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Marius Vlad [Wed, 13 Dec 2017 18:10:48 +0000 (20:10 +0200)]
drm/drm_lease: Prevent deadlock in case drm_lease_create() fails
This case can been seen when creating the lease with the same objects passed.
[ 605.515097] 2 locks held by testapp/3337:
[ 605.519027] #0: (&dev->mode_config.idr_mutex){......}, at: [<
ffff0000085f1664>] drm_mode_create_lease_ioctl+0x384/0x858
[ 605.530045] #1: (&dev->mode_config.idr_mutex){......}, at: [<
ffff0000085f11bc>] drm_lease_destroy+0x2c/0x110
Which was causing the process to hang:
[ 605.398827] [<
ffff0000080856cc>] __switch_to+0x94/0xa8
[ 605.404030] [<
ffff000008c05d00>] __schedule+0x1b0/0x698
[ 605.409322] [<
ffff000008c06224>] schedule+0x3c/0xa8
[ 605.414260] [<
ffff000008c06628>] schedule_preempt_disabled+0x20/0x38
[ 605.420677] [<
ffff000008c07370>] mutex_lock_nested+0x158/0x340
[ 605.426572] [<
ffff0000085f11bc>] drm_lease_destroy+0x2c/0x110
[ 605.432389] [<
ffff0000085cecf0>] drm_master_put+0xc0/0xc8
[ 605.437845] [<
ffff0000085f175c>] drm_mode_create_lease_ioctl+0x47c/0x858
[ 605.444612] [<
ffff0000085d4460>] drm_ioctl+0x198/0x448
[ 605.449811] [<
ffff000008201134>] do_vfs_ioctl+0xa4/0x748
[ 605.455192] [<
ffff000008201864>] SyS_ioctl+0x8c/0xa0
[ 605.460216] [<
ffff000008082f4c>] __sys_trace_return+0x0/0x4
drm_mode_create_lease_ioctl() calls drm_lease_create() which acquires a lock
on dev->mode_config.idr_mutex. In case of failure, drm_lease_create() calls
drm_master_put() which in turn tries to acquire the same lock when calling
drm_lease_destroy().
v2: - Reverse the order at exit in case of fail, so that unlocking takes place
before dropping the reference.
- Include detail information about deadlock (Daniel Vetter)
Signed-off-by: Marius Vlad <marius-cristian.vlad@nxp.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213181048.32719-1-marius-cristian.vlad@nxp.com
Daniel Vetter [Wed, 13 Dec 2017 12:49:36 +0000 (13:49 +0100)]
drm: rework delayed connector cleanup in connector_iter
PROBE_DEFER also uses system_wq to reprobe drivers, which means when
that again fails, and we try to flush the overall system_wq (to get
all the delayed connectore cleanup work_struct completed), we
deadlock.
Fix this by using just a single cleanup work, so that we can only
flush that one and don't block on anything else. That means a free
list plus locking, a standard pattern.
v2:
- Correctly free connectors only on last ref. Oops (Chris).
- use llist_head/node (Chris).
v3
- Add init_llist_head (Chris).
Fixes:
a703c55004e1 ("drm: safely free connectors from connector_iter")
Fixes:
613051dac40d ("drm: locking&new iterators for connector_list")
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: <stable@vger.kernel.org> # v4.11+: 613051dac40d ("drm: locking&new iterators for connector_list"
Cc: <stable@vger.kernel.org> # v4.11+
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Guillaume Tucker <guillaume.tucker@collabora.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matt Hart <matthew.hart@linaro.org>
Cc: Thierry Escande <thierry.escande@collabora.co.uk>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213124936.17914-1-daniel.vetter@ffwll.ch
Keith Packard [Wed, 13 Dec 2017 08:44:26 +0000 (00:44 -0800)]
drm: Update edid-derived drm_display_info fields at edid property set [v2]
There are a set of values in the drm_display_info structure for each
connector which hold information derived from EDID. These are computed
in drm_add_display_info. Before this patch, that was only called in
drm_add_edid_modes. This meant that they were only set when EDID was
present and never reset when EDID was not, as happened when the
display was disconnected.
One of these fields, non_desktop, is used from
drm_mode_connector_update_edid_property, the function responsible for
assigning the new edid value to the application-visible property.
Various drivers call these two functions (drm_add_edid_modes and
drm_mode_connector_update_edid_property) in different orders. This
means that even when EDID is present, the drm_display_info fields may
not have been computed at the time that
drm_mode_connector_update_edid_property used the non_desktop value to
set the non_desktop property.
I've added a public function (drm_reset_display_info) that resets the
drm_display_info field values to default values and then made the
drm_add_display_info function public. These two functions are now
called directly from drm_mode_connector_update_edid_property so that
the drm_display_info fields are always computed from the current EDID
information before being used in that function.
This means that the drm_display_info values are often computed twice,
once when the EDID property it set and a second time when EDID is used
to compute modes for the device. The alternative would be to uniformly
ensure that the values were computed once before being used, which
would require that all drivers reliably invoke the two paths in the
same order. The computation is inexpensive enough that it seems more
maintainable in the long term to simply compute them in both paths.
The API to drm_add_display_info has been changed so that it no longer
takes the set of edid-based quirks as a parameter. Rather, it now
computes those quirks itself and returns them for further use by
drm_add_edid_modes.
This patch also includes a number of 'const' additions caused by
drm_mode_connector_update_edid_property taking a 'const struct edid *'
parameter and wanting to pass that along to drm_add_display_info.
v2: after review by Daniel Vetter <daniel.vetter@ffwll.ch>
Removed EXPORT_SYMBOL_GPL for drm_reset_display_info and
drm_add_display_info.
Added FIXME in drm_mode_connector_update_edid_property about
potentially merging that with drm_add_edid_modes to avoid
the need for two driver calls.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213084427.31199-1-keithp@keithp.com
(danvet: cherry picked from commit
12a889bf4bca ("drm: rework delayed
connector cleanup in connector_iter") from drm-misc-next since
functional conflict with changes in -next and we need to make sure
both have the right version and nothing gets lost.)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Stefan Schake [Sat, 2 Dec 2017 17:40:39 +0000 (18:40 +0100)]
drm/vc4: Release fence after signalling
We were never releasing the initial fence reference that is obtained
through dma_fence_init.
Link: https://github.com/anholt/linux/issues/122
Fixes:
cdec4d361323 ("drm/vc4: Expose dma-buf fences for V3D rendering.")
Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1512236444-301-1-git-send-email-stschake@gmail.com
Dave Airlie [Thu, 7 Dec 2017 22:17:53 +0000 (08:17 +1000)]
Merge tag 'drm-misc-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
regression fix for vc4 + rpm stable fix for analogix bridge
* tag 'drm-misc-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-misc:
drm/bridge: analogix dp: Fix runtime PM state in get_modes() callback
drm/vc4: Fix false positive WARN() backtrace on refcount_inc() usage
Dave Airlie [Thu, 7 Dec 2017 22:17:09 +0000 (08:17 +1000)]
Merge tag 'drm-intel-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix for fd.o bug #103997 CNL eDP + HDMI causing a machine hard hang (James)
- Fix to allow suspending with a wedged GPU to hopefully unwedge it (Chris)
- Fix for Gen2 vblank timestap/frame counter jumps (Ville)
- Revert of a W/A for enabling FBC on CNL/GLK for certain images
and sizes (Rodrigo)
- Lockdep fix for i915 userptr code (Chris)
gvt-fixes-2017-12-06
- Fix invalid hw reg read value for vGPU (Xiong)
- Fix qemu warning on PCI ROM bar missing (Changbin)
- Workaround preemption regression (Zhenyu)
* tag 'drm-intel-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-intel:
Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
drm/i915: Call i915_gem_init_userptr() before taking struct_mutex
drm/i915/gvt: set max priority for gvt context
drm/i915/gvt: Don't mark vgpu context as inactive when preempted
drm/i915/gvt: Limit read hw reg to active vgpu
drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
drm/i915/gvt: Emulate PCI expansion ROM base address register
drm/i915/cnl: Mask previous DDI - PLL mapping
drm/i915: Fix vblank timestamp/frame counter jumps on gen2
drm/i915: Skip switch-to-kernel-context on suspend when wedged
Dave Airlie [Thu, 7 Dec 2017 22:15:09 +0000 (08:15 +1000)]
Merge tag 'exynos-drm-fixes-for-v4.15-rc3' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes
- fix page fault issue due to using wrong device object in prime import.
- drop NONCONTIG flag without IOMMU support.
- remove unnecessary members and declaration.
