- 04 Mar, 2014 16 commits
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Jiang Liu authored
Now we have a PCI bus notification based mechanism to update DMAR device scope array, we could extend the mechanism to support boot time initialization too, which will help to unify and simplify the implementation. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by:
Joerg Roedel <joro@8bytes.org>
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Jiang Liu authored
Current Intel DMAR/IOMMU driver assumes that all PCI devices associated with DMAR/RMRR/ATSR device scope arrays are created at boot time and won't change at runtime, so it caches pointers of associated PCI device object. That assumption may be wrong now due to: 1) introduction of PCI host bridge hotplug 2) PCI device hotplug through sysfs interfaces. Wang Yijing has tried to solve this issue by caching <bus, dev, func> tupple instead of the PCI device object pointer, but that's still unreliable because PCI bus number may change in case of hotplug. Please refer to http://lkml.org/lkml/2013/11/5/64 Message from Yingjing's mail: after remove and rescan a pci device [ 611.857095] dmar: DRHD: handling fault status reg 2 [ 611.857109] dmar: DMAR:[DMA Read] Request device [86:00.3] fault addr ffff7000 [ 611.857109] DMAR:[fault reason 02] Present bit in context entry is clear [ 611.857524] dmar: DRHD: handling fault status reg 102 [ 611.857534] dmar: DMAR:[DMA Read] Request device [86:00.3] fault addr ffff6000 [ 611.857534] DMAR:[fault reason 02] Present bit in context entry is clear [ 611.857936] dmar: DRHD: handling fault status reg 202 [ 611.857947] dmar: DMAR:[DMA Read] Request device [86:00.3] fault addr ffff5000 [ 611.857947] DMAR:[fault reason 02] Present bit in context entry is clear [ 611.858351] dmar: DRHD: handling fault status reg 302 [ 611.858362] dmar: DMAR:[DMA Read] Request device [86:00.3] fault addr ffff4000 [ 611.858362] DMAR:[fault reason 02] Present bit in context entry is clear [ 611.860819] IPv6: ADDRCONF(NETDEV_UP): eth3: link is not ready [ 611.860983] dmar: DRHD: handling fault status reg 402 [ 611.860995] dmar: INTR-REMAP: Request device [[86:00.3] fault index a4 [ 611.860995] INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear This patch introduces a new mechanism to update the DRHD/RMRR/ATSR device scope caches by hooking PCI bus notification. Signed-off-by:
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Jiang Liu authored
Global DMA and interrupt remapping resources may be accessed in interrupt context, so use RCU instead of rwsem to protect them in such cases. Signed-off-by:
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Jiang Liu authored
Introduce a global rwsem dmar_global_lock, which will be used to protect DMAR related global data structures from DMAR/PCI/memory device hotplug operations in process context. DMA and interrupt remapping related data structures are read most, and only change when memory/PCI/DMAR hotplug event happens. So a global rwsem solution is adopted for balance between simplicity and performance. For interrupt remapping driver, function intel_irq_remapping_supported(), dmar_table_init(), intel_enable_irq_remapping(), disable_irq_remapping(), reenable_irq_remapping() and enable_drhd_fault_handling() etc are called during booting, suspending and resuming with interrupt disabled, so no need to take the global lock. For interrupt remapping entry allocation, the locking model is: down_read(&dmar_global_lock); /* Find corresponding iommu */ iommu = map_hpet_to_ir(id); if (iommu) /* * Allocate remapping entry and mark entry busy, * the IOMMU won't be hot-removed until the * allocated entry has been released. */ index = alloc_irte(iommu, irq, 1); up_read(&dmar_global_lock); For DMA remmaping driver, we only uses the dmar_global_lock rwsem to protect functions which are only called in process context. For any function which may be called in interrupt context, we will use RCU to protect them in following patches. Signed-off-by:
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Jiang Liu authored
Introduce for_each_dev_scope()/for_each_active_dev_scope() to walk {active} device scope entries. This will help following RCU lock related patches. Signed-off-by: -
