From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EDD36155A59 for ; Fri, 29 Nov 2024 07:00:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732863605; cv=none; b=jKUQ9sicJuZMlrj+42P267Gqw3He8J3jxBbotvl/l39Z3roDgF/2dyqsWGf1NiKua3ESafMjym7xN1GSj3lR7+ToiTA9I7EbLMttAZPMt3fR+7bmubp/tRsLHwpUWAvC3txbhphXcHPZisDQZ3T1lCLMummqnOP26deHvNp9Auk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732863605; c=relaxed/simple; bh=OTnsXcTFOSk4pX6ATOXr/FBbB1ZGPiO0Bg7kRdMMFOk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=SajYO9hBLWRrpTN/pHDXtqEDk/AVreJLBM9pRFxtYZ1EMWUdaq0zu5AqWQmce7BzS4o8tjTkFBztDKvWrGmhccEQpKK4Vi4XCa/nqJfx8/L3fiyC8Gwt8s161wWsezb1xc34+3bxH7/mgNiICUqJzEZplLxFgWOci830HSGuoEI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-3a787d32003so14926285ab.0 for ; Thu, 28 Nov 2024 23:00:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732863603; x=1733468403; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=/uFra0YN+yna+dFAYGRTHBlUgOuZ/rd2jDdrEmkswmo=; b=k7/Z1ePHdrxuojUAEcTqLqD6OWDZo3xPvPoqNCUSISV5XI2XbJ1MTcr965OdJSQxit oM3oy491h0nHE4GwTuQTTNb/tEn34QWFU4IQ34P+5SZpFKf3pGrEqePZLyH8HvLh2fv0 s8Lqej0ZtaikOqP6RJss3LAAFafKLQOs6Fm2JW4OYuzCqWbdQBCB0DzWNLOHyL3Ny/w+ tNzkakNirX4vEHTF8WLhkCXFm+DWI87+6u2D2YTTEHdMOWpNF54Eldanvo9lekBFKUmT l0iDiMgCsX3KT9/ShhAbp0rBVSIvm3YCThgejhkDWjHzQGnAUe9E6Y0y8I1IF4ydRrP7 a/eQ== X-Forwarded-Encrypted: i=1; AJvYcCX+M3YzaOvbt2WgbOwYVIMYALXTnTya1xI4phhkaVWVDDJTSt/R0jmK3MU2CAAIBW0VlKyBiC3DC2mMD80=@vger.kernel.org X-Gm-Message-State: AOJu0Yy76p8WIpnsdc63BPrl3DD4pUW1DHxYVKsRhkX4uv7nIl1+Hlt5 UsDkyzM9IRQ/Z4FiFCmM27+UaqQbvYnyExLEZpq+8gUmUq7KWC2sIWEvCR5MIG4bTVQbosV7Ebv ATlEEm8nAThXeucdRuldFoTUGuD0urwmXKIIM0Ku/g1PZ+7NPkM/+Bp0= X-Google-Smtp-Source: AGHT+IFdiUwM6usNyDCkLi/if2XisD6w3B0PUJMgYfQwjzXBmtMFTye+l/jlLwYTFAMwLA9+B7LxNQeBaYvKgU653zSV2doKUl21 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1b05:b0:3a7:8270:4050 with SMTP id e9e14a558f8ab-3a7c55d49dcmr113095305ab.18.1732863603171; Thu, 28 Nov 2024 23:00:03 -0800 (PST) Date: Thu, 28 Nov 2024 23:00:03 -0800 In-Reply-To: <67475f25.050a0220.253251.005b.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67496673.050a0220.253251.00a4.GAE@google.com> Subject: Re: [syzbot] [fuse?] KASAN: null-ptr-deref Read in fuse_copy_do From: syzbot To: joannelkoong@gmail.com, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 3b97c3652d9128ab7f8c9b8adec6108611fdb153 Author: Joanne Koong Date: Thu Oct 24 17:18:08 2024 +0000 fuse: convert direct io to use folios bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1648df5f980000 start commit: 445d9f05fa14 Merge tag 'nfsd-6.13' of git://git.kernel.org.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1548df5f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=1148df5f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3c44a32edb32752c dashboard link: https://syzkaller.appspot.com/bug?extid=87b8e6ed25dbc41759f7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11fd43c0580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15cf2f5f980000 Reported-by: syzbot+87b8e6ed25dbc41759f7@syzkaller.appspotmail.com Fixes: 3b97c3652d91 ("fuse: convert direct io to use folios") For information about bisection process see: https://goo.gl/tpsmEJ#bisection