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([2a02:8070:a2a8:1a00:815a:3ed0:1912:b9b7]) by smtp.googlemail.com with ESMTPSA id f15sm3918494wmg.30.2021.11.19.06.19.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Nov 2021 06:19:30 -0800 (PST) Message-ID: Date: Fri, 19 Nov 2021 15:19:29 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1 Reply-To: uwe.sauter.de@gmail.com Subject: Re: Bug using new ntfs3 file system driver (5.15.2 on Arch Linux) Content-Language: de-DE To: Matthew Wilcox Cc: almaz.alexandrovich@paragon-software.com, ntfs3@lists.linux.dev, linux-fsdevel@vger.kernel.org References: From: Uwe Sauter In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Am 19.11.21 um 14:13 schrieb Matthew Wilcox: > On Fri, Nov 19, 2021 at 08:48:11AM +0100, Uwe Sauter wrote: >> [ 1132.645038] BUG: unable to handle page fault for address: 0000000000400000 >> [ 1132.645045] #PF: supervisor instruction fetch in kernel mode >> [ 1132.645047] #PF: error_code(0x0010) - not-present page >> [ 1132.645050] PGD 0 P4D 0 >> [ 1132.645053] Oops: 0010 [#1] PREEMPT SMP PTI >> [ 1132.645057] CPU: 7 PID: 429941 Comm: rsync Tainted: P OE >> 5.15.2-arch1-1 #1 e3bfbeb633edc604ba956e06f24d5659e31c294f >> [ 1132.645061] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./C226 WS, BIOS P3.40 06/25/2018 >> [ 1132.645063] RIP: 0010:0x400000 > > Your computer was trying to execute instructions at 0x400000. This > smells very much like a single bit flip; ie there was a function > pointer which should have been NULL, but actually had one bit flip > and so the CPU jumped to somewhere that doesn't have any memory > backing it. > > Can you run memtest86, or whatever the current flavour of memory testing > software is? > As I mentioned in the description the host is equipped with ECC memory. dmesg didn't show any sign of memory error that I would expect from a bit flip inside RAM. The hardware is * ASRock Rack C226 WS mainboard * Intel Xeon E3-1245 v3 * 4x Kingston 9965525-055.A00LF 8GB ECC memory. Also the host has been running fine after the bug triggered for 1.5h and today again for 7h.