Jiang Liu authored
Current Intel IOMMU driver only matches a PCIe root port with the first DRHD unit with the samge segment number. It will report false result if there are multiple DRHD units with the same segment number, thus fail to detect ATS capability for some PCIe devices. This patch refines function dmar_find_matched_atsr_unit() to search all DRHD units with the same segment number. An example DMAR table entries as below: [1D0h 0464 2] Subtable Type : 0002 <Root Port ATS Capability> [1D2h 0466 2] Length : 0028 [1D4h 0468 1] Flags : 00 [1D5h 0469 1] Reserved : 00 [1D6h 0470 2] PCI Segment Number : 0000 [1D8h 0472 1] Device Scope Entry Type : 02 [1D9h 0473 1] Entry Length : 08 [1DAh 0474 2] Reserved : 0000 [1DCh 0476 1] Enumeration ID : 00 [1DDh 0477 1] PCI Bus Number : 00 [1DEh 0478 2] PCI Path : [02, 00] [1E0h 0480 1] Device Scope Entry Type : 02 [1E1h 0481 1] Entry Length : 08 [1E2h 0482 2] Reserved : 0000 [1E4h 0484 1] Enumeration ID : 00 [1E5h 0485 1] PCI Bus Number : 00 [1E6h 0486 2] PCI Path : [03, 00] [1E8h 0488 1] Device Scope Entry Type : 02 [1E9h 0489 1] Entry Length : 08 [1EAh 0490 2] Reserved : 0000 [1ECh 0492 1] Enumeration ID : 00 [1EDh 0493 1] PCI Bus Number : 00 [1EEh 0494 2] PCI Path : [03, 02] [1F0h 0496 1] Device Scope Entry Type : 02 [1F1h 0497 1] Entry Length : 08 [1F2h 0498 2] Reserved : 0000 [1F4h 0500 1] Enumeration ID : 00 [1F5h 0501 1] PCI Bus Number : 00 [1F6h 0502 2] PCI Path : [03, 03] [1F8h 0504 2] Subtable Type : 0002 <Root Port ATS Capability> [1FAh 0506 2] Length : 0020 [1FCh 0508 1] Flags : 00 [1FDh 0509 1] Reserved : 00 [1FEh 0510 2] PCI Segment Number : 0000 [200h 0512 1] Device Scope Entry Type : 02 [201h 0513 1] Entry Length : 08 [202h 0514 2] Reserved : 0000 [204h 0516 1] Enumeration ID : 00 [205h 0517 1] PCI Bus Number : 40 [206h 0518 2] PCI Path : [02, 00] [208h 0520 1] Device Scope Entry Type : 02 [209h 0521 1] Entry Length : 08 [20Ah 0522 2] Reserved : 0000 [20Ch 0524 1] Enumeration ID : 00 [20Dh 0525 1] PCI Bus Number : 40 [20Eh 0526 2] PCI Path : [02, 02] [210h 0528 1] Device Scope Entry Type : 02 [211h 0529 1] Entry Length : 08 [212h 0530 2] Reserved : 0000 [214h 0532 1] Enumeration ID : 00 [215h 0533 1] PCI Bus Number : 40 [216h 0534 2] PCI Path : [03, 00] [218h 0536 2] Subtable Type : 0002 <Root Port ATS Capability> [21Ah 0538 2] Length : 0020 [21Ch 0540 1] Flags : 00 [21Dh 0541 1] Reserved : 00 [21Eh 0542 2] PCI Segment Number : 0000 [220h 0544 1] Device Scope Entry Type : 02 [221h 0545 1] Entry Length : 08 [222h 0546 2] Reserved : 0000 [224h 0548 1] Enumeration ID : 00 [225h 0549 1] PCI Bus Number : 80 [226h 0550 2] PCI Path : [02, 00] [228h 0552 1] Device Scope Entry Type : 02 [229h 0553 1] Entry Length : 08 [22Ah 0554 2] Reserved : 0000 [22Ch 0556 1] Enumeration ID : 00 [22Dh 0557 1] PCI Bus Number : 80 [22Eh 0558 2] PCI Path : [02, 02] [230h 0560 1] Device Scope Entry Type : 02 [231h 0561 1] Entry Length : 08 [232h 0562 2] Reserved : 0000 [234h 0564 1] Enumeration ID : 00 [235h 0565 1] PCI Bus Number : 80 [236h 0566 2] PCI Path : [03, 00] [238h 0568 2] Subtable Type : 0002 <Root Port ATS Capability> [23Ah 0570 2] Length : 0020 [23Ch 0572 1] Flags : 00 [23Dh 0573 1] Reserved : 00 [23Eh 0574 2] PCI Segment Number : 0000 [240h 0576 1] Device Scope Entry Type : 02 [241h 0577 1] Entry Length : 08 [242h 0578 2] Reserved : 0000 [244h 0580 1] Enumeration ID : 00 [245h 0581 1] PCI Bus Number : C0 [246h 0582 2] PCI Path : [02, 00] [248h 0584 1] Device Scope Entry Type : 02 [249h 0585 1] Entry Length : 08 [24Ah 0586 2] Reserved : 0000 [24Ch 0588 1] Enumeration ID : 00 [24Dh 0589 1] PCI Bus Number : C0 [24Eh 0590 2] PCI Path : [02, 02] [250h 0592 1] Device Scope Entry Type : 02 [251h 0593 1] Entry Length : 08 [252h 0594 2] Reserved : 0000 [254h 0596 1] Enumeration ID : 00 [255h 0597 1] PCI Bus Number : C0 [256h 0598 2] PCI Path : [03, 00] Signed-off-by:
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Jiang Liu authored
