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[Xen-devel] Re: Out sw-iommu space problem

Date: Thu, 15 Sep 2011 07:36:49 -0700 (PDT)

Delivery-date: Thu, 15 Sep 2011 07:37:59 -0700

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

With swiotlb=128768 from kern.log: Sep 15 14:27:45 heliMN02WV kernel: [ 3.595733] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) Sep 15 14:27:45 heliMN02WV kernel: [ 3.595738] DMA: Placing 251MB software IO TLB between ffff8800048c0000 - ffff880014440000 Sep 15 14:27:45 heliMN02WV kernel: [ 3.595740] DMA: software IO TLB at phys 0x48c0000 â 0x14440000 It seems swiotlb was assigned 251 mb Without swiotlb= from kern.log: Sep 15 08:16:44 heliMN02WV kernel: [ 3.400528] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) Sep 15 08:16:44 heliMN02WV kernel: [ 3.400533] DMA: Placing 64MB software IO TLB between ffff8800048c0000 - ffff8800088c0000 Sep 15 08:16:44 heliMN02WV kernel: [ 3.400535] DMA: software IO TLB at phys 0x48c0000 â 0x88c0000 I have set swiotlb=65762, i have do reboot of dom0 but after always problem on save of service xendomains shutdown, not sm iommu out of memory but: Sep 15 15:29:15 heliMN02WV kernel: [ 641.006286] tapdisk2[6891]: segfault at 7fff58bb7fe8 ip 00000000004082ac sp 00007fff58bb7ff0 error 6 in tapdisk2[400000+39000] Sep 15 15:29:15 heliMN02WV kernel: [ 641.026060] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 Sep 15 15:29:15 heliMN02WV kernel: [ 641.026200] IP: [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:29:15 heliMN02WV kernel: [ 641.026291] PGD 0 Sep 15 15:29:15 heliMN02WV kernel: [ 641.026371] Oops: 0000 [#1] SMP Sep 15 15:29:15 heliMN02WV kernel: [ 641.026483] last sysfs file: /sys/devices/virtual/blktap2/blktap6/remove Sep 15 15:29:15 heliMN02WV kernel: [ 641.026541] CPU 2 Sep 15 15:29:15 heliMN02WV kernel: [ 641.026619] Modules linked in: xt_tcpudp tun xt_physdev iptable_filter ip_tables x_tables bridge stp ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 sha256_generic aes_x86_64 aes_generic cbc blktap xen_evtchn xenfs loop dm_crypt snd_pcm snd_timer snd soundcore snd_page_alloc evdev joydev dcdbas pcspkr power_meter button processor acpi_processor ext4 mbcache jbd2 crc16 dm_mod sd_mod crc_t10dif sg sr_mod cdrom usbhid hid ata_generic ehci_hcd ata_piix usbcore libata nls_base bnx2 mpt2sas scsi_transport_sas scsi_mod thermal thermal_sys [last unloaded: scsi_wait_scan] Sep 15 15:29:15 heliMN02WV kernel: [ 641.029000] Pid: 6891, comm: tapdisk2 Not tainted 2.6.32-5-xen-amd64 #1 PowerEdge T310 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029082] RIP: e030:[<ffffffff810ce79e>] [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029191] RSP: e02b:ffff88003dda3b58 EFLAGS: 00010202 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029246] RAX: 0000000000000880 RBX: ffff88003ebc1000 RCX: ffff88003ebc2000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029313] RDX: 0000000000000000 RSI: ffff88003ebc1000 RDI: 0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029372] RBP: ffff88003e7383d0 R08: 0000000000000000 R09: ffff88003c4d4780 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029431] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029491] R13: ffff88003e7383d0 R14: ffff88003deb7800 R15: 0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029555] FS: 