From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e28smtp03.in.ibm.com (e28smtp03.in.ibm.com [122.248.162.3]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e28smtp03.in.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 7243E1007D2 for ; Fri, 2 Jul 2010 16:47:06 +1000 (EST) Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by e28smtp03.in.ibm.com (8.14.4/8.13.1) with ESMTP id o626l1Jo002164 for ; Fri, 2 Jul 2010 12:17:01 +0530 Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o626l1xH4124888 for ; Fri, 2 Jul 2010 12:17:01 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o626l0gO010251 for ; Fri, 2 Jul 2010 12:17:00 +0530 Message-ID: <4C2D8B63.2030500@linux.vnet.ibm.com> Date: Fri, 02 Jul 2010 12:16:59 +0530 From: divya MIME-Version: 1.0 To: maciej.rutecki@gmail.com Subject: Re: Oops while running fs_racer test on a POWER6 box against latest git References: <4C2B28F3.7000006@linux.vnet.ibm.com> <201007012025.30452.maciej.rutecki@gmail.com> In-Reply-To: <201007012025.30452.maciej.rutecki@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Cc: Latchesar Ionkov , jaxboe@fusionio.com, LKML , linuxppc-dev@ozlabs.org, Ron Minnich , hch@lst.de List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thursday 01 July 2010 11:55 PM, Maciej Rutecki wrote: > On środa, 30 czerwca 2010 o 13:22:27 divya wrote: > >> While running fs_racer test from LTP on a POWER6 box against latest >> git(2.6.35-rc3-git4 - commitid 984bc9601f64fd) came across the following >> warning followed by multiple oops. >> >> > I created a Bugzilla entry at > https://bugzilla.kernel.org/show_bug.cgi?id=16324 > for your bug report, please add your address to the CC list in there, thanks! > > > Here I find a cleaner back trace while running fs_racer test from LTP on a POWER6 box against the latest git(2.6.35-rc3-git5 - commitid 980019d74e4b242) Badness at kernel/mutex-debug.c:64 BUG: key (null) not in .data! NIP: c0000000000be9e8 LR: c0000000000be9cc CTR: 0000000000000000 REGS: c00000010bb176f0 TRAP: 0700 Not tainted (2.6.35-rc3-git5-autotest) BUG: key 00000000000001d8 not in .data! BUG: key 00000000000001e0 not in .data! BUG: key 00000000000001e8 not in .data! MSR: 8000000000029032 Unable to handle kernel paging request for data at address 0x00000028 Faulting instruction address: 0xc0000000003ad0ec Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=1024 NUMA pSeries last sysfs file: /sys/devices/system/cpu/cpu19/cache/index1/shared_cpu_map Page fault in user mode with in_atomic() = 1 mm = c00000010943e600 Modules linked in: NIP = fff9e98fc40 MSR = 800000004001d032 ipv6 fuse loop Unable to handle kernel paging request for unknown fault dm_mod Faulting instruction address: 0xc00000000008d0f4 sr_mod ibmveth cdrom sg sd_mod crc_t10dif ibmvscsic scsi_transport_srp scsi_tgt scsi_mod NIP: c0000000003ad0ec LR: c00000000064c3b0 CTR: c0000000003a6eb0 REGS: c000000109b4f610 TRAP: 0300 Not tainted (2.6.35-rc3-git5-autotest) MSR: 8000000000009032 CR: 88004484 XER: 00000001 DAR: 0000000000000028, DSISR: 0000000040010000 TASK = c000000109a98600[7403] 'mkdir' THREAD: c000000109b4c000 CPU: 19 GPR00: 0000000080000013 c000000109b4f890 c000000000d3d798 0000000000000028 GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000001 GPR08: 0000000000000000 0000000000000028 c000000000189f2c c000000109a98600 GPR12: 0000000024004424 c00000000f602f80 00000000000041ff 0000000000000001 GPR16: 0000000000000002 c00000010d8304c0 c000000109b4fb44 0000000000000000 GPR20: c00000010df77908 fffffffffffff000 0000000000010000 00000000000041ff GPR24: c00000010df77758 c000000109fa1800 c00000010df77908 c0000000ff236600 GPR28: 0000000000000028 0000000000000040 c000000000ca7b38 c000000000189f2c NIP [c0000000003ad0ec] .do_raw_spin_trylock+0x10/0x48 LR [c00000000064c3b0] ._raw_spin_lock+0x50/0xa4 Call Trace: [c000000109b4f890] [c00000000064c3a4] ._raw_spin_lock+0x44/0xa4 (unreliable) [c000000109b4f920] [c000000000189f2c] .new_inode+0x4c/0xe4 [c000000109b4f9b0] [c0000000002257fc] .ext3_new_inode+0x84/0xb70 [c000000109b4fad0] [c00000000022f1ec] .ext3_mkdir+0x130/0x438 [c000000109b4fbe0] [c00000000017adb4] .vfs_mkdir+0xb8/0x160 [c000000109b4fc80] [c00000000017e52c] .SyS_mkdirat+0xb0/0x114 [c000000109b4fdc0] [c00000000017a730] .SyS_mkdir+0x1c/0x30 [c000000109b4fe30] [c0000000000085b4] syscall_exit+0x0/0x40 Instruction dump: eb41ffd0 7c0803a6 eb61ffd8 eb81ffe0 eba1ffe8 ebc1fff0 ebe1fff8 4e800020 38000000 7c691b78 980d0214 800d0008<7d601829> 2c0b0000 40c20010 7c00192d Oops: Weird page fault, sig: 11 [#2] Pls let me know if this back trace would help in analyzing further. Meanwhile I shall do a git bisect and send the inputs. Thanks Divya