From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp03.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id D01D4B7B65 for ; Wed, 23 Sep 2009 18:23:14 +1000 (EST) Received: from d23relay02.au.ibm.com (d23relay02.au.ibm.com [202.81.31.244]) by e23smtp03.au.ibm.com (8.14.3/8.13.1) with ESMTP id n8N8KjFh008088 for ; Wed, 23 Sep 2009 18:20:45 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay02.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n8N8NC1a790604 for ; Wed, 23 Sep 2009 18:23:12 +1000 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n8N8NCPT025238 for ; Wed, 23 Sep 2009 18:23:12 +1000 Message-ID: <4AB9DAEC.3060309@in.ibm.com> Date: Wed, 23 Sep 2009 13:53:08 +0530 From: Sachin Sant MIME-Version: 1.0 To: Tejun Heo Subject: Re: 2.6.31-git5 kernel boot hangs on powerpc References: <4AB0D947.8010301@in.ibm.com> <4AB214C3.4040109@in.ibm.com> <1253185994.8375.352.camel@pasglop> <4AB25B61.9020609@kernel.org> <4AB266AF.9080705@in.ibm.com> <4AB49C37.6020003@in.ibm.com> In-Reply-To: <4AB49C37.6020003@in.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: Linux/PPC Development , David Miller List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sachin Sant wrote: > Sachin Sant wrote: >> Tejun Heo wrote: >>> Ah... sorry about that. Sachin, is it possible for you to build the >>> kernel with debug info and ask gdb where the stalling NIP is in the c >>> file? >>> >> <6>NET: Registered protocol family 10 >> <3>BUG: soft lockup - CPU#2 stuck for 61s! [modprobe:1865] >> <4>Modules linked in: ipv6(+) fuse loop dm_mod sg sd_mod crc_t10dif >> ibmvscsic scsi_transport_srp scsi_tgt scsi_mod >> <4>NIP: c00000000004198c LR: c00000000015dac8 CTR: 0000000000000040 >> <4>REGS: c0000000fbdbb6f0 TRAP: 0901 Not tainted (2.6.31-git5) >> <4>MSR: 8000000000009032 CR: 44224420 XER: 20000001 >> <4>TASK = c0000000fbd57840[1865] 'modprobe' THREAD: c0000000fbdb8000 >> CPU: 2 >> <4>GPR00: 0000000000000040 c0000000fbdbb970 c000000000a96d08 >> d00007fffff00000 >> <4>GPR04: 0000000000000000 0000000000000000 d00007fffff00000 >> d00007fffff00000 >> <4>GPR08: 0000000000000000 c000000001020180 c000000000b6b4e8 >> 00000000000003c0 >> <4>GPR12: 0000000048224428 c000000000b82a00 >> <4>NIP [c00000000004198c] .memset+0x60/0xfc >> <4>LR [c00000000015dac8] .pcpu_alloc+0x758/0x960 >> <4>Call Trace: >> <4>[c0000000fbdbb970] [c00000000015da58] .pcpu_alloc+0x6e8/0x960 >> (unreliable) >> <4>[c0000000fbdbba90] [c000000000565664] .snmp_mib_init+0x34/0x9c >> <4>[c0000000fbdbbb20] [d00000000212e130] .ipv6_add_dev+0x1cc/0x3dc >> [ipv6] >> <4>[c0000000fbdbbbc0] [d0000000021598ac] .addrconf_init+0x6c/0x194 >> [ipv6] >> <4>[c0000000fbdbbc50] [d00000000215967c] .inet6_init+0x1bc/0x34c [ipv6] >> <4>[c0000000fbdbbce0] [c0000000000097a4] .do_one_initcall+0x88/0x1bc >> <4>[c0000000fbdbbd90] [c0000000000c84dc] .SyS_init_module+0x11c/0x29c >> <4>[c0000000fbdbbe30] [c0000000000085b4] syscall_exit+0x0/0x40 >> <4>Instruction dump: >> <4>98860000 38c60001 409e000c b0860000 38c60002 409d000c 90860000 >> 38c60004 >> <4>78a0d183 78a506a0 7c0903a6 4182002c f8860008 f8860010 >> f8860018 > Latest git (2.6.31-git9:78f28b7c555359c67c2a0d23f7436e915329421e) > still has this bug. One workaround i have found for this problem is to disable IPv6. With IPv6 disabled the machine boots OK. Till a reliable solution is available for this issue, i will keep IPv6 disabled in my configs. Thanks -Sachin > > -- --------------------------------- Sachin Sant IBM Linux Technology Center India Systems and Technology Labs Bangalore, India ---------------------------------