https://bugzilla.suse.com/show_bug.cgi?id=1219147 Bug ID: 1219147 Summary: Kernel: NULL pointer dereference during boot, 5.14.21-150500.55.44, usb_unbind_interface Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.5 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: frank.kuehndel@embedded-brains.de QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- Created attachment 872149 --> https://bugzilla.suse.com/attachment.cgi?id=872149&action=edit Screen photos showing kernel oops and systemd output. Since the update to kernel 5.14.21-150500.55.44-default, I experience a spontaneous kernel bug during boot (for the first time on Monday 2024-Jan-22). This did not happen with kernel 5.14.21-150500.55.39-default or the kernels before. This bug appears in about 50% of all starts. This is the sequence of actions: * I power-on my Laptop (Lenovo 20QN-005YGE "P53", NVIDIA GPU) with USB-C docking station connected. * I get the Grub2 menu and let it start the default entry. * I get the usual green text screen to enter the password to decrypt the disk and enter the phrase (see img_1.jpg). * A moment later I see the green kernel oops message (attached as screen photo img_2.jpg). * When I press a key, I can see that systemd got to the point where it wanted to decrypt the disk but then hangs in a filesystem check (see img_4.jpg). * I power my Laptop off (waiting for 15 minutes has no effect). I "believe" the system fails to mount "/" and "/home". Consequently, I cannot find any entry of this oops or the boot at all in /var/log/messages, the journal or with "last". Workaround: * In the Grub2 menu, I choose the "Advanced" entry and boot kernel 5.14.21-150500.55.39-default. * In /etc/zypp/zypp.conf I changed one line multiversion.kernels = latest,latest-1,running to multiversion.kernels = latest,latest-1,running,5.14.21-150500.55.39 in order to prevent the "good" Kernel from beeing deleted. -- You are receiving this mail because: You are on the CC list for the bug.