From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 950361AF0A0; Mon, 4 Nov 2024 11:47:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730720868; cv=none; b=UIeQU4ayn5w1xCRl4y8Rsra0uNQ/YpjRFA7VYeMWEtxcF6okjGOUoclUSxoKgBqx4ZB6EgnDfBZVfT96cA8NAdu1dTja1FCAVcrdmfOX976fhFecUHC7lAri1owzNM5JJ1/j6otzL66Z/D71uBQTQl2s7OoNsQMNbdWXMeEuKvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730720868; c=relaxed/simple; bh=psPIY7Sng851pKS/3767nhrEFkWBcdFak70DiKUQAaw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hchIjp76GMCyJmYpRxM1UPdp/a5JNGWILTUwskDOWBlgoVSudNSztau4OQ1v83TfrpRqXndMdsNhEOzFdQE3jQK9czywxqwdq0tUCS1Ox6Iq9A3H9i+ivmJtGz5yFkgEbNKZd5cHSHNv1uK0xF6Q55+kgtY0KltZk0miqzAa5sI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=eX6aRPOy; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="eX6aRPOy" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=xA1XZPA7ROpkAWO42tjuiUPyY5dJ4CkrP0Yv74uKLYE=; b=eX6aRPOyNRtCJ8XY4us2x8FSBC fJZCOC+0l8fNsbvxB3DAkntZ5h0qHqfI8Qr47zKwMMhwzCOwARnKGtyVYHyJZvvX/YsmquFfisqYw h9VWHztKViX9J7KJYjSM9qTuXbLyHXk+u5DN53x0uhMhydwM2pIMjG6w06iiNuz+9emYKT+MO3JFq 0wnHlEc7JnbTU3YJsax6FxzyJxFpm2sf5XSnJsW/YgshQRTQRBDGzTK67rf7KoOeKALEG1ryudurQ JYrFo0+/BDVsuP8P0chDrEgDC+0NEMHnZ608/J5ma0YHZ2nO9qXRmdjvoZBJjiOIX2m2Zos+kqWnC IsLDgQ1A==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1t7vYM-0000000BJRc-2PoW; Mon, 04 Nov 2024 11:47:26 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 3837C300324; Mon, 4 Nov 2024 12:47:26 +0100 (CET) Date: Mon, 4 Nov 2024 12:47:26 +0100 From: Peter Zijlstra To: Vlastimil Babka Cc: syzbot , Liam.Howlett@oracle.com, akpm@linux-foundation.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, syzkaller-bugs@googlegroups.com, Sebastian Andrzej Siewior , Marco Elver , Andrey Konovalov , kasan-dev , Andrey Ryabinin , Alexander Potapenko , Waiman Long , dvyukov@google.com, vincenzo.frascino@arm.com, paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joel@joelfernandes.org, josh@joshtriplett.org, boqun.feng@gmail.com, urezki@gmail.com, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang1211@gmail.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, tj@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, rcu@vger.kernel.org Subject: Re: [syzbot] [mm?] WARNING: locking bug in __rmqueue_pcplist Message-ID: <20241104114726.GD24862@noisy.programming.kicks-ass.net> References: <67275485.050a0220.3c8d68.0a37.GAE@google.com> <20241104114506.GC24862@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241104114506.GC24862@noisy.programming.kicks-ass.net> On Mon, Nov 04, 2024 at 12:45:06PM +0100, Peter Zijlstra wrote: > diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c > index 6310a180278b..ac9f6682bb2f 100644 > --- a/mm/kasan/generic.c > +++ b/mm/kasan/generic.c > @@ -521,12 +521,12 @@ size_t kasan_metadata_size(struct kmem_cache *cache, bool in_object) > sizeof(struct kasan_free_meta) : 0); > } > > -static void __kasan_record_aux_stack(void *addr, depot_flags_t depot_flags) > +void kasan_record_aux_stack(void *addr) > { > struct slab *slab = kasan_addr_to_slab(addr); > struct kmem_cache *cache; > struct kasan_alloc_meta *alloc_meta; > - void *object; > + void *object Clearly I'm still struggling to type ... *sigh*