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h=Received:Date:From:To:Cc:Subject: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID; bh=IJW2c0Rxs/6iJSqkH1wrdTI0L1JryyoJLM5/DF3caKY=; b=bKHgVYuHIk8yr Lwr16266ZXpIxuFtoMCwX3nBNb2v/247VS7YL/7CYabOsQ5gITAzUyito0tZpPQu yUYm0MMGG+Vy2N+S6blAGpS/CQUpYy9fMYDmQeedyX/Vk+vfxl2QeUgykY/h4rnA e2d8SkWOPmijDkIET579SCxdPNJFls= Received: from 23009200614$stu.xidian.edu.cn ( [113.200.174.102] ) by ajax-webmail-hzbj-edu-front-4.icoremail.net (Coremail) ; Wed, 7 Jan 2026 13:52:11 +0800 (GMT+08:00) Date: Wed, 7 Jan 2026 13:52:11 +0800 (GMT+08:00) X-CM-HeaderCharset: UTF-8 From: =?UTF-8?B?546L5b+X?= <23009200614@stu.xidian.edu.cn> To: linux-kernel@vger.kernel.org Cc: rcu@vger.kernel.org, linux-mm@kvack.org, dri-devel@lists.freedesktop.org, x86@kernel.org, paulmck@kernel.org, tglx@linutronix.de, peterz@infradead.org, akpm@linux-foundation.org, syzkaller-bugs@googlegroups.com Subject: [BUG] rcu: stall detected in sys_mmap with PREEMPT(full) involving timer softirq and DRM vblank disable 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