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Fri, 5 Jan 2024 12:02:08 +0000 From: David Laight To: "'alexs@kernel.org'" , Eric Biederman , Kees Cook , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" CC: Alex Shi , "curlinhuang@tencent.com" Subject: RE: [PATCH] execve: argument list space enlargement Thread-Topic: [PATCH] execve: argument list space enlargement Thread-Index: AQHaPkWNtOnoU7TWREOKrIllLweKE7DLHuZw Date: Fri, 5 Jan 2024 12:02:08 +0000 Message-ID: <1834358b1a8642f9b46a209bad035474@AcuMS.aculab.com> References: <20240103130722.1551670-1-alexs@kernel.org> In-Reply-To: <20240103130722.1551670-1-alexs@kernel.org> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Stat-Signature: em1ijrugwuip3zktzx9obuicb38mcxex X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: D710A1C002E X-Rspam-User: X-HE-Tag: 1704456148-38318 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.142473, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: alexs@kernel.org > Sent: 03 January 2024 13:07 >=20 > From: Alex Shi >=20 > Wechat using too long gcc parameters, then get a strace complain: > execve(...) =3D -1 E2BIG (Argument list too long) > Have to increase the parameter space for this, stack has enough > space for this enlargement. They should fix their build so that it doesn't explode. It'll probably speed up the compiles as well since the very long argv[] almost certainly comes from a lot of -I dir options and they slow down the compile. if they are -Dvar[=3Dval] then '-include file' can be used instead. =09David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1= PT, UK Registration No: 1397386 (Wales)