From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id 54E8B6B004F for ; Sun, 11 Jan 2009 09:18:59 -0500 (EST) Date: Sun, 11 Jan 2009 15:18:55 +0100 From: Tobias Klausmann Subject: WARNING in vmap_page_range on alpha since 2.6.28 Message-ID: <20090111141855.GA7416@eric.schwarzvogel.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org To: Linux Kernel Mailing List Cc: linux-mm@kvack.org List-ID: Hi! I've stumbled across this WARNING: when booting 2.6.28 + patch on my alpha. This happens consistently (i.e. on every boot) and keeps happening while the machine is booted: ------------[ cut here ]------------ WARNING: at mm/vmalloc.c:104 vmap_page_range+0x1b8/0x320() Modules linked in: fffffc007f03b968 0000000000000003 fffffc0000377e48 fffffffc00002000 fffffffc00008000 0000000000000003 6761705f70616d76 2b65676e61725f65 78302f3862317830 0000000000303233 fffffc00006f0828 0000000000000000 fffffc00006efcd8 fffffc00006efcd8 fffffc00006f0830 0000000000000000 0000000000000000 fffffc00006efd18 0000000000000001 00000000000200d2 0000000000000000 0000000000000000 0000000000000001 0000000000000044 Trace: [] vmap_page_range+0x1b8/0x320 [] __vmalloc_area_node+0xb8/0x1b0 [] map_vm_area+0x34/0x60 [] __vmalloc_area_node+0x150/0x1b0 [] __vmalloc_area_node+0xfc/0x1b0 [] agp_add_bridge+0x1a4/0x610 [] agp_amdk7_probe+0x17c/0x2ec [] pci_device_probe+0x8c/0xc0 [] driver_probe_device+0xa8/0x230 [] __driver_attach+0xdc/0xe0 [] bus_for_each_dev+0x78/0xd0 [] __driver_attach+0x0/0xe0 [] driver_attach+0x2c/0x40 [] bus_add_driver+0x28c/0x340 [] driver_register+0x94/0x1d0 [] __pci_register_driver+0x64/0xf0 [] do_one_initcall+0x34/0x1e0 [] proc_register+0x6c/0x280 [] proc_register+0x50/0x280 [] create_proc_entry+0x7c/0x100 [] register_irq_proc+0xbc/0xe0 [] init_irq_proc+0x74/0xa0 [] kernel_thread+0x28/0x90 [] entSys+0xa4/0xc0 ---[ end trace 9863e03dd539368c ]--- Here's a full dmesg: http://eric.schwarzvogel.de/~klausman/kernel/2.6.28/alpha/dmesg_post_boot.txt Note that it happens again later in the same dmesg. The messages always mention page allocation at the top of the trace. The patch mentioned above is commit 1684f5ddd4c0c754f52c78eaa2c5c69ad09fb18c which fixes compilation on alpha (see http://bugzilla.kernel.org/show_bug.cgi?id=12289) The patch I used is here: http://eric.schwarzvogel.de/~klausman/kernel/2.6.28/alpha/pci.patch Here's my config: http://eric.schwarzvogel.de/~klausman/kernel/2.6.28/alpha/config.txt shortened by grep ^C: http://eric.schwarzvogel.de/~klausman/kernel/2.6.28/alpha/config-shortened.txt The normal console output (catched via serial console) is here: http://eric.schwarzvogel.de/~klausman/kernel/2.6.28/alpha/console_output.txt The machine in question is a Samsung UP1500. CPU is EV68AL on an ALI chipset (ali15x3). Last kernel to work perfectly is a vanilla 2.6.27.10. Before I dig into a rather time-consuming bisect, I'd like to hear informed opinions :) Regards & TIA, Tobias -- This sentence no verb. This sentence short. This signature done. -- 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