From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 D1A43158D96 for ; Wed, 5 Feb 2025 15:20:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738768806; cv=none; b=t8u/9DmlG+oRn0B4Drhl/EuKNwFIrJdZjTRgFT7dhve4vssJQUjd8gajmllEl/QJkGruHpkXrBL77aRdnb/1N3D8xapCRuesQiDs9gVVrW9CDq33p8lKr2WNYT6Pk1AjxcOs1/jKXxoEwjVpoK3YgSutcgGVOF+z9yNGo+I50ZY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738768806; c=relaxed/simple; bh=hqgYXDY6TzZevCdFyLY7v/npBKaFrlvSormMKn5uUHE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=JUT0kPCcMk3gdWlHErJkWGqLs3rn5vAjVxkGoZsr12HOq+jDhy7GfBaaczSYBQ2zuOCTN/ru8KouUlEbxf+yBo2QWyxdR7w5ytwKHJI62/UDedTXZr9UBuBp6pyYJuJyczDUhOlaiObA8Nfhe1e4FoZwYvF1+syO32WejWUJ/Go= 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=209.85.166.197 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-f197.google.com with SMTP id e9e14a558f8ab-3ce7a0ec1easo50802775ab.0 for ; Wed, 05 Feb 2025 07:20:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1738768804; x=1739373604; 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=IwfpopQ/GSunx7RndpriOuph3YS++0aV3tSQqN0eZjQ=; b=KBHmdI5tqwwl+FLNZEZwDMN1tMceK0l+8dFc9fU62jQ4oBfhkhlAS3eStcgudVwiOM cFcD+OuLxZIFNyP9PxCkCAQOuj+D3k7Bn8Psmry+UCNBoR4greGX09LCdxC5ruwFbiLd ABM5ofJciomsCD0LyBR8KC/W/2uNvUyIm2MApb85gqKSS/d6loYDIQOpqmpNnMuuudqG 9wXupUe7UCWRvmWA3kGAT4s2hi/QQBq3A5T+96aTgyNllfSAnHhuYhBTh1o3OAj7Lmu0 l+flEL6NCRF1+bRWtX6YmCy8+/vFLqH+B4keP9+8dRAviFEdk4uaBWeOL1GvbQmNWVQz CbCA== X-Forwarded-Encrypted: i=1; AJvYcCWD1rBXjLQdi3TUFV934XL1uwTY+TxOWRozDxLpHbSHpA4QHzGi+Y5AjGPe7M9EgpqwTxVU1X4CPHi3jIWkF+k=@vger.kernel.org X-Gm-Message-State: AOJu0YwPg55UZALNGdpfxhdD8GKCh6qjJrk+gMK0b5+0rQ2l7o3GvpUs kmxzlKxnsFLj2WEm/Nl4fQoS02/yPlksDUy7Wc7hgA4gxlritKJeZrzXYTgtGcaplb3IkinDzlj Pu7XRA33AU6+fdlTZ1Ikg6/Zyg240oDrzmmWqEqbDjtorHCrXRhWvZ2s= X-Google-Smtp-Source: AGHT+IEAtMyWhc5FjQBl7fNf+RG9+3+k4csokK468wy3XoMPJxa1oht+TadSAGEbUT8dZoFwHwRU34B/M1moUygTvog7kIyr6KzR Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2188:b0:3cf:b87b:8fd4 with SMTP id e9e14a558f8ab-3d04f8f6fd6mr27900355ab.15.1738768803837; Wed, 05 Feb 2025 07:20:03 -0800 (PST) Date: Wed, 05 Feb 2025 07:20:03 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67a381a3.050a0220.50516.0077.GAE@google.com> Subject: Re: [syzbot] [hardening?] [mm?] BUG: bad usercopy in vfs_readlink From: syzbot To: akpm@linux-foundation.org, brauner@kernel.org, gustavoars@kernel.org, kees@kernel.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mjguzik@gmail.com, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+48a99e426f29859818c0@syzkaller.appspotmail.com Tested-by: syzbot+48a99e426f29859818c0@syzkaller.appspotmail.com Tested on: commit: 5c8c2292 Merge tag 'kthreads-fixes-2025-02-04' of git:.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=108993df980000 kernel config: https://syzkaller.appspot.com/x/.config?x=207eb10d2de1b054 dashboard link: https://syzkaller.appspot.com/bug?extid=48a99e426f29859818c0 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=112ecdf8580000 Note: testing is done by a robot and is best-effort only.