Domain id 0 will be assigned to invalid translation without allocating domain data structure if DMAR unit supports caching mode. So in function free_dmar_iommu(), we should check whether the domain pointer is NULL, otherwise it will cause system crash as below: [ 6.790519] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 [ 6.799520] IP: [<ffffffff810e2dc8>] __lock_acquire+0x11f8/0x1430 [ 6.806493] PGD 0 [ 6.817972] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [ 6.823303] Modules linked in: [ 6.826862] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc1+ #126 [ 6.834252] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BRIVTIN1.86B.0047.R00.1402050741 02/05/2014 [ 6.845951] task: ffff880455a80000 ti: ffff880455a88000 task.ti: ffff880455a88000 [ 6.854437] RIP: 0010:[<ffffffff810e2dc8>] [<ffffffff810e2dc8>] __lock_acquire+0x11f8/0x1430 [ 6.864154] RSP: 0000:ffff880455a89ce0 EFLAGS: 00010046 [ 6.870179] RAX: 0000000000000046 RBX: 0000000000000002 RCX: 0000000000000000 [ 6.878249] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000c8 [ 6.886318] RBP: ffff880455a89d40 R08: 0000000000000002 R09: 0000000000000001 [ 6.894387] R10: 0000000000000000 R11: 0000000000000001 R12: ffff880455a80000 [ 6.902458] R13: 0000000000000000 R14: 00000000000000c8 R15: 0000000000000000 [ 6.910520] FS: 0000000000000000(0000) GS:ffff88045b800000(0000) knlGS:0000000000000000 [ 6.919687] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.926198] CR2: 00000000000000c8 CR3: 0000000001e0e000 CR4: 00000000001407f0 [ 6.934269] Stack: [ 6.936588] ffffffffffffff10 ffffffff810f59db 0000000000000010 0000000000000246 [ 6.945219] ffff880455a89d10 0000000000000000 ffffffff82bcb980 0000000000000046 [ 6.953850] 0000000000000000 0000000000000000 0000000000000002 0000000000000000 [ 6.962482] Call Trace: [ 6.965300] [<ffffffff810f59db>] ? vprintk_emit+0x4fb/0x5a0 [ 6.971716] [<ffffffff810e3185>] lock_acquire+0x185/0x200 [ 6.977941] [<ffffffff821fbbee>] ? init_dmars+0x839/0xa1d [ 6.984167] [<ffffffff81870b06>] _raw_spin_lock_irqsave+0x56/0x90 [ 6.991158] [<ffffffff821fbbee>] ? init_dmars+0x839/0xa1d [ 6.997380] [<ffffffff821fbbee>] init_dmars+0x839/0xa1d [ 7.003410] [<ffffffff8147d575>] ? pci_get_dev_by_id+0x75/0xd0 [ 7.010119] [<ffffffff821fc146>] intel_iommu_init+0x2f0/0x502 [ 7.016735] [<ffffffff821a7947>] ? iommu_setup+0x27d/0x27d [ 7.023056] [<ffffffff821a796f>] pci_iommu_init+0x28/0x52 [ 7.029282] [<ffffffff81002162>] do_one_initcall+0xf2/0x220 [ 7.035702] [<ffffffff810a4a29>] ? parse_args+0x2c9/0x450 [ 7.041919] [<ffffffff8219d1b1>] kernel_init_freeable+0x1c9/0x25b [ 7.048919] [<ffffffff8219c8d2>] ? do_early_param+0x8a/0x8a [ 7.055336] [<ffffffff8184d3f0>] ? rest_init+0x150/0x150 [ 7.061461] [<ffffffff8184d3fe>] kernel_init+0xe/0x100 [ 7.067393] [<ffffffff8187b5fc>] ret_from_fork+0x7c/0xb0 [ 7.073518] [<ffffffff8184d3f0>] ? rest_init+0x150/0x150 [ 7.079642] Code: 01 76 18 89 05 46 04 36 01 41 be 01 00 00 00 e9 2f 02 00 00 0f 1f 80 00 00 00 00 41 be 01 00 00 00 e9 1d 02 00 00 0f 1f 44 00 00 <49> 81 3e c0 31 34 82 b8 01 00 00 00 0f 44 d8 41 83 ff 01 0f 87 [ 7.104944] RIP [<ffffffff810e2dc8>] __lock_acquire+0x11f8/0x1430 [ 7.112008] RSP <ffff880455a89ce0> [ 7.115988] CR2: 00000000000000c8 [ 7.119784] ---[ end trace 13d756f0f462c538 ]--- [ 7.125034] note: swapper/0[1] exited with preempt_count 1 [ 7.131285] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 7.131285] Signed-off-by:
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Jiang Liu authored
The iommu_count field in si_domain(static identity domain) is initialized to zero and never increases. It will underflow when tearing down iommu unit in function free_dmar_iommu() and leak memory. So refine code to correctly manage si_domain->iommu_count. Warning message caused by si_domain memory leak: [ 14.609681] IOMMU: Setting RMRR: [ 14.613496] Ignoring identity map for HW passthrough device 0000:00:1a.0 [0xbdcfd000 - 0xbdd1dfff] [ 14.623809] Ignoring identity map for HW passthrough device 0000:00:1d.0 [0xbdcfd000 - 0xbdd1dfff] [ 14.634162] IOMMU: Prepare 0-16MiB unity mapping for LPC [ 14.640329] Ignoring identity map for HW passthrough device 0000:00:1f.0 [0x0 - 0xffffff] [ 14.673360] IOMMU: dmar init failed [ 14.678157] kmem_cache_destroy iommu_devinfo: Slab cache still has objects [ 14.686076] CPU: 12 PID: 1 Comm: swapper/0 Not tainted 3.13.0-rc1-gerry+ #59 [ 