From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp04.au.ibm.com (E23SMTP04.au.ibm.com [202.81.18.173]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp04.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 94A56DE8DF for ; Wed, 5 Mar 2008 06:20:21 +1100 (EST) Received: from sd0109e.au.ibm.com (d23rh905.au.ibm.com [202.81.18.225]) by e23smtp04.au.ibm.com (8.13.1/8.13.1) with ESMTP id m24JJuiZ027353 for ; Wed, 5 Mar 2008 06:19:56 +1100 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by sd0109e.au.ibm.com (8.13.8/8.13.8/NCO v8.7) with ESMTP id m24JNx0U263582 for ; Wed, 5 Mar 2008 06:23:59 +1100 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m24JKJ9d010743 for ; Wed, 5 Mar 2008 06:20:20 +1100 Message-ID: <47CDA0F1.9030908@linux.vnet.ibm.com> Date: Wed, 05 Mar 2008 00:50:17 +0530 From: Kamalesh Babulal MIME-Version: 1.0 To: Andrew Morton Subject: [BUG] 2.6.25-rc3-mm1 kernel bug while running libhugetlbfs References: <20080304011928.e8c82c0c.akpm@linux-foundation.org> In-Reply-To: <20080304011928.e8c82c0c.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1 Cc: linuxppc-dev@ozlabs.org, Balbir Singh , linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Andrew, kernel bug is triggered while running libhugetlbfs test with 2.6.25-rc3-mm1 kernel over the x86 and power machines. ------------[ cut here ]------------ kernel BUG at mm/hugetlb.c:295! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/system/node/possible Modules linked in: Pid: 5484, comm: counters Not tainted (2.6.25-rc3-mm1-autokern1 #1) EIP: 0060:[] EFLAGS: 00010202 CPU: 0 EIP is at alloc_buddy_huge_page+0x7a/0xb0 EAX: c13acd01 EBX: f7d3a000 ECX: 00000000 EDX: 00006363 ESI: 00000001 EDI: 00000000 EBP: 00000000 ESP: f5539ebc DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process counters (pid: 5484, ti=f5538000 task=f60afa20 task.ti=f5538000) Stack: 00000001 c1053669 fffffff4 00000001 f5539ecc f5539ecc 00000001 fffffff4 f55d0e78 00000001 c105480c 00000001 00200000 c1054875 00000000 f54426c0 00200000 00000000 f54426c0 c10b0fb8 fffffff4 00200000 00000000 f55d0e78 Call Trace: [] gather_surplus_pages+0x64/0x16d [] hugetlb_acct_memory+0x1e/0x4a [] hugetlb_reserve_pages+0x3d/0x6b [] hugetlbfs_file_mmap+0x9b/0xe1 [] mmap_region+0x1dc/0x3ae [] do_mmap_pgoff+0x27f/0x28e [] sys_mmap2+0x5a/0x78 [] syscall_call+0x7/0xb ======================= Code: c1 e8 ed 27 1c 00 85 db 74 41 83 7b 04 00 75 10 68 c0 93 27 c1 e8 02 92 fc ff 58 e8 c1 02 fb ff f0 ff 4b 04 0f 94 c0 84 c0 74 04 <0f> 0b eb fe c7 43 38 3e 33 05 c1 8b 03 c1 e8 1c ff 04 85 60 ce EIP: [] alloc_buddy_huge_page+0x7a/0xb0 SS:ESP 0068:f5539ebc ---[ end trace 5a47484f8fe93a33 ]--- ------------[ cut here ]------------ cpu 0x3: Vector: 700 (Program Check) at [c0000000fb277740] pc: c0000000000c6f54: .alloc_buddy_huge_page+0x120/0x1dc lr: c0000000000c6f20: .alloc_buddy_huge_page+0xec/0x1dc sp: c0000000fb2779c0 msr: 8000000000029032 current = 0xc0000000fc4cae90 paca = 0xc0000000004fae80 pid = 6828, comm = counters kernel BUG at mm/hugetlb.c:295! enter ? for help [c0000000fb277a50] c0000000000c70e8 .hugetlb_acct_memory+0xd8/0x374 [c0000000fb277b10] c0000000000c769c .hugetlb_reserve_pages+0x184/0x2b0 [c0000000fb277bc0] c00000000018c950 .hugetlbfs_file_mmap+0xec/0x160 [c0000000fb277c70] c0000000000bc280 .mmap_region+0x254/0x4d4 [c0000000fb277d80] c00000000000b1b8 .sys_mmap+0xa4/0x104 [c0000000fb277e30] c00000000000872c syscall_exit+0x0/0x40 --- Exception: c01 (System Call) at 000004000019e528 SP (fffffcd4eb0) is in userspace 3:mon> -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL.