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Mon, 09 Mar 2026 23:48:52 -0700 (PDT) Received: from lima-ubuntu.hz.ali.com ([47.246.98.213]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48541acea11sm52219015e9.7.2026.03.09.23.48.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Mar 2026 23:48:51 -0700 (PDT) From: Qing Wang To: syzbot+4b1bd55fba6260160779@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [kernel?] KMSAN: uninit-value in __flush_smp_call_function_queue Date: Tue, 10 Mar 2026 14:48:45 +0800 Message-Id: <20260310064845.3659772-1-wangqing7171@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <699218f3.050a0220.2757fb.0033.GAE@google.com> References: <699218f3.050a0220.2757fb.0033.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 5aa4c9500018..0aecb4d523cd 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -3492,7 +3492,7 @@ static inline void mas_wr_node_store(struct ma_wr_state *wr_mas, void __rcu **dst_slots; unsigned long *dst_pivots; unsigned char dst_offset, offset_end = wr_mas->offset_end; - struct maple_node reuse, *newnode; + struct maple_node reuse = {0}, *newnode; unsigned char copy_size, node_pivots = mt_pivots[wr_mas->type]; bool in_rcu = mt_in_rcu(mas->tree); unsigned char height = mas_mt_height(mas);