* tag 'exynos-drm-fixes-for-v4.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: remove unnecessary function declaration
drm/exynos: remove unnecessary descrptions
drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
drm/exynos: Fix dma-buf import
Marek Szyprowski [Tue, 21 Nov 2017 07:49:36 +0000 (08:49 +0100)]
drm/bridge: analogix dp: Fix runtime PM state in get_modes() callback
get_modes() callback might be called asynchronously from the DRM core and
it is not synchronized with bridge_enable(), which sets proper runtime PM
state of the main DP device. Fix this by calling pm_runtime_get_sync()
before calling drm_get_edid(), which in turn calls drm_dp_i2c_xfer() and
analogix_dp_transfer() to ensure that main DP device is runtime active
when doing any access to its registers.
This fixes the following kernel issue on Samsung Exynos5250 Snow board:
Unhandled fault: imprecise external abort (0x406) at 0x00000000
pgd =
c0004000
[
00000000] *pgd=
00000000
Internal error: : 406 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 62 Comm: kworker/0:2 Not tainted
4.13.0-rc2-00364-g4a97a3da420b #3357
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
Workqueue: events output_poll_execute
task:
edc14800 task.stack:
edcb2000
PC is at analogix_dp_transfer+0x15c/0x2fc
LR is at analogix_dp_transfer+0x134/0x2fc
pc : [<
c0468538>] lr : [<
c0468510>] psr:
60000013
sp :
edcb3be8 ip :
0000002a fp :
00000001
r10:
00000000 r9 :
edcb3cd8 r8 :
edcb3c40
r7 :
00000000 r6 :
edd3b380 r5 :
edd3b010 r4 :
00000064
r3 :
00000000 r2 :
f0ad3000 r1 :
edcb3c40 r0 :
edd3b010
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control:
10c5387d Table:
4000406a DAC:
00000051
Process kworker/0:2 (pid: 62, stack limit = 0xedcb2210)
Stack: (0xedcb3be8 to 0xedcb4000)
[<
c0468538>] (analogix_dp_transfer) from [<
c0424ba4>] (drm_dp_i2c_do_msg+0x8c/0x2b4)
[<
c0424ba4>] (drm_dp_i2c_do_msg) from [<
c0424e64>] (drm_dp_i2c_xfer+0x98/0x214)
[<
c0424e64>] (drm_dp_i2c_xfer) from [<
c057b2d8>] (__i2c_transfer+0x140/0x29c)
[<
c057b2d8>] (__i2c_transfer) from [<
c057b4a4>] (i2c_transfer+0x70/0xe4)
[<
c057b4a4>] (i2c_transfer) from [<
c0441de4>] (drm_do_probe_ddc_edid+0xb4/0x114)
[<
c0441de4>] (drm_do_probe_ddc_edid) from [<
c0441e5c>] (drm_probe_ddc+0x18/0x28)
[<
c0441e5c>] (drm_probe_ddc) from [<
c0445728>] (drm_get_edid+0x124/0x2d4)
[<
c0445728>] (drm_get_edid) from [<
c0465ea0>] (analogix_dp_get_modes+0x90/0x114)
[<
c0465ea0>] (analogix_dp_get_modes) from [<
c0425e8c>] (drm_helper_probe_single_connector_modes+0x198/0x68c)
[<
c0425e8c>] (drm_helper_probe_single_connector_modes) from [<
c04325d4>] (drm_setup_crtcs+0x1b4/0xd18)
[<
c04325d4>] (drm_setup_crtcs) from [<
c04344a8>] (drm_fb_helper_hotplug_event+0x94/0xd0)
[<
c04344a8>] (drm_fb_helper_hotplug_event) from [<
c0425a50>] (drm_kms_helper_hotplug_event+0x24/0x28)
[<
c0425a50>] (drm_kms_helper_hotplug_event) from [<
c04263ec>] (output_poll_execute+0x6c/0x174)
[<
c04263ec>] (output_poll_execute) from [<
c0136f18>] (process_one_work+0x188/0x3fc)
[<
c0136f18>] (process_one_work) from [<
c01371f4>] (worker_thread+0x30/0x4b8)
[<
c01371f4>] (worker_thread) from [<
c013daf8>] (kthread+0x128/0x164)
[<
c013daf8>] (kthread) from [<
c0108510>] (ret_from_fork+0x14/0x24)
Code:
0a000002 ea000009 e2544001 0a00004a (
e59537c8)
---[ end trace
cddc7919c79f7878 ]---
Reported-by: Misha Komarovskiy <zombah@gmail.com>
CC: stable@vger.kernel.org # v4.10+
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20171121074936.22520-1-m.szyprowski@samsung.com
Joonas Lahtinen [Thu, 7 Dec 2017 11:35:32 +0000 (13:35 +0200)]
Merge tag 'gvt-fixes-2017-12-06' of https://github.com/intel/gvt-linux into drm-intel-fixes
gvt-fixes-2017-12-06
- Fix invalid hw reg read value for vGPU (Xiong)
- Fix qemu warning on PCI ROM bar missing (Changbin)
- Workaround preemption regression (Zhenyu)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171206075105.wlh2ojubjczlstox@zhen-hp.sh.intel.com
Radhakrishna Sripada [Wed, 6 Dec 2017 22:25:07 +0000 (14:25 -0800)]
Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
This reverts commit
8f067837c4b713ce2e69be95af7b2a5eb3bd7de8.
HSD says "WA withdrawn. It was causing corruption with some images.
WA is not strictly necessary since this bug just causes loss of FBC
compression with some sizes and images, but doesn't break anything."
Fixes:
8f067837c4b7 ("drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171117010825.23118-1-radhakrishna.sripada@intel.com
(cherry picked from commit
0cfecb7c4b9b45ed1776162e132b43f92564f3f4)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Boris Brezillon [Wed, 22 Nov 2017 20:39:28 +0000 (21:39 +0100)]
drm/vc4: Fix false positive WARN() backtrace on refcount_inc() usage
With CONFIG_REFCOUNT_FULL enabled, refcount_inc() complains when it's
passed a refcount object that has its counter set to 0. In this driver,
this is a valid use case since we want to increment ->usecnt only when
the BO object starts to be used by real HW components and this is
definitely not the case when the BO is created.
Fix the problem by using refcount_inc_not_zero() instead of
refcount_inc() and fallback to refcount_set(1) when
refcount_inc_not_zero() returns false. Note that this 2-steps operation
is not racy here because the whole section is protected by a mutex
which guarantees that the counter does not change between the
refcount_inc_not_zero() and refcount_set() calls.
Fixes:
b9f19259b84d ("drm/vc4: Add the DRM_IOCTL_VC4_GEM_MADVISE ioctl")
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20171122203928.28135-1-boris.brezillon@free-electrons.com
Chris Wilson [Wed, 22 Nov 2017 17:26:21 +0000 (17:26 +0000)]
drm/i915: Call i915_gem_init_userptr() before taking struct_mutex
We don't need struct_mutex to initialise userptr (it just allocates a
workqueue for itself etc), but we do need struct_mutex later on in
i915_gem_init() in order to feed requests onto the HW.
This should break the chain
[ 385.697902] ======================================================
[ 385.697907] WARNING: possible circular locking dependency detected
[ 385.697913] 4.14.0-CI-Patchwork_7234+ #1 Tainted: G U
[ 385.697917] ------------------------------------------------------
[ 385.697922] perf_pmu/2631 is trying to acquire lock:
[ 385.697927] (&mm->mmap_sem){++++}, at: [<
ffffffff811bfe1e>] __might_fault+0x3e/0x90
[ 385.697941]
but task is already holding lock:
[ 385.697946] (&cpuctx_mutex){+.+.}, at: [<
ffffffff8116fe8c>] perf_event_ctx_lock_nested+0xbc/0x1d0
[ 385.697957]
which lock already depends on the new lock.
