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Open Source and information security mailing list archives
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Date: Mon, 2 Dec 2019 15:39:12 -0300 From: Marcelo Ricardo Leitner <marcelo.leitner@...il.com> To: Dmitry Vyukov <dvyukov@...gle.com> Cc: syzbot <syzbot+b2bf2652983d23734c5c@...kaller.appspotmail.com>, David Miller <davem@...emloft.net>, Alexey Kuznetsov <kuznet@....inr.ac.ru>, LKML <linux-kernel@...r.kernel.org>, linux-sctp@...r.kernel.org, Xin Long <lucien.xin@...il.com>, mvohra@...are.com, netdev <netdev@...r.kernel.org>, Neil Horman <nhorman@...driver.com>, syzkaller-bugs <syzkaller-bugs@...glegroups.com>, William Tu <u9012063@...il.com>, Vladislav Yasevich <vyasevich@...il.com>, websitedesignservices4u@...il.com, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org> Subject: Re: kernel BUG at net/core/skbuff.c:LINE! (3) On Sat, Nov 30, 2019 at 04:37:56PM +0100, Dmitry Vyukov wrote: > On Sat, Nov 30, 2019 at 3:50 PM syzbot > <syzbot+b2bf2652983d23734c5c@...kaller.appspotmail.com> wrote: > > > > syzbot has bisected this bug to: > > > > commit 84e54fe0a5eaed696dee4019c396f8396f5a908b > > Author: William Tu <u9012063@...il.com> > > Date: Tue Aug 22 16:40:28 2017 +0000 > > > > gre: introduce native tunnel support for ERSPAN > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=158a2f86e00000 > > start commit: f9f1e414 Merge tag 'for-linus-4.16-rc1-tag' of git://git.k.. > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=178a2f86e00000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=138a2f86e00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=34a80ee1ac29767b > > dashboard link: https://syzkaller.appspot.com/bug?extid=b2bf2652983d23734c5c > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=147bfebd800000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d8d543800000 > > > > Reported-by: syzbot+b2bf2652983d23734c5c@...kaller.appspotmail.com > > Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > Humm... the repro contains syz_emit_ethernet, wonder if it's > remote-triggerable... The call trace is still from the tx path. Packet never left the system in this case.
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