From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id C88806B004D for ; Sun, 15 Nov 2009 22:38:58 -0500 (EST) Received: by iwn34 with SMTP id 34so3742440iwn.12 for ; Sun, 15 Nov 2009 19:38:57 -0800 (PST) MIME-Version: 1.0 Date: Mon, 16 Nov 2009 11:38:57 +0800 Message-ID: <2df346410911151938r1eb5c5e4q9930ac179d61ef01@mail.gmail.com> Subject: [BUG]2.6.27.y some contents lost after writing to mmaped file From: JiSheng Zhang Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, stable@kernel.org, gregkh@suse.de List-ID: Hi, I triggered a failure in an fs test with fsx-linux from ltp. It seems that fsx-linux failed at mmap->write sequence. Tested kernel is 2.6.27.12 and 2.6.27.39 Tested file system: ext3, tmpfs. IMHO, it impacts all file systems. Some fsx-linux log is: READ BAD DATA: offset = 0x2771b, size = 0xa28e OFFSET GOOD BAD RANGE 0x287e0 0x35c9 0x15a9 0x80 operation# (mod 256) for the bad datamay be 21 ... 7828: 1257514978.306753 READ 0x23dba thru 0x25699 (0x18e0 bytes) 7829: 1257514978.306899 MAPWRITE 0x27eeb thru 0x2a516 (0x262c bytes) ******WWWW 7830: 1257514978.307504 READ 0x2771b thru 0x319a8 (0xa28e bytes) ***RRRR*** Correct content saved for comparison ... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org