From nobody Tue Oct 7 18:24:32 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 011212DC32B; Tue, 8 Jul 2025 13:26:52 +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=1751981213; cv=none; b=bpT6PXP/k6yGqW3lgf7h4asmeaw6Ua2CxKQsgSjHlY2CheUpzDA5iDaAEnWz8Q9/WuOqAV8mu0zC2xiq7ZXefDOQTp9VG8OhLbOrkZ+nt5S6XX+MeqYMCWj70ISlb7iAgJHa4CkwEjmpQ6RWzDwJHykTi/maNKC0LHUiRrZcoSA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751981213; c=relaxed/simple; bh=vJD2P+yQBieCXkhAy84uB8BCox7Bdj9MOS71Wbou8FU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PDz5UO4tQgjaZ8ut+hyLuomxRcaq4ExSl3vCjCfMPgJuGYUxdaaTeTpIZUL1y5tdg+q1LVB/cnTCPa1lA2aSlS6aKLHw85R2RFWjRwROBgDL1NYnGyg++G05QHveMUFIH9H/xE5nLEUxo254DMWCRrnzeulvuV8aESfsV4y4j0E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gijJAnau; 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="gijJAnau" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 548ABC4CEED; Tue, 8 Jul 2025 13:26:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751981212; bh=vJD2P+yQBieCXkhAy84uB8BCox7Bdj9MOS71Wbou8FU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gijJAnau+L+TBq8kSd26Sz+LHT0p+7Vv0bKOnWKzDprZQCfptS7uZnp7mfT0ztDPH WuU/Rf1wnCKUsplw6sJcR8DtpwIP6m/XSuBAyEYwTqYbqaQRl6PpsxoEsEXhsL7lGl ny+NPzgmM2AtxAW1o7jiQlK1idPQcabc7yJxeJtHZ0bSPKPa+2C/1Hzgk9v5eZqU1D 0emY0ytpRELZSZJkKGQJBmwtxcl9Lx5MPDLj8VaqarK22y5zu5QYvd/zy/vwlrxvg0 T8vr2iTNO/KSaV3TcBrHHoEm+vTNVjS8zu4ifGbPMzEproCMtMFVn3KjlFDAz5eLVn 20MegD0LLuu9A== 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: [PATCHv4 perf/core 16/22] selftests/bpf: Add uprobe syscall sigill signal test Date: Tue, 8 Jul 2025 15:23:25 +0200 Message-ID: <20250708132333.2739553-17-jolsa@kernel.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708132333.2739553-1-jolsa@kernel.org> References: <20250708132333.2739553-1-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 043570fdbd75..bd59b4b5bd3c 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c @@ -735,6 +735,40 @@ 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")) @@ -755,6 +789,8 @@ 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 2.50.0