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504d21d905
Making sure kprobe.session program can return only [0,1] values. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20241108134544.480660-11-jolsa@kernel.org
31 lines
582 B
C
31 lines
582 B
C
// SPDX-License-Identifier: GPL-2.0
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include <bpf/usdt.bpf.h>
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#include "bpf_misc.h"
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char _license[] SEC("license") = "GPL";
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SEC("kprobe.session")
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__success
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int kprobe_session_return_0(struct pt_regs *ctx)
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{
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return 0;
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}
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SEC("kprobe.session")
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__success
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int kprobe_session_return_1(struct pt_regs *ctx)
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{
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return 1;
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}
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SEC("kprobe.session")
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__failure
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__msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
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int kprobe_session_return_2(struct pt_regs *ctx)
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{
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return 2;
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}
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