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48186febf1
As asked by Daniel Vetter, this is a tech which checks if we can cause division by zero in kernel by reading the i915_emon_status debugfs entry repeatably. Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
35 lines
632 B
Bash
Executable File
35 lines
632 B
Bash
Executable File
#!/bin/sh
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#
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# This check if we can crash the kernel with segmentation-fault
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# by reading /sys/kernel/debug/dri/0/i915_emon_status too quickly
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#
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if [ -d /debug/dri ] ; then
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debugfs_path=/debug_dri
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fi
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if [ -d /sys/kernel/debug/dri ] ; then
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debugfs_path=/sys/kernel/debug/dri
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fi
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i915_path=x
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for dir in `ls $debugfs_path` ; do
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if [ -f $debugfs_path/$dir/i915_error_state ] ; then
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i915_path=$debugfs_path/$dir
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break
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fi
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done
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if [ $i915_path = "x" ] ; then
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echo i915 debugfs path not found.
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exit 1
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fi
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for z in $(seq 1 1000); do
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cat $i915_path/i915_emon_status > /dev/null
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done
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# If we got here, we haven't crashed
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exit 0
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