From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: Re: WARNING: bad usercopy in fanotify_read Date: Sat, 16 Mar 2019 07:49:01 -0700 Message-ID: <0000000000008f302105843741ad@google.com> References: <00000000000016f7d40583d79bd9@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Return-path: In-Reply-To: <00000000000016f7d40583d79bd9@google.com> Sender: linux-kernel-owner@vger.kernel.org To: akpm@linux-foundation.org, amir73il@gmail.com, cai@lca.pw, crecklin@redhat.com, jack@suse.cz, keescook@chromium.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com List-Id: linux-api@vger.kernel.org syzbot has bisected this bug to: commit a8b13aa20afb69161b5123b4f1acc7ea0a03d360 Author: Amir Goldstein Date: Thu Jan 10 17:04:36 2019 +0000 fanotify: enable FAN_REPORT_FID init flag bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11e78d6f200000 start commit: a8b13aa2 fanotify: enable FAN_REPORT_FID init flag git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=13e78d6f200000 console output: https://syzkaller.appspot.com/x/log.txt?x=15e78d6f200000 kernel config: https://syzkaller.appspot.com/x/.config?x=e9d91b7192a5e96e dashboard link: https://syzkaller.appspot.com/bug?extid=2c49971e251e36216d1f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1287516f200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ee410b200000 Reported-by: syzbot+2c49971e251e36216d1f@syzkaller.appspotmail.com Fixes: a8b13aa2 ("fanotify: enable FAN_REPORT_FID init flag")