linux-stable.git/drivers/gpu/drm/msm, branch linux-5.0.y

drm/msm: Fix NULL pointer dereference

2019-05-31T13:45:04+00:00

[ Upstream commit 7603df38cc8c1e5d540b18ec9eb9d62d823197d0 ]

[    3.707412] Unable to handle kernel NULL pointer dereference at virtual address 0000009c
[    3.714511] pgd = (ptrval)
[    3.722742] [0000009c] *pgd=00000000
[    3.725238] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[    3.728968] Modules linked in:
[    3.734265] CPU: 3 PID: 112 Comm: kworker/3:2 Tainted: G        W         5.0.0-rc7-00183-g06a1c31df9eb #4
[    3.737142] Hardware name: Generic DT based system
[    3.746778] Workqueue: events deferred_probe_work_func
[    3.751542] PC is at msm_gem_map_vma+0x3c/0xac
[    3.756669] LR is at msm_gem_get_and_pin_iova+0xd8/0x134
[    3.761086] pc : []    lr : []    psr: 60000013
[    3.766560] sp : ee297be8  ip : ed9ab1c0  fp : ed93b800
[    3.772546] r10: ee35e180  r9 : 00000000  r8 : ee297c80
[    3.777752] r7 : 00000000  r6 : 7c100000  r5 : 00000000  r4 : ee35e180
[    3.782968] r3 : 00000001  r2 : 00000003  r1 : ee35e180  r0 : 00000000
[    3.789562] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    3.796079] Control: 10c5787d  Table: 2e3a806a  DAC: 00000051
[    3.803282] Process kworker/3:2 (pid: 112, stack limit = 0x(ptrval))
[    3.809006] Stack: (0xee297be8 to 0xee298000)
[    3.815445] 7be0:                   00000000 c1108c48 eda8c000 00000003 eda8c0fc c1108c48
[    3.819715] 7c00: eda8c000 00000003 eda8c0fc c07d14f8 00000001 c07d1100 7c100000 00000000
[    3.827873] 7c20: eda8c000 bb7ffb78 00000000 eda8c000 00000000 00000000 c0c8b1d4 ee3bfa00
[    3.836037] 7c40: ee3b9800 c07d1684 00000000 c1108c48 ee0d7810 ee3b9800 c0c8b1d4 c07d222c
[    3.844193] 7c60: ee3bfd84 ee297c80 00000000 c0b1d5b0 ee3bfc40 c07dcfd8 ee3bfd84 ee297c80
[    3.852357] 7c80: 0000006d ee3bfc40 ee0d7810 bb7ffb78 c0c8b1d4 00000000 ee3bfc40 c07ddb48
[    3.860516] 7ca0: 00002004 c0eba384 ee3bfc40 c079eba0 ee3bd040 ee3b9800 00000001 ed93b800
[    3.868673] 7cc0: ed9aa100 c07db7e8 ee3bf240 ed9a6500 00000001 ee3b9800 ee3bf2d4 c07a0a30
[    3.876834] 7ce0: ed93b800 7d100000 c1108c48 ee0d7610 ee3b9800 ed93b800 c1108c48 00000000
[    3.884991] 7d00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.893151] 7d20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 bb7ffb78
[    3.901310] 7d40: c12113c4 ed93b800 ee3b9800 c1108c48 ee9eec10 00000000 ed93b800 7d100000
[    3.909472] 7d60: eff7b000 c07cf748 7d100000 00000000 c0e9a350 c0b1d5b0 c12113c4 c0961e40
[    3.917633] 7d80: c12113c4 40000113 eeff4bec c0ebe004 00000019 c0b1d230 ee9eeda8 60000113
[    3.925791] 7da0: ee35d300 ee9eeda8 c07ce260 bb7ffb78 c07ce260 ee35d2c0 00000028 00000002
[    3.933950] 7dc0: eeb76280 c118f884 ee0be640 c11c6128 c07ce260 c07ea4ac 00000000 c0962b48
[    3.942108] 7de0: c118f868 00000001 c0ebbc98 ee35d2c0 00000000 eeb76280 00000000 c118f87c
[    3.950270] 7e00: ee35d2c0 00000000 c11c63e0 c118f694 00000019 c07ea5d0 ee0d7810 00000000
[    3.958430] 7e20: c118f694 00000000 00000000 c07f2b0c c120f55c ee0d7810 c120f560 00000000
[    3.966590] 7e40: 00000000 c07f08c4 c07f0e8c ee0d7810 c11ba3d0 ee0d7810 c118f694 c07f0e8c
[    3.974748] 7e60: c1108c48 00000001 c0ebc3cc c11c63f8 c11ba3d0 c07f0c08 00000001 c07f2f8c
[    3.982908] 7e80: c118f694 00000000 ee297ed4 c07f0e8c c1108c48 00000001 c0ebc3cc c11c63f8
[    3.991068] 7ea0: c11ba3d0 c07ee8a0 c11ba3d0 ee82686c ee0baf38 bb7ffb78 ee0d7810 ee0d7810