14.694176] Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.99.99.x059.091020121352 09/10/2012 [ 14.707412] 0000000000000000 ffff88042dd33db0 ffffffff8156223d ffff880c2cc37c00 [ 14.716407] ffff88042dd33dc8 ffffffff811790b1 ffff880c2d3533b8 ffff88042dd33e00 [ 14.725468] ffffffff81dc7a6a ffffffff81b1e8e0 ffffffff81f84058 ffffffff81d8a711 [ 14.734464] Call Trace: [ 14.737453] [<ffffffff8156223d>] dump_stack+0x4d/0x66 [ 14.743430] [<ffffffff811790b1>] kmem_cache_destroy+0xf1/0x100 [ 14.750279] [<ffffffff81dc7a6a>] intel_iommu_init+0x122/0x56a [ 14.757035] [<ffffffff81d8a711>] ? iommu_setup+0x27d/0x27d [ 14.763491] [<ffffffff81d8a739>] pci_iommu_init+0x28/0x52 [ 14.769846] [<ffffffff81000342>] do_one_initcall+0x122/0x180 [ 14.776506] [<ffffffff81077738>] ? parse_args+0x1e8/0x320 [ 14.782866] [<ffffffff81d850e8>] kernel_init_freeable+0x1e1/0x26c [ 14.789994] [<ffffffff81d84833>] ? do_early_param+0x88/0x88 [ 14.796556] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 14.802626] [<ffffffff8154ffce>] kernel_init+0xe/0x130 [ 14.808698] [<ffffffff815756ac>] ret_from_fork+0x7c/0xb0 [ 14.814963] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 14.821640] kmem_cache_destroy iommu_domain: Slab cache still has objects [ 14.829456] CPU: 12 PID: 1 Comm: swapper/0 Not tainted 3.13.0-rc1-gerry+ #59 [ 14.837562] Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.99.99.x059.091020121352 09/10/2012 [ 14.850803] 0000000000000000 ffff88042dd33db0 ffffffff8156223d ffff88102c1ee3c0 [ 14.861222] ffff88042dd33dc8 ffffffff811790b1 ffff880c2d3533b8 ffff88042dd33e00 [ 14.870284] ffffffff81dc7a76 ffffffff81b1e8e0 ffffffff81f84058 ffffffff81d8a711 [ 14.879271] Call Trace: [ 14.882227] [<ffffffff8156223d>] dump_stack+0x4d/0x66 [ 14.888197] [<ffffffff811790b1>] kmem_cache_destroy+0xf1/0x100 [ 14.895034] [<ffffffff81dc7a76>] intel_iommu_init+0x12e/0x56a [ 14.901781] [<ffffffff81d8a711>] ? iommu_setup+0x27d/0x27d [ 14.908238] [<ffffffff81d8a739>] pci_iommu_init+0x28/0x52 [ 14.914594] [<ffffffff81000342>] do_one_initcall+0x122/0x180 [ 14.921244] [<ffffffff81077738>] ? parse_args+0x1e8/0x320 [ 14.927598] [<ffffffff81d850e8>] kernel_init_freeable+0x1e1/0x26c [ 14.934738] [<ffffffff81d84833>] ? do_early_param+0x88/0x88 [ 14.941309] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 14.947380] [<ffffffff8154ffce>] kernel_init+0xe/0x130 [ 14.953430] [<ffffffff815756ac>] ret_from_fork+0x7c/0xb0 [ 14.959689] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 14.966299] kmem_cache_destroy iommu_iova: Slab cache still has objects [ 14.973923] CPU: 12 PID: 1 Comm: swapper/0 Not tainted 3.13.0-rc1-gerry+ #59 [ 14.982020] Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.99.99.x059.091020121352 09/10/2012 [ 14.995263] 0000000000000000 ffff88042dd33db0 ffffffff8156223d ffff88042cb5c980 [ 15.004265] ffff88042dd33dc8 ffffffff811790b1 ffff880c2d3533b8 ffff88042dd33e00 [ 15.013322] ffffffff81dc7a82 ffffffff81b1e8e0 ffffffff81f84058 ffffffff81d8a711 [ 15.022318] Call Trace: [ 15.025238] [<ffffffff8156223d>] dump_stack+0x4d/0x66 [ 15.031202] [<ffffffff811790b1>] kmem_cache_destroy+0xf1/0x100 [ 15.038038] [<ffffffff81dc7a82>] intel_iommu_init+0x13a/0x56a [ 15.044786] [<ffffffff81d8a711>] ? iommu_setup+0x27d/0x27d [ 15.051242] [<ffffffff81d8a739>] pci_iommu_init+0x28/0x52 [ 15.057601] [<ffffffff81000342>] do_one_initcall+0x122/0x180 [ 15.064254] [<ffffffff81077738>] ? parse_args+0x1e8/0x320 [ 15.070608] [<ffffffff81d850e8>] kernel_init_freeable+0x1e1/0x26c [ 15.077747] [<ffffffff81d84833>] ? do_early_param+0x88/0x88 [ 15.084300] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 15.090362] [<ffffffff8154ffce>] kernel_init+0xe/0x130 [ 15.096431] [<ffffffff815756ac>] ret_from_fork+0x7c/0xb0 [ 15.102693] [<ffffffff8154ffc0>] ? rest_init+0xd0/0xd0 [ 15.189273] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) Signed-off-by:
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Jiang Liu authored
Reduce duplicated code to handle virtual machine domains, there's no functionality changes. It also improves code readability. Signed-off-by:
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Jiang Liu authored
