On Thu, 30 May 2013 11:31:49 -0600, neha naik said: > I have loaded the linux crashdump on ubuntu machine. I can manually > generate the crashdump by the 'echo c > /proc/sysrq-trigger'. > However, i am having a panic in a module i have written, which is not > generating a core dump. I simply see the stack in the console and it kind of > hangs there. I have to manually power it off and power it on ... > Can someone explain why this happens? Is it because the kernel has gone > into such a state that it cannot even follow the procedure for > crash dump.
Most likely, your module isn't in fact panic'ing, but oops'ing. There's a number of kernel variables that control whether to panic. ls -l /proc/sys/kernel/*panic* and for example 'echo 1 > /proc/sys/kernel/panic_on_oops' will cause a panic if something oops'es.
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