/* * PS3 OHCI Host Controller driver * * Copyright (C) 2006 Sony Computer Entertainment Inc. * Copyright 2006 Sony Corp. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include static int ps3_ohci_hc_reset(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); ohci->flags |= OHCI_QUIRK_BE_MMIO; ohci_hcd_init(ohci); return ohci_init(ohci); } static int ps3_ohci_hc_start(struct usb_hcd *hcd) { int result; struct ohci_hcd *ohci = hcd_to_ohci(hcd); /* Handle root hub init quirk in spider south bridge. */ /* Also set PwrOn2PwrGood to 0x7f (254ms). */ ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM, &ohci->regs->roothub.a); ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b); result = ohci_run(ohci); if (result < 0) { dev_err(hcd->self.controller, "can't start %s\n", hcd->self.bus_name); ohci_stop(hcd); } return result; } static const struct hc_driver ps3_ohci_hc_driver = { .description = hcd_name, .product_desc = "PS3 OHCI Host Controller", .hcd_priv_size = sizeof(struct ohci_hcd), .irq = ohci_irq, .flags = HCD_MEMORY | HCD_USB11, .reset = ps3_ohci_hc_reset, .start = ps3_ohci_hc_start, .stop = ohci_stop, .shutdown = ohci_shutdown, .urb_enqueue = ohci_urb_enqueue, .urb_dequeue = ohci_urb_dequeue, .endpoint_disable = ohci_endpoint_disable, .get_frame_number = ohci_get_frame, .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, .start_port_reset = ohci_start_port_reset, #if defined(CONFIG_PM) .bus_suspend = ohci_bus_suspend, .bus_resume = ohci_bus_resume, #endif }; static int ps3_ohci_probe(struct ps3_system_bus_device *dev) { int result; struct usb_hcd *hcd; unsigned int virq; static u64 dummy_mask = DMA_BIT_MASK(32); if (usb_disabled()) { result = -ENODEV; goto fail_start; } result = ps3_open_hv_device(dev); if (result) { dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n", __func__, __LINE__, ps3_result(result)); result = -EPERM; goto fail_open; } result = ps3_dma_region_create(dev->d_region); if (result) { dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " "(%d)\n", __func__, __LINE__, result); BUG_ON("check region type"); goto fail_dma_region; } result = ps3_mmio_region_create(dev->m_region); if (result) { dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", __func__, __LINE__); result = -EPERM; goto fail_mmio_region; } dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, __LINE__, dev->m_region->lpar_addr); result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); if (result) { dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", __func__, __LINE__, virq); result = -EPERM; goto fail_irq; } dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core)); if (!hcd) { dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, __LINE__); result = -ENOMEM; goto fail_create_hcd; } hcd->rsrc_start = dev->m_region->lpar_addr; hcd->rsrc_len = dev->m_region->len; if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", __func__, __LINE__); hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); if (!hcd->regs) { dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, __LINE__); result = -EPERM; goto fail_ioremap; } dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, (unsigned long)hcd->rsrc_start); dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, (unsigned long)hcd->rsrc_len); dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, (unsigned long)hcd->regs); dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, (unsigned long)virq); ps3_system_bus_set_drvdata(dev, hcd); result = usb_add_hcd(hcd, virq, 0); if (result) { dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", __func__, __LINE__, result); goto fail_add_hcd; } device_wakeup_enable(hcd->self.controller); return result; fail_add_hcd: iounmap(hcd->regs); fail_ioremap: release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); fail_create_hcd: ps3_io_irq_destroy(virq); fail_irq: ps3_free_mmio_region(dev->m_region); fail_mmio_region: ps3_dma_region_free(dev->d_region); fail_dma_region: ps3_close_hv_device(dev); fail_open: fail_start: return result; } static int ps3_ohci_remove(struct ps3_system_bus_device *dev) { unsigned int tmp; struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); BUG_ON(!hcd); dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); tmp = hcd->irq; ohci_shutdown(hcd); usb_remove_hcd(hcd); ps3_system_bus_set_drvdata(dev, NULL); BUG_ON(!hcd->regs); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); ps3_io_irq_destroy(tmp); ps3_free_mmio_region(dev->m_region); ps3_dma_region_free(dev->d_region); ps3_close_hv_device(dev); return 