Enhance function get_domain_for_dev() to release allocated resources if failed to create domain for PCIe endpoint, otherwise the allocated resources will get lost. Signed-off-by:
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Jiang Liu authored
Function get_domain_for_dev() is a little complex, simplify it by factoring out dmar_search_domain_by_dev_info() and dmar_insert_dev_info(). Signed-off-by:
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Jiang Liu authored
Move private structures and variables into intel-iommu.c, which will help to simplify locking policy for hotplug. Also delete redundant declarations. Signed-off-by:
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Jiang Liu authored
Factor out function dmar_alloc_dev_scope() from dmar_parse_dev_scope() for later reuse. Signed-off-by:
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Jiang Liu authored
Function device_notifier() in intel-iommu.c only remove domain_device_info data structure associated with a PCI device when handling PCI device driver unbinding events. If a PCI device has never been bound to a PCI device driver, there won't be BUS_NOTIFY_UNBOUND_DRIVER event when hot-removing the PCI device. So associated domain_device_info data structure may get lost. On the other hand, if iommu_pass_through is enabled, function iommu_prepare_static_indentify_mapping() will create domain_device_info data structure for each PCIe to PCIe bridge and PCIe endpoint, no matter whether there are drivers associated with those PCIe devices or not. So those domain_device_info data structures will get lost when hot-removing the assocated PCIe devices if they have never bound to any PCI device driver. To be even worse, it's not only an memory leak issue, but also an caching of stale information bug because the memory are kept in device_domain_list and domain->devices lists. Fix the bug by trying to remove domain_device_info data structure when handling BUS_NOTIFY_DEL_DEVICE event. Signed-off-by:
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Jiang Liu authored
Function device_notifier() in intel-iommu.c fails to remove device_domain_info data structures for PCI devices if they are associated with si_domain because iommu_no_mapping() returns true for those PCI devices. This will cause memory leak and caching of stale information in domain->devices list. So fix the issue by not calling iommu_no_mapping() and skipping check of iommu_pass_through. Signed-off-by:
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Jiang Liu authored
Array 'g_iommus' may be freed twice on error recovery path in function init_dmars() and free_dmar_iommu(), thus cause random system crash as below. [ 6.774301] IOMMU: dmar init failed [ 6.778310] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 6.785615] software IO TLB [mem 0x76bcf000-0x7abcf000] (64MB) mapped at [ffff880076bcf000-ffff88007abcefff] [ 6.796887] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC [ 6.804173] Modules linked in: [ 6.807731] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc1+ #108 [ 6.815122] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BRIVTIN1.86B.0047.R00.1402050741 02/05/2014 [ 6.836000] task: ffff880455a80000 ti: ffff880455a88000 task.ti: ffff880455a88000 [ 6.844487] RIP: 0010:[<ffffffff8143eea6>] [<ffffffff8143eea6>] memcpy+0x6/0x110 [ 6.853039] RSP: 0000:ffff880455a89cc8 EFLAGS: 00010293 [ 6.859064] RAX: ffff006568636163 RBX: ffff00656863616a RCX: 0000000000000005 [ 6.867134] RDX: 0000000000000005 RSI: ffffffff81cdc439 RDI: ffff006568636163 [ 6.875205] RBP: ffff880455a89d30 R08: 000000000001bc3b R09: 0000000000000000 [ 6.883275] R10: 0000000000000000 R11: ffffffff81cdc43e R12: ffff880455a89da8 [ 6.891338] R13: ffff006568636163 R14: 0000000000000005 R15: ffffffff81cdc439 [ 6.899408] FS: 0000000000000000(0000) GS:ffff88045b800000(0000) knlGS:0000000000000000 [ 6.908575] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.915088] CR2: ffff88047e1ff000 CR3: 0000000001e0e000 CR4: 00000000001407f0 [ 6.923160] Stack: [ 6.925487] ffffffff8143c904 ffff88045b407e00 ffff006568636163 ffff006568636163 [ 6.934113] ffffffff8120a1a9 ffffffff81cdc43e 0000000000000007 0000000000000000 [ 6.942747] ffff880455a89da8 ffff006568636163 0000000000000007 ffffffff81cdc439 [ 6.951382] Call