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McKenney" Cc: Sergey Senozhatsky , Peter Zijlstra , Thomas Gleixner , Andrew Morton , Steven Rostedt , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [next-20260120] KASAN: maybe wild-memory-access in select_task_rq_fair Message-ID: References: <3e3af3b6-28fe-448f-90f1-4f2ed0c651f4@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3e3af3b6-28fe-448f-90f1-4f2ed0c651f4@paulmck-laptop> X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: DF765140008 X-Stat-Signature: 7pzbsy5ehr3iokd57bdhm4xoeo4nwb88 X-HE-Tag: 1769134252-334570 X-HE-Meta: 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 AeVr0HnW x4Xb70D3JErSoM6S/CE68bM3nT+I8zeoFYhxVVbwclpYReu/xIkf6TZigI0iwpS8EJye0R7WkCg5Se9GiJarXf+Z2WWoRDpKzaYx/7Zhf729xjjprX0tiYls1RMmPUOyhejAgfZuzI7ya93CjIs8rq64sEy+4swQ0ogw6Bgl0+cElh/UKiI5ymcgzEFVaAp1K//WaLtyWcTNpli116zTpzL6wuiLc3fod0qkStlemo0J41wHmYmyGkqjXEauFsIwEWqC+HaBt7OQ0xbojRtik1U5nf5ZCr95T3yNsyGMqVWv4qbbFvGEhCVCvUAYMpgKfozGBliFKsOMDgmZh29mYskK8wAc3LdL3YgnaeKYe0j5BafPR+KvtPEZ/rHLO7GRYi54VpJFtU+LdRJyrHs5LT7obNVjDgQxckgiYW3s4o8KhAV6eAWXz4H4Nlw== 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 (26/01/20 21:11), Paul E. McKenney wrote: > > I'm seeing the following KASAN report on next-20260120 (qemu x86_64). > > There seems to be a lot of stuff going on in the call trace: > > I'll say! > > > [ 1.714941][ T136] ================================================================== > > [ 1.715713][ C0] Oops: general protection fault, probably for non-canonical address 0xeb1125008e9810b0: 0000 [#1] SMP KASAN > > [ 1.715702][ T136] ------------[ cut here ]------------ > > [ 1.716702][ C0] KASAN: maybe wild-memory-access in range [0x5889480474c08580-0x5889480474c08587] > > [ 1.716702][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.19.0-rc6-next-20260120-00004-g7dff00c348a6 #645 PREEMPT > > [ 1.715702][ T136] WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0xb6/0xe0, CPU#2: devtmpf.X/136 Someone beat me to it. next-20260122 boots fine.