From owner-freebsd-current@freebsd.org Wed Aug 28 22:34:26 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9442EE8386 for ; Wed, 28 Aug 2019 22:34:26 +0000 (UTC) (envelope-from mms.vanbreukelingen@gmail.com) Received: from mail-qt1-x842.google.com (mail-qt1-x842.google.com [IPv6:2607:f8b0:4864:20::842]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46JgXK56Bcz3KV7 for ; Wed, 28 Aug 2019 22:34:25 +0000 (UTC) (envelope-from mms.vanbreukelingen@gmail.com) Received: by mail-qt1-x842.google.com with SMTP id u34so1493879qte.2 for ; Wed, 28 Aug 2019 15:34:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:reply-to:to:cc:message-id:subject:mime-version:references; bh=0q3Yk1Hxyh2BnG/Codxj0+k4SCHONOKJayyVAIrGhZ0=; b=AqbOmjdSHpAgnsKzvA7sEqqF4fgoxxhFp1sBkUjJ4ZGH1x2gRlM6+adhQD259C6mur sVI+gcgOu5EWTTGDvwLWSveelFi7fpSJTMQjmJdM68kMJYWd46GGu8Ri/RKHmBzLlSlE 1+aW2TrWRfmYrRmrSEPzVAObiderkjGV5I5FRcq8qHyxKss3K0uNLBOAfnvLgr0pF64/ fvyQ+IUJH4IlaUV881vsTp75Cw1HaI+CW0SrrMHOaAaMHuJ9GmnrXZouYfArrDsP3dWb 5ZWLyFlSZBUZirwrNDSDNvBzxqMMUWU4/8iIqNROCQQM9qmAByjqYXzXSwCz9M1RwbF2 /zyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:reply-to:to:cc:message-id:subject :mime-version:references; bh=0q3Yk1Hxyh2BnG/Codxj0+k4SCHONOKJayyVAIrGhZ0=; b=hXbDE5PeppGoQurTXCqgUwBj1KNJV1sUEzBFfO8qDP1op5ajaN4i7dERL8UuXfRnGw nx+01Kaw80ItexnnT1PSwbJGlz9hrvW+q4/CMDrFkYarXwDOWuUEZ7DgUXNITl9ytOY8 8538ke39mpl6P3DdMcLOhSJMvGRpOTE4T4LLHxPQVlQbIRc8cB6091NZHEBHhQMvxG8P pb3js+mm+nVi6hNQSJpA32pehoyKiZuWHqgqYaMZwWGen/uu+6ksTGMu8kUa9LaOdfUp NB0FK2HJfY91Tc2Uu3kEbmMmw2h37Q0dZwRD2lQO2w/zcMDqf7UgZ/6V0i1fcZAy2o5Z gpxw== X-Gm-Message-State: APjAAAVWAurDJe6264W5ENGzE4m9OEzteYN4FnzpsJQmDipWiWmbnyJW IzI5ILEJABs2pENHiuLyBkBvYwuqcmA8iA== X-Google-Smtp-Source: APXvYqzISMf/JKNokffyE5ZK2ERTDX2e6xVUBA4r2CO+nAr5upSjl5SsLZysiFOQ0vda/Ha1K7xwyQ== X-Received: by 2002:ac8:14f:: with SMTP id f15mr6987770qtg.295.1567031664593; Wed, 28 Aug 2019 15:34:24 -0700 (PDT) Received: from sonic302-3.consmr.mail.bf2.yahoo.com (sonic302-3.consmr.mail.bf2.yahoo.com. [74.6.135.42]) by smtp.gmail.com with ESMTPSA id u28sm395921qtu.22.2019.08.28.15.34.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 28 Aug 2019 15:34:24 -0700 (PDT) X-YMail-OSG: MoTQt1YVM1lwmCcOLW1deH5Btl4EK01M6e6mm1BUNqGdHcAt44IoGGUWx6aRbcP 3V8aL5ZWmbArSh_v9Th2Va0zL.vcgWZAKSJBXxe5hwK1toqixxWdNEs56R7rL4RctivuI4825bky BC_tT26K_9J94UBpb_DW4k.C0MvsVkbQNwkkiUbZhLcMxfMv3RFP0HGNV.PT0zCfrrTSAgBZzcuV 0OiNPfW6l9g9dTWvI7Puf4oJqiKRQZc8xqO5XleN0QZlqBxe32VETdMr3FuXZwPQzZpNlz5IOx_v 5QCR2I8vGYzknwd4ev8NnC.Mu6XARpUCDDURsPsssbyc288mEjOMFxQaA7VKc.9TSYdY7kDk17cH Ov2w2qW3tTGlVLTvIw1Uw0shnoDT6KgvdlaDAU_nfo5eqlzCGdxweAnmqQxGnIQMrR50udfN.Chw 3PG2rS.yszThwTwbE5Ks7DNrpRU14loFj9wj6T4RUlqmBt12oY3P23lZALcA_sDUrwJ_tgHO8UNB gUtdJRRQrQjFCvDBve5A3XEN_Pcys7NYwuKabo8bC49cmuKGSiDLh1W2BaLu6E62h3skhVAyKhcp 2KOPiDiJM5jlHcUkXU.HT3NarOeLfh1v8uh3aEJoe6FtPdYigplIx5AcVK0zoL1lGZdtFrczu5rw SDAoLrtUx6X.4ofbvNScjNpd6KlxMug4THSXfYt0.SF1bQqOe0hE.qmD9gv2QxMqHHwr.Wa3aQbY 6_lWgNVcngeEAPgEfNXjCRy2qJizs5m8XYv7BDNbIVRM9kQqkcpaXfY40JulC2nCmkv6bcx9XEX1 DUyQRsQbhxj9qLZO8.ovXtGLOuNbU1TM80Wqx5VL4bJr6e_8QNVRTDd7kO9SbwbPObnm9KLfl6Gz WWim0EWHvAmwi_GBItqHlmQZtfKorBxxsXiFjcFS5nTji2uK5f2YM.5FdhOsDLjE.Q2KfnMUD9cS ecmCDimmLfpHfhRyxNVGaiueuQKNQ0AwcLxRjMvImHvkAf6cK.io5jFnOkrhpstaYYsHI9ObeMEo HoO67AMV0P.rFexpHxQ3eNFXBa8vqwBFXMCby87j5KbnkVntoafMGnY5s9HAeocWxHIirN8Bqypx uihszLK0j7_GkF1N9eLnilWoQYQuoGt2O7OHwYuDh07QLNMiWD39aMC8z0psHx1jshsuVh8mvJLu t5JFDyfMSs4NJSyH1Mh7xCdFoRXs1LjlH3DGIkLDRGGCkft7G1ea.jl4CqDVDiwM7gFg- Received: from sonic.gate.mail.ne1.yahoo.com by sonic302.consmr.mail.bf2.yahoo.com with HTTP; Wed, 28 Aug 2019 22:34:23 +0000 Date: Wed, 28 Aug 2019 22:34:21 +0000 (UTC) From: "mms.vanbreukelingen@gmail.com" Reply-To: "mms.vanbreukelingen@gmail.com" To: Maksim Yevmenkin Cc: "kostikbel@gmail.com" , Warner Losh , Hans Petter Selasky , "freebsd-current@freebsd.org" Message-ID: <1115053193.64543.1567031661382@mail.yahoo.com> Subject: Re: Kernel-Crash when working with ubt0 MIME-Version: 1.0 References: <1115053193.64543.1567031661382.ref@mail.yahoo.com> X-Mailer: WebService/1.1.14253 YMailNorrin Mozilla/5.0 (X11; FreeBSD amd64; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36 X-Rspamd-Queue-Id: 46JgXK56Bcz3KV7 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=AqbOmjdS; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of mmsvanbreukelingen@gmail.com designates 2607:f8b0:4864:20::842 as permitted sender) smtp.mailfrom=mmsvanbreukelingen@gmail.com X-Spamd-Result: default: False [-3.98 / 15.00]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; HAS_REPLYTO(0.00)[mms.vanbreukelingen@gmail.com]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-0.98)[-0.984,0]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; REPLYTO_EQ_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TAGGED_RCPT(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; FREEMAIL_REPLYTO(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2.4.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(0.00)[ip: (2.23), ipnet: 2607:f8b0::/32(-2.85), asn: 15169(-2.32), country: US(-0.05)]; FREEMAIL_CC(0.00)[gmail.com] Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Aug 2019 22:34:26 -0000 @Maksim, I first did a "git apply -R bt.diff" and then root@freeBSD13:/usr/src # git apply --stat --check --ignore-whitespace ng_btsocket_hci_raw.c.diff.txt error: patch failed: head/sys/netgraph/bluetooth/socket/ng_btsocket_hci_raw.c:1156 error: head/sys/netgraph/bluetooth/socket/ng_btsocket_hci_raw.c: patch does not apply Rebuilding with MTX_SPIN=y (withouth patch)...On Wed, 28 Aug 2019 at 19:10, Maksim Yevmenkin wrote: > > > Hmm... interesting.... > > > > > > I only took a brief look at it. I suppose I can ensure user space address is wired and then copyout() can be called with mutex held > > > > >No, you cannot do this, at least without making the kernel to panic. > > User might unmap the wired mapping at any time still. > > Kostik, > > i was thinking along the lines of vslock/vsunlock and copyout_nofault. > basically similar to the sysctl code. do you think this would not > work? actually, i dont think i need to hold lock over copyout. attached is my version of the patch (untested) thanks, max