From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bin Ren Subject: Re: Unable to handle kernel paging request at virtual address e9042464 Date: Tue, 26 Apr 2005 23:16:28 +0100 Message-ID: <8ae78025050426151656f5c530@mail.gmail.com> References: <426D4D07.9090606@diku.dk> <200504251706.23963.habanero@us.ibm.com> Reply-To: bin.ren@cl.cam.ac.uk Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <200504251706.23963.habanero@us.ibm.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Andrew Theurer Cc: xen-devel@lists.xensource.com, Jacob Gorm Hansen List-Id: xen-devel@lists.xenproject.org I've fixed this bug in the unstable repository. It's caused by two improperly set memory-related parameters and an lack of initialization of machine-to-phys mapping for newly allocated pages for the created domains. - Bin On 4/25/05, Andrew Theurer wrote: > On Monday 25 April 2005 16:54, Keir Fraser wrote: > > On 25 Apr 2005, at 21:03, Jacob Gorm Hansen wrote: > > > Do you know how the interface has changed, i.e. what I need to > > > modify in vmtools (xend is not an option since I am running with my > > > own userspace relinked above 0xf0000000 in dom0) to get this > > > working again? > > > > I don't think this was the problem actually, but anyway: createdomain > > no longer takes memsize nor initial mem size. To pin to a cpu you now > > use DOM0_PINCPU. To set max mem reservation you use DOM0_SETMAXMEM. > > To actually reserve memory you use > > do_dom_mem_op(MEMOP_increase_reservation). >=20 > FWIW, I think I am hitting an BUG on that very changeset (1.1367) by > trying to start a smp domU. I have narrowed it down the 1.1367, and I > am going to remove that diff from very latest bk pull an see what > happens. >=20 > -Andrew >=20 > BUG output: >=20 > Starting domain dom1 > ------------[ cut here ]------------ >=20 > kernel BUG at :46733! > invalid operand: 0000 [#1] > PREEMPT > Modules linked in: ipt_MASQUERADE iptable_nat ip_conntrack ip_tables > qla2300 qla2xxx scsi_transport_fc mptscsih mptbase > CPU: 0 > EIP: 0061:[] Not tainted VLI > EFLAGS: 00010286 (2.6.11-xen0-up) > EIP is at page_remove_rmap+0x3d/0x47 > eax: ffffffff ebx: 00000000 ecx: c04f771c edx: c16fdfe0 > esi: f48d5494 edi: 0feff067 ebp: 00001000 esp: f459de48 > ds: 007b es: 007b ss: 0069 > Process python (pid: 4300, threadinfo=3Df459c000 task=3Df76c3a80) > Stack: c1641640 f459c000 c0145244 c16fdfe0 0a3d5067 c01471fe 00000010 > c16fdfe0 > 00000000 b7525000 c04f771c b7925000 f455fb78 b7526000 00000000 > c0145408 > c04f771c f455fb74 b7525000 00001000 00000000 b7525000 f455fb78 > b7526000 > Call Trace: > [] zap_pte_range+0x186/0x2f3 > [] do_anonymous_page+0x169/0x210 > [] zap_pmd_range+0x57/0x75 > [] zap_pud_range+0x3a/0x5e > [] unmap_page_range+0x74/0x8b > [] unmap_vmas+0xfd/0x223 > [] unmap_region+0x7b/0xe9 > [] do_munmap+0x122/0x191 > [] sys_munmap+0x47/0x62 > [] syscall_call+0x7/0xb > Code: 0f 98 c0 84 c0 74 1c 8b 42 08 83 c0 01 78 1c c7 44 24 04 ff ff ff > ff c7 04 24 10 00 00 00 e8 a3 ef fe ff 83 c4 08 c3 0f 0b eb d1 <0f> 0b > 8d b6 00 00 00 00 eb da 55 57 56 53 83 ec 1c 8b 4c 24 34 > <6>note: python[4300] exited with preempt_count 1 > scheduling while atomic: python/0x00000001/4300 > [] schedule+0x534/0x5d8 > [] hypervisor_callback+0x37/0x40 > [] rwsem_down_read_failed+0x8d/0x18b > [] .text.lock.exit+0x27/0x8c > [] do_invalid_op+0x0/0xab > [] do_exit+0x9d/0x36b > [] do_invalid_op+0x0/0xab > [] do_trap+0x0/0xd5 > [] do_invalid_op+0xa2/0xab > [] page_remove_rmap+0x3d/0x47 > [] rmqueue_bulk+0x4a/0xd5 > [] prep_new_page+0x72/0x77 > [] buffered_rmqueue+0x153/0x2ba > [] error_code+0x38/0x40 > [] page_remove_rmap+0x3d/0x47 > [] zap_pte_range+0x186/0x2f3 > [] do_anonymous_page+0x169/0x210 > [] zap_pmd_range+0x57/0x75 > [] zap_pud_range+0x3a/0x5e > [] unmap_page_range+0x74/0x8b > [] unmap_vmas+0xfd/0x223 > [] unmap_region+0x7b/0xe9 > [] do_munmap+0x122/0x191 > [] sys_munmap+0x47/0x62 > [] syscall_call+0x7/0xb >=20 >=20 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >