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Bug 152607 - `cat /dev/port` crashes system
Summary: `cat /dev/port` crashes system
Status: RESOLVED UPSTREAM
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Other
: High normal (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
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Reported: 2006-10-23 16:22 UTC by Kaiting Chen
Modified: 2006-10-23 16:53 UTC (History)
1 user (show)

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Runtime testing required: ---

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Description Kaiting Chen 2006-10-23 16:22:09 UTC 
Maybe you're just not supposed to do this, but I've never seen a dead crash like this on a Linux system. Try this. `su` to root and type `cat /dev/port`. At least it crashed my system.
Comment 1 Daniel Drake (RETIRED) gentoo-dev 2006-10-23 16:53:06 UTC 
Not here, but is kinda stupid anyway. If you want port access you can use ioperm() and inb/outb, and even then you can screw your system with ease. If you believe this is a real bug and can reproduce it on the latest development kernel then you should report it to the Linux kernel mailing list.