Trace: [ 6.954197] [<ffffffff8143c904>] ? vsnprintf+0x124/0x6f0 [ 6.960323] [<ffffffff8120a1a9>] ? __kmalloc_track_caller+0x169/0x360 [ 6.967716] [<ffffffff81440e1b>] kvasprintf+0x6b/0x80 [ 6.973552] [<ffffffff81432bf1>] kobject_set_name_vargs+0x21/0x70 [ 6.980552] [<ffffffff8143393d>] kobject_init_and_add+0x4d/0x90 [ 6.987364] [<ffffffff812067c9>] ? __kmalloc+0x169/0x370 [ 6.993492] [<ffffffff8102dbbc>] ? cache_add_dev+0x17c/0x4f0 [ 7.000005] [<ffffffff8102ddfa>] cache_add_dev+0x3ba/0x4f0 [ 7.006327] [<ffffffff821a87ca>] ? i8237A_init_ops+0x14/0x14 [ 7.012842] [<ffffffff821a87f8>] cache_sysfs_init+0x2e/0x61 [ 7.019260] [<ffffffff81002162>] do_one_initcall+0xf2/0x220 [ 7.025679] [<ffffffff810a4a29>] ? parse_args+0x2c9/0x450 [ 7.031903] [<ffffffff8219d1b1>] kernel_init_freeable+0x1c9/0x25b [ 7.038904] [<ffffffff8219c8d2>] ? do_early_param+0x8a/0x8a [ 7.045322] [<ffffffff8184d5e0>] ? rest_init+0x150/0x150 [ 7.051447] [<ffffffff8184d5ee>] kernel_init+0xe/0x100 [ 7.057380] [<ffffffff8187b87c>] ret_from_fork+0x7c/0xb0 [ 7.063503] [<ffffffff8184d5e0>] ? rest_init+0x150/0x150 [ 7.069628] Code: 89 e5 53 48 89 fb 75 16 80 7f 3c 00 75 05 e8 d2 f9 ff ff 48 8b 43 58 48 2b 43 50 88 43 4e 5b 5d c3 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 c3 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 20 4c 8b 06 4c 8b [ 7.094960] RIP [<ffffffff8143eea6>] memcpy+0x6/0x110 [ 7.100856] RSP <ffff880455a89cc8> [ 7.104864] ---[ end trace b5d3fdc6c6c28083 ]--- [ 7.110142] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 7.110142] [ 7.120540] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) Signed-off-by:
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- 03 Mar, 2014 1 commit
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Linus Torvalds authored
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- 02 Mar, 2014 15 commits
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Not a huge amount happening, some MAINTAINERS updates, radeon, vmwgfx and tegra fixes" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/vmwgfx: avoid null pointer dereference at failure paths drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date. drm/vmwgfx: Remove some unused surface formats drm/radeon: enable speaker allocation setup on dce3.2 drm/radeon: change audio enable logic drm/radeon: fix audio disable on dce6+ drm/radeon: free uvd ring on unload drm/radeon: disable pll sharing for DP on DCE4.1 drm/radeon: fix missing bo reservation drm/radeon: print the supported atpx function mask MAINTAINERS: update drm git tree entry MAINTAINERS: add entry for drm radeon driver drm/tegra: Add guard to avoid double disable/enable of RGB outputs gpu: host1x: do not check previously handled gathers drm/tegra: fix typo 'CONFIG_TEGRA_DRM_FBDEV'
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are 2 USB patches for 3.14-rc5, one a new device id, and the other fixes a reported problem with threaded irqs and the USB EHCI driver" * tag 'usb-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: ehci: fix deadlock when threadirqs option is used USB: ftdi_sio: add Cressi Leonardo PID
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Linus Torvalds authored
Merge tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull sysfs fix from Greg KH: "Here is a single sysfs fix for 3.14-rc5. It fixes a reported problem with the namespace code in sysfs" * tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: sysfs: fix namespace refcnt leak
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging tree fixes from Greg KH: "Here are a few IIO fixes, and a new device id for a staging driver for 3.14-rc5. All have been in linux-next for a while, I did a final merge to get the IIO fixes into this tree, they were incorrectly in the char-misc tree for a few weeks, and I forgot to tell you to pull them from there. This makes it a single pull request for you" * tag 'staging-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: r8188eu: Add new device ID staging:iio:adc:MXS:LRADC: fix touchscreen statemachine iio:gyro: bug on L3GD20H gyroscope support iio: cm32181: Change cm32181 ambient light sensor driver iio: cm36651: Fix read/write integration time function.
