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Message-ID: <0000000000004a34a305fac69bcb@google.com> Date: Wed, 03 May 2023 02:23:19 -0700 From: syzbot <syzbot+48011b86c8ea329af1b9@...kaller.appspotmail.com> To: akpm@...ux-foundation.org, hch@....de, jack@...e.com, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [mm?] [udf?] KASAN: null-ptr-deref Read in filemap_fault syzbot has bisected this issue to: commit 66dabbb65d673aef40dd17bf62c042be8f6d4a4b Author: Christoph Hellwig <hch@....de> Date: Tue Mar 7 14:34:10 2023 +0000 mm: return an ERR_PTR from __filemap_get_folio bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15220608280000 start commit: 865fdb08197e Merge tag 'input-for-v6.4-rc0' of git://git.k.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=17220608280000 console output: https://syzkaller.appspot.com/x/log.txt?x=13220608280000 kernel config: https://syzkaller.appspot.com/x/.config?x=d1c8518c09009bad dashboard link: https://syzkaller.appspot.com/bug?extid=48011b86c8ea329af1b9 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137594c4280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10cfd602280000 Reported-by: syzbot+48011b86c8ea329af1b9@...kaller.appspotmail.com Fixes: 66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio") For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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