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Thu, 11 Dec 2025 10:24:36 -0800 (PST) From: Askar Safin To: mpatocka@redhat.com Cc: adrelanos@whonix.org, arraybolt3@gmail.com, cryptsetup@lists.linux.dev, dm-devel@lists.linux.dev, gmazyland@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: Hard system lock-ups when using encrypted swap and RAM is exhausted Date: Thu, 11 Dec 2025 21:24:29 +0300 Message-ID: <20251211182429.3300562-1-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <3f3d871a-6a86-354f-f83d-a871793a4a47@redhat.com> References: <3f3d871a-6a86-354f-f83d-a871793a4a47@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Mikulas Patocka : > So, this is what happened to you - the machine runs out of memory, it > needs to swap out some pages, dm-crypt encrypts the pages and generates > write bios, the write bios are directed to the loop device, the loop > device directs them to the filesystem, the filesystem attempts to allocate > more memory => deadlock. Does similar thing happen in my case? I. e. swap on top of dm-integrity on top of partition? Is my use case supported? (I'm not talking about hibernation now, just about swap.) -- Askar Safin