Michael Albinus <michael.albinus@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 49954) by debbugs.gnu.org; 18 Sep 2021 20:50:24 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Sep 18 16:50:24 2021 Received: from localhost ([127.0.0.1]:37040 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mRhI0-0003Fv-AU for submit <at> debbugs.gnu.org; Sat, 18 Sep 2021 16:50:24 -0400 Received: from mout.gmx.net ([212.227.15.18]:43853) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mRhHw-0003Fe-Cn for 49954 <at> debbugs.gnu.org; Sat, 18 Sep 2021 16:50:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1631998211; bh=8hdRc37UZyg/5+9z1DDvl4nUMdPZRZYMn3Inqix/sxM=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=JxnhqPVKTv2TghqEJWOOuLRRX0USq2CEzegP6u7o6s2+rdMiH0b/QUhlOLtaKdw3K 0tINsRpF4o1dj7Vpy4L0BcoZzlSUcuB9LOerN5vvS7LeBEMrgkXP9z3kVBmaNpXXWP qeVT3Zkpvw/BSbQN5Vr0tLJDcVUicQREDwW6sd7g= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([79.140.124.143]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1M89Gj-1mVo1Y1ctn-005Iyq; Sat, 18 Sep 2021 22:50:11 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> <87o88uisee.fsf@HIDDEN> <87v930msrk.fsf@HIDDEN> <87mtoch23c.fsf@HIDDEN> <878rzwmnhv.fsf@HIDDEN> <8735q1eiye.fsf@HIDDEN> Date: Sat, 18 Sep 2021 22:50:10 +0200 In-Reply-To: <8735q1eiye.fsf@HIDDEN> (Dima Kogan's message of "Sat, 18 Sep 2021 13:18:17 -0700") Message-ID: <87v92xfw1p.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:JwjoHUQk5BH5q62TizGWCYwGGreWCMwIQ13gMrePVmkwiH19kis jqNm+JJfWAMx8RvSa5wRcewSDc0RxQrjRExgShwcqMeGYakucD4Ioo1+MYDRj86gDuWv+w0 CM3naMYIC951gmoPlk4uDiNDhRTsRPE+KRnCaMPrCSzfKMQheLkjeKMlB5fSK3CS4W5/v5d xvrMQKeAve2NkhUYRBV+A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:4PRW36hzOB4=:/SkyoJqEa7OunnQWLs8hAJ ZsxODVO/XwN3571z3TlmWWsfJaVTxC5YdQg/K77/zn6MxapIaLVMJzrNzVG/+1CQrrKbAsfGS 3SXefKgI5u1oLvG5x1tWfq0umiTzlIGw1wmJYYf0jQDoF7WmvrWvTjno7DcYgtTAPzHtxHnxI yQUsN0SI+fgHHUYjilQTJi86cYwmXYygNSOi50LEYvFCsO9nlRC0GJHlB6qmfqoxLeg1YH+NQ KXXs0103VtH3akXhWMo8KAhTgcZ8vMeZ2yklYM+zcPIcYFLwvAXJ6VUouIics1cPaGbPuGZET 7W8UruMSGbojBtU85eQpEX0QpsjhJUq41xDku2QkkPPb37YXZVQERj0ohD7hPMh7j9rYKuoIO 7E0leg6hf/IH20vSk6D45zZJNvMpy3/AFSjGxQsgLS+AlJ0c1xYOV501N+KNGC97ZP5agT134 yjnnRlnTSHc6VFrPaCxX0Zq9di5VpWc3kFxBrQ+lI/vtz5BqBneP6cLtf8gn4P1v1WzMAIWno 8FyV25MglFj1gqNoLexASrha8L8PuJYpdvyScrjYaALiMGoeTiGfewO8d2RjkmTkR/NIhykG7 Xtx8+ZySYFV5gjwC2kxo3+7ihsQQXbmeSQOgH63Lmo3MjHp7O5RZmUnp04ibDUV2x522wQ4DY GaSPBxOn7nKbH6cRlxppIjyLfWQcmHORPgdgaLDZ9XBh4ejOaUNoJvy/fCvDOTRwHTHlBv6mC Q9QA4DG75EoSuLjdoMsju765FcnGbW63WqRBsG05iCYuz6P0QRzbdmUXgzlYQ40DROlu2zSfx GkVQF+dkTUPI4Tg1CGfasGADQ6Vmmuwhj/4QktYUq6M3kKKqQRl8iEUs1Q2qbpj9QniLK6KIz p26wHo559keypIkVQy9TqrN/m4m83ykrEStEe2ZR5WxbM+1o+42fL5bvBRM+7FUYdczzDYWNI kuJmvc9EGDoYa22AkgrMBDTCildC2LwwAPxh1WC8Z351bYGt/x6AlJNF965TRP8LeG5VZx5AE 7jWaifsEULzPAC5vLPDiMIrXRkk14cOhpwsJl2Lcclckr8XZY10Xbk+z9uiUcYgbBiMNwS8hw fDMrwN13prhirI= X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Dima Kogan <dima@HIDDEN> writes: > Hi. Hi Dima, > I just hit this error again, and tried to work around it with > > (setq debug-ignored-errors > (cons 'remote-file-error debug-ignored-errors)) > > as you suggested. It doesn't work to kill the process, though. I C-c C-c > in my M-x shell, and it fails with a different error: > > tramp-accept-process-output: No catch for tag: non-essential, non-essential > > Doing my caching dance actually makes C-c C-c do the right thing. Does > this make sense? If the "caching dance" helps you you might continue with this. But I won't recommend it to the public, I fear too many undesired side-effects. The best solution would be to fix the problem itself. As always. Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
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User-agent: mu4e 1.4.15; emacs 28.0.50
From: Dima Kogan <dima@HIDDEN>
To: Michael Albinus <michael.albinus@HIDDEN>
Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes:
"Forbidden reentrant call of Tramp"
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Date: Sat, 18 Sep 2021 13:18:17 -0700
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Hi. I just hit this error again, and tried to work around it with
(setq debug-ignored-errors
(cons 'remote-file-error debug-ignored-errors))
as you suggested. It doesn't work to kill the process, though. I C-c C-c
in my M-x shell, and it fails with a different error:
tramp-accept-process-output: No catch for tag: non-essential, non-essential
Doing my caching dance actually makes C-c C-c do the right thing. Does
this make sense?
