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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id m9-20020a056870a40900b0011f390fdb0asm5883375oal.12.2022.09.24.00.29.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Sep 2022 00:29:11 -0700 (PDT) Date: Sat, 24 Sep 2022 00:28:52 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.attlocal.net To: Nathan Chancellor cc: Hugh Dickins , Mike Kravetz , Peter Xu , Axel Rasmussen , Yang Shi , Matthew Wilcox , syzbot , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, ndesaulniers@google.com, songmuchun@bytedance.com, syzkaller-bugs@googlegroups.com, trix@redhat.com Subject: Re: [syzbot] general protection fault in PageHeadHuge In-Reply-To: Message-ID: References: <0000000000006c300705e95a59db@google.com> <7693a84-bdc2-27b5-2695-d0fe8566571f@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1664004552; a=rsa-sha256; cv=none; b=L3618BbTKgG+FMKNekX6F/5f6GEzhuQdyNdB4tV98uvORYDZVJm/aKmjpLX/+zue0Yz2DJ I+iLwxp/yLkjJQaTm/mdhzzSBVyx/CtCiKl3yIf1UZpH7v+KoTaGy+PcZShEew7a36Rixy gJy1JCS+4CyT2Gx/8XoH4+CtvDWb97Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664004552; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=ZsVr0q7yabDdKFmE4b0RvYJDpC4ReAh7J6+IaRkZIac=; b=Nt0LQlEJrtejG2ilj4P7qvAufiIstIf8SJXiYLaeJIb4za9VsH+JRTaKHmgeYAUy3vbLNq DPpnEaAZ6S9YaBqhsnFuKCpZoYstJDILPcxr+A1TQoZrf2OQ0ja6wfPPKU665Y5wghAdwP QybZpbmt/WUhhFAPDx6GbTvpz43rtx4= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=MgP3Bi14; spf=pass (imf17.hostedemail.com: domain of hughd@google.com designates 209.85.210.43 as permitted sender) smtp.mailfrom=hughd@google.com; dmarc=pass (policy=reject) header.from=google.com X-Stat-Signature: aujbsngn4sctms8yequxrjehnacjw9ib X-Rspamd-Queue-Id: DBD704001E Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=MgP3Bi14; spf=pass (imf17.hostedemail.com: domain of hughd@google.com designates 209.85.210.43 as permitted sender) smtp.mailfrom=hughd@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1664004552-877386 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 23 Sep 2022, Nathan Chancellor wrote: > On Fri, Sep 23, 2022 at 05:14:38PM -0700, Hugh Dickins wrote: > > > > But me, I cannot even get the latest linux-next to boot: next job. > > Maybe I can save you a bisect: > > https://lore.kernel.org/all/Yy4GoMMwiBaq3oJf@dev-arch.thelio-3990X/ Many thanks Nathan, yes, you did save me a bisect with that link. And I managed to get a patch to revert the badness, I'll reply there on that thread now. Hugh