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BUG: soft lockup – CPU#0 stuck for 67s! [migration/0:5].
I got this error a couple of times on centos server just after restarting it . It just stuck at boot screen .
I dont know what is the exact cause for this but it booted normally when I did powercycle the server at first time .
I think this error is something related to device driver or something like device driver uses spinlocks improperly.
But the second time when it happend , i logged in to the server by booting from the grub menu with acpi=off switch at the end of kernel arguments
We can also increase the kernel.softlockup_thresh . for this ,
#sysctl -w kernel.softlockup_thresh=120
etc/sysctl.conf to make it active at next reboot.