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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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241104114506.GC24862@noisy.programming.kicks-ass.net> X-Rspamd-Server: rspam10 X-Stat-Signature: s7zar6e9s4ptfg6kzmddi4p9g8qczbie X-Rspamd-Queue-Id: 047901C000F X-Rspam-User: X-HE-Tag: 1730720796-781334 X-HE-Meta: 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 uyqx714v VRcc54Y6PiahIV41TEoXfTbXfI4jpD8alvNUNo1RBFZ4E+eGjV3Xx+y2pjDdt08YXwWLwgOOHyN2Wjasc7g5oO+qoxDNmfMKWLdTgzeztIxG4bEjuUZSBh0jL+QZeptILyohscwO9T9I4hu3emP7QNlc2YCNs8xjK88ogvwrbGFTpUwv0hzNZF2V0uQDK+AlK5OgNd2Wt1f4XwkGj/zuhMOifrRTNlrWgC+6Qjm0xKAu5r7ZlhbZ7AGAShvQYyn72eu9XwD5GJ4D+oZojNZN+HKboNtwpd5APRHR2uD/SAlRUuMcgCNPh5dmmNOVAzIK2aJ8CTFXajOFHb/QTCOzz+auaYulHTBcQ5JoiVuXqH7BPfQXdIG4uao37MupTQ3vXeZ4g 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 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*