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https://github.com/torvalds/linux
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Tip revision: b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce authored by Linus Torvalds on 17 May 2020, 23:48:37 UTC
Linux 5.7-rc6
Tip revision: b9bbe6e
kprobe_args.tc
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kprobe dynamic event with arguments

[ -f kprobe_events ] || exit_unsupported # this is configurable

echo 'p:testprobe _do_fork $stack $stack0 +0($stack)' > kprobe_events
grep testprobe kprobe_events | grep -q 'arg1=\$stack arg2=\$stack0 arg3=+0(\$stack)'
test -d events/kprobes/testprobe

echo 1 > events/kprobes/testprobe/enable
( echo "forked")
grep testprobe trace | grep '_do_fork' | \
  grep -q 'arg1=0x[[:xdigit:]]* arg2=0x[[:xdigit:]]* arg3=0x[[:xdigit:]]*$'

echo 0 > events/kprobes/testprobe/enable
echo "-:testprobe" >> kprobe_events
clear_trace
test -d events/kprobes/testprobe && exit_fail || exit_pass

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