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
more radeon fixes * 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: enable speaker allocation setup on dce3.2 drm/radeon: change audio enable logic drm/radeon: fix audio disable on dce6+ drm/radeon: free uvd ring on unload drm/radeon: disable pll sharing for DP on DCE4.1 drm/radeon: fix missing bo reservation drm/radeon: print the supported atpx function mask
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Greg Kroah-Hartman authored
These I forgot about before, but need to get into 3.14-final. Signed-off-by:Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Misc fixes, most of them on the tooling side" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tools: Fix strict alias issue for find_first_bit perf tools: fix BFD detection on opensuse perf: Fix hotplug splat perf/x86: Fix event scheduling perf symbols: Destroy unused symsrcs perf annotate: Check availability of annotate when processing samples
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Dave Airlie authored
Merge tag 'vmwgfx-fixes-3.14-2014-03-02' of git://people.freedesktop.org/~thomash/linux into drm-fixes A couple of minor fixes. Pull request of 2014-03-02 * tag 'vmwgfx-fixes-3.14-2014-03-02' of git://people.freedesktop.org/~thomash/linux: drm/vmwgfx: avoid null pointer dereference at failure paths drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date. drm/vmwgfx: Remove some unused surface formats
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Alexey Khoroshilov authored
vmw_takedown_otable_base() and vmw_mob_unbind() check for potential vmw_fifo_reserve() failure and print error message, but then immediately dereference NULL pointer. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com>
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Thomas Hellstrom authored
Backing mob contents is propagated to user-space, so make sure backing mobs are cleared when allocated. This also accidently fix rendering errors with celestia when emulating legacy mode. Also update driver date. Signed-off-by:
Brian Paul <brianp@vmware.com>
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Thomas Hellstrom authored
These formats are deprecated. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Peter Anvin: "The VMCOREINFO patch I'll pushing for this release to avoid having a release with kASLR and but without that information. I was hoping to include the FPU patches from Suresh, but ran into a problem (see other thread); will try to make them happen next week" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, kaslr: add missed "static" declarations x86, kaslr: export offset in VMCOREINFO ELF notes
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds authored
Pull SCSI target fixes from Nicholas Bellinger: "The bulk of the series are bugfixes for qla2xxx target NPIV support that went in for v3.14-rc1. Also included are a few DIF related fixes, a qla2xxx fix (Cc'ed to stable) from Greg W., and vhost/scsi protocol version related fix from Venkatesh. Also just a heads up that a series to address a number of issues with iser-target active I/O reset/shutdown is still being tested, and will be included in a separate -rc6 PULL request" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: vhost/scsi: Check LUN structure byte 0 is set to 1, per spec qla2xxx: Fix kernel panic on selective retransmission request Target/sbc: Don't use sg as iterator in sbc_verify_read target: Add DIF sense codes in transport_generic_request_failure target/sbc: Fix sbc_dif_copy_prot addr offset bug tcm_qla2xxx: Fix NAA formatted name for NPIV WWPNs tcm_qla2xxx: Perform configfs depend/undepend for base_tpg tcm_qla2xxx: Add NPIV specific enable/disable attribute logic qla2xxx: Check + fail when npiv_vports_inuse exists in shutdown qla2xxx: Fix qlt_lport_register base_vha callback race
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git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds authored
Pull slave-dma fixes from Vinod Koul: "This request brings you two small fixes. First one for fixing dereference of freed descriptor and second for fixing sdma bindings for it to work for imx25. I was planning to send this about 10days ago but then I had to proceed on my paternity leave and didnt get chance to send this. Now got a bit of time from dady duties :)" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dma: sdma: Add imx25 compatible dma: ste_dma40: don't dereference free:d descriptor
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI and power management fixes from Rafael Wysocki: "These three commits fix a recent intel_pstate regression and two old bugs that should be fixed in -stable too, one in the ACPI processor driver and one in the firmare loader. Specifics: - One of the recent intel_pstate driver fixes introduced a rounding error that on some systems causes the frequency to be stuck at the lowest level forever. Fix from Dirk Brandewie. - The firmware_class driver's PM notifier doesn't handle the PM_RESTORE_PREPARE event during hibernation image restore and that leads to a deadlock on umhelper_sem in __usermodehelper_disable(). Fix from Sebastian Capella. - acpi_processor_set_throttling() abuses set_cpus_allowed_ptr() in a nasty way which triggers the WARN_ON_ONCE() in wq_worker_waking_up() among other things. Fix from Lan Tianyu" * tag 'pm+acpi-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / processor: Rework processor throttling with work_on_cpu() PM / hibernate: Fix restore hang in freeze_processes() intel_pstate: Change busy calculation to use fixed point math.
