From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: 2.5.33-mm4 filemap_copy_from_user: Unexpected page fault From: Steven Cole Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: 06 Sep 2002 09:48:05 -0600 Message-Id: <1031327285.1984.155.camel@spc9.esa.lanl.gov> Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-mm@kvack.org List-ID: With 2.5.33-mm4, I tried running dbench on an ext2 partition and was able to run up to dbench 80 successfully. However, at dbench 96, I got four messages like this: filemap_copy_from_user: Unexpected page fault Shortly after this, the box hung again, responsive to pings but little else. I did sysrq-p and typed in the results, which are slightly different than before using an ext3 partition. Sysrq-e and sysrq-i had no effect, so I had to sysrq-b. The following fsck on the ext2 disk was not fun. It may be worth noting that this hang occurred at 96 clients with dbench on ext2 and at 8 clients on ext3 (data=ordered). Here is the output of ksymoops on the sysrq-p result: Steven [steven@spc5 linux-2.5.33-mm4]$ ksymoops -K -L -O -v vmlinux -m System.map ] CPU: 1 EFLAGS: 00000202 Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EAX: 00000001 EBX: c90f3730 ECX: c90f3738 EDX: eb32bf88 ESI: c90f3730 EDI: 000065c2 EBP: 00000001 DS: 0068 ES: 0068 CR0: 8005003b CR2: 4212db0c CR3: 2a378000 CR4: 00000690 Call Trace: [] [] [] [] [] [] [] [] Warning (Oops_read): Code line not seen, dumping what data is available >>EIP; c0159bf4 <===== Trace; c0159e1e Trace; c013b8aa Trace; c013b4cb <__pdflush+12b/1d0> Trace; c013b570 Trace; c013b57b Trace; c013b830 Trace; c0107284 Trace; c0107289 1 warning issued. Results may not be reliable. -- 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/