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Sat, 22 Aug 2020 00:31:10 -0700 (PDT) Date: Sat, 22 Aug 2020 00:31:10 -0700 In-Reply-To: <000000000000e8f42805ad5d136c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005d511305ad725632@google.com> Subject: Re: KASAN: use-after-free Write in vcs_read From: syzbot To: akpm@linux-foundation.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, jslaby@suse.com, jslaby@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nico@fluxnic.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4BEC437606 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.398414, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: syzbot has bisected this issue to: commit b1c32fcfadf5593ab7a63261cc8a5747c36e627e Author: Jiri Slaby Date: Tue Aug 18 08:57:05 2020 +0000 vc_screen: extract vcs_read_buf_header bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13259dee900000 start commit: 494d311a Add linux-next specific files for 20200821 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=10a59dee900000 console output: https://syzkaller.appspot.com/x/log.txt?x=17259dee900000 kernel config: https://syzkaller.appspot.com/x/.config?x=a61d44f28687f508 dashboard link: https://syzkaller.appspot.com/bug?extid=ad1f53726c3bd11180cb syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16704b7e900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1588a046900000 Reported-by: syzbot+ad1f53726c3bd11180cb@syzkaller.appspotmail.com Fixes: b1c32fcfadf5 ("vc_screen: extract vcs_read_buf_header") For information about bisection process see: https://goo.gl/tpsmEJ#bisection