From nobody Tue Dec 16 09:56:24 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 C9DE921B9FC; Mon, 21 Apr 2025 21:47:45 +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=1745272066; cv=none; b=tDzyumZsDF1802edCzvyGfZnrZ1bbb7EpTvodizXhuwSDppeSugsFUOOpgjAvkSrCBJBNotzR3ooxiSpeF7CPf4406NkDXkwZ10F+opqpP4CuI6YfJiaaCGVE59IvoC0iGKRVpVh1lD48oILlPuTQDHiWQ8ziNTYm4n2RE5Ykjk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745272066; c=relaxed/simple; bh=SREC6BOLxkMw16dJMZEBgmN7wOFw0w7YqTHRg+lx7B8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HuSpwZ+ABNVwBuoI+V6+KMxUmsopRQnWeNW2MDrVmYT0O9up46C4yb4mLhdsgO7UZW+cciIbBnAfYAPWMKbSETHkouCfdXl80dfDIvYo2Yfu5wVIdWXWpnh8pkEa+BLIwwjwU/OXiLjc27Df5lVwXvxSuB/R6fYXwmyHQ0JQPjE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RqFFJ7Zl; 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="RqFFJ7Zl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8E7D0C4CEE4; Mon, 21 Apr 2025 21:47:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745272065; bh=SREC6BOLxkMw16dJMZEBgmN7wOFw0w7YqTHRg+lx7B8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RqFFJ7ZlSWWVKpVAwBRwz3KNuAh4xFdJiRB9GO9GdvF5u8Bap50B7QhaobvTouMQM +6X/nz7OhNTxmsgVcchSItkIdl3J8JJzYiLzT22RSRAPuCtu67STa66d0sRHeO2/rU Nsspe1zW5vOq/OLmZRtc+dQ76bgh09HMswKzQrFF/YpVDYBg/Le7+BEVOM0IzrZ+Ty Kv012+dJp9pKizTOePoCsy3KCy/7gDnRhaqrem3l2/kA901sbH1EkI7abmNRli0vSD ihDawBFnxl8dSm8royf/2Mtb53jVHYzzbvWu6g1ZkCQrzEfoV8gj3onhlRxSRcDUPb Wh4ccspI4m2fg== 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: [PATCH perf/core 16/22] selftests/bpf: Add uprobe syscall sigill signal test Date: Mon, 21 Apr 2025 23:44:16 +0200 Message-ID: <20250421214423.393661-17-jolsa@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250421214423.393661-1-jolsa@kernel.org> References: <20250421214423.393661-1-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 57ef1207c3f5..f001986981ab 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c @@ -691,6 +691,40 @@ static void test_uprobe_race(void) pthread_join(threads[i], NULL); } =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")) @@ -711,6 +745,8 @@ 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