From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 22269 invoked from network); 29 Oct 2020 16:14:05 -0000 Received: from mother.openwall.net (195.42.179.200) by inbox.vuxu.org with ESMTPUTF8; 29 Oct 2020 16:14:05 -0000 Received: (qmail 17921 invoked by uid 550); 29 Oct 2020 16:14:01 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 17903 invoked from network); 29 Oct 2020 16:14:00 -0000 Date: Thu, 29 Oct 2020 17:13:48 +0100 From: Szabolcs Nagy To: Milan =?utf-8?Q?P=2E_Stani=C4=87?= Cc: musl@lists.openwall.com Message-ID: <20201029161348.GA2947641@port70.net> Mail-Followup-To: Milan =?utf-8?Q?P=2E_Stani=C4=87?= , musl@lists.openwall.com References: <20201026005028.GI534@brightrain.aerifal.cx> <20201026005912.GJ534@brightrain.aerifal.cx> <20201027211735.GV534@brightrain.aerifal.cx> <20201028185608.GG534@brightrain.aerifal.cx> <20201028230610.GA3269@arya.arvanta.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20201028230610.GA3269@arya.arvanta.net> Subject: Re: [musl] [PATCH v2] MT fork * Milan P. Stani=C4=87 [2020-10-29 00:06:10 +0100]: > On Wed, 2020-10-28 at 14:56, Rich Felker wrote: > > On Tue, Oct 27, 2020 at 05:17:35PM -0400, Rich Felker wrote: > > > > >=20 > > > > > Will follow up with draft patch for testing. > > > >=20 > > > > Patch attached. It should suffice for testing and review of whether > > > > there are any locks/state I overlooked. It could possibly be made l= ess > > > > ugly too. > > > > [...] > > >=20 > > > Another bug: > > > [...] > >=20 > > And an updated version of the patch with both previously reported bugs > > fixed, for the purpose of users/distros wanting to test without > > manually fixing up the patch. Attached. > =20 > Applied this patch on top of current musl master, build it on Alpine and > installed. >=20 > Tested by building ruby lang. Works fine. > Also tested building zig lang, works fine. > But crystal lang builds fine, but running it hangs. strace shows: > ------------- > [pid 5573] futex(0x7efc50fba9e4, FUTEX_WAIT_PRIVATE, 2, NULL > [pid 5568] futex(0x7efc5118f984, FUTEX_REQUEUE_PRIVATE, 0, 1, 0x7efc514b= 67a4) =3D 1 > [pid 5568] futex(0x7efc514b67a4, FUTEX_WAKE_PRIVATE, 1) =3D 1 > [pid 5571] <... futex resumed>) =3D 0 > [pid 5568] futex(0x7efc511099e4, FUTEX_WAIT_PRIVATE, 2, NULL > [pid 5571] futex(0x7efc510409e4, FUTEX_WAIT_PRIVATE, 2, NULL > ------------- > where it hangs. try to attach gdb to the process that hang and do thread apply all bt (make sure musl-dbg is installed)