From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 4 Jun 2008 23:46:22 +0900 From: Yoichi Yuasa Subject: Collision of SLUB unique ID Message-Id: <20080604234622.4b73289c.yoichi_yuasa@tripeaks.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: yoichi_yuasa@tripeaks.co.jp, linux-mm@kvack.org List-ID: Hi, I'm testing SLUB on Cobalt(MIPS machine). I got the following error messages at the boot time. The Cobalt's ARCH_KMALLOC_MINALIGN is 128. At this time, kmalloc-192 unique ID has collided with kmalloc-256. kobject_add_internal failed for :0000256 with -EEXIST, don't try to register things with the same name in the same directory. Call Trace: [<80086f34>] dump_stack+0x8/0x34 [<801d4dbc>] kobject_add_internal+0x20c/0x214 [<801d51cc>] kobject_init_and_add+0x40/0x58 [<800fdbfc>] sysfs_slab_add+0x148/0x204 [<803ac1b0>] slab_sysfs_init+0x80/0x158 [<803a46c4>] kernel_init+0xa4/0x2e4 [<800830dc>] kernel_thread_helper+0x10/0x18 Bad page state in process 'swapper' page:81001d00 flags:0x00000400 mapping:00000000 mapcount:0 count:0 Trying to fix it up, but a reboot is needed Backtrace: Call Trace: [<80086f34>] dump_stack+0x8/0x34 [<800dadc4>] bad_page+0x74/0xb4 [<800db874>] free_hot_cold_page+0x21c/0x22c [<801d4aa8>] kobject_release+0x58/0xb4 [<801d5b38>] kref_put+0x68/0xac [<800fdc0c>] sysfs_slab_add+0x158/0x204 [<803ac1b0>] slab_sysfs_init+0x80/0x158 [<803a46c4>] kernel_init+0xa4/0x2e4 [<800830dc>] kernel_thread_helper+0x10/0x18 SLUB: Unable to add boot slab kmalloc-192 to sysfs Thanks, Yoichi -- 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