From nobody Fri Oct 3 16:47:15 2025 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.4]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5D9B76FC5; Thu, 28 Aug 2025 02:02:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756346556; cv=none; b=RBHq70fDp2KRSTm8sTj+Q4lF7m+SnQKvoJsoOkkFDce7Wrh1iyDdTIZBXnTWTsHtjcv+nOJ3TUasNsmZWBz+taABm2RC1wRnNkdPPfIQri+eQLUBMfvt3piV7aXu+adB60HUPLkphXA+U4T1gbwX2m8HEkFaJTo50mwoZtxffHI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756346556; c=relaxed/simple; bh=vsfhv3Gr7aPA9DerCN7CntWRlP3vsCWyOX62qut/PpE=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=UREdQ/gvpJwGx/KwD3tG1tEHMdXvzap9n7oZN2jMDSuQX7iibffT8TaIKVZyF+ZUpP6LOt0h0WuxWdWVrYjDHZ/z5Z8j4jo28cGd5k+z07QTlyzxT1DCtV+ZTdEX0FRvz7stDilC4k7DzbYBs0LFGkHp9UyUgmC36oozRbZaXoA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=kQG/Le85; arc=none smtp.client-ip=220.197.31.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="kQG/Le85" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=OC PqRs8ymz/48v/kbOviYYdt13c7ovX3tb/1u5IzY5o=; b=kQG/Le850NIFk5U8k/ rjYOVs3cyLtvg2+HveeRz1XgvBb70po5NLdGAJ0lIg5fPMI9Zulmaj3ay/ZURPeV X6etzSBaj6+I6ZXjqJr9WOlp6eQ8Gksll+rP/x56NOtHgKq/EiosmHE11saEjWjO VUwzjtJY+dDrBDk3i/cHVvRbQ= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g0-4 (Coremail) with SMTP id _____wA3NVB_uK9o16VVEQ--.1167S2; Thu, 28 Aug 2025 10:01:37 +0800 (CST) From: Feng Yang To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH v2 bpf-next] selftests/bpf: Fix the invalid operand for instruction issue Date: Thu, 28 Aug 2025 10:01:35 +0800 Message-Id: <20250828020135.248869-1-yangfeng59949@163.com> X-Mailer: git-send-email 2.25.1 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 X-CM-TRANSID: _____wA3NVB_uK9o16VVEQ--.1167S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7Ww48WrWxZFyxWry7Cr4rXwb_yoW8XF15p3 W8W3s0qF1Sgr15XF47Jr47WF4rGFs3Xr48Cw40ywsrAF15Cr97JryxKrWYgr9xWa93ur4f ZFn7tr4a9F4DAaDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UMc_hUUUUU= X-CM-SenderInfo: p1dqww5hqjkmqzuzqiywtou0bp/1tbiYxi3eGivsoPJhQAAsO Content-Type: text/plain; charset="utf-8" From: Feng Yang The following issue occurs when compiling with clang version 17.0.6: progs/compute_live_registers.c:251:3: error: invalid operand for instruction 251 | "r0 =3D 1;" | ^ :1:22: note: instantiated into assembly here 1 | r0 =3D 1;r2 =3D 2;if r1 & 0x7 goto +1;exit;r0 =3D r2;exit; | ^ 1 error generated. Use __imm_insn to fix this issue. Fixes: 4a4b84ba9e453 ("selftests/bpf: verify jset handling in CFG computati= on") Signed-off-by: Feng Yang --- Changes in v2: - Use __imm_insn, thanks: Eduard Zingerman. - Link to v1: https://lore.kernel.org/all/20250827031540.461017-1-yangfeng5= 9949@163.com/ --- tools/testing/selftests/bpf/progs/compute_live_registers.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/progs/compute_live_registers.c b/t= ools/testing/selftests/bpf/progs/compute_live_registers.c index 6884ab99a421..01d73ad76faf 100644 --- a/tools/testing/selftests/bpf/progs/compute_live_registers.c +++ b/tools/testing/selftests/bpf/progs/compute_live_registers.c @@ -249,11 +249,13 @@ __naked void if3_jset_bug(void) asm volatile ( "r0 =3D 1;" "r2 =3D 2;" - "if r1 & 0x7 goto +1;" + ".8byte %[jset];" /* same as 'if r1 & 0x7 goto +1;' */ "exit;" "r0 =3D r2;" "exit;" - ::: __clobber_all); + : + : __imm_insn(jset, BPF_JMP_IMM(BPF_JSET, BPF_REG_1, 0x7, 1)) + : __clobber_all); } =20 SEC("socket") --=20 2.43.0