From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from digeo-nav01.digeo.com (digeo-nav01 [192.168.1.233]) by packet.digeo.com (8.12.8/8.12.8) with SMTP id h2FMJVPu006861 for ; Sat, 15 Mar 2003 14:19:35 -0800 (PST) Date: Sat, 15 Mar 2003 12:03:43 -0800 From: Andrew Morton Subject: Re: 2.5.64-mm7 - dies on smp with raid Message-Id: <20030315120343.71faf732.akpm@digeo.com> In-Reply-To: <3E736505.2000106@aitel.hist.no> References: <20030315011758.7098b006.akpm@digeo.com> <3E736505.2000106@aitel.hist.no> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Helge Hafting Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Neil Brown List-ID: Helge Hafting wrote: > > mm7 crashed where mm2 works. > The machine is a dual celeron with two scsi disks with > some raid-1 & raid-0 partitions. > > deadline or anicipatory scheduler does not make a difference. > It dies anyway, attempting to kill init. > > Here's what I managed to write down before the 30 second reboot > kicked in: > > EIP is at md_wakeup_thread > > stack: > do_md_run > autorun_array > autorun_devices > autostart_arrays > md_ioctl > dentry_open > kmem_cache_free > blkdev_ioctl > sys_ioctl > init > init > > This happened during the boot process. The kernel is compiled > with gcc 2.95.4 from debian testing. The machine uses devfs > A lot of md updates went into Linus's tree overnight. Can you get some more details for Neil? Here is a wild guess: diff -puN drivers/md/md.c~a drivers/md/md.c --- 25/drivers/md/md.c~a 2003-03-15 12:02:04.000000000 -0800 +++ 25-akpm/drivers/md/md.c 2003-03-15 12:02:14.000000000 -0800 @@ -2818,6 +2818,8 @@ int md_thread(void * arg) void md_wakeup_thread(mdk_thread_t *thread) { + if (!thread) + return; dprintk("md: waking up MD thread %p.\n", thread); set_bit(THREAD_WAKEUP, &thread->flags); wake_up(&thread->wqueue); _ -- 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: aart@kvack.org