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 16 Sep 2021 17:36:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Sep 16 13:36:26 2021 Received: from localhost ([127.0.0.1]:56490 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mQvJC-000133-3q for submit <at> debbugs.gnu.org; Thu, 16 Sep 2021 13:36:26 -0400 Received: from mout.gmx.net ([212.227.17.20]:32783) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mQvJ8-00012k-HR for 49954 <at> debbugs.gnu.org; Thu, 16 Sep 2021 13:36:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1631813773; bh=V2B2jRYxCLHjdDjwtot+ral6euR2OYWg1phQByYO8ow=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=GbTr6Vda8e1P5TmYcS2bnipFDBxdzrqxhPAKMCCdsj/sDaiwZTw/LWvMOHnTbWASC GUow0ZLieeGCkwvQxVQ2XeGzPtb6GIgAhbwStLbo8T2RZuSA4bk5Ywm6GHpP95N4H8 +QlpnCihe1JINLqQxdbXEBqpLkkH6MghVOBjMTh4= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([213.220.158.132]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MgvrB-1n7RGC156T-00hRAl; Thu, 16 Sep 2021 19:36:13 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> <87o88uisee.fsf@HIDDEN> <87v930msrk.fsf@HIDDEN> <87mtoch23c.fsf@HIDDEN> Date: Thu, 16 Sep 2021 19:36:12 +0200 In-Reply-To: <87mtoch23c.fsf@HIDDEN> (Dima Kogan's message of "Thu, 16 Sep 2021 10:17:27 -0700") Message-ID: <878rzwmnhv.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:2UFp6UIdcfAM/xxtqL7GLLSi6Z9/sSA3Ugas09wIepbYllL4QxR 01HYisoZOlgKR6AnpFTVYIRrTg+hZTaekfPUz1qd185Zt8Vh/VqFeVTCDwruuRnJyGzJmgO DEBmfbhkVne454EQCkBe8RZqwgB97F8UL/N8PD939XrQEYYZ599XwQN32LbOiDUWQK+q/Gq sPle3iCEdYOyZU+24HaFg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:KXubcKw/tVg=:iHBavY4U5LQR3nxTajb76j Qk+Nl0jpJrjhcJzElWIFAo8XKbmYtkJkO7L6qp0QksuUPlAeK0a/vLyEx0ck0P4BsQAB0MU2/ PBFnfeWG2B3pMaKPV8uqIWB9nXao61JbtTdxdVmyXcc39YjoWbeU2HYok4OJxeSYBjSCECuOL 7iljuJKiuK1/CQ63QqP+df+NgP9ZiQFKpVldGeEi8vSZXfFrOaNlrK33CheBbkHTVebHTtAv/ ugLclw9A8OkVb/mijwGKy3+BMtcmew03dIDliKgSIfkmQG8oeQ7GCnPkNIuGKWm24zd3kFPRo +eUBh0XrZCHtk73ayXLRjV6bRtqtqrIePMBkPOzpCzwwNQT9YMOqblOdPnobDkq6swubqfst4 Fw4nKGA808STiTfKGO5nTNHUUunPnZjpqRAOOTjbZhk6LJQM6yELCyZX73QVzRc6YdNJ6I4+P FzBhRm67z9MX1CspHHAxBsxlmmXa5/9E8+5TPsXzJ7p5MZXpkKYVu5zBYxE/uQfGz2B1sb3gX 2ToX+j12Q8yvuMdNyqNflJxGpszRiDaGvhKFbym9bGCotemsztVdU5VRV0skH8QmnSFWkXiho Q9l3rFTh5PhZ6Za8ms11mdi081LqkwDbUbzU26IpwtqEMpONPoTe2VXxZKoRGofdHcMzXVqA1 D2+x9+39oIq/IhRQOyHDcxLwpcBIL4Ajw341tc62Z1zqPQ/5x9ORXbDWMszgjGC27u6MIUu4T 3YehdKWLXfRRJsJXcJfho+Gj3KhpNzIGfsfnSHHiZOtaIx58X7L+lYTPkq7J25WHFz0Rlj+ct cmGko9JpBzD4rZs6I0hyhwW68F3yR75OjD0e/sZ0JT6m4MoGTVNhBbp3OjYKRTOHglvyOm6hW AfhszBVBPG8kzsHbjQ+g2jidZKZyE0mkVl3qTP5FYSVTq0CZ/j0MzHY54R/fafmNd9HQMUyKg iYQ3HK4oSPdFVADbIoz/lvk0jzqDLdAwGUnJwjnh+uVrKib74TMxek3w5on8GaTcn4hLtznS1 AdsZlS1H5usKrkkcnf3+QecGxQYg1GY31FmzQeRVmd+e8XDc7x2r6TPTF8JYazmaaelZ5fY9F MmSVOB0QfwVIlQ= X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Dima Kogan <dima@HIDDEN> writes: Hi Dima, >> Why do you mess with Tramp's cache? Adding remote-file-error to >> debug-ignored-errors, as I have recommended, shall mask the error >> sufficiently. > > Tweaking the cache is the method I've found to work, before I knew about > debug-ignored-errors. I'll do what you suggest next time. Thanks! I didn't want to bash you, sorry. > Thanks Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 16 Sep 2021 17:17:22 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Sep 16 13:17:22 2021 Received: from localhost ([127.0.0.1]:56461 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mQv0k-0000UI-IY for submit <at> debbugs.gnu.org; Thu, 16 Sep 2021 13:17:22 -0400 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]:35049) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <dima@HIDDEN>) id 1mQv0i-0000U1-5S for 49954 <at> debbugs.gnu.org; Thu, 16 Sep 2021 13:17:21 -0400 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id D80FA320091E; Thu, 16 Sep 2021 13:17:13 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Thu, 16 Sep 2021 13:17:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=secretsauce.net; h=references:from:to:cc:subject:in-reply-to:date:message-id :mime-version:content-type; s=fm1; bh=pJFl//Jubfu24l1D9h9NK7jteG lT1vqAZM1CFc8LfXA=; b=BP4fpTgzwkBKunzeqwXCN2HIDiz6rqN811N5YYxkPn dErlovD3TnG9za8OfQ8AwxcYcYnjtM2VblUhiCwLDwZ6ycuURL8Bty7eRPhfhbpZ kPBNB/jY3A8sWWV/rMo29AmC+Adog9tH6XuarNpbqRTmQwbij2KdUuchLIi20AZl 1qnBeQh5kRgtlUAMNP2kOdbtHQWH4oPv5IPckqnPyYXMHCLsIB6+CxlggBBvBQx5 elvMjW9T0VfEfRH1LLxmSQXwlQcNHj8mjYTKTBc93yHrxPEyG/UTh0WSBR+U0JoM BkRLtcxT6hx4cmV1OtJy6AOodWUFV9G0SgEZv/dxTGQw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=pJFl// Jubfu24l1D9h9NK7jteGlT1vqAZM1CFc8LfXA=; b=QfbhDKAJmTjW0iRyKAiIDc 5rloBM77RLm/6nstsWIGX46Cx7xkO+KhyrKX4MKjP6qywJxShIUH0/oFrnB5H3nw jZmHSa/qsHjsfapvoLL/QgHGoXEmKEHqwvuZIv2PLWs/TlGrKcflG/BWJ7pQqdK4 iH+nowSPy2TMz+2/JIvmQ3igG8qFBaPLZzfMtQFSHJj5M+4liPunOzTzA+RpaVnn E0avDArDMhHQ0MP0elOAv75pYzSAIktjTB6zAQKTi8NuORwhhIx+L1KMTtsR/p0I jR7bW804jl6YlKOXaBy7QFX1zHEoLPBIijfR47lc6nGNJAb0TtEjF17PuvBnldDg == X-ME-Sender: <xms:GXxDYXoaDaZW5p-mxhbWvI9Kk4wTSCoLknj-cowthV92LZX6I_8GMA> <xme:GXxDYRr-y_WLS9FID3C6TOwDaw9qsoShXlfin-WpriZRxazDE7gsgPKC_Wm02HigD dq6S7AC4mpQPBeN> X-ME-Received: <xmr:GXxDYUPlfrGn-6H9M0NnG97d0A2BD297VDJJ85mD7Gb2_cHoK4HRUjNPsA88tqKTFRY_FZ2PkuKj2D7WX8glktVMrruPlNV9MJRfY2by_PrDLE1txGs> X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrudehgedguddthecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpehffgfhvffujgffkfggtgesthdtredttdertdenucfhrhhomhepffhimhgr