Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758865AbYFHB0b (ORCPT ); Sat, 7 Jun 2008 21:26:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755411AbYFHB0V (ORCPT ); Sat, 7 Jun 2008 21:26:21 -0400 Received: from wsip-70-184-212-2.om.om.cox.net ([70.184.212.2]:38944 "EHLO hachi.dashjr.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755355AbYFHB0T (ORCPT ); Sat, 7 Jun 2008 21:26:19 -0400 X-Greylist: delayed 396 seconds by postgrey-1.27 at vger.kernel.org; Sat, 07 Jun 2008 21:26:19 EDT From: Luke -Jr Organization: -Jr Family To: "linux-kernel" Subject: bcm33xx port Date: Sat, 7 Jun 2008 20:19:38 -0500 User-Agent: KMail/1.9.9 PGP-Key-Fingerprint: CE5A D56A 36CC 69FA E7D2 3558 665F C11D D53E 9583 Jabber-ID: luke@dashjr.org MIME-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_uOzSIX8iAFi1DAh" Message-Id: <200806072019.42108.luke@dashjr.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4762 Lines: 124 --Boundary-00=_uOzSIX8iAFi1DAh Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline I am working on a port for the bcm33xx platform, which includes a MIPS CPU: http://wiki.openwrt.org/BroadcomBCM33xxPort However, I seem to be hitting problems with memory allocation, as load_elf_binary is segfaulting inside padzero/__bzero. This is my first attempt at real Linux kernel development, so if anyone could throw me pointers on how I would approach debugging and fixing this problem, I'd really appreciate it. (boot log with early printk is attached) Thanks, Luke --Boundary-00=_uOzSIX8iAFi1DAh Content-Type: text/x-log; charset="us-ascii"; name="kernel.log" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="kernel.log" Linux version 2.6.25.4-svn11266-dirty8 (luke-jr@tsuruki) (gcc version 4.1.2 (Gentoo 4.1.2 p1.1)) #105 Fri Jun 6 22:46:18 CDT 2008 Broadcom BCM963xx prom init Boot loader is : CFEv2 console [early0] enabled CPU revision is: 00028000 (Broadcom BCM33xx) Determined physical RAM map: memory: 00fa0000 @ 00000000 (usable) User-defined physical RAM map: memory: 007a1200 @ 00000000 (usable) Initrd not found or empty - disabling initrd Zone PFN ranges: Normal 0 -> 1953 Movable zone start PFN for each node early_node_map[1] active PFN ranges 0: 0 -> 1953 Built 1 zonelists in Zone order, mobility grouping off. Total pages: 1938 Kernel command line: console=ttyS0,38400 mem=8000000 Primary instruction cache 8kB, VIPT, 2-way, linesize 16 bytes. Primary data cache 4kB, 2-way, VIPT, no aliases, linesize 16 bytes Synthesized clear page handler (26 instructions). Synthesized copy page handler (46 instructions). PID hash table entries: 32 (order: 5, 128 bytes) calculating r4koff... 0000fa00(64000) CPU frequency 32.00 MHz irq 8: nobody cared (try booting with the "irqpoll" option) Call Trace: [<80017124>] dump_stack+0x8/0x34 [<80050a74>] __report_bad_irq+0x44/0xd8 [<80050dcc>] note_interrupt+0x2c4/0x308 [<80051fac>] handle_level_irq+0xfc/0x120 [<80010a18>] plat_irq_dispatch+0x190/0x1c8 [<80011484>] ret_from_irq+0x0/0x4 [<80110b68>] start_kernel+0x228/0x3b4 handlers: [<8004f8b0>] (no_action+0x0/0x8) Disabling IRQ #8 console handover: boot [early0] -> real [ttyS0] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 5992k/7812k available (849k kernel code, 1820k reserved, 171k data, 592k init, 0k highmem) Calibrating delay loop (skipped)... 0.00 BogoMIPS preset Mount-cache hash table entries: 512 Broadcom BCM963xx Watchdog timer io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) bcm963xx_serial driver v2.0 brd: module loaded Freeing unused kernel memory: 592k freed Warning: unable to open an initial console. Reserved instruction in kernel code[#1]: Cpu 0 $ 0 : 00000000 10000400 00000000 004e1ffc $ 4 : 004e014c 00000000 00000ef4 00000ef4 $ 8 : 00000034 004e0fcc 004e010c 801a15c0 $12 : 00080000 9696cd55 0000014a 000058ad $16 : 004e5cac 801c9600 801ca780 00000000 $20 : 004e010c 801d9e90 004e010c 00000006 $24 : f1c27a83 8001b170 $28 : 801d8000 801d9c88 004e010c 800aa1fc Hi : 00000000 Lo : 00000000 epc : 800c66f4 __bzero+0x38/0x164 Not tainted ra : 800aa1fc padzero+0x5c/0x74 Status: 10000403 KERNEL EXL IE Cause : 00808028 PrId : 00028000 (Broadcom BCM33xx) Process init (pid: 1, threadinfo=801d8000, task=801d7868) Stack : 800aafcc 800aabec 801ca780 00000080 80083b00 80083ad0 00006012 00000000 ffffffff 004e010c 004dd2d4 0049d2d4 00400000 00000000 801d7868 8007ffc4 00000000 00000000 004dd2d4 0049d2d4 00400000 801d9cdc 004e5cac 80495600 00000001 00000000 00400000 801f6ea0 00000000 8078b980 8010cd70 801ca780 fffffffe 8010cae0 801d9e90 fffffff8 80110000 00000000 80100000 8007bf54 ... Call Trace: [<800c66f4>] __bzero+0x38/0x164 [<800aa1fc>] padzero+0x5c/0x74 [<800aafcc>] load_elf_binary+0x948/0x145c [<8007bf54>] search_binary_handler+0x78/0x18c [<800aa0dc>] load_script+0x25c/0x270 [<8007bf54>] search_binary_handler+0x78/0x18c [<8007df84>] do_execve+0x18c/0x258 [<8001570c>] sys_execve+0x4c/0x78 [<80018390>] stack_done+0x20/0x3c Code: 30c8003c 01244821 24840040 ac85ffc4 ac85ffc8 ac85ffcc ac85ffd0 ac85ffd4 Kernel panic - not syncing: Attempted to kill init! --Boundary-00=_uOzSIX8iAFi1DAh-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/