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Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uE5Sg-00000008wZx-0E5P; Sun, 11 May 2025 12:07:18 +0000 Date: Sun, 11 May 2025 13:07:17 +0100 From: Matthew Wilcox To: Yin Guoyu Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: Kernel panic - not syncing: System is deadlocked on memory Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 26B2E180012 X-Stat-Signature: ojq9nk1gipp6pyga9ny9jc3m4o9ypqb3 X-HE-Tag: 1746965240-211190 X-HE-Meta: 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 2IuqSfkH qkUXN1+Pn7Ya6GjT4dzVnv5PWkxZ+O79RyL+IsqBnDMf0RjqTtUgZPgImZ5/rTjkj8HQGLFyNyXXKfgEasjBd0tVvf2RHMkLw/+HLyrTt0fJHWuEroykOShp1hy3PHQagoJR0JoUzpo1oauBqFOffeh2DHh/tvt/1TIgALf/DMMsfZZigCWFr5u3coaIvsnAskHzRZrx+KsszoYnIAHIf6Paur9uA8S+W2xgc 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, May 11, 2025 at 07:35:14PM +0800, Yin Guoyu wrote: > Hi, > When I test the Linux kernel (commit > 38fec10eb60d687e30c8c6b5420d86e8149f7557), I encountered a kernel > panic issue related to memory allocation, specifically in the > alloc_pages_mpol function. The panic message indicates "System is > deadlocked on memory," and the call trace points to > __alloc_frozen_pages_noprof failing to allocate pages, leading to an > OOM condition. congratulations, you ran syzkaller as root and got the system to crash. come back when you've learned something.