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b=fYzzO+i1D4rJ5ahth0Fj5Y9OAdQC7t6i1G9GlLiXKvDBP8sgzr260g9+E01BC48YGqYfJuTnGRJ47oxUTZEbFACxthfqoIZGwAi5uE39fpTAu2rpoyPG/jfm11kHorOxdz8bi3I7f6T9o2/VmGCRmcxpHPf+rxoX+ofic5jsytk= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=garyguo.net; Received: from LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:488::16) by LO0P265MB5144.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:285::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9520.13; Tue, 20 Jan 2026 23:54:08 +0000 Received: from LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM ([fe80::1c3:ceba:21b4:9986]) by LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM ([fe80::1c3:ceba:21b4:9986%5]) with mapi id 15.20.9542.008; Tue, 20 Jan 2026 23:54:08 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 20 Jan 2026 23:54:07 +0000 Message-Id: To: "Ihor Solodrai" , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , "Gary Guo" Cc: "Alexei Starovoitov" , "Daniel Borkmann" , "Andrii Nakryiko" , "Martin KaFai Lau" , "Eduard Zingerman" , "Song Liu" , "Yonghong Song" , "John Fastabend" , "KP Singh" , "Stanislav Fomichev" , "Hao Luo" , "Jiri Olsa" , , Subject: Re: [PATCH] scripts/gen-btf.sh: fix shebang for NixOS From: "Gary Guo" X-Mailer: aerc 0.21.0 References: <20260120182034.3647092-1-gary@kernel.org> <5364d5ec-f30c-40d6-9a99-c251fec3868c@linux.dev> In-Reply-To: <5364d5ec-f30c-40d6-9a99-c251fec3868c@linux.dev> X-ClientProxiedBy: LO4P265CA0177.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:312::20) To LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:488::16) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LOVP265MB8871:EE_|LO0P265MB5144:EE_ X-MS-Office365-Filtering-Correlation-Id: 7e54e5db-7d3d-4af5-527d-08de587f3364 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|10070799003|1800799024; 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Other program that kernel bu= ild >>>>> depends on is supplied via PATH, so shebang needs to use /usr/bin/env= to >>>>> find them. >>>>> >>>>> This has been done to a few other scripts already, e.g. >>>>> gen_test_kallsyms.sh or decode_stacktrace.sh. >>>>> >>>>> Fixes: 522397d05e7d ("resolve_btfids: Change in-place update with raw= binary output") >>>>> Signed-off-by: Gary Guo >>>>> --- >>>>> scripts/gen-btf.sh | 2 +- >>>>> 1 file changed, 1 insertion(+), 1 deletion(-) >>>>> >>>>> diff --git a/scripts/gen-btf.sh b/scripts/gen-btf.sh >>>>> index be21ccee3487..4cd3159f2ddb 100755 >>>>> --- a/scripts/gen-btf.sh >>>>> +++ b/scripts/gen-btf.sh >>>>> @@ -1,4 +1,4 @@ >>>>> -#!/bin/bash >>>>> +#!/usr/bin/env bash >>>>> # SPDX-License-Identifier: GPL-2.0 >>>>> # Copyright (c) 2025 Meta Platforms, Inc. and affiliates. >>>>> # >>>>> >>>>> base-commit: 053966c344dbd346e71305f530e91ea77916189f >>>> >>>> Hi Gary, thanks for the patch. >>>> >>>> I'm guessing this came up because gen-btf.sh is part of the vmlinux >>>> build, and link-vmlinux.sh has #!/bin/sh (not bash). >>> >>> My typical experience is that when I see an error about /bin/bash not f= ound, I >>> just use "bash