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--- linux:general:troubleshooting [2018/09/05 10:40] – lunetikk
+++ linux:general:troubleshooting [2019/10/07 18:06] – lunetikk
@@ Line 163: / Line 163: @@
 The connection should work now.
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+==== Bug: soft lockup in messages ====
+=== Description ===
+You can find multiple "Bug: soft lockup" entries in /var/log/messages or journalctl
+<code>
+May 25 07:23:59 XXXXXXX kernel: [13445315.881356] BUG: soft lockup - CPU#16 stuck for 23s! [yyyyyyy:81602]
+</code>
+=== Reason ===
+>A 'soft lockup' is defined as a bug that causes the kernel to loop in kernel mode for more than 20 seconds without giving other tasks a chance to run. The watchdog daemon will send an non-maskable interrupt (NMI) to all CPUs in the system who, in turn, print the stack traces of their currently running tasks.
+-SUSE KB [[https://www.suse.com/support/kb/doc/?id=7017652|7017652]]
+=== Fix ===
+__Solution 1:__
+Restart your system and/ or decrease your CPU load.
+__Solution 2:__
+Increase the time (default 10) before soft lockups are fired.
+<code bash >echo 20 > /proc/sys/kernel/watchdog_thresh</code>
+or
+<code bash>
+echo "kernel.watchdog_thresh=20" > /etc/sysctl.d/99-watchdog_thresh.conf
+sysctl -p  /etc/sysctl.d/99-watchdog_thresh.conf
+</code>
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