[    3.999227] 7ec0: c1108c48 ee0d7844 c118faac c07f05b0 ee0d7810 ee0d7810 00000001 bb7ffb78
[    4.007389] 7ee0: ee0d7810 ee0d7810 c118fd18 c118faac c11c63e0 c07ef7d0 ee0d7810 c118fa90
[    4.015548] 7f00: c118fa90 c07efd68 c118fac8 ee27fe00 eefd9c80 eefdcd00 00000000 c118facc
[    4.023708] 7f20: 00000000 c033c038 eefd9c80 eefd9c80 00000008 ee27fe00 ee27fe14 eefd9c80
[    4.031866] 7f40: 00000008 c1103d00 eefd9c98 ee296000 eefd9c80 c033ce54 ee907eac c0b1d230
[    4.040026] 7f60: ee907eac eea24440 ee285000 00000000 ee296000 ee27fe00 c033ce24 eea2445c
[    4.048188] 7f80: ee907eac c0341db0 00000000 ee285000 c0341c8c 00000000 00000000 00000000
[    4.056346] 7fa0: 00000000 00000000 00000000 c03010e8 00000000 00000000 00000000 00000000
[    4.064505] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    4.072665] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    4.080828] [] (msm_gem_map_vma) from [] (msm_gem_get_and_pin_iova+0xd8/0x134)
[    4.088983] [] (msm_gem_get_and_pin_iova) from [] (_msm_gem_kernel_new+0x38/0xac)
[    4.097839] [] (_msm_gem_kernel_new) from [] (msm_gem_kernel_new+0x24/0x2c)
[    4.107130] [] (msm_gem_kernel_new) from [] (dsi_tx_buf_alloc_6g+0x44/0x90)
[    4.115631] [] (dsi_tx_buf_alloc_6g) from [] (msm_dsi_host_modeset_init+0x80/0x104)
[    4.124313] [] (msm_dsi_host_modeset_init) from [] (msm_dsi_modeset_init+0x34/0x1c0)
[    4.133691] [] (msm_dsi_modeset_init) from [] (mdp5_kms_init+0x764/0x7e0)
[    4.143409] [] (mdp5_kms_init) from [] (msm_drm_bind+0x56c/0x740)
[    4.151824] [] (msm_drm_bind) from [] (try_to_bring_up_master+0x238/0x2b4)
[    4.159636] [] (try_to_bring_up_master) from [] (component_add+0xa8/0x170)
[    4.168146] [] (component_add) from [] (platform_drv_probe+0x48/0x9c)
[    4.176737] [] (platform_drv_probe) from [] (really_probe+0x278/0x404)
[    4.184981] [] (really_probe) from [] (driver_probe_device+0x78/0x1c0)
[    4.193147] [] (driver_probe_device) from [] (bus_for_each_drv+0x74/0xb8)
[    4.201389] [] (bus_for_each_drv) from [] (__device_attach+0xd0/0x164)
[    4.209984] [] (__device_attach) from [] (bus_probe_device+0x84/0x8c)
[    4.218143] [] (bus_probe_device) from [] (deferred_probe_work_func+0x48/0xc4)
[    4.226398] [] (deferred_probe_work_func) from [] (process_one_work+0x204/0x574)
[    4.235254] [] (process_one_work) from [] (worker_thread+0x30/0x560)
[    4.244534] [] (worker_thread) from [] (kthread+0x124/0x154)
[    4.252606] [] (kthread) from [] (ret_from_fork+0x14/0x2c)
[    4.259966] Exception stack(0xee297fb0 to 0xee297ff8)
[    4.266998] 7fa0:                                     00000000 00000000 00000000 00000000
[    4.272143] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    4.280297] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    4.288451] Code: e5813080 1a000013 e3a03001 e5c4307c (e590009c)
[    4.294933] ---[ end trace 18729cc2bca2b4b3 ]---

Signed-off-by: Luca Weiss 
Signed-off-by: Rob Clark 
Signed-off-by: Rob Clark 
Signed-off-by: Sasha Levin

drm/msm: dpu: Don't set frame_busy_mask for async updates

2019-05-31T13:45:03+00:00

[ Upstream commit f98baa3109cea46083d2361ab14a0207d1b1bd16 ]

The frame_busy mask is used in frame_done event handling, which is not
invoked for async commits. So an async commit will leave the
frame_busy mask populated after it completes and future commits will start
with the busy mask incorrect.

This showed up on disable after cursor move. I was hitting the "this should
not happen" comment in the frame event worker since frame_busy was set,
we queued the event, but there were no frames pending (since async
also doesn't set that).

Reviewed-by: Fritz Koenig 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/20190130163220.138637-1-sean@poorly.run
Signed-off-by: Rob Clark 
Signed-off-by: Sasha Levin

drm/msm: a5xx: fix possible object reference leak

2019-05-31T13:45:03+00:00

[ Upstream commit 6cd5235c3135ea84b32469ea51b2aae384eda8af ]

The call to of_get_child_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:57:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 47, but without a corresponding object release within this function.
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:66:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 47, but without a corresponding object release within this function.
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:118:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 47, but without a corresponding object release within this function.
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:57:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 51, but without a corresponding object release within this function.
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:66:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 51, but without a corresponding object release within this function.
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:118:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 51, but without a corresponding object release within this function.

Signed-off-by: Wen Yang 
Cc: Rob Clark 
Cc: Sean Paul 
Cc: David Airlie 
Cc: Daniel Vetter 
Cc: Jordan Crouse 
Cc: Mamta Shukla 
Cc: Thomas Zimmermann 
Cc: Sharat Masetty 
Cc: linux-arm-msm@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org (open list)
Reviewed-by: Jordan Crouse 
Signed-off-by: Rob Clark 
Signed-off-by: Rob Clark 
Signed-off-by: Sasha Levin

drm/msm/dpu: release resources on modeset failure

2019-05-31T13:45:03+00:00

[ Upstream commit a7fcc3237f31a4e206953bb73cf41bd429442f09 ]

release resources allocated in mode_set if any of
the hw check fails. Most of these checks are not
necessary and they will be removed in the follow up
patches with state based resource allocations.

Signed-off-by: Jeykumar Sankaran 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/1550107156-17625-4-git-send-email-jsanka@codeaurora.org
Signed-off-by: Rob Clark 
Signed-off-by: Sasha Levin

drm/msm/dpu: Convert to a chained irq chip

2019-04-05T20:34:44+00:00

[ Upstream commit 070e64dc1bbc879b7e0e9fffccd9dd139baf89f0 ]

Devices that make up DPU, i.e. graphics card, request their interrupts
from this "virtual" interrupt chip. The interrupt chip builds upon a GIC
SPI interrupt that raises high when any of the interrupts in the DPU's
irq status register are triggered. From the kernel's perspective this is
a chained irq chip, so requesting a flow handler for the GIC SPI and
then calling generic IRQ handling code from that irq handler is not
completely proper. It's better to convert this to a chained irq so that
the GIC SPI irq doesn't appear in /proc/interrupts, can't have CPU
affinity changed, and won't be accounted for with irq stats. Doing this
also silences a recursive lockdep warning because we can specify a
different lock class for the chained interrupts, silencing a warning
that is easy to see with 'threadirqs' on the kernel commandline.

 WARNING: inconsistent lock state
 4.19.10 #76 Tainted: G        W
 --------------------------------
 inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
 irq/40-dpu_mdss/203 [HC0[0]:SC0[2]:HE1:SE0] takes:
 0000000053ea9021 (&irq_desc_lock_class){?.-.}, at: handle_level_irq+0x34/0x26c
 {IN-HARDIRQ-W} state was registered at:
   lock_acquire+0x244/0x360
   _raw_spin_lock+0x64/0xa0
   handle_fasteoi_irq+0x54/0x2ec
   generic_handle_irq+0x44/0x5c
   __handle_domain_irq+0x9c/0x11c
   gic_handle_irq+0x208/0x260
   el1_irq+0xb4/0x130
   arch_cpu_idle+0x178/0x3cc
   default_idle_call+0x3c/0x54
   do_idle+0x1a8/0x3dc
   cpu_startup_entry+0x24/0x28
   rest_init+0x240/0x270
   start_kernel+0x5a8/0x6bc
 irq event stamp: 18
 hardirqs last  enabled at (17): [] _raw_spin_unlock_irq+0x40/0xc0
 hardirqs last disabled at (16): [] __schedule+0x20c/0x1bbc
 softirqs last  enabled at (0): [] copy_process+0xb50/0x3964
 softirqs last disabled at (18): [] local_bh_disable+0x8/0x20

 other info that might help us debug this:
  Possible unsafe locking scenario:

        CPU0
        ----
   lock(&irq_desc_lock_class);
   
     lock(&irq_desc_lock_class);

  *** DEADLOCK ***

 no locks held by irq/40-dpu_mdss/203.

 stack backtrace:
 CPU: 0 PID: 203 Comm: irq/40-dpu_mdss Tainted: G        W         4.19.10 #76
 Call trace:
  dump_backtrace+0x0/0x2f8
  show_stack+0x20/0x2c
  __dump_stack+0x20/0x28
  dump_stack+0xcc/0x10c
  mark_lock+0xbe0/0xe24
  __lock_acquire+0x4cc/0x2708
  lock_acquire+0x244/0x360
  _raw_spin_lock+0x64/0xa0
  handle_level_irq+0x34/0x26c
  generic_handle_irq+0x44/0x5c
  dpu_mdss_irq+0x64/0xec
  irq_forced_thread_fn+0x58/0x9c
  irq_thread+0x120/0x1dc
  kthread+0x248/0x260
  ret_from_fork+0x10/0x18
 ------------[ cut here ]------------
 irq 169 handler irq_default_primary_handler+0x0/0x18 enabled interrupts

Cc: Sean Paul 
Cc: Jordan Crouse 
Cc: Jayant Shekhar 
Cc: Rajesh Yadav 
Cc: Jeykumar Sankaran 
Signed-off-by: Stephen Boyd 
Signed-off-by: Sean Paul 
Signed-off-by: Sasha Levin

Merge tag 'drm-msm-fixes-2019-01-24' of git://people.freedesktop.org/~robclark/linux into drm-fixes

2019-01-24T21:45:00+00:00

A few fixes for v5.0.. the opp-level fix and removal of hard-coded irq
name is partially to make things smoother in v5.1 merge window to
avoid dependency on drm vs dt trees, but are otherwise sane changes.

Signed-off-by: Dave Airlie 
From: Rob Clark 
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGsAEHd2tGRQxRTs+A-8y_tthPs2iUgCCCEwR5vDMXab4A@mail.gmail.com

drm/msm: avoid unused function warning

2019-01-24T20:36:33+00:00

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c:368:13: error: 'dpu_plane_danger_signal_ctrl' defined but not used [-Werror=unused-function]

Fixes: 7b2e7adea732 ("drm/msm/dpu: Make dpu_plane_danger_signal_ctrl void")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Anders Roxell 
Signed-off-by: Rob Clark

drm/msm: Add __printf verification

2019-01-24T20:36:33+00:00

Add a few __printf attribute specifiers to routines that
could use them.

Signed-off-by: Joe Perches 
Signed-off-by: Rob Clark

drm/msm: Fix A6XX support for opp-level

2019-01-24T20:36:33+00:00

The bindings for Qualcomm opp levels changed after being Acked but
before landing.  Thus the code in the GPU driver that was relying on
the old bindings is now broken.

Let's change the code to match the new bindings by adjusting the old
string 'qcom,level' to the new string 'opp-level'.  See the patch
("dt-bindings: opp: Introduce opp-level bindings").

NOTE: we will do additional cleanup to totally remove the string from
the code and use the new dev_pm_opp_get_level() but we'll do it in a
future patch.  This will facilitate getting the important code fix in
sooner without having to deal with cross-maintainer dependencies.

This patch needs to land before the patch ("arm64: dts: sdm845: Add
gpu and gmu device nodes") since if a tree contains the device tree
patch but not this one you'll get a crash at bootup.

Fixes: 4b565ca5a2cb ("drm/msm: Add A6XX device support")
Signed-off-by: Douglas Anderson 
Reviewed-by: Jordan Crouse 
Signed-off-by: Rob Clark

drm/msm: honor GPU_READONLY flag

2019-01-24T20:36:33+00:00

Signed-off-by: Rob Clark