files/ProcInterrupts.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195387/+files/UdevDb.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195386/+files/ProcModules.txt
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apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195388/+files/UdevLog.txt
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I added the required information from another (identical) host with the
same problem. Please ignore it, since the actual hardware used is not
really relevant. We can reproduce this in other hardware too. This
happens in classroom installations in University of Helsinki and has
been going on for at
apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195389/+files/WifiSyslog.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195383/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195382/+files/Lsusb.txt
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apport information
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195380/+files/BootDmesg.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1365485/+attachment/4195381/+files/Lspci.txt
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apport information
** Tags added: apport-collected
** Description changed:
Currently latest Ubuntu Linux kernel image has a a bug, probably a race
condition, which happens when there are multiple kerberos nfs4 mounts in
/etc/fstab. This does not happen on every boot, so to reproduce this y
Public bug reported:
Currently latest Ubuntu Linux kernel image has a a bug, probably a race
condition, which happens when there are multiple kerberos nfs4 mounts in
/etc/fstab. This does not happen on every boot, so to reproduce this you
probably need a few retries. This happens using the current
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