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- 01 Mar, 2014 2 commits
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Ingo Molnar authored
Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent build fixes for certain distro environments, from Arnaldo Carvalho de Melo: * Problem on recent gcc on x86-32 related to strict alias issue for find_first_bit (Jiri Olsa). * OpenSuSE: BFD detection problems related to not explicitely listing all required libraries (Andi Kleen) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Greg Kroah-Hartman authored
Merge tag 'fixes-for-3.14d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: Fourth set of IIO fixes for the 3.14 kernel. A single line patch fixing a regression that was introduced in 3.13 in the reworking of the mxs touch screen and ADC drivers to be interrupt rather than polling driven. It resulted in a stray double reporting of the release coordinate in the touch screen driver. The bug lay in the adc side of the driver which left the statemachine in the wrong state.
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- 28 Feb, 2014 6 commits
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Russell King authored
Add a maintainers entry for the Armada DRM driver. Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dmLinus Torvalds authored
Pull device mapper fixes from Mike Snitzer: "A few dm-cache fixes, an invalid ioctl handling fix for dm multipath, a couple immutable biovec fixups for dm mirror, and a few dm-thin fixes. There will likely be additional dm-thin metadata and data resize fixes to include in 3.14-rc6 next week. Note to stable-minded folks: Immutable biovecs were introduced in 3.14, so the related fixups for dm mirror are not needed in stable@ kernels" * tag 'dm-3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm cache: fix truncation bug when mapping I/O to >2TB fast device dm thin: allow metadata space larger than supported to go unused dm mpath: fix stalls when handling invalid ioctls dm thin: fix the error path for the thin device constructor dm raid1: fix immutable biovec related BUG when retrying read bio dm io: fix I/O to multiple destinations dm thin: avoid metadata commit if a pool's thin devices haven't changed dm cache: do not add migration to completed list before unhooking bio dm cache: move hook_info into common portion of per_bio_data structure
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "It's a bad habit to get a higher volume of fixes often lately, but things happen again. All commits found here are real bug fixes, and are mostly trivial. Most of changes in ASoC are the fixes for enum items due to the wrong API usages, in addition to a few DAPM mutex deadlock and other fixes. In HD-audio, only fixups for HP laptops. Although diffstat shows much, the changes are simple: there are just so many different device entries there" * tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: sta32x: Fix wrong enum for limiter2 release rate ASoC: da732x: Mark DC offset control registers volatile ALSA: hda/realtek - Add more entry for enable HP mute led ALSA: hda - Add a fixup for HP Folio 13 mute LED ASoC: wm8958-dsp: Fix firmware block loading ASoC: sta32x: Fix cache sync ALSA: hda/realtek - Add more entry for enable HP mute led ASoC: dapm: Add locking to snd_soc_dapm_xxxx_pin functions Input - arizona-haptics: Fix double lock of dapm_mutex ASoC: wm8400: Fix the wrong number of enum items ASoC: isabelle: Fix the wrong number of items in enum ctls ASoC: ad1980: Fix wrong number of items for capture source ASoC: wm8994: Fix the wrong number of enum items ASoC: wm8900: Fix the wrong number of enum items ASoC: wm8770: Fix wrong number of enum items ASoC: sta32x: Fix array access overflow ASoC: dapm: Correct regulator bypass error messages
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull EDAC fixes from Borislav Petkov: "Two fixes below for PCI devices disappearing when a reference count underflow happens after a couple of insmod/rmmod cycles in succession" * tag 'edac_fixes_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: i7300_edac: Fix device reference count i7core_edac: Fix PCI device reference count
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fixes from Paolo Bonzini: "Three x86 fixes and one for ARM/ARM64. In particular, nested virtualization on Intel is broken in 3.13 and fixed by this pull request" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm, vmx: Really fix lazy FPU on nested guest kvm: x86: fix emulator buffer overflow (CVE-2014-0049) arm/arm64: KVM: detect CPU reset on CPU_PM_EXIT KVM: MMU: drop read-only large sptes when creating lower level sptes
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull ARM64 fixes from Catalin Marinas: - !CONFIG_SMP build fix - pte bit testing macros conversion fix (int truncates top bits of long) - stack unwinding PC calculation fix * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix !CONFIG_SMP kernel build arm64: mm: Add double logical invert to pte accessors ARM64: unwind: Fix PC calculation
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