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Wed, 23 Jun 2021 09:19:36 -0700 (PDT) Received: from localhost.localdomain ([94.103.225.155]) by smtp.gmail.com with ESMTPSA id h24sm42632lfp.60.2021.06.23.09.19.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Jun 2021 09:19:35 -0700 (PDT) Date: Wed, 23 Jun 2021 19:19:28 +0300 From: Pavel Skripkin To: syzbot Cc: akpm@linux-foundation.org, coreteam@netfilter.org, davem@davemloft.net, dsahern@kernel.org, fw@strlen.de, kadlec@netfilter.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Subject: Re: [syzbot] WARNING: zero-size vmalloc in corrupted Message-ID: <20210623191928.69d279d1@gmail.com> In-Reply-To: <000000000000aa23a205c56b587d@google.com> References: <000000000000aa23a205c56b587d@google.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="MP_/WS2tHtsc/ybjuavLYXEFySg" Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=M86HOfXU; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf21.hostedemail.com: domain of paskripkin@gmail.com designates 209.85.167.45 as permitted sender) smtp.mailfrom=paskripkin@gmail.com X-Stat-Signature: aqgynyheowmsd5m4zosnnj45qaab4u7f X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 130ADE0004F9 X-HE-Tag: 1624465177-492866 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: --MP_/WS2tHtsc/ybjuavLYXEFySg Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline On Wed, 23 Jun 2021 02:15:23 -0700 syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 13311e74 Linux 5.13-rc7 > git tree: upstream > console output: > https://syzkaller.appspot.com/x/log.txt?x=15d01e58300000 kernel > config: https://syzkaller.appspot.com/x/.config?x=42ecca11b759d96c > dashboard link: > https://syzkaller.appspot.com/bug?extid=c2f6f09fe907a838effb syz > repro: > https://syzkaller.appspot.com/x/repro.syz?x=14bb89e8300000 C > reproducer: https://syzkaller.appspot.com/x/repro.c?x=17cc51b8300000 > > The issue was bisected to: > > commit f9006acc8dfe59e25aa75729728ac57a8d84fc32 > Author: Florian Westphal > Date: Wed Apr 21 07:51:08 2021 +0000 > > netfilter: arp_tables: pass table pointer via nf_hook_ops > > bisection log: > https://syzkaller.appspot.com/x/bisect.txt?x=13b88400300000 final > oops: https://syzkaller.appspot.com/x/report.txt?x=10788400300000 > console output: > https://syzkaller.appspot.com/x/log.txt?x=17b88400300000 > This one is similar to previous zero-size vmalloc, I guess :) #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master With regards, Pavel Skripkin --MP_/WS2tHtsc/ybjuavLYXEFySg Content-Type: text/x-patch Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=0001-media-dvb-usb-fix-wrong-definition.patch >From b1ed745713bb840e0778c5a13f1f83f535dca044 Mon Sep 17 00:00:00 2001 From: Pavel Skripkin Date: Wed, 23 Jun 2021 19:18:09 +0300 Subject: [PATCH] media: dvb-usb: fix wrong definition /* ..... */ Signed-off-by: Pavel Skripkin --- drivers/media/usb/dvb-usb/cxusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c index 761992ad05e2..7707de7bae7c 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -1947,7 +1947,7 @@ static struct dvb_usb_device_properties cxusb_bluebird_lgz201_properties = { .size_of_priv = sizeof(struct cxusb_state), - .num_adapters = 2, + .num_adapters = 1, .adapter = { { .num_frontends = 1, -- 2.32.0 --MP_/WS2tHtsc/ybjuavLYXEFySg--