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Fri, 19 Apr 2024 06:03:16 -0700 (PDT) Received: from kernelexploit-virtual-machine.localdomain ([121.185.186.233]) by smtp.gmail.com with ESMTPSA id z17-20020a17090a541100b002a2979a8651sm3074774pjh.54.2024.04.19.06.03.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 06:03:16 -0700 (PDT) From: Jeongjun Park To: syzbot+a81f2759d022496b40ab@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get_node (3) Date: Fri, 19 Apr 2024 22:03:12 +0900 Message-Id: <20240419130312.11392-1-aha310510@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <0000000000004a86bf0616571fc7@google.com> References: <0000000000004a86bf0616571fc7@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 please test uninit-value in hsr_get_node #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- net/core/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/sock.c b/net/core/sock.c index 0963689a5950..847233e8f3e6 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2920,7 +2920,7 @@ bool skb_page_frag_refill(unsigned int sz, struct page_frag *pfrag, gfp_t gfp) /* Avoid direct reclaim but allow kswapd to wake */ pfrag->page = alloc_pages((gfp & ~__GFP_DIRECT_RECLAIM) | __GFP_COMP | __GFP_NOWARN | - __GFP_NORETRY, + __GFP_NORETRY | __GFP_ZERO, SKB_FRAG_PAGE_ORDER); if (likely(pfrag->page)) { pfrag->size = PAGE_SIZE << SKB_FRAG_PAGE_ORDER; -- 2.34.1