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Thu, 19 Oct 2023 20:21:32 -0400 X-MC-Unique: bzvGtZerN-G9XP76KmwirQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 33D3E87A9FD; Fri, 20 Oct 2023 00:21:31 +0000 (UTC) Received: from localhost (unknown [10.72.112.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4AC74111D794; Fri, 20 Oct 2023 00:21:29 +0000 (UTC) Date: Fri, 20 Oct 2023 08:21:26 +0800 From: Baoquan He To: Andrew Morton Cc: Dan Carpenter , Philip Li , oe-kbuild@lists.linux.dev, Lorenzo Stoakes , lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Linux Memory Management List Subject: Re: mm/vmalloc.c:3689 vread_iter() error: we previously assumed 'vm' could be null (see line 3667) Message-ID: References: <89caf59a-d3b9-409d-b1ae-9e370cb9ee7d@kadam.mountain> <20231018085248.6f3f36101cbdfe0990c8b467@linux-foundation.org> <20231019095030.7a1f3c93bc18511f52524aa8@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231019095030.7a1f3c93bc18511f52524aa8@linux-foundation.org> X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 X-Rspamd-Queue-Id: 867C11A0007 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: zsy5antnzkygp7bn7onry48jtkhwxopj X-HE-Tag: 1697761296-514743 X-HE-Meta: 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 T2UQnWup mE+yueCP1rXxG6e48G9FJNpBcNuvD+T7uRXigSy5pL+c+b6VLXj5G2ZqEApXWbNwSWEyJZFdgLF8GBy5Zey8PZpcVip5ReozN58Ol/vFuC2B0GtvL4k6q4AeyQVdjAcx3PbtgopkiDKKiHLrYzGubWOMLIFheWEdaqXoVzhb9Qm35OCoyzDwLM9lgqvKyz9h2vjD88ooAFuNGCkC9e+2J308zV1X3zfy0jM+R+IFMiqimwBWiwgP+u/OZRuMoCzWEoSwy1xEXIFXVwMQ= 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 10/19/23 at 09:50am, Andrew Morton wrote: > On Thu, 19 Oct 2023 10:28:21 +0800 Baoquan He wrote: > > > I think this is not a real runtime bug. The only chance it can hapen is > > when (flags == VMAP_BLOCK) is true. That has been warned and could never > > happen. I updated patch log and paste v2 here. > > Thanks, I updated the changelog in-place. Thanks, Andrew.