LINUX: HOW TO MANUALLY FORCE CRASH / KERNEL PANIC LINUX HOST

Following is commands can be used to force crash / kernel panic on Linux hosts

echo 1 > /proc/sys/kernel/sysrq 
echo 'c' > /proc/sysrq-trigger 

Following is sample output of above command.

echo 1 > /proc/sys/kernel/sysrq 
echo 'c' > /proc/sysrq-trigger 
 
 
Below is snippet of crash messages we see when we run above commands. 
Last login: Fri Aug 28 13:22:15 on ttyS0 
[root@test-host ~]# echo 1 > /proc/sys/kernel/sysrq 
[root@test-host ~]# echo 'c' > /proc/sysrq-trigger 
SysRq : Trigger a crash 
BUG: unable to handle kernel NULL pointer dereference at           (null) 
IP: [<ffffffff813183e6>] sysrq_handle_crash+0x16/0x20 
PGD 79bea067 PUD 7a4ca067 PMD 0  
Oops: 0002 [#1] SMP  
CPU 1  
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Search Keywords: linux unix force forcible panic kernel crash reboot manual manually command commands how host hang hanging

Article Author: Tarun Boyella