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Testing that the session ret_handler bypass works on single uprobe with multiple consumers, each with different session ignore return value. 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/20241108134544.480660-12-jolsa@kernel.org
45 lines
914 B
C
45 lines
914 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include <stdbool.h>
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#include "bpf_kfuncs.h"
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#include "bpf_misc.h"
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char _license[] SEC("license") = "GPL";
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__u64 uprobe_session_result[3] = {};
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int pid = 0;
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static int uprobe_multi_check(void *ctx, int idx)
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{
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if (bpf_get_current_pid_tgid() >> 32 != pid)
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return 1;
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uprobe_session_result[idx]++;
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/* only consumer 1 executes return probe */
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if (idx == 0 || idx == 2)
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return 1;
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return 0;
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}
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SEC("uprobe.session//proc/self/exe:uprobe_multi_func_1")
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int uprobe_0(struct pt_regs *ctx)
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{
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return uprobe_multi_check(ctx, 0);
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}
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SEC("uprobe.session//proc/self/exe:uprobe_multi_func_1")
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int uprobe_1(struct pt_regs *ctx)
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{
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return uprobe_multi_check(ctx, 1);
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}
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SEC("uprobe.session//proc/self/exe:uprobe_multi_func_1")
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int uprobe_2(struct pt_regs *ctx)
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{
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return uprobe_multi_check(ctx, 2);
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}
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