From nobody Fri Dec 19 20:53:03 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DA21235072; Thu, 5 Jun 2025 13:27:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749130023; cv=none; b=GTVAaL8pOTl6gsciBaaBNj5tOHrV29QivF7fEk/f58tGFyEcMzr59d5bnaOOu+Cy2RN1enAVP6KVENaOELBQvvpPc8k3Aq4k1RjO9Lm61YTQCD5xNjROsNI63QuGf4be57yEOjF6kwC3EmXy/zl7HOVCYbh6ixplTZFoVBU9KEg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749130023; c=relaxed/simple; bh=homajw06345S0l4YIs2RkqSbi/C7IEpQUvMFjl5CQ2s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jAxtb68yFdDIOk9JBjapBTD1ZBYqtL5s5haINCXisT+lzRIBx+IX2E+BSwa1PIoqGLeYC94FlmnSdZMpSZ90cemDZe7dAR9Pq09miW2e+Vb6ISROBNyf1UKsPrYvX0lIX+Xdsj5v1ouXEDuJ7tOH8ntLgujxcwwB/EiMvf+ZUnM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ssZ/+q4o; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ssZ/+q4o" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0CE0FC4CEE7; Thu, 5 Jun 2025 13:26:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749130023; bh=homajw06345S0l4YIs2RkqSbi/C7IEpQUvMFjl5CQ2s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ssZ/+q4oS1F9zHoKYoabsKnU1EICmVGkYwct1HnU+lODvQ6zxxZYlPfBDniXvbKDR WgQXenxIisMoNj76F2CtpkF4Uz+z2uYXrMDFEUq8YQN9ICVKYqjL5lgZzgogK31/LN cJlCMpSlvIqZPXP0+wXMZQNfQezVaaH/vG1J1UPtlIFu9/XU/MCalAuxvp6tg/8+lh pIAHhLm/KRoFvpaTwjwsenumSbArPxaqYNOT5oV19kOakHSBrAm+VlRJ5Cc90+tkz4 VKpvdRkwqYCTBqS9MVR3edOMRK+La34XYq6fACs/NYBKq9smSbxt/GzTqBZlK22pUA cOb/wS4Hil/Ig== From: Jiri Olsa To: Oleg Nesterov , Peter Zijlstra , Andrii Nakryiko Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Song Liu , Yonghong Song , John Fastabend , Hao Luo , Steven Rostedt , Masami Hiramatsu , Alan Maguire , David Laight , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Ingo Molnar Subject: [PATCHv3 perf/core 16/22] selftests/bpf: Add uprobe syscall sigill signal test Date: Thu, 5 Jun 2025 15:23:43 +0200 Message-ID: <20250605132350.1488129-17-jolsa@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250605132350.1488129-1-jolsa@kernel.org> References: <20250605132350.1488129-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Make sure that calling uprobe syscall from outside uprobe trampoline results in sigill signal. Signed-off-by: Jiri Olsa --- .../selftests/bpf/prog_tests/uprobe_syscall.c | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c b/tool= s/testing/selftests/bpf/prog_tests/uprobe_syscall.c index 792ff7d411d2..94be99dcd1f3 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c @@ -740,6 +740,40 @@ static void test_uprobe_race(void) ASSERT_FALSE(USDT_SEMA_IS_ACTIVE(race), "race_semaphore"); } =20 +#ifndef __NR_uprobe +#define __NR_uprobe 336 +#endif + +static void test_uprobe_sigill(void) +{ + int status, err, pid; + + pid =3D fork(); + if (!ASSERT_GE(pid, 0, "fork")) + return; + /* child */ + if (pid =3D=3D 0) { + asm volatile ( + "pushq %rax\n" + "pushq %rcx\n" + "pushq %r11\n" + "movq $" __stringify(__NR_uprobe) ", %rax\n" + "syscall\n" + "popq %r11\n" + "popq %rcx\n" + "retq\n" + ); + exit(0); + } + + err =3D waitpid(pid, &status, 0); + ASSERT_EQ(err, pid, "waitpid"); + + /* verify the child got killed with SIGILL */ + ASSERT_EQ(WIFSIGNALED(status), 1, "WIFSIGNALED"); + ASSERT_EQ(WTERMSIG(status), SIGILL, "WTERMSIG"); +} + static void __test_uprobe_syscall(void) { if (test__start_subtest("uretprobe_regs_equal")) @@ -760,6 +794,8 @@ static void __test_uprobe_syscall(void) test_uprobe_usdt(); if (test__start_subtest("uprobe_race")) test_uprobe_race(); + if (test__start_subtest("uprobe_sigill")) + test_uprobe_sigill(); } #else static void __test_uprobe_syscall(void) --=20 2.49.0