Can someone suggest how the kernel hangs while entering kdb mode using the command
echo g > /proc/sysrq-trigger
.How kgdb and kdb differs?
Is there any process running when the kernel enters debugger mode?.
Can someone suggest how the kernel hangs while entering kdb mode using the command
echo g > /proc/sysrq-trigger
.How kgdb and kdb differs?
Is there any process running when the kernel enters debugger mode?.
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Your question has the answer :-), it "halts kernel" hence kernel is frozen until you allow it run from gdb on the host.
refer following doc for further info.
https://www.kernel.org/doc/htmldocs/kgdb.html