[kernel-bugs] [Bug 1177018] New: Rare kernel soft lockup causes PC to freeze
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018 Bug ID: 1177018 Summary: Rare kernel soft lockup causes PC to freeze Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: openSUSE Tumbleweed Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: pujos.michael@gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 841985 --> http://bugzilla.opensuse.org/attachment.cgi?id=841985&action=edit output of journalctl Using Kernel 5.4.10 and current TW as of the date of this report. Today I was working normally in Xorg and suddenly my laptop freezed: no keyboard input, mouse cursor moving but clicks inoperant, ssh'ing from another PC impossible. Interestingly, I had audio playing and it still continue to play normally. Fans of the laptop triggered full speed, indicating high CPU usage. I rebooted the laptop with ALT+SysRq+b and looked at the journal which contains a lot of "watchdog: BUG: soft lockup - CPU#1 stuck for 22s!" entries with stack trace that seems to refer to usb. I have attached the full journal log, look at the end for the "BUG: soft lockup" entries. At that point, the laptop had an uptime of about 3 days with a few suspend in-between. As far as USB is concerned, I have a Thunderbolt 3 dock connected and audio was playing through it (via USB audio) when it happened. Also had an Android device connected to the laptop directly. There's the Logitech unifying receiver connected to the laptop and a keyboard connected to the dock. I can include the output of hwinfo if necessary This freeze is rare in the grand scheme of things but it also happened once 2 weeks ago with a previous 5.4.x kernel. First I blamed it to the NVIDIA driver and did not investigate more, but now I'm not so sure given that the stack trace refer to USB. -- You are receiving this mail because: You are the assignee for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018#c1
--- Comment #1 from Michael Pujos
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018#c3
--- Comment #3 from Michael Pujos
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018
http://bugzilla.opensuse.org/show_bug.cgi?id=1177018#c4
Philippe Cond�
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