From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5424153378 for ; Tue, 19 Mar 2024 06:22:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710829363; cv=none; b=TWYlvWqYRJRQqHDDmp6Y66bD954qgHCkKA+mj4lZ5Kqs6Rz8e5U5ddQ5D3ual3jVo6N4GrTkqZI+heg1tS07Y7h3RyLKWtQNv2UyBP2rDw2cabWemo8cwgExPiAWh3vpzDmi+sx2oeCEFZSiCQ8g+YbY8QQJL1Ajd5JlUmi/+PU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710829363; c=relaxed/simple; bh=Bl7MIJyB//o01ewlBZlUgO4wFPfhjKb6CVzGD67KLvs=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=GFOhVfbLCg/rB4Y9D3H6bQgczt7WpaaGprvxl+/b8yeDJv6vHsahzqsQB1YLzp/IXfwNf0LEIhchAcA/H0p0GxGhlN1nbTJ1IcMvwiop24W7jfd7FqJvt+8plQDjeYqcF4p+ewKmCIsQEi1WHxH57hF6CeG5ikXrXa63Pm97F8I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g2VVEZhJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="g2VVEZhJ" Received: by smtp.kernel.org (Postfix) with ESMTPS id D4779C433C7 for ; Tue, 19 Mar 2024 06:22:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710829362; bh=Bl7MIJyB//o01ewlBZlUgO4wFPfhjKb6CVzGD67KLvs=; h=From:To:Subject:Date:In-Reply-To:References:From; b=g2VVEZhJo7M3WzBIFYBrPLfykMKnEb0DDgwBjDWgEycofr6FETfu1s1MJtsWZAG4y EBQ/Wz/VV1bfchdnEJOJTmGCmIXVWDKeCbyJ1Lzyv9+fgY79ex3ui3W4eMSObZIiWo zneTMo0h/jXCvq0t7DD2rh0wi6KmH0iCCE3uzxkxuzeSxvpftr8/m4jW2ATjrYIGP/ jGfgxKSOo2CTJmPSBfP1bNhfmrtzdSKfkoUGK3sBOhf3YBHmAw8HtjHA/gBYYz+ONO KujYgGYCsYvj41b8/VwGqk3vcUDnp4+Zkja8gZk/maoA4pbKO/il0rPIctFKKZyas0 SD+AJnSuZ3hhw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id BBCD4C53BD4; Tue, 19 Mar 2024 06:22:42 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 218601] Regression - dd if=/dev/zero of=/zero causes shift-out-of-bounds && NULL pointer dereference, address: 0000000000000003 Date: Tue, 19 Mar 2024 06:22:42 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: colin.kernel@i-pentest.info X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D218601 --- Comment #6 from Colin (colin.kernel@i-pentest.info) --- Firstly, apologies for any incorrectness - the commit reference link did not accept inputs that were 'probably this sha' or similar - it was not meant in malice or laziness, but admittedly I was very tiered as a result of the unpredictability of this issue.=20 I suspect this may actually be dead hardware but it's hard to tell. If some= body is interested in exploring this issue further feel free to provide instruc= tion over the next few days, otherwise I'll buy a new motherboard / RMA the processor if the motherboard does not fix the issue. I value both my and al= l of your time, so buying new equipment in the hopes that I'm rid of the problem= is my preference unless there's some burning desire for further exploration. Here are some facts: - `stress-ng --class cpu --seq 32` reliably crashes the machine in less tha= n 60 seconds with the error message 'stress-ng: fail: [2701] af-alg: ctr(twofis= h): decrypted data different from original data (possible kernel bug)', as well= as other algos (pcbc(fcrypt), cbc(sm4) etc) noting `dd if=3D/dev/zero` is not cryptographic. I routinely checksum files with sha and do not notice any inconsistencies. - I have tried vanilla kernels inc. 6.0.1 and 6.8, `dd` _seems_ to fail fas= ter with more recent kernels, but maybe that's just due to a small test sample size. - I have been unable to crash Windows using Prime95 (24h) Furmark (24h) nor= dd, nor am I aware of any errors from either tool. Windows install routinely BS= OD, but went away as soon as I switched to a different USB stick both freshly flashed - it's possible this is related, but it could also be a bad USB. - The motherboard is an ASUS Prime Z790-P WiFi D4 LGA 1700, the processor a 13900k, I have been experiencing the issue for about 12 months, seemingly it has become more frequent lately - I cannot visually see any problems with the motherboard, no bloated capacitors as far as I can tell. - I have replaced the RAM, PSU, SSDs (w/ an non-samsung model) and removed = all aux cards, with the exception of onboard wifi6 which cannot be removed - Memtest86+ was run with my original 128G ram configuration on 2x24h occas= ions and did not yield any errors indicating cpu<>memory integrity is not the is= sue --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=