From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4CE8AB7BE7 for ; Fri, 4 Dec 2009 20:08:32 +1100 (EST) Subject: Re: BUG: Bad page map in process From: Benjamin Herrenschmidt To: Sean MacLennan In-Reply-To: <20091203141853.3eafba47@lappy.seanm.ca> References: <20091203141853.3eafba47@lappy.seanm.ca> Content-Type: text/plain; charset="UTF-8" Date: Fri, 04 Dec 2009 20:08:27 +1100 Message-ID: <1259917707.2076.1271.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, 2009-12-03 at 14:18 -0500, Sean MacLennan wrote: > With 2.6.32 I sometimes get lots and lots of "Bad page map" errors as > shown below. I believe these started in 2.6.32-rc8 or possibly > 2.6.32-rc7. Pika just switched to 2.6.31 so I have been concentrating > on that release, and not really testing the 2.6.32 stream. > > I wish I could give more info, but I don't really even have the time to > write this email :( I am hoping somebody will have a eureka moment. That's a concern. Remind me what CPU / MMU type is Pika using ? Cheers, Ben. > Cheers, > Sean > > > [ 147.410448] BUG: Bad page map in process udevd pte:ffffffffffffffff pmd:cd883000 > [ 147.417989] addr:48003000 vm_flags:08000875 anon_vma:(null) mapping:cf4150ac index:3 > [ 147.425837] vma->vm_ops->fault: filemap_fault+0x0/0x410 > [ 147.431101] vma->vm_file->f_op->mmap: nfs_file_mmap+0x0/0x94 > [ 147.436795] Call Trace: > [ 147.439268] [cf2dbd80] [c00065a4] show_stack+0x48/0x168 (unreliable) > [ 147.445708] [cf2dbdb0] [c0064ac8] print_bad_pte+0x14c/0x204 > [ 147.451337] [cf2dbde0] [c0064cd4] vm_normal_page+0x90/0x98 > [ 147.456875] [cf2dbdf0] [c0064ee8] unmap_vmas+0x20c/0x638 > [ 147.462239] [cf2dbe80] [c0069194] exit_mmap+0xc8/0x170 > [ 147.467441] [cf2dbea0] [c001caa4] mmput+0x50/0xf4 > [ 147.472195] [cf2dbeb0] [c0020808] exit_mm+0x100/0x138 > [ 147.477299] [cf2dbee0] [c00211b0] do_exit+0xb0/0x580 > [ 147.482315] [cf2dbf20] [c00216c4] do_group_exit+0x44/0x9c > [ 147.487766] [cf2dbf30] [c0021730] sys_exit_group+0x14/0x28 > [ 147.493308] [cf2dbf40] [c000dde4] ret_from_syscall+0x0/0x3c > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev