2009-03-05 09:51:46 Miss stack trace and back trace on kernel exception
der knut (GERMANY)
Message: 70450
Hello,
as I described at
I have to switch off MPU to can run our app.
Now I get no further debug information just "Restarting System" and system stops. As I read the code the kernel recognized that something bad happened, but do not call the stack/back trace print out.
How can switch on stack/back trace again?
At .config I activate
#
# Kernel hacking
#
....
CONFIG_DEBUG_HUNT_FOR_ZERO=y
CONFIG_ACCESS_CHECK=y
....
I tried to swittch of syslog and do "echo 9 > /proc/sys/kernel/printk" but no further output on console.
Thanks a lot
Knut
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2009-03-05 12:56:43 Re: Miss stack trace and back trace on kernel exception
Mike Frysinger (UNITED STATES)
Message: 70458
post the exact kernel output you're seeing ... i dont really understand what you're trying to describe
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2009-03-05 13:43:36 Re: Miss stack trace and back trace on kernel exception
der knut (GERMANY)
Message: 70462
Hello,
just as I wrote. "Restarting System" is the only poutput I can see.
I used to a lot of stack and back trace information as I wrote in the original post.
What must be enabled to see stack/back trace on exception if MPU is disabled?
Thanks a lot
Knut
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2009-03-05 15:24:32 Re: Miss stack trace and back trace on kernel exception
Mike Frysinger (UNITED STATES)
Message: 70469
then i really havent a clue what you're doing or what you're seeing
the message "Restarting System" only shows up when you run `reboot` ... and if you're rebooting, it makes no sense at all to see a crash message