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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: ftrace - stacktrace filter command
# flags: instance
[ ! -f set_ftrace_filter ] && exit_unsupported
echo _do_fork:stacktrace >> set_ftrace_filter
grep -q "_do_fork:stacktrace:unlimited" set_ftrace_filter
(echo "forked"; sleep 1)
grep -q "<stack trace>" trace
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