00007f185cd15740(0000) GS:ffff880003728000(0000) knlGS:0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029630] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 15 15:29:15 heliMN02WV kernel: [ 641.029686] CR2: 0000000000000048 CR3: 0000000001001000 CR4: 0000000000002660 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029802] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 15 15:29:15 heliMN02WV kernel: [ 641.029861] Process tapdisk2 (pid: 6891, threadinfo ffff88003dda2000, task ffff8800027ae9f0) Sep 15 15:29:15 heliMN02WV kernel: [ 641.029936] Stack: Sep 15 15:29:15 heliMN02WV kernel: [ 641.029984] 0000000000000000 ffff880001d03b40 0000000000000000 0000000000000000 Sep 15 15:29:15 heliMN02WV kernel: [ 641.030134] <0> ffffffffa02dcee8 0000000000000000 ffffffff8100ece2 ffff8800023c9cc0 Sep 15 15:29:15 heliMN02WV kernel: [ 641.030359] <0> ffff88003ebc2000 0000000000000000 0000000000000000 ffff8800023c9cc0 Sep 15 15:29:15 heliMN02WV kernel: [ 641.030635] Call Trace: Sep 15 15:29:15 heliMN02WV kernel: [ 641.030699] [<ffffffffa02dcee8>] ? blktap_umap_uaddr_fn+0x0/0x59 [blktap] Sep 15 15:29:15 heliMN02WV kernel: [ 641.030764] [<ffffffff8100ece2>] ? check_events+0x12/0x20 Sep 15 15:29:15 heliMN02WV kernel: [ 641.030831] [<ffffffffa02de2a5>] ? blktap_device_end_request+0xbd/0x145 [blktap] Sep 15 15:29:15 heliMN02WV kernel: [ 641.030917] [<ffffffffa02dc743>] ? blktap_ring_vm_close+0x60/0xd1 [blktap] Sep 15 15:29:15 heliMN02WV kernel: [ 641.030977] [<ffffffff810d13f8>] ? remove_vma+0x2c/0x72 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031040] [<ffffffff810d1567>] ? exit_mmap+0x129/0x148 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031097] [<ffffffff8104cc5d>] ? mmput+0x3c/0xdf Sep 15 15:29:15 heliMN02WV kernel: [ 641.031153] [<ffffffff81050862>] ? exit_mm+0x102/0x10d Sep 15 15:29:15 heliMN02WV kernel: [ 641.031212] [<ffffffff8130d0d2>] ? _spin_lock_irq+0x7/0x22 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031274] [<ffffffff81052287>] ? do_exit+0x1f8/0x6c6 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031340] [<ffffffff8105d5a1>] ? __dequeue_signal+0xfb/0x124 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031399] [<ffffffff8100eccf>] ? xen_restore_fl_direct_end+0x0/0x1 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031458] [<ffffffff810e7f35>] ? kmem_cache_free+0x72/0xa3 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031514] [<ffffffff810527cb>] ? do_group_exit+0x76/0x9d Sep 15 15:29:15 heliMN02WV kernel: [ 641.031570] [<ffffffff8105f0b7>] ? get_signal_to_deliver+0x310/0x339 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031627] [<ffffffff8101104f>] ? do_notify_resume+0x87/0x73f Sep 15 15:29:15 heliMN02WV kernel: [ 641.031684] [<ffffffff810d15e1>] ? expand_downwards+0x5b/0x169 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031742] [<ffffffff8130f589>] ? do_page_fault+0x1f3/0x2f2 Sep 15 15:29:15 heliMN02WV kernel: [ 641.031798] [<ffffffff810125dc>] ? retint_signal+0x48/0x8c Sep 15 15:29:15 heliMN02WV kernel: [ 641.031853] Code: 48 89 4c 24 20 4c 89 44 24 18 48 89 54 24 40 72 04 0f 0b eb fe 48 8b 54 24 28 48 89 f0 48 8b 4c 24 40 48 c1 e8 24 25 f8 0f 00 00 <48> 8b 52 48 48 ff c9 48 89 0c 24 48 01 d0 48 89 44 24 30 48 b8 Sep 15 15:29:15 heliMN02WV kernel: [ 641.033878] RIP [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:29:15 heliMN02WV kernel: [ 641.033965] RSP <ffff88003dda3b58> Sep 15 15:29:15 heliMN02WV kernel: [ 641.034015] CR2: 0000000000000048 