0; } static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv) { return firmware_has_feature(FW_FEATURE_PS3_LV1) ? ps3_system_bus_driver_register(drv) : 0; } static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv) { if (firmware_has_feature(FW_FEATURE_PS3_LV1)) ps3_system_bus_driver_unregister(drv); } MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI); static struct ps3_system_bus_driver ps3_ohci_driver = { .core.name = "ps3-ohci-driver", .core.owner = THIS_MODULE, .match_id = PS3_MATCH_ID_OHCI, .probe = ps3_ohci_probe, .remove = ps3_ohci_remove, .shutdown = ps3_ohci_remove, }; 9ad8b3ce2d0'>diff)
drm/atomic: Fix double free in drm_atomic_state_default_clear
drm_atomic_helper_page_flip and drm_atomic_ioctl set their own events in crtc_state->event. But when it's set the event is freed in 2 places. Solve this by only freeing the event in the atomic ioctl when it allocated its own event. This has been broken twice. The first time when the code was introduced, but only in the corner case when an event is allocated, but more crtc's were included by atomic check and then failing. This can mostly happen when you do an atomic modeset in i915 and the display clock is changed, which forces all crtc's to be included to the state. This has been broken worse by adding in-fences support, which caused the double free to be done unconditionally. [IGT] kms_rotation_crc: starting subtest primary-rotation-180 ============================================================================= BUG kmalloc-128 (Tainted: G U ): Object already free ----------------------------------------------------------------------------- Disabling lock debugging due to kernel taint INFO: Allocated in drm_atomic_helper_setup_commit+0x285/0x2f0 [drm_kms_helper] age=0 cpu=3 pid=1529 ___slab_alloc+0x308/0x3b0 __slab_alloc+0xd/0x20 kmem_cache_alloc_trace+0x92/0x1c0 drm_atomic_helper_setup_commit+0x285/0x2f0 [drm_kms_helper] intel_atomic_commit+0x35/0x4f0 [i915] drm_atomic_commit+0x46/0x50 [drm] drm_mode_atomic_ioctl+0x7d4/0xab0 [drm] drm_ioctl+0x2b3/0x490 [drm] do_vfs_ioctl+0x69c/0x700 SyS_ioctl+0x4e/0x80 entry_SYSCALL_64_fastpath+0x13/0x94 INFO: Freed in drm_event_cancel_free+0xa3/0xb0 [drm] age=0 cpu=3 pid=1529 __slab_free+0x48/0x2e0 kfree+0x159/0x1a0 drm_event_cancel_free+0xa3/0xb0 [drm] drm_mode_atomic_ioctl+0x86d/0xab0 [drm] drm_ioctl+0x2b3/0x490 [drm] do_vfs_ioctl+0x69c/0x700 SyS_ioctl+0x4e/0x80 entry_SYSCALL_64_fastpath+0x13/0x94 INFO: Slab 0xffffde1f0997b080 objects=17 used=2 fp=0xffff92fb65ec2578 flags=0x200000000008101 INFO: Object 0xffff92fb65ec2578 @offset=1400 fp=0xffff92fb65ec2ae8 Redzone ffff92fb65ec2570: bb bb bb bb bb bb bb bb ........ Object ffff92fb65ec2578: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec2588: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec2598: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk. Redzone ffff92fb65ec25f8: bb bb bb bb bb bb bb bb ........ Padding ffff92fb65ec2738: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ CPU: 3 PID: 180 Comm: kworker/3:2 Tainted: G BU 4.10.0-rc6-patser+ #5039 Hardware name: /NUC5PPYB, BIOS PYBSWCEL.86A.0031.2015.0601.1712 06/01/2015 Workqueue: events intel_atomic_helper_free_state [i915] Call Trace: dump_stack+0x4d/0x6d print_trailer+0x20c/0x220 free_debug_processing+0x1c6/0x330 ? drm_atomic_state_default_clear+0xf7/0x1c0 [drm] __slab_free+0x48/0x2e0 ? drm_atomic_state_default_clear+0xf7/0x1c0 [drm] kfree+0x159/0x1a0 drm_atomic_state_default_clear+0xf7/0x1c0 [drm] ? drm_atomic_state_clear+0x30/0x30 [drm] intel_atomic_state_clear+0xd/0x20 [i915] drm_atomic_state_clear+0x1a/0x30 [drm] __drm_atomic_state_free+0x13/0x60 [drm] intel_atomic_helper_free_state+0x5d/0x70 [i915] process_one_work+0x260/0x4a0 worker_thread+0x2d1/0x4f0 kthread+0x127/0x130 ? process_one_work+0x4a0/0x4a0 ? kthread_stop+0x120/0x120 ret_from_fork+0x29/0x40 FIX kmalloc-128: Object at 0xffff92fb65ec2578 not freed Fixes: 3b24f7d67581 ("drm/atomic: Add struct drm_crtc_commit to track async updates") Fixes: 9626014258a5 ("drm/fence: add in-fences support") Cc: <stable@vger.kernel.org> # v4.8+ Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1485854725-27640-1-git-send-email-maarten.lankhorst@linux.intel.com
Diffstat (limited to 'drivers/usb/misc/emi62.c')