ucfmohhgrghnuceoughimhgrsehsvggtrhgvthhsrghutggvrdhnvghtqeenucggtffrrg htthgvrhhnpeefveefgfettdefvdetgfekvddtffevhfevleelhfejheelgfduffdtiedu ueekheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpe guihhmrgesshgvtghrvghtshgruhgtvgdrnhgvth X-ME-Proxy: <xmx:GXxDYa47qU0Ipr41BiIyy4GSJEK98oYAqsgss7YGwIbjnzutzSFRng> <xmx:GXxDYW6BWEF_Yq6zPLauwgysAAuBG5CDWvEHva6_4pk8H-eoqDByQA> <xmx:GXxDYSiMRo2-8v2ksElzh6qVleNxz3AVUPel_EsBDjQailxw-vfSZw> <xmx:GXxDYbhHvJk91LVJRMbb3Axf7H6tq_qPAItcKdc9-8XfM7T7jPqO8Q> Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 16 Sep 2021 13:17:12 -0400 (EDT) References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> <87o88uisee.fsf@HIDDEN> <87v930msrk.fsf@HIDDEN> User-agent: mu4e 1.4.15; emacs 28.0.50 From: Dima Kogan <dima@HIDDEN> To: Michael Albinus <michael.albinus@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" In-reply-to: <87v930msrk.fsf@HIDDEN> Date: Thu, 16 Sep 2021 10:17:27 -0700 Message-ID: <87mtoch23c.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Michael Albinus <michael.albinus@HIDDEN> writes: > Why do you mess with Tramp's cache? Adding remote-file-error to > debug-ignored-errors, as I have recommended, shall mask the error > sufficiently. Tweaking the cache is the method I've found to work, before I knew about debug-ignored-errors. I'll do what you suggest next time. Thanks
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 16 Sep 2021 15:45:52 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Sep 16 11:45:52 2021 Received: from localhost ([127.0.0.1]:56280 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mQtaB-00068E-Qc for submit <at> debbugs.gnu.org; Thu, 16 Sep 2021 11:45:51 -0400 Received: from mout.gmx.net ([212.227.15.18]:32903) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mQta8-00067y-9H for 49954 <at> debbugs.gnu.org; Thu, 16 Sep 2021 11:45:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1631807139; bh=3M/0d2GzIAdl57TIOYtHWUUC5YTuiQcf2P4ahMUsWgo=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=kd7CMJH4YUQ7aRsLeTNXvSmuKGI14nKM7fkP3hYk5bi/6mKMJMRb87PmOmYGJ/vqX SPNsAKNsthKDMYcSb0t0J8JtRqM8fUkhVKq00hsGPJZcvSUkeAWNwV0wnJ+Ze+9t3o 6lMwtz4y7VoHT7tli2spyxPnRKBJa2jz/bv+UP14= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([213.220.158.132]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MybKp-1mq0gJ4BWH-00yzdv; Thu, 16 Sep 2021 17:45:39 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> <87o88uisee.fsf@HIDDEN> <87ilz1iqu4.fsf@HIDDEN> Date: Thu, 16 Sep 2021 17:45:38 +0200 In-Reply-To: <87ilz1iqu4.fsf@HIDDEN> (Dima Kogan's message of "Wed, 15 Sep 2021 12:25:23 -0700") Message-ID: <87r1domsm5.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:7cQnocjtRCsWFrYJ5KvVSsH3nEx1pdtWOKM9VRguvj0Cm+kWc+S VwmioxXoRGlg/ohuQ7ZGpp0EpaFxef8+ezaNNreWu3tzwudd+cgiHsRAxWZxW/UXjZInNqt m7DjWaTJc94EjuKmpwonokpmBoBIcwspy3wwFWj/JAmf01wU+HD/2TXx5r9sZQBQ0mXrrmb hsYHTFbifyW5XDqwQAITw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Xhib/nu/kxA=:56LIbpAl9amFozCLlKfcvX rbEBVrr2shfQy/hMcfglKKh+KMNUpmMO9fEWJjB2BpiYW64yVzYRXf0S3uUFpDQ8Z7nljUdLM +zGiTs5pJhU+t2l05LGc5BD24c/98Y7+EjXazyYmN+mz7csrQC72fCzinAuFYAkbA7KpVQ4eT 90zmc9Hb8bdhtTG8gbCnkp9V2J9fiaqd+ojiw8F9KJObfwwrsmNqxGWsvccscFsE4uTnBHKlv 1Ao5a07tHxHGFmnVcsXKASqgTpiQunnLNXrvQqnxHf+x5QGilD/PTNXf20YDYjJXlBfVzxSCv H8PKLEzavc7/5tuk8RzH7JShVGt+c7gLD5RjFQShw3BuO9bCPWqQICBRZCmL/cTYv+dbb7pvE rf/btDW+RMKl6KYwe6ugcahiVT3+Tc/zFL8TEn1QP8mWAl3/pw8UwTgzn9WWtvvS/8yE/P4R+ kOVpj6yGaKAVhYzn71DE8wfe7HGS3wfTbyI69SEnSHz9TX1t14PnyGpr/9E6lNJ3JJZpvgovz Qcp82pC4L79putqgKTDnQM52VXY9z0sb/l+mmW4n716t74tYApefgm2GqA8Cv/3FFNFZN38nm ZQKdMfSIs3POWI/N9H7iwC/cWQdL8jHGeO2tqnSyjgEbRCCvfjFSXpm3qZQZBzZlNyXktbzUp H1IZIuozgTSNG1Sq0fECFUKytHaBnCM2+sJbZp+QzqFPSf+Ix3xxyRuPae6+oRlWDGwkTIBOb IFSpczTuXdFHCRwpLMfDHCn2FIPXdohzvh7cfkRkFTxCnHmrIJjOoY5CwcuUvj7CNKwdHYhrK LnomUWn8qXbZXVXuxcnstDNA9YrnnWywv/jOr7t1x3ItD6TK3oRvy458lrcERW+u1eVM5BOEl enNmoMx62i3ZBzvCWgUUmOri6RBxEb3YpHbNl7jr+UFw7Tvp1FqV30Nrw59SRLy9Zr7o8nhrd D/KZA/dzmLR+Xmn1zr0e/v9kSSs4wjkQOOxSJex3fLbrICN31dJfY88bNnJ1yCKZao4JyftL8 WwRr4dfgwZvlT7yYnLcbxf4e1jmFu+0kZI+CTEkCGg2TaZdDMM+sNHe1y0WD2zevIAlhzGoxX TIHs56RIU1JFlY= X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Dima Kogan <dima@HIDDEN> writes: Hi Dima, > I paid more attention to my usage patterns recently. I often have > multiple remote M-x shell buffers going at the same time, using the same > TRAMP connection. One shell might be running a long job, writing stuff > to the console, while I use another shell to do stuff. Could this usage > trigger the race condition you're talking about? If so, setting up an > experiment to try to reproduce the breakage wouldn't be too hard. I have not the problem to reproduce the bug, tramp-test44-asynchronous-requests of tramp-tests.el is good enough. My problem is to find a solution. I'm thinking about using threads, but there are some hairy details I need to solve first. Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 16 Sep 2021 15:42:35 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Sep 16 11:42:35 2021 Received: from localhost ([127.0.0.1]:56269 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mQtX1-00062n-4g for submit <at> debbugs.gnu.org; Thu, 16 Sep 2021 11:42:35 -0400 Received: from mout.gmx.net ([212.227.17.20]:46529) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mQtWy-00062Y-LX for 49954 <at> debbugs.gnu.org; Thu, 16 Sep 2021 11:42:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1631806944; bh=2leSNsBNi0zfx4108m6KIO3z+CL+CKIHHDzh95ky984=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=LipgL58zoiCOptBOTVTdSg0ypykjqoT/tZtj1dF4FmT1YC+ptQTxhgynSUU3YvTLo HuSnhdCUBMha9N+pD+HE61+8w/kVbDzhWgPLP+GOmue3l3faU01NKZExxELfy/uVJH xS6ISJ0lB/zHcCmzuaolaRjvFmzl9poYP5LHf1U0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([213.220.158.132]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1N17YY-1mszG61HqM-012U1T; Thu, 16 Sep 2021 17:42:24 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> <87o88uisee.fsf@HIDDEN> Date: Thu, 16 Sep 2021 17:42:23 +0200 In-Reply-To: <87o88uisee.fsf@HIDDEN> (Dima Kogan's message of "Tue, 14 Sep 2021 17:39:21 -0700") Message-ID: <87v930msrk.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:3fpCk3i9MDZId8XtQveoooIxxCw4TGkWkYUpUU8yYRpwF4oat1n By0rs3PX8UgcYe8jV/8t7u33KlibXGtfiOZzPHgs0Ee/jkpeROkFfiZNCn+Mk5NVnFT0Bru e3RCvu7GK72Q3tZ+K5LcR/Xu/ERpW3v4Kji0F6A01a4hyBxqUjbXC2785UGqjKJItx/UKQx yq1imyY3WLZQZb9f+0N6A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:u7FAdFOeddk=:LfXwft6AJO412SWjw+KEPl 1qNkCWJSe7EgMFeNpWqynl2UyqSrFWhORYXLg+fg3X75MQTkGJHy6EvVH1fsO5SLIQQeZ5U6H aZBIunRPebK2J0mKigo1pbkqYRgtfJF2g/EPhYdd1c9NBHiJp2NnZoeZIrux0sNvEBMM2FJQt 2K7Tk1xhgW9beRNI7Wk1pg1x0bKH+emrwlCaIArV2/GjtaKhkMnjeX2jcKJmL/uEMj5gAvyT8 zVCAOg93c5Zq45uSBIEUwRrXkP9fQVQJUUiGxk1H+3ByQeKOymhAUse4+Pgymy7hvFY6Fuedn cqdDN+bR8A+rkQ2IdLeOF3wR4GGTdJZdPMiHWXSJjQayTP5+AqiJTVi64asFvARDJH2x5bOuQ /IsSmUaSIzigrDO29P2pvJI2Tn+VLlyoKyS/VWlBliPzGQ9NagkQZJUH00gL77PcfpGwhAimH ejwV2MUgUTo40pTIS2BsY0MBT9ear+CWBbqVUOgmJQGU1cewDBpkoULA+il6+ypfEhgn9/Q/J LlkMIvhCH8ikEyrV75p2ieU2im1oExwVVPbIHUsTsM6It290GVdhc2cJJkN2VAX1bsreAFS8o yIZPAFnPaHhWh8xsoEEj/xOGj5tDw+oK5e9pnZRR3gKLlucM2esISIiJ3PPa88c9EVObrntkL F+je/FyTUfuItwHgnaebMBFhBn6sHMdLBDQYrGfMpPnblKz/MTa9UmtxhClyUcx+wWeWeDUk8 WoQRU99oNKufiRRUOWuNu6EhjwSjsXb5zbj8LVWnoerZOihcW+cBgyA79payyZqe2BDpBHfnF ouJY0vzvuDNt6+zZa2CelvNyZhl8watjfIlQqJJYFROYnG9gY9rLcPDbLVAro3Hdcpwc2Qshm j/BKgP0FnKy8ZH/zdApSAYZGuJNyxwLtcOH2Xw9EaVzVgsBCNJKb3kq/sKRQOo1N0NaMSGEyY c530txb+yKfvYevXp3G77BBSH8OVXksvPODWToR1EZURtGSFxA9veJ1Znj/VsPrKx2vMEEkrk RtRIy+Lvstf45A+Y1TkKWeW66AddUJJpRF2RNEHIYiExFnUWEaYhyyEmGo0xw5ppMW6k0C8Tx 6I+oie7WmZPFX0= X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Dima Kogan <dima@HIDDEN> writes: Hi Dima, > Thanks for the explanation. What would be an example of an asynchronous > process? I have several remote 'M-x shell' buffers and probably some > dired buffers looking at remote directories. Is each 'M-x shell' child > an "asynchronous process" for the purposes of this issue? It is an synchronous process, indeed. > Does it make sense to you that disabling caching fixes it? > > Usually, I can C-c in "M-x shell" just fine. When this bug is triggered, > though, I cannot C-c in remote M-x shell processes at all: it fails each > time. Disabling the caching, getting one successful C-c, and re-enabling > it makes it work that time and in the future. Is this consistent with > the failure mechanism you're thinking of? Why do you mess with Tramp's cache? Adding remote-file-error to debug-ignored-errors, as I have recommended, shall mask the error sufficiently. > Thanks Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
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I often have multiple remote M-x shell buffers going at the same time, using the same TRAMP connection. One shell might be running a long job, writing stuff to the console, while I use another shell to do stuff. Could this usage trigger the race condition you're talking about? If so, setting up an experiment to try to reproduce the breakage wouldn't be too hard.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 15 Sep 2021 00:39:19 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Sep 14 20:39:19 2021 Received: from localhost ([127.0.0.1]:50442 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mQIxK-0001ZY-O7 for submit <at> debbugs.gnu.org; Tue, 14 Sep 2021 20:39:18 -0400 Received: from out5-smtp.messagingengine.com ([66.111.4.29]:38187) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <dima@HIDDEN>) id 1mQIxI-0001ZL-Kp for 49954 <at> debbugs.gnu.org; Tue, 14 Sep 2021 20:39:17 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 5BA285C01EB; Tue, 14 Sep 2021 20:39:11 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Tue, 14 Sep 2021 20:39:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=secretsauce.net; h=references:from:to:cc:subject:in-reply-to:date:message-id :mime-version:content-type; s=fm1; bh=r/mkeP1T3Ls5l8xrGtZCN2KpzO OCTolYuPOgzAguXss=; b=k1lmDAjM/dCKPjNd6/R/fZ9mO037+eo5VNLDRUk2Hw 6qkwLNAFvGZFnP0G+vzOxukUGdsBdEne330qtwhbtk99cvHjupbkSPBk8agFewMW GpLKsT+tcgFSrRqwgpircUJnWf6Ljij1p6C6IW+qdIj5skbMGfEgjScTkksMVSWJ oApOKkdFB4w3iL1uRlmUfGMir/fisKxP6oTk2zVi2lMCCVqOrhoiA7yqIo2cpLfZ cQEfDtwjiv3PSnCQZwT/UkkfjqZVgYmItNAb2CCgW8kXzK7GwRRs5MJ0TUnbXGCo PGGDHE07VRbBBp84s8VxRWPbbGozsXb/8jLdboJupbyg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=r/mkeP 1T3Ls5l8xrGtZCN2KpzOOCTolYuPOgzAguXss=; b=eXW1/+elLn8mPvLljP6ON6 ijVbG86ZH8Gnmp7kXmdgjxYslCkpFw41/u9vX9cCs0f5+2rQxIZYHSLUu03tOJ53 dZYClKI8I/jdTELeUqDSqP/k8rPQ9/0ULQCCpnzWAEKy5XGnrP4Fpxx8kXTSsj8x AlF4V6/ZEeuYNKX8tqwmr0Ehz+QLRlxU9BoribJI7qe0ZB+svZJKcyngkPbXCB1v cNV3LjdEKXQZrojjvJzerw8Z55d/LgAb0P7YQhSndFS9YYV/mny/1xIllZ9Yna0/ EhBHYfAsFAYu0Zfx3QCULqIBv7L/i0ZqzMHPZq8iUZ/fJ9jqWXMC29MMA78+utmw == X-ME-Sender: <xms:rkBBYQUBGif61LaBxGXGLn87f460qdcb4i_V2UXOBICLHbGXnwIGgw> <xme:rkBBYUkJj5GszepG21aHYpUN-nZylpyE9J6QO6jxN-u64kP0dSZgyohKBS-k3IfHx MFOzCMIJIyaqjma> X-ME-Received: <xmr:rkBBYUbi6lBXiSzqQjkfxVYiPncZZc4L_h3Zq-SU2cDmZ3O0txvScG7TitxcIU_5vHMhZ0PqnXKTNFvsqInWLKpKSPzHcNQllZCcYhUgbye7-3ykkH0> X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrudehtddgfeejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfhgfhffvufgjfffkgggtsehttdertddtredtnecuhfhrohhmpeffihhmrgcu mfhoghgrnhcuoeguihhmrgesshgvtghrvghtshgruhgtvgdrnhgvtheqnecuggftrfgrth htvghrnhepfeevfefgtedtfedvtefgkedvtdffvefhveellefhjeehlefgudfftdeiudeu keehnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepug himhgrsehsvggtrhgvthhsrghutggvrdhnvght X-ME-Proxy: <xmx:rkBBYfWnuAyJ18yzzY7Pdrj1FLoQgBwzE9_htn0hwTyZOb4b9mGmsQ> <xmx:rkBBYallpdkUrks8AVroasW2Bj8z2bbXIdbb5CSIMWCVjOILqfeHAg> <xmx:rkBBYUe7dAuWkBgSLvyWMt3vZfSKyNGMNMMtLWhnOm3dM4x16_ai-w> <xmx:r0BBYRvCO6dFNd4VnaLeoeddgDyma1My00T9i5q1DwMRbSjPwyrfrA> Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 14 Sep 2021 20:39:10 -0400 (EDT) References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN> <87pmtfjyw4.fsf@HIDDEN> <878s03s3t1.fsf@HIDDEN> User-agent: mu4e 1.4.15; emacs 28.0.50 From: Dima Kogan <dima@HIDDEN> To: Michael Albinus <michael.albinus@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" In-reply-to: <878s03s3t1.fsf@HIDDEN> Date: Tue, 14 Sep 2021 17:39:21 -0700 Message-ID: <87o88uisee.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Thanks for the explanation. What would be an example of an asynchronous process? I have several remote 'M-x shell' buffers and probably some dired buffers looking at remote directories. Is each 'M-x shell' child an "asynchronous process" for the purposes of this issue? Does it make sense to you that disabling caching fixes it? Usually, I can C-c in "M-x shell" just fine. When this bug is triggered, though, I cannot C-c in remote M-x shell processes at all: it fails each time. Disabling the caching, getting one successful C-c, and re-enabling it makes it work that time and in the future. Is this consistent with the failure mechanism you're thinking of? Thanks
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From: Michael Albinus <michael.albinus@HIDDEN>
To: Dima Kogan <dima@HIDDEN>
Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes:
"Forbidden reentrant call of Tramp"
References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN>
<874kby7wn5.fsf@HIDDEN> <875ywdquds.fsf@HIDDEN>
<87pmtfjyw4.fsf@HIDDEN>
Date: Sat, 11 Sep 2021 14:19:06 +0200
In-Reply-To: <87pmtfjyw4.fsf@HIDDEN> (Dima Kogan's message of "Sat,
11 Sep 2021 01:32:27 -0700")
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Dima Kogan <dima@HIDDEN> writes:
> Hi Michael.
Hi Dima,
> So I've seen this a number of times now, and it really looks like the
> caching mechanism is the problem.
No, it isn't. Tramp uses its cache just as memory. The problem is
somewhere else, see below.
> Every time I see "Forbidden reentrant call of Tramp" when trying to
> C-c C-c a remote process, I re-evaluate tramp-get-connection-property
> with
>
> (when (and (not (eq cached tramp-cache-undefined))
> ;; If the key is an auxiliary process object, check
> ;; whether the process is still alive.
> (not (and (processp key) (not (process-live-p key)))))
> (setq value cached
> cache-used t))
>
> removed. This effectively disables the caching mechanism. Then I can C-c
> C-c my process, and it dies like it's supposed to. TRAMP feels slower
> after than, as expected, so I put tramp-get-connection-property back to
> what it was. Eventually the problem comes back, and I do the same dance
> to "fix" it.
The Tramp manual tells you how to bypass the problem, see Frequently
Asked Questions:
--8<---------------cut here---------------start------------->8---
=E2=80=A2 I get an error =E2=80=98Remote file error: Forbidden reentrant=
call of
Tramp=E2=80=99
Timers, process filters and sentinels, and other event based
functions can run at any time, when a remote file operation is
still running. This can cause TRAMP to block. When such a
situation is detected, this error is triggered. It should be fixed
in the respective function (sending an error report will help), but
for the time being you can suppress this error by the following
code in your =E2=80=98~/.emacs=E2=80=99:
(setq debug-ignored-errors
(cons 'remote-file-error debug-ignored-errors))
--8<---------------cut here---------------end--------------->8---
In order to understand the problem, let's assume the following scenario:
- You have connected to a remote host, say "/ssh:host:". Tramp uses
internally the process *tramp/ssh host* for communicating with that
process.
- You have also started another asynchronous process to that remote
host.
- Now, while normal use of Emacs, the function (file-attributes
"/ssh:host:/path/to/file") is called. Tramp sends a command to the
process *tramp/ssh host*, like "stat /path/to/file".
- While Tramp waits for the answer of the "stat ..." command, your other
process has finished. It might have a process sentinel, which is
called exactly at this time, because Tramp is in a loop
(accept-process-output ...).
- This process filter might trigger another file operation, like
(delete-file "/ssh:host:/tmp/tmpfile"). This would require to send
another command to the *tramp/ssh host* process like "rm -f /tmp/tmpfile".
- Since the first command, "stat ...", hasn't been finished, this would
result in inconsistencies. Tramp detects this situation, and raises
the "Forbidden reentrant call of Tramp" error.
Not so easy to solve. Ideally, remote file name functions initiated in
process filters, process sentinels, timers and alike shall wait, until
the currently executed remote command has finished. Don't know how to
achieve this.
Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
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User-agent: mu4e 1.4.15; emacs 28.0.50
From: Dima Kogan <dima@HIDDEN>
To: Michael Albinus <michael.albinus@HIDDEN>
Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes:
"Forbidden reentrant call of Tramp"
In-reply-to: <875ywdquds.fsf@HIDDEN>
Date: Sat, 11 Sep 2021 01:32:27 -0700
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Hi Michael.
So I've seen this a number of times now, and it really looks like the
caching mechanism is the problem. Every time I see "Forbidden reentrant
call of Tramp" when trying to C-c C-c a remote process, I re-evaluate
tramp-get-connection-property with
(when (and (not (eq cached tramp-cache-undefined))
;; If the key is an auxiliary process object, check
;; whether the process is still alive.
(not (and (processp key) (not (process-live-p key)))))
(setq value cached
cache-used t))
removed. This effectively disables the caching mechanism. Then I can C-c
C-c my process, and it dies like it's supposed to. TRAMP feels slower
after than, as expected, so I put tramp-get-connection-property back to
what it was. Eventually the problem comes back, and I do the same dance
to "fix" it.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 10 Aug 2021 13:53:03 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Aug 10 09:53:03 2021 Received: from localhost ([127.0.0.1]:58803 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mDSBj-00078E-B6 for submit <at> debbugs.gnu.org; Tue, 10 Aug 2021 09:53:03 -0400 Received: from mout.gmx.net ([212.227.17.21]:53241) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mDSBe-00077f-Rt for 49954 <at> debbugs.gnu.org; Tue, 10 Aug 2021 09:53:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1628603569; bh=mQvZ/B2LNuDrn5RD3w9NN+JmHJizSYxGW1iwtDHGTpg=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=Fxqkcgjn15gtjR3bpghEl+PNDHnHMMFXX0WAH2A5bsUTQoxdVIVQQ2MUv1JAdZ0Sd r9cVl/5Ic5PMGyFF4IG9MBooaQVLG4DMbdGEgf7u4ZkIYCf6AZ2XLQREDFiYERA298 iHFZTaY0nQ+y4CY8e6tBAo5pyPSA3DipnCxrJrIQ= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([213.220.147.198]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1M9Wuq-1mAAOT1Ri8-005d0C; Tue, 10 Aug 2021 15:52:49 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN> <874kby7wn5.fsf@HIDDEN> Date: Tue, 10 Aug 2021 15:52:47 +0200 In-Reply-To: <874kby7wn5.fsf@HIDDEN> (Dima Kogan's message of "Mon, 09 Aug 2021 21:26:38 -0700") Message-ID: <875ywdquds.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:ipxtwv8ivUWckEwWuSq0agHSl7BWCI0LlEdy5zB8kjw4RLO69C7 07rNKA+m2VYCOtMXrntHFC8f9O1TBpuZFQksXJWrh0c8K2MQdVxek81gUPqVPGXD0nWYgsQ h4qo31SUL7Et0V849MjOQexdrJgDTF4wMQzxCjMF2ZglPrkNq3jOlQwetyqCjYJ/hUsUkkU 9PVO+i6+vQet0a73Agomg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:2Z3Sib9qaPc=:3skVxbhMHHaAQalLL2n76o QiTamzz+5MZIt0zmQ44U2w6/siNHVG8m5+beiVuXiQDYgIIEM3PQxXgjgfgIlCO++ZzPtw+wD bVMNOfsDyvum+MY2zEdn848/SdO+TH5GB3ZvCiYLkW9LNkRlv7t50HOE1aVwryYQw2zFkhYb4 ayPPnQM+Lpj+NFxWcg4EAqURZi0UE0CTPpc8jobx1jYvre/GuY0MUePK3VoqVv/TD7vJLl5XW wKWqubodM7l9ZjFEM+LRNEazTsiVUL1eR6PgC14m47y5DYfnGxfUmqKtFzsvTSo4kaFgsLtjk ZJA+fd04deyT+CQ8C76+ZuemC8d29FlcEP851a4sl3ZBqC1B6SEKFX1MHv9C27uUOVN1AunNy CVJNB/CbiwnQN670rvEHNg5bmh8qKoHwVmHjJe4V9TVqv3PT3xUss0yRlHR4EzVzwNK4kvBg1 hmEDejdmGLkoi41SWRCOco7UUvm6/ZELohVK7MQUXv6ZYEokighHfjlvl43p1wLdw9JghXzMy T5jPlPJNrVIF5fY3gXuVCGuahf1SV2xEfgDpbCUWlplBdb2Htf7Z8MH7SKTDmel4cr7iKWAJ/ W/i+Rv2nGeb1iSpJ3zL29jDzmvNHVCpKanf3+56SI7X+ibBtVApaRbPCn1sqDggcz5VLAZ6aN SNXAB8KRFBDI8SQOP+inv26As4HDR/oq4BGk3VJ1mJwNQsr/FEPEwVwC2+5B17eBZmnfxZOsR 6cvmyRsSqZbkPxCWpMI0rHIM7qOojIE579eACBT2/3yifP+Rgcp2P/rAuwjiywAvU59fVwUca n/VMlKVbmD3vR2rTJ5HjgEYArEz7MG2MSS+j+V+0cVDl16UWOMxUkfmWUdDmv5vkYDAln2jrB j4GUtz9CaXCbN43HI+0CyRgVvNiHWgdp/LMQi5YvWG+91CrE6N/EDAvsE7CEE+qPyNprdGoc3 A85YeedV8nGKb0vHmU5LVxyyQT4wMwI1vPPFRRosNOxQvrwBMwTk/aT8VtsCucH5OlTy7Lo3l ZDw98Cx3vyMfX3F2ccyDprC221Jdb9CAxD6LOSEI2SOcaDoQ/TsmWFPl3ax+Dd9reb1rbxas1 /uUcJ2RzhTqzH/Iy2r2sLJcsx70MHo0ZbiJu7tJbnrLmj9lDnWWxhI9Mg== X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Dima Kogan <dima@HIDDEN> writes: > Hi Michael. Hi Dima, > I did some debugging, and it appears that the tramp property-caching > mechanism is failing. We exit the (with-tramp-locked-connection ...) > form, but when we try to enter the next (with-tramp-locked-connection > ...) form, it looks locked because > > (tramp-get-connection-property proc "locked" nil) > > is evaluating to t. I instrumented (tramp-get-connection-property), and > I can see that this t comes from the property cache. I can "fix" the bug > by removing the > > (when (and (not (eq cached tramp-cache-undefined)) > ;; If the key is an auxiliary process object, check > ;; whether the process is still alive. > (not (and (processp key) (not (process-live-p key))))) > (setq value cached > cache-used t)) > > form from (tramp-get-connection-property) > > Can I get the intent of this form? Are you trying to use this form if > the process is alive, or if the process is dead? My process is very much > alive, so this form is being used. Is this what we want? No, I believe the mechanism is working correctly. A lock is placed on the connection process of Tramp, and it is kept until the related operation has finished. The process is expected to be alive, the additional check of process-live-p is just a reassurance. > If it is what we want, then the cached value of t is the problem. I > haven't looked into why that's happening yet. The problem is the following: Tramp sends a (shell) command to the remote host, and waits for the reply. This must be atomic, no other command shall be sent in parallel, in order to get the proper reply. If there is asynchronous code running, from a timer, a process filter or sentinel, or process interrupt, this can happen: a second command is sent, while the other command didn't get its reply yet. The macro with-tramp-locked-connection shall protect us in this case, and it raises the respective error. That's not a perfect solution. A better way would do use threads with mutexes, so that the second command can wait until the first command got its reply. Something like this needs to be implemented. > Thanks! Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
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References: <875ywf9ea7.fsf@HIDDEN> <871r72ssqi.fsf@HIDDEN>
User-agent: mu4e 1.4.15; emacs 28.0.50
From: Dima Kogan <dima@HIDDEN>
To: Michael Albinus <michael.albinus@HIDDEN>
Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes:
"Forbidden reentrant call of Tramp"
In-reply-to: <871r72ssqi.fsf@HIDDEN>
Date: Mon, 09 Aug 2021 21:26:38 -0700
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Hi Michael. There's no rush to work on this. I'll reply here for
whenever you get around to looking at it.
