From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: VM problem with 2.4.8-ac9 (fwd) References: From: ebiederm@xmission.com (Eric W. Biederman) Date: 23 Aug 2001 00:19:58 -0600 In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Alan Cox Cc: linux-mm@kvack.org List-ID: Alan Cox writes: > > Suspect code would be: > > - tlb optimisations in recent -ac (tasks dying with segfault) > > Um the tlb optimisations go back to about 2.4.1-ac 8) > > My guess would be the vm changes you and marcelo did Can I ask which tlb optimisations these are. I have a couple of reports of dosemu killing the kernel on 2.4.7-ac6 and 2.4.8-ac7 and similiar kernels, on machines with slow processors. It has been confirmed in dosemu without X and without any direct hardware access. The kernel seems to oops in random interrupt handlers. Just off the cuff that feels like a lazy context switching bug. As dosemu plays with ldt's and lives in the vm86 syscall I can see it have problems other code paths don't. It is so weird I have been having a hard time believing the bug reports. Eric -- 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/