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Thu, 19 Mar 2026 16:26:44 +0100 (CET) Date: Thu, 19 Mar 2026 15:26:41 +0000 From: Josh Law To: SeongJae Park CC: Andrew Morton , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: =?US-ASCII?Q?Re=3A_=5BPATCH=5D_mm/damon/core=3A_document_d?= =?US-ASCII?Q?amos=5Fcommit=5Fdests=28=29_failure_semantics?= User-Agent: Thunderbird for Android In-Reply-To: <20260319152434.87003-1-sj@kernel.org> References: <20260319152434.87003-1-sj@kernel.org> Message-ID: <490DD03E-C66A-40FD-8008-C846350252BF@objecting.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External X-Stat-Signature: x3d8uwpkxsdtkiaiuj7ejs5x875py4zb X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: D39DA18000B X-HE-Tag: 1773934019-9555 X-HE-Meta: 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 IoI0Jqp0 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 19 March 2026 15:24:33 GMT, SeongJae Park wrote: >On Thu, 19 Mar 2026 07:31:14 -0700 SeongJae Park wrote: > >> Hello Josh, >>=20 >> On Thu, 19 Mar 2026 07:13:32 +0000 Josh Law = wrote: >[=2E=2E=2E]=20 >> And Sashiko comment [2]=2E TL; DR: Good finding=2E We aware the issue= and working >> on the fix=2E Nonetheless, that's out of the scope of this patch=2E >>=20 >> : Does leaving dst in a torn-down state cause a NULL pointer dereferenc= e in >> : the background kdamond thread? >[=2E=2E=2E] >> Nice catch=2E We actually figured out [3] this issue from the discussi= on on >> Josh's previous patch that motivated this one=2E And I'm working on it= =2E > >I just posted the patch: >https://lore=2Ekernel=2Eorg/20260319145218=2E86197-1-sj@kernel=2Eorg > > >Thanks, >SJ > >[=2E=2E=2E] Hello, this morning i found some big bugs in sysfs=2Ec, ill post the patch= e(s) soon