I did some debugging, and it appears that the tramp property-caching
mechanism is failing. We exit the (with-tramp-locked-connection ...)
form, but when we try to enter the next (with-tramp-locked-connection
...) form, it looks locked because
(tramp-get-connection-property proc "locked" nil)
is evaluating to t. I instrumented (tramp-get-connection-property), and
I can see that this t comes from the property cache. I can "fix" the bug
by removing the
(when (and (not (eq cached tramp-cache-undefined))
;; If the key is an auxiliary process object, check
;; whether the process is still alive.
(not (and (processp key) (not (process-live-p key)))))
(setq value cached
cache-used t))
form from (tramp-get-connection-property)
Can I get the intent of this form? Are you trying to use this form if
the process is alive, or if the process is dead? My process is very much
alive, so this form is being used. Is this what we want?
If it is what we want, then the cached value of t is the problem. I
haven't looked into why that's happening yet.
Thanks!
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
Full text available.Received: (at 49954) by debbugs.gnu.org; 9 Aug 2021 12:33:23 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Aug 09 08:33:23 2021 Received: from localhost ([127.0.0.1]:56270 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mD4T5-0004Fw-IU for submit <at> debbugs.gnu.org; Mon, 09 Aug 2021 08:33:23 -0400 Received: from mout.gmx.net ([212.227.15.19]:47315) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael.albinus@HIDDEN>) id 1mD4T2-0004Fh-4v for 49954 <at> debbugs.gnu.org; Mon, 09 Aug 2021 08:33:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1628512391; bh=0tCg7iGwyFYFKX23kN28POzTfNEXITMZZHmWVzYgSVw=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=ggrR7u3vFe3SZgvsMFDQnzIi53yLvhcTXLZFKULhX9hq6mSK462FblBOL+OKRKABd HXRlafsLa72DCZcCR5Ly+3F3H4xLu9qpmQH+UHqEJsTYXVq2nWLmdRNL1jTXkExCX/ ww8fyIgvLAnK5aPi4gjkrwWpwu7KxJSqmkMtdnKY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from gandalf.gmx.de ([212.91.238.138]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1N2V4P-1nGQhd3clD-013vUJ; Mon, 09 Aug 2021 14:33:11 +0200 From: Michael Albinus <michael.albinus@HIDDEN> To: Dima Kogan <dima@HIDDEN> Subject: Re: bug#49954: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant call of Tramp" References: <875ywf9ea7.fsf@HIDDEN> Date: Mon, 09 Aug 2021 14:33:09 +0200 In-Reply-To: <875ywf9ea7.fsf@HIDDEN> (Dima Kogan's message of "Mon, 09 Aug 2021 02:08:00 -0700") Message-ID: <871r72ssqi.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:go6eKnGfIyL8iDSO5JlCs8RgCCyeExvK7wyrRpZT8t5zHnVjwg0 CT+f2wFHYt980CyxD4NplD/ay0qub+GM7Jbn6k1JaYAVsvkWSpundYHB6uFckRO1LPDbiC2 q1M25/9An9OBAZ3v7RY9/Jt2U9SQRyzsomlxsqBMc/KFwP5Gk9lWN9eSVT7p9XNj78oSx5/ 0mZNWvqL2z9YNqmj0q9LA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:cLCbWLIb8nM=:HjSpnz3lohnGBh+XeGVU6X oyLqlpz37OSB9qDt0m7yEo8BL+t2kCravEsCOxtbG7B802ckgrg/ByxmOxrqBycAn07uu7OHo AC4YtucqblDMREwCDBR98oTg/sfbnyLqbbU5jxAH205SOXvzsyq1GiBpjZH6ybVKK1joj0XJd GgkJ5AXhP+/2WtHwCWMrdMiyeZGlTXzOfPUtDyO9Dui7DAHvgHgE/IOarEktdXNbVk8waqnoI B5dxaESmfFETBPENX/o7zk2t3rYpAIZR+UqCL/MJDt6eHyS5/lSXccZFdLlftomFvIlSjWbB0 yS7dQ2YfakRM5XqSLKphyUtTHcjU7HnLVjXbx0Ems3mdGgahL8htIfC38iOelvph4stApH3sY QycMOHzsCmprdUFxdugBDxsD0x43NBdy5lhOAH51o7hK+3miRGWFwUJYZWHG8EH7Xivtn7/Im /SHKyjUvgGbb3BuMw3rwfbmOndMDzpVb39jP5aaDYCDufJRg7ucb/jAphD6/qrQKkqedc/2jq 9zG/OUk6Qkq/t+P06kqA9seMD8mJQNOLTZ9u5uPi3rXnUolUrCdjgEB5u4PKIMSoszNv9oK1k mWUWHW06VG7dQS0LYgzOQ2OixdYKGOazCRKFpUoxoG61HF4djK4CMQPQx7XI9oWJP6jDEQoXN 6OEIIGC5OSe+b2lGcUEQdQWsSrERVk/ynIlFV63iRixYYdFGa/C8aDEaDYdl2AzgCyzbSyDef w6Yh1Y7Eb+kbXQj2lwVmoR0Brnne6Rkf/MsWm7VrkGMuIHbl6P4PX/EJ8fTUtY9QFGIXHgxWM UiWE9O3G9z2STtnDDldeeeWyAC+Wcso6F5OfpGUrcZlKbY0FDmwvXswdhnMbPHqcDdh3BBCU6 4TpZHznKRjxVkOQ6qhBXke4aNkQYIqKsA23MpcWLMu4Oqb8Mv3OgLJHT9MYViw4jvijkIsbNU 8mdTbDMZAQgrWzrli/I6VNnHL5kTwdQ72Buc30/N5iqcmxPoW4pamaAj2tgc9Uv/PjyDzkVhB Bh57sqbCg6twtkHV19vwksaYt070j5ygP0hfLNSQjsjFqg8A1gHxutuaDp9jWOXHXvIAVRwPj dsLseJO4H+XLgAPnr0yEdMSOyVZie9qqEGWP6uPQSVvxXQ3E3awraJJAw== X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 49954 Cc: 49954 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Dima Kogan <dima@HIDDEN> writes: > Hi. Hi Dima, > I don't know how it's unlocked. Debugging suggestions? Should I just add > more diagnostics in every lock/unlock path? Do we think this may be > fixed in the latest emacs? This error message has been added to Tramp 2.5 in order to get more diagnostics when the problem happens. It is an indication that a remote opeation has been started asynchronously, from a timer, a process filter or sentinel, or other asynchronous invocation (like interrupt process). I don't believe it has been fixed yet in Emacs master, I haven't done anything in this area for weeks. I'll try to fix your use case, but it might take time - these days I'm occupied otherwise. Holiday season. See the respective entry in Tramp's FAQ (info "(tramp) Frequently Asked Questions") See also the discussion on the Tramp ML <https://lists.gnu.org/archive/cgi-bin/namazu.cgi?query=forbidden&submit=Search%21&idxname=tramp-devel&max=20&result=normal&sort=score> > Thanks! Best regards, Michael.
