From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D40123E3D84; Thu, 19 Mar 2026 15:24:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773933876; cv=none; b=ualyHORgQ5+vqxQ+NsoSnmgzT86aaR6LVI7RMM3AOjX/NamGGAYE8aIxFtB9Pd1oEjF6z9ytNCSkom5Y6r/+2Z/hZ7EUOn/4ZGMDWk28Byo7Wwan/bj1OuYz/o1lAO4j5TBWU69z3c5POBg/uca8uiV7WKOhxl/Qb6nwJI5GU+E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773933876; c=relaxed/simple; bh=BE3MW6vNPVQLiU+P8M5EPT5GuRJwZVTSshCwMY3wHEE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=i0eNKi5KJIfwbwv5xEOhzWTK0+THYPkkqynWwP6Qiqly5+TmPD0P474PoNcDNVX5Pdu6wm47Dz01ixWBNSbMvzVNeujguI2oIio4TWnzx/a2NGcDfg0Ftbfhx50F4pTziWKShr2UjM4Nez+dTHAvLOcsmnEOWLq09v0Flp6HX9w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NhKcwaPV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NhKcwaPV" 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: Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 [...]