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Sun, 31 Aug 2025 15:40:01 +0000 (UTC) Date: Sun, 31 Aug 2025 17:39:41 +0200 From: Borislav Petkov To: Bert Karwatzki Cc: seanjc@google.com, Sebastian Andrzej Siewior , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev, Andrew Morton , linux-mm@kvack.org, Jakub Kicinski , Peter Zijlstra , torvalds@linux-foundation.org, x86@kernel.org, tglx@linutronix.de Subject: Re: (Re)boot hangs and refcount errors on next-20250829 Message-ID: <20250831153941.GCaLRsvf1V_ST2GPAd@fat_crate.local> References: <20250831141426.2786-1-spasswolf@web.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20250831141426.2786-1-spasswolf@web.de> X-Rspamd-Queue-Id: B8C72100007 X-Stat-Signature: j6nc8ithueg86qsy7xfdcw6wjeuwi5zc X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1756654821-935311 X-HE-Meta: U2FsdGVkX1+7VbOCbzTajnpgjtzdeZ0jlCOGHV4BYipmvGJmUTwd1K7qJ/CIYqVSOZG5AEcdHJalo1X40MHFyG3vDtk+pyV/xYkp6zL+Bojiu1An7Xp4KzkEnWqBr86QqKVNOY9g54Nq0mOtNehgy3GnukwJk806ulpON/Sy2XVHAjBH9oDWUgo/e00EgIvJ0P3+hhijTqs9YQQmIN0HSF+sJ2rsb6Ww2bZfBgcDsXuIlNdSnfLWxNN5PLL3T1jhiDyY3EnovqaX5FcYq1DkvDgXwdF6FICqhHFsdL56xufzEARFx7N/0Ag+AUHvET7DdDDs4nnv+qOlD7mURAQy8BCbJx+upx3b6eLBgcmUT10dpFVkxI16ZfYKsQw+IbnKJbKqXW7xBKY3VuHQe6aWEZTQWSjKqFFtkBrUUSzQExk7t/+oPauUk3Qt7zcZnEwKdOiLKquTUE8dW2Ke8HOxu1AOlZGX5BDYv7/Oaet1dQWzzyGrKQ0fXEbn08Gf1mMFoq5W/NFeA7mph9HkPTxSYNmWNSeeIC6FSksOIB6K6NXcKOl/bFi6WIha+UGoJgskFLEzXJCNiRk6JromMamINdea5nPOdGU01fbcwOnF0nCqzp6B4CV09BhZHFDsvzprfzVVifOPESW0RFW1Ruc2fjMqfE4TE7bojOd4aW2bjjyDQT7SQvWKAU7ocML0tLLz/be89LjaSMAbta+nE0lN09UFhPO8Dq67mDptAFkS9UyUG9Ot6JYxYUB3Jzmbl4120PGAn7X0AWS2R36++eIW8Z2UHkCV/+oZa9o19EhRu3we0rf8SY/1a7fbeQMrvSZJAuAIyHOMIema2qnHHnhRfACw1MUjUnWjFX6M/CNprWTfmIv29RHiuAX2isnCNlZMPbBAG4W5IEWasRynqY55+eK9KT+kd+wy8qBrN2C3hZ87qQZDkLRGcsljj3KPrlOWwQoyoeNx3ZxdCOLI29w Ffce31Ga wEu5EnKhQX0pjSBhL1cpRFRQPRezRsevDeS546WlHZE4Srp8M4jDcbkeQ/Hhd3pKAT/KwpUvJGTw0HPQpyQ09VvG/kizn6q6SVQalVTy/givdqYLOiUC9F8E1ZtN8uR+7moRFMNnUZRX7RRW3afU4KwpSNucGR2uWirpe1B/PFNOwMr823iIW4+aV3f81LrIvvVJXiGRBYk2sjfIYqBHFR5dODKtePgdSsYdkiRvgqG+cmLI= 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: List-Subscribe: List-Unsubscribe: On Sun, Aug 31, 2025 at 04:14:24PM +0200, Bert Karwatzki wrote: > I think I hit the the same error (and some more ...) when booting next-20250829 > on my amd64 laptop (no VMs and no kexec were used here): > > When I try booting next-20250829 on my debian stable(trixie) amd64 system the boot > process hangs every few attempts (without any log messages recorded). When the > boot process succeeds the following error message appears in dmesg: > > [ 8.337248] [ T44] ------------[ cut here ]------------ > [ 8.337250] [ T44] WARNING: kernel/futex/core.c:1604 at futex_ref_rcu+0xe8/0x100, CPU#6: rcuc/6/44 I believe that got fixed, pls try: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=locking/urgent which got updated to contain the fix for the warning above. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette