From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CE17D1090242 for ; Thu, 19 Mar 2026 15:24:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 41F606B0508; Thu, 19 Mar 2026 11:24:39 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3CFED6B050A; Thu, 19 Mar 2026 11:24:39 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2E6FF6B050B; Thu, 19 Mar 2026 11:24:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 184276B0508 for ; Thu, 19 Mar 2026 11:24:39 -0400 (EDT) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id AC25A13B4DA for ; Thu, 19 Mar 2026 15:24:38 +0000 (UTC) X-FDA: 84563184636.12.BA9452C Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf20.hostedemail.com (Postfix) with ESMTP id 22E2E1C000C for ; Thu, 19 Mar 2026 15:24:37 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=NhKcwaPV; spf=pass (imf20.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1773933877; 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-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Ih1pYo+IpjXARVuhf/g4/ImOyfOQykdLLpFJ802BmB8=; b=V+UGHwuummLfmYnAje/NObcB2yxeQ+kdm2KTiRL2yyRSzCG8y22RQtIvR4Pg8VXMX1xhJv VdwnT4m89yZqqRcpDrL+dbus0nF0QvkSelwPKUACeBmwhXbdfA8h+2ZoKyJtsQaaM80gJG eELSsyiDsoMJW9iEdvXzOOLyGi2FzEs= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=NhKcwaPV; spf=pass (imf20.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773933877; a=rsa-sha256; cv=none; b=BOIwgR3bHhxQvzm1/l/pQeotTiOQcGJEmYyxX6o7D6hzk3d6pRbRYlewlA2/BlfUkH/JZV 2MAZiqV6KuUEPmqpo7DpNR9WzBVLSraQark8lNjoOOIv7CHK7YVbSsfHAolX934QSgEJyz g3tpcagIO0Fn3M+rAc0LcphKrgyqEYc= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 95E97600AD; Thu, 19 Mar 2026 15:24:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31A8AC19425; Thu, 19 Mar 2026 15:24:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773933876; bh=BE3MW6vNPVQLiU+P8M5EPT5GuRJwZVTSshCwMY3wHEE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NhKcwaPVIMuH6l6y9bnIwW0oOwVmDqe+JufXrEvCIyenFRkw8aci4WNYlazlnqwyt arjNCVPOLJYkFMW/KbH3m6zfIILgWe5gN5THHJ+bCbJ3RH0DOwCugOWDpZUI96iqOk C0kw7RgiPJCRHfcxuHx8oft819fnG2kAZIKxamMMTW+x0kd4WyDaY9CM6D3cGf4ot6 RtfDAEL3R+C3o9FO6nv/jMsde0yFmJb7tGQhDE11SEb2ownvZo2YOp/bpINVLM4yMZ PEI+GSyMCLcnTJ2+3QDuR7/FUAY6V3gf8eosYvKPHQ6G3v9X2M2oNrx6Kn2cs8cKoy L8qj1tfN2mdgA== From: SeongJae Park To: SeongJae Park Cc: Josh Law , Andrew Morton , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/damon/core: document damos_commit_dests() failure semantics Date: Thu, 19 Mar 2026 08:24:33 -0700 Message-ID: <20260319152434.87003-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260319143116.82849-1-sj@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 1ss3tq7by5emi3fd5tzg3hw5h9axfcxk X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: 22E2E1C000C X-HE-Tag: 1773933876-908406 X-HE-Meta: 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 aG0YsPti +pcSYIwuy8eyZWPynoKSUtwZrQ7q/1qaETagwEqGzMDbb94/+F8Z2CRbmUVlrPkKxn1jSjfg1iG+OfxeVjuJfWI9lU2OMYxCz1Rb9QkvigUYrlm2TcQxZ/qVxS1/XUUQgLDlQeRt0DBHwCFjJsxdqv/vYcwJopQqqK+D2XqjncJXvXQHHA0tEYHOqMWng1vM27ma3LbuN6JS+I43viTN5p2MN+PiTR5RzGcR4rs3X5X7amPw8YNj7Q3qnd9mo8X4L7lgH532Ja+mNduXr6GzOvS1p/hu8wS3haVKI4u6+A6SEr32ZjCVO40C9/wsslTeQFItIYDZ0pCZdj9M= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 19 Mar 2026 07:31:14 -0700 SeongJae Park wrote: > Hello Josh, > > On Thu, 19 Mar 2026 07:13:32 +0000 Josh Law wrote: [...] > And Sashiko comment [2]. TL; DR: Good finding. We aware the issue and working > on the fix. Nonetheless, that's out of the scope of this patch. > > : Does leaving dst in a torn-down state cause a NULL pointer dereference in > : the background kdamond thread? [...] > Nice catch. We actually figured out [3] this issue from the discussion on > Josh's previous patch that motivated this one. And I'm working on it. I just posted the patch: https://lore.kernel.org/20260319145218.86197-1-sj@kernel.org Thanks, SJ [...]