Sep 15 15:29:15 heliMN02WV kernel: [ 641.034067] ---[ end trace 162efc545a37e94b ]--- Sep 15 15:29:15 heliMN02WV kernel: [ 641.034120] Fixing recursive fault but reboot is needed! I have do other reboot of dom0, shutdown of domu how have give error, reboot of dom0 and other service xendomains stop but same error: Sep 15 15:55:32 heliMN02WV kernel: [ 441.038016] tapdisk2[4787]: segfault at 7ffff3d44ff8 ip 0000000000408296 sp 00007ffff3d45000 error 6 in tapdisk2[400000+39000] Sep 15 15:55:32 heliMN02WV kernel: [ 441.057462] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 Sep 15 15:55:32 heliMN02WV kernel: [ 441.057601] IP: [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:55:32 heliMN02WV kernel: [ 441.057691] PGD 0 Sep 15 15:55:32 heliMN02WV kernel: [ 441.057770] Oops: 0000 [#1] SMP Sep 15 15:55:32 heliMN02WV kernel: [ 441.057880] last sysfs file: /sys/devices/virtual/blktap2/blktap1/remove Sep 15 15:55:32 heliMN02WV kernel: [ 441.057938] CPU 2 Sep 15 15:55:32 heliMN02WV kernel: [ 441.058015] Modules linked in: xt_tcpudp xt_physdev iptable_filter ip_tables x_tables tun bridge stp ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 sha256_generic aes_x86_64 aes_generic cbc blktap xen_evtchn xenfs loop dm_crypt snd_pcm snd_timer snd soundcore snd_page_alloc joydev pcspkr evdev dcdbas button power_meter processor acpi_processor ext4 mbcache jbd2 crc16 dm_mod sd_mod crc_t10dif sg sr_mod cdrom usbhid hid ata_generic ata_piix ehci_hcd mpt2sas usbcore libata nls_base bnx2 scsi_transport_sas scsi_mod thermal thermal_sys [last unloaded: scsi_wait_scan] Sep 15 15:55:32 heliMN02WV kernel: [ 441.060309] Pid: 4787, comm: tapdisk2 Not tainted 2.6.32-5-xen-amd64 #1 PowerEdge T310 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060382] RIP: e030:[<ffffffff810ce79e>] [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060487] RSP: e02b:ffff88003dd15b58 EFLAGS: 00010202 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060542] RAX: 0000000000000880 RBX: ffff880003337000 RCX: ffff880003338000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060599] RDX: 0000000000000000 RSI: ffff880003337000 RDI: 0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060657] RBP: ffff880001ef50f0 R08: 0000000000000000 R09: ffff88003d161900 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060714] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060771] R13: ffff880001ef50f0 R14: ffff88003981e000 R15: 0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060831] FS: 00007f7e8720a740(0000) GS:ffff880003728000(0000) knlGS:0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.060905] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 15 15:55:32 heliMN02WV kernel: [ 441.060960] CR2: 0000000000000048 CR3: 0000000001001000 CR4: 0000000000002660 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061018] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061076] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061133] Process tapdisk2 (pid: 4787, threadinfo ffff88003dd14000, task ffff880035dbf810) Sep 15 15:55:32 heliMN02WV kernel: [ 441.061207] Stack: Sep 15 15:55:32 heliMN02WV kernel: [ 441.061255] 0000000000000000 ffff880035dc59c0 0000000000000000 0000000000000000 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061403] <0> ffffffffa02dcee8 0000000000000000 ffffffff8100ece2 ffff88003d499540 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061623] <0> ffff880003338000 