會令 kernel Panic 的情況如下

• panic
• hung_task_panic
• softlockup_panic
• panic_on_oops
• panic_on_io_nmi
• panic_on_unrecovered_nmi
• unknown_nmi_panic

應用:

kernel.panic = 10

kernel.panic_on_oops = 1 

# 當 kernel 遇到 panic 時, 就會延遲 10 秒後才 reboot
# oops 都當作 panic 處理

sysctl -p

echo 10 > /proc/sys/kernel/panic

softlockup_panic:

Soft Lockups Can Normally Happen on Systems with Heavy Disk I/O

Soft lockups can some times be false positives.

They are warnings the CPU is busy on an operation for what might be too long.

sysctl -w kernel.softlockup_thresh=60 (/proc/sys/kernel/softlockup_thresh ) <-- Debian6

Enable:

kernel.softlockup_panic = 1

其他工具:

kernel dump or netdump