bug-gnu-emacs@HIDDEN:bug#49954; Package emacs.
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From: Dima Kogan <dima@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 28.0.50; TRAMP: cannot kill child processes: "Forbidden reentrant
call of Tramp"
Date: Mon, 09 Aug 2021 02:08:00 -0700
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Hi. I see this problem often in everyday use of emacs, but every time I
try to construct a reliable reproducing recipe, it always works ok, so
some of this report is a request for debugging help.
I've seen this sort of bug for years, so probably it exists in the
latest emacs. Today I'm seeing it in a build from a few weeks ago:
553ad9c9e85 built on 20210716. I don't know how to reproduce in the
latest emacs. In the session I have running (from the 20210716 build) I
have a shell buffer that shows the problem 100% of the time. New shell
buffers do not show this problem.
A recipe that should work:
1. emacs
Run emacs. Possibly my config is triggering it. I don't know
2. C-x C-f /ssh:server:
Open a remote TRAMP connection
3. M-x shell
Open a remote shell
4. cat
Run a "cat" command in the remote shell
5. C-c C-c
kill the "cat"
In fresh emacs sessions and fresh shell buffers this works fine: the
"cat" process is killed and we get back to the prompt. Something happens
with older shell buffers where the child process is NOT killed, and
emacs complains with "Forbidden reentrant call of Tramp"
I just tried to (setq tramp-verbose 10) to get a debug log of the
failure. It says this:
;; Emacs: 28.0.50 Tramp: 2.5.1 -*- mode: outline; coding: utf-8; -*-
;; Location: /usr/share/emacs/28.0.50/lisp/net/tramp.el.gz Git: /
01:49:39.391745 tramp-interrupt-process (5) # Interrupt process shell<6> with pid 3705628
01:49:39.391864 tramp-get-connection-property (7) # null-device /dev/null; cache used: t
01:49:39.391946 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.392019 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.392089 tramp-get-connection-property (7) # process-buffer nil; cache used: nil
01:49:39.392180 tramp-get-connection-property (7) # last-cmd-time (24848 60388 520023 896000); cache used: t
01:49:39.392262 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.392325 tramp-get-connection-property (7) # remote-echo nil; cache used: nil
01:49:39.392385 tramp-send-command (6) # echo are you awake
01:49:39.392447 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.392509 tramp-get-connection-property (7) # chunksize 0; cache used: t
01:49:39.392573 tramp-set-connection-property (7) # last-cmd-time (24848 60451 392543 712000)
01:49:39.392637 tramp-send-string (10) # echo are you awake
01:49:39.392698 tramp-get-connection-property (7) # process-buffer nil; cache used: nil
01:49:39.392775 tramp-get-connection-property (7) # locked nil; cache used: nil
01:49:39.392828 tramp-set-connection-property (7) # locked t
01:49:39.392912 tramp-flush-connection-property (7) # locked
01:49:39.392981 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.393036 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.393120 tramp-get-connection-property (7) # locked nil; cache used: nil
01:49:39.393173 tramp-set-connection-property (7) # locked t
01:49:39.441305 tramp-accept-process-output (10) # *tramp/ssh fatty* nil run t
are you awake
///66c246702753a7fa497f74164e69b140#$
01:49:39.441619 tramp-flush-connection-property (7) # locked
01:49:39.441783 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.441931 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.442103 tramp-wait-for-regexp (6) #
are you awake
///66c246702753a7fa497f74164e69b140#$
01:49:39.442387 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.442556 tramp-get-connection-property (7) # remote-echo nil; cache used: nil
01:49:39.442710 tramp-send-command (6) # (\kill -2 -3705628 || \kill -2 3705628) 2>/dev/null
01:49:39.442872 tramp-get-connection-property (7) # process-name nil; cache used: nil
01:49:39.443034 tramp-get-connection-property (7) # chunksize 0; cache used: t
01:49:39.443204 tramp-set-connection-property (7) # last-cmd-time (24848 60451 443130 172000)
01:49:39.443376 tramp-send-string (10) # (\kill -2 -3705628 || \kill -2 3705628) 2>/dev/null
01:49:39.443589 tramp-get-connection-property (7) # process-buffer nil; cache used: nil
01:49:39.443792 tramp-get-connection-property (7) # locked nil; cache used: nil
01:49:39.443936 tramp-set-connection-property (7) # locked t
01:49:39.444124 tramp-flush-connection-property (7) # locked
01:49:39.444293 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.444433 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.444579 tramp-get-connection-property (7) # locked nil; cache used: nil
01:49:39.444719 tramp-set-connection-property (7) # locked t
01:49:39.493255 tramp-accept-process-output (10) # *tramp/ssh fatty* nil run t
///66c246702753a7fa497f74164e69b140#$
01:49:39.493535 tramp-flush-connection-property (7) # locked
01:49:39.493687 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.493835 tramp-get-connection-property (7) # check-remote-echo nil; cache used: nil
01:49:39.494001 tramp-wait-for-regexp (6) #
///66c246702753a7fa497f74164e69b140#$
01:49:39.494263 tramp-get-connection-property (7) # locked t; cache used: t
01:49:39.512596 tramp-accept-process-output (10) #
backtrace()
tramp-error(#<process shell<6>> remote-file-error "Forbidden reentrant call of Tramp")
tramp-accept-process-output(#<process shell<6>> 0)
tramp-interrupt-process(nil t)
comint-interrupt-subjob()
funcall-interactively(comint-interrupt-subjob)
command-execute(comint-interrupt-subjob)
01:49:41.733242 tramp-accept-process-output
If I open a fresh shell in the same emacs session, it works OK. That
debug log is similar, except the last tramp-get-connection-property line says:
01:48:36.571873 tramp-get-connection-property (7) # locked nil; cache used: nil
I don't know how it's unlocked. Debugging suggestions? Should I just add
more diagnostics in every lock/unlock path? Do we think this may be
fixed in the latest emacs?
Thanks!
Dima Kogan <dima@HIDDEN>:bug-gnu-emacs@HIDDEN.
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