0000000000000000 0000000000000000 ffff88003d499540 Sep 15 15:55:32 heliMN02WV kernel: [ 441.061886] Call Trace: Sep 15 15:55:32 heliMN02WV kernel: [ 441.061939] [<ffffffffa02dcee8>] ? blktap_umap_uaddr_fn+0x0/0x59 [blktap] Sep 15 15:55:32 heliMN02WV kernel: [ 441.062000] [<ffffffff8100ece2>] ? check_events+0x12/0x20 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062056] [<ffffffffa02de2a5>] ? blktap_device_end_request+0xbd/0x145 [blktap] Sep 15 15:55:32 heliMN02WV kernel: [ 441.062130] [<ffffffffa02dc743>] ? blktap_ring_vm_close+0x60/0xd1 [blktap] Sep 15 15:55:32 heliMN02WV kernel: [ 441.062189] [<ffffffff810d13f8>] ? remove_vma+0x2c/0x72 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062244] [<ffffffff810d1567>] ? exit_mmap+0x129/0x148 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062300] [<ffffffff8104cc5d>] ? mmput+0x3c/0xdf Sep 15 15:55:32 heliMN02WV kernel: [ 441.062355] [<ffffffff81050862>] ? exit_mm+0x102/0x10d Sep 15 15:55:32 heliMN02WV kernel: [ 441.062412] [<ffffffff8130d0d2>] ? _spin_lock_irq+0x7/0x22 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062468] [<ffffffff81052287>] ? do_exit+0x1f8/0x6c6 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062529] [<ffffffff8105d5a1>] ? __dequeue_signal+0xfb/0x124 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062590] [<ffffffff8100eccf>] ? xen_restore_fl_direct_end+0x0/0x1 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062647] [<ffffffff810e7f35>] ? kmem_cache_free+0x72/0xa3 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062703] [<ffffffff810527cb>] ? do_group_exit+0x76/0x9d Sep 15 15:55:32 heliMN02WV kernel: [ 441.062759] [<ffffffff8105f0b7>] ? get_signal_to_deliver+0x310/0x339 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062816] [<ffffffff8101104f>] ? do_notify_resume+0x87/0x73f Sep 15 15:55:32 heliMN02WV kernel: [ 441.062874] [<ffffffff810d15e1>] ? expand_downwards+0x5b/0x169 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062930] [<ffffffff8130f589>] ? do_page_fault+0x1f3/0x2f2 Sep 15 15:55:32 heliMN02WV kernel: [ 441.062986] [<ffffffff810125dc>] ? retint_signal+0x48/0x8c Sep 15 15:55:32 heliMN02WV kernel: [ 441.063041] Code: 48 89 4c 24 20 4c 89 44 24 18 48 89 54 24 40 72 04 0f 0b eb fe 48 8b 54 24 28 48 89 f0 48 8b 4c 24 40 48 c1 e8 24 25 f8 0f 00 00 <48> 8b 52 48 48 ff c9 48 89 0c 24 48 01 d0 48 89 44 24 30 48 b8 Sep 15 15:55:32 heliMN02WV kernel: [ 441.065075] RIP [<ffffffff810ce79e>] apply_to_page_range+0x47/0x2f3 Sep 15 15:55:32 heliMN02WV kernel: [ 441.065164] RSP <ffff88003dd15b58> Sep 15 15:55:32 heliMN02WV kernel: [ 441.065216] CR2: 0000000000000048 Sep 15 15:55:32 heliMN02WV kernel: [ 441.065270] ---[ end trace f19d313c82859143 ]--- Sep 15 15:55:32 heliMN02WV kernel: [ 441.065324] Fixing recursive fault but reboot is needed! Can you help me to solve this problem please? I try search on xen-unstable.hg "tapdisk2" revs and i found http://xenbits.xen.org/hg/staging/xen-unstable.hg/rev/a5a0817d9210 with some strange characters "Ã", there isn't on 4.0 testing and isn't this problem but can be a bug on unstable. -- View this message in context: http://xen.1045712.n5.nabble.com/Out-sw-iommu-space-problem-tp4803078p4807062.html Sent from the Xen - Dev mailing list archive at Nabble.com. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

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