http://bugzilla.opensuse.org/show_bug.cgi?id=1202581 Bug ID: 1202581 Summary: kernel 5.14.21-150400.24.18-default emits "soft lockup" errors; sometimes won't even boot Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.4 Hardware: x86-64 OS: Other Status: NEW Severity: Critical Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: psychonaut@nothingisreal.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 860955 --> http://bugzilla.opensuse.org/attachment.cgi?id=860955&action=edit Output of hwinfo Upon upgrading from Leap 15.3 to Leap 15.4, which uses 5.14.21-150400.24.18-default, I'm now getting a bunch of kernel log messages of the following form: watchdog: BUG: soft lockup - CPU#1 stuck for 212s! [swapper/1:0] rcu: INFO: rcu_preempt self-detected stall on CPU The time value and the name of the process ("swapper" above) may vary. Sometimes these messages appear on the console while the machine is starting up, and the machine never completes the bootup sequence -- I just see a continuous stream of "soft lockup" errors, a new one appearing every 30 seconds or so. (The messages don't even appear in the system log, apparently because they occur before all the disks get mounted.) Sometimes bootup completes normally and the messages appear later on. Attached is the output of hwinfo, as well as a kernel log that shows one occurrence of the error message. -- You are receiving this mail because: You are on the CC list for the bug.