Linux v4.0-rc5-96-g3c435c1e472b
- Fixes hangs due to i915 issues (rhbz 1204050 1206056)
This commit is contained in:
Josh Boyer
parent
2aa3606074
commit
41c0069fbc
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@ -1,72 +0,0 @@
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From: Daniel Vetter <daniel.vetter@ffwll.ch>
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Date: Fri, 27 Feb 2015 12:58:13 +0100
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Subject: [PATCH] drm: Fixup racy refcounting in plane_force_disable
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Originally it was impossible to be dropping the last refcount in this
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function since there was always one around still from the idr. But in
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commit 83f45fc360c8e16a330474860ebda872d1384c8c
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Author: Daniel Vetter <daniel.vetter@ffwll.ch>
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Date: Wed Aug 6 09:10:18 2014 +0200
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drm: Don't grab an fb reference for the idr
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we've switched to weak references, broke that assumption but forgot to
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fix it up.
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Since we still force-disable planes it's only possible to hit this
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when racing multiple rmfb with fbdev restoring or similar evil things.
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As long as userspace is nice it's impossible to hit the BUG_ON.
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But the BUG_ON would most likely be hit from fbdev code, which usually
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invovles the console_lock besides all modeset locks. So very likely
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we'd never get the bug reports if this was hit in the wild, hence
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better be safe than sorry and backport.
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Spotted by Matt Roper while reviewing other patches.
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[airlied: pull this back into 4.0 - the oops happens there]
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Cc: stable@vger.kernel.org
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Cc: Matt Roper <matthew.d.roper@intel.com>
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Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
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Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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Signed-off-by: Dave Airlie <airlied@redhat.com>
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---
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drivers/gpu/drm/drm_crtc.c | 13 +------------
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1 file changed, 1 insertion(+), 12 deletions(-)
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diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
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index f6d04c7b5115..679b10e34fb5 100644
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--- a/drivers/gpu/drm/drm_crtc.c
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+++ b/drivers/gpu/drm/drm_crtc.c
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@@ -525,17 +525,6 @@ void drm_framebuffer_reference(struct drm_framebuffer *fb)
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}
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EXPORT_SYMBOL(drm_framebuffer_reference);
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-static void drm_framebuffer_free_bug(struct kref *kref)
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-{
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- BUG();
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-}
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-
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-static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
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-{
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- DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
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- kref_put(&fb->refcount, drm_framebuffer_free_bug);
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-}
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-
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/**
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* drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
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* @fb: fb to unregister
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@@ -1320,7 +1309,7 @@ void drm_plane_force_disable(struct drm_plane *plane)
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return;
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}
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/* disconnect the plane from the fb and crtc: */
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- __drm_framebuffer_unreference(plane->old_fb);
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+ drm_framebuffer_unreference(plane->old_fb);
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plane->old_fb = NULL;
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plane->fb = NULL;
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plane->crtc = NULL;
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--
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2.1.0
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@ -1,94 +0,0 @@
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From: Damien Lespiau <damien.lespiau@intel.com>
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Date: Thu, 5 Feb 2015 18:30:20 +0000
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Subject: [PATCH] drm/i915: Don't try to reference the fb in
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get_initial_plane_config()
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Tvrtko noticed a new warning on boot:
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WARNING: CPU: 1 PID: 353 at include/linux/kref.h:47 drm_framebuffer_reference+0x6c/0x80 [drm]()
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Call Trace:
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[<ffffffff8161f10c>] dump_stack+0x4f/0x7b
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[<ffffffff81052caa>] warn_slowpath_common+0xaa/0xd0
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[<ffffffff81052d8a>] warn_slowpath_null+0x1a/0x20
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[<ffffffffa00d035c>] drm_framebuffer_reference+0x6c/0x80 [drm]
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[<ffffffffa01c0df7>] update_state_fb.isra.54+0x47/0x50 [i915]
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[<ffffffffa01ccd5c>] skylake_get_initial_plane_config+0x93c/0x950 [i915]
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[<ffffffffa01e8721>] intel_modeset_init+0x1551/0x17c0 [i915]
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[<ffffffffa02476e0>] i915_driver_load+0xed0/0x11e0 [i915]
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[<ffffffff81627aa1>] ? _raw_spin_unlock_irqrestore+0x51/0x70
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[<ffffffffa00ca8b7>] drm_dev_register+0x77/0x110 [drm]
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[<ffffffffa00cda3b>] drm_get_pci_dev+0x11b/0x1f0 [drm]
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[<ffffffff81098e3d>] ? trace_hardirqs_on+0xd/0x10
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[<ffffffff81627aa1>] ? _raw_spin_unlock_irqrestore+0x51/0x70
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[<ffffffffa0145276>] i915_pci_probe+0x56/0x60 [i915]
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[<ffffffff813ad59c>] pci_device_probe+0x7c/0x100
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[<ffffffff81466aad>] driver_probe_device+0x16d/0x380
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We cannot take a reference at this point, not before
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intel_framebuffer_init() and the underlying drm_framebuffer_init().
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Introduced in:
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commit 706dc7b549175e47f23e913b7f1e52874a7d0f56
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Author: Matt Roper <matthew.d.roper@intel.com>
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Date: Tue Feb 3 13:10:04 2015 -0800
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drm/i915: Ensure plane->state->fb stays in sync with plane->fb
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v2: Don't move update_state_fb(). It was moved around because I
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originally put update_state_fb() in intel_alloc_plane_obj() before
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finding a better place. (Matt)
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Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
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Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Cc: Matt Roper <matthew.d.roper@intel.com>
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Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
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Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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---
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drivers/gpu/drm/i915/intel_display.c | 7 +++----
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1 file changed, 3 insertions(+), 4 deletions(-)
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diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
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index e116dee10cf9..177714a9d778 100644
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--- a/drivers/gpu/drm/i915/intel_display.c
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+++ b/drivers/gpu/drm/i915/intel_display.c
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@@ -2438,8 +2438,10 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc,
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if (!intel_crtc->base.primary->fb)
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return;
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- if (intel_alloc_plane_obj(intel_crtc, plane_config))
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+ if (intel_alloc_plane_obj(intel_crtc, plane_config)) {
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+ update_state_fb(intel_crtc->base.primary);
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return;
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+ }
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kfree(intel_crtc->base.primary->fb);
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intel_crtc->base.primary->fb = NULL;
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@@ -6663,7 +6665,6 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
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plane_config->size);
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crtc->base.primary->fb = fb;
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- update_state_fb(crtc->base.primary);
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}
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static void chv_crtc_clock_get(struct intel_crtc *crtc,
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@@ -7704,7 +7705,6 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
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plane_config->size);
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crtc->base.primary->fb = fb;
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- update_state_fb(crtc->base.primary);
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return;
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error:
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@@ -7798,7 +7798,6 @@ ironlake_get_initial_plane_config(struct intel_crtc *crtc,
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plane_config->size);
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crtc->base.primary->fb = fb;
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- update_state_fb(crtc->base.primary);
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}
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static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
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--
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2.1.0
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@ -1,61 +0,0 @@
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From: Damien Lespiau <damien.lespiau@intel.com>
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Date: Thu, 5 Feb 2015 19:24:25 +0000
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Subject: [PATCH] drm/i915: Fix atomic state when reusing the firmware fb
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Right now, we get a warning when taking over the firmware fb:
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[drm:drm_atomic_plane_check] FB set but no CRTC
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with the following backtrace:
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[<ffffffffa010339d>] drm_atomic_check_only+0x35d/0x510 [drm]
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[<ffffffffa0103567>] drm_atomic_commit+0x17/0x60 [drm]
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[<ffffffffa00a6ccd>] drm_atomic_helper_plane_set_property+0x8d/0xd0 [drm_kms_helper]
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[<ffffffffa00f1fed>] drm_mode_plane_set_obj_prop+0x2d/0x90 [drm]
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[<ffffffffa00a8a1b>] restore_fbdev_mode+0x6b/0xf0 [drm_kms_helper]
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[<ffffffffa00aa969>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
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[<ffffffffa00aa9e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
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[<ffffffffa050a71a>] intel_fbdev_set_par+0x1a/0x60 [i915]
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[<ffffffff813ad444>] fbcon_init+0x4f4/0x580
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That's because we update the plane state with the fb from the firmware, but we
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never associate the plane to that CRTC.
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We don't quite have the full DRM take over from HW state just yet, so
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fake enough of the plane atomic state to pass the checks.
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v2: Fix the state on which we set the CRTC in the case we're sharing the
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initial fb with another pipe. (Matt)
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Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
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Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
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Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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(Backported to 4.0-rc5)
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---
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drivers/gpu/drm/i915/intel_display.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
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index 177714a9d778..805b5e7b0058 100644
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--- a/drivers/gpu/drm/i915/intel_display.c
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+++ b/drivers/gpu/drm/i915/intel_display.c
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@@ -2439,6 +2439,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc,
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return;
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if (intel_alloc_plane_obj(intel_crtc, plane_config)) {
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+ intel_crtc->base.primary->state->crtc = &intel_crtc->base;
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update_state_fb(intel_crtc->base.primary);
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return;
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}
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@@ -2469,6 +2470,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc,
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drm_framebuffer_reference(c->primary->fb);
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intel_crtc->base.primary->fb = c->primary->fb;
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+ intel_crtc->base.primary->state->crtc = &intel_crtc->base;
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obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
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break;
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}
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--
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2.1.0
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@ -1,54 +0,0 @@
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From: Daniel Vetter <daniel.vetter@ffwll.ch>
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Date: Wed, 25 Mar 2015 18:30:38 +0100
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Subject: [PATCH] drm/i915: Fixup legacy plane->crtc link for initial fb config
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This is a very similar bug in the load detect code fixed in
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commit 9128b040eb774e04bc23777b005ace2b66ab2a85
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Author: Daniel Vetter <daniel.vetter@ffwll.ch>
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Date: Tue Mar 3 17:31:21 2015 +0100
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drm/i915: Fix modeset state confusion in the load detect code
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But this time around it was the initial fb code that forgot to update
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the plane->crtc pointer. Otherwise it's the exact same bug, with the
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exact same restrains (any set_config call/ioctl that doesn't disable
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the pipe papers over the bug for free, so fairly hard to hit in normal
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testing). So if you want the full explanation just go read that one
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over there - it's rather long ...
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Cc: Matt Roper <matthew.d.roper@intel.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>
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Cc: Chris Wilson <chris@chris-wilson.co.uk>
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Cc: Josh Boyer <jwboyer@fedoraproject.org>
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Cc: Jani Nikula <jani.nikula@linux.intel.com>
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Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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(Backported to 4.0-rc5)
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---
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drivers/gpu/drm/i915/intel_display.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
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index 805b5e7b0058..778e7fa41c17 100644
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--- a/drivers/gpu/drm/i915/intel_display.c
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+++ b/drivers/gpu/drm/i915/intel_display.c
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@@ -2440,6 +2440,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc,
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if (intel_alloc_plane_obj(intel_crtc, plane_config)) {
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intel_crtc->base.primary->state->crtc = &intel_crtc->base;
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+ intel_crtc->base.primary->crtc = &intel_crtc->base;
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update_state_fb(intel_crtc->base.primary);
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return;
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}
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@@ -2471,6 +2472,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc,
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drm_framebuffer_reference(c->primary->fb);
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intel_crtc->base.primary->fb = c->primary->fb;
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intel_crtc->base.primary->state->crtc = &intel_crtc->base;
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+ intel_crtc->base.primary->crtc = &intel_crtc->base;
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obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
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break;
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}
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--
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2.1.0
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@ -14,10 +14,10 @@ Upstream-status: http://lists.freedesktop.org/archives/intel-gfx/2013-November/0
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
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index 6d22128d97b1..e116dee10cf9 100644
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index f75173c20f47..1003782a38c4 100644
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--- a/drivers/gpu/drm/i915/intel_display.c
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+++ b/drivers/gpu/drm/i915/intel_display.c
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@@ -10909,7 +10909,7 @@ check_crtc_state(struct drm_device *dev)
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@@ -10917,7 +10917,7 @@ check_crtc_state(struct drm_device *dev)
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if (active &&
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!intel_pipe_config_compare(dev, crtc->config, &pipe_config)) {
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16
kernel.spec
16
kernel.spec
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@ -68,7 +68,7 @@ Summary: The Linux kernel
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# The rc snapshot level
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%define rcrev 5
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# The git snapshot level
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%define gitrev 3
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%define gitrev 4
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# Set rpm version accordingly
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%define rpmversion 4.%{upstream_sublevel}.0
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%endif
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@ -628,11 +628,6 @@ Patch26168: HID-multitouch-add-support-of-clickpads.patch
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Patch26170: acpi-video-Allow-forcing-native-backlight-on-non-win.patch
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Patch26171: acpi-video-Add-force-native-backlight-quirk-for-Leno.patch
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Patch26172: drm-Fixup-racy-refcounting-in-plane_force_disable.patch
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Patch26173: drm-i915-Don-t-try-to-reference-the-fb-in-get_initia.patch
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Patch26175: drm-i915-Fix-atomic-state-when-reusing-the-firmware-.patch
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Patch26176: drm-i915-Fixup-legacy-plane-crtc-link-for-initial-fb.patch
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#rhbz 1203584
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Patch26174: Input-ALPS-fix-max-coordinates-for-v5-and-v7-protoco.patch
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@ -1375,11 +1370,6 @@ ApplyPatch HID-multitouch-add-support-of-clickpads.patch
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ApplyPatch acpi-video-Allow-forcing-native-backlight-on-non-win.patch
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ApplyPatch acpi-video-Add-force-native-backlight-quirk-for-Leno.patch
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ApplyPatch drm-Fixup-racy-refcounting-in-plane_force_disable.patch
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ApplyPatch drm-i915-Don-t-try-to-reference-the-fb-in-get_initia.patch
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ApplyPatch drm-i915-Fix-atomic-state-when-reusing-the-firmware-.patch
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ApplyPatch drm-i915-Fixup-legacy-plane-crtc-link-for-initial-fb.patch
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#rhbz 1203584
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ApplyPatch Input-ALPS-fix-max-coordinates-for-v5-and-v7-protoco.patch
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@ -2233,6 +2223,10 @@ fi
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#
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#
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%changelog
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* Fri Mar 27 2015 Josh Boyer <jwboyer@fedoraproject.org> - 4.0.0-0.rc5.git4.1
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- Linux v4.0-rc5-96-g3c435c1e472b
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- Fixes hangs due to i915 issues (rhbz 1204050 1206056)
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* Thu Mar 26 2015 Josh Boyer <jwboyer@fedoraproject.org> - 4.0.0-0.rc5.git3.1
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- Linux v4.0-rc5-80-g4c4fe4c24782
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