[ 385.697963]
the existing dependency chain (in reverse order) is:
[ 385.697970]
-> #4 (&cpuctx_mutex){+.+.}:
[ 385.697980] __mutex_lock+0x86/0x9b0
[ 385.697985] perf_event_init_cpu+0x5a/0x90
[ 385.697991] perf_event_init+0x178/0x1a4
[ 385.697997] start_kernel+0x27f/0x3f1
[ 385.698003] verify_cpu+0x0/0xfb
[ 385.698006]
-> #3 (pmus_lock){+.+.}:
[ 385.698015] __mutex_lock+0x86/0x9b0
[ 385.698020] perf_event_init_cpu+0x21/0x90
[ 385.698025] cpuhp_invoke_callback+0xca/0xc00
[ 385.698030] _cpu_up+0xa7/0x170
[ 385.698035] do_cpu_up+0x57/0x70
[ 385.698039] smp_init+0x62/0xa6
[ 385.698044] kernel_init_freeable+0x97/0x193
[ 385.698050] kernel_init+0xa/0x100
[ 385.698055] ret_from_fork+0x27/0x40
[ 385.698058]
-> #2 (cpu_hotplug_lock.rw_sem){++++}:
[ 385.698068] cpus_read_lock+0x39/0xa0
[ 385.698073] apply_workqueue_attrs+0x12/0x50
[ 385.698078] __alloc_workqueue_key+0x1d8/0x4d8
[ 385.698134] i915_gem_init_userptr+0x5f/0x80 [i915]
[ 385.698176] i915_gem_init+0x7c/0x390 [i915]
[ 385.698213] i915_driver_load+0x99e/0x15c0 [i915]
[ 385.698250] i915_pci_probe+0x33/0x90 [i915]
[ 385.698256] pci_device_probe+0xa1/0x130
[ 385.698262] driver_probe_device+0x293/0x440
[ 385.698267] __driver_attach+0xde/0xe0
[ 385.698272] bus_for_each_dev+0x5c/0x90
[ 385.698277] bus_add_driver+0x16d/0x260
[ 385.698282] driver_register+0x57/0xc0
[ 385.698287] do_one_initcall+0x3e/0x160
[ 385.698292] do_init_module+0x5b/0x1fa
[ 385.698297] load_module+0x2374/0x2dc0
[ 385.698302] SyS_finit_module+0xaa/0xe0
[ 385.698307] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 385.698311]
-> #1 (&dev->struct_mutex){+.+.}:
[ 385.698320] __mutex_lock+0x86/0x9b0
[ 385.698361] i915_mutex_lock_interruptible+0x4c/0x130 [i915]
[ 385.698403] i915_gem_fault+0x206/0x760 [i915]
[ 385.698409] __do_fault+0x1a/0x70
[ 385.698413] __handle_mm_fault+0x7c4/0xdb0
[ 385.698417] handle_mm_fault+0x154/0x300
[ 385.698440] __do_page_fault+0x2d6/0x570
[ 385.698445] page_fault+0x22/0x30
[ 385.698449]
-> #0 (&mm->mmap_sem){++++}:
[ 385.698459] lock_acquire+0xaf/0x200
[ 385.698464] __might_fault+0x68/0x90
[ 385.698470] _copy_to_user+0x1e/0x70
[ 385.698475] perf_read+0x1aa/0x290
[ 385.698480] __vfs_read+0x23/0x120
[ 385.698484] vfs_read+0xa3/0x150
[ 385.698488] SyS_read+0x45/0xb0
[ 385.698493] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 385.698497]
other info that might help us debug this:
[ 385.698505] Chain exists of:
&mm->mmap_sem --> pmus_lock --> &cpuctx_mutex
[ 385.698517] Possible unsafe locking scenario:
[ 385.698522] CPU0 CPU1
[ 385.698526] ---- ----
[ 385.698529] lock(&cpuctx_mutex);
[ 385.698553] lock(pmus_lock);
[ 385.698558] lock(&cpuctx_mutex);
[ 385.698564] lock(&mm->mmap_sem);
[ 385.698568]
*** DEADLOCK ***
[ 385.698574] 1 lock held by perf_pmu/2631:
[ 385.698578] #0: (&cpuctx_mutex){+.+.}, at: [<
ffffffff8116fe8c>] perf_event_ctx_lock_nested+0xbc/0x1d0
[ 385.698589]
stack backtrace:
[ 385.698595] CPU: 3 PID: 2631 Comm: perf_pmu Tainted: G U 4.14.0-CI-Patchwork_7234+ #1
[ 385.698602] Hardware name: /NUC6CAYB, BIOS AYAPLCEL.86A.0040.2017.0619.1722 06/19/2017
[ 385.698609] Call Trace:
[ 385.698615] dump_stack+0x5f/0x86
[ 385.698621] print_circular_bug.isra.18+0x1d0/0x2c0
[ 385.698627] __lock_acquire+0x19c3/0x1b60
[ 385.698634] ? generic_exec_single+0x77/0xe0
[ 385.698640] ? lock_acquire+0xaf/0x200
[ 385.698644] lock_acquire+0xaf/0x200
[ 385.698650] ? __might_fault+0x3e/0x90
[ 385.698655] __might_fault+0x68/0x90
[ 385.698660] ? __might_fault+0x3e/0x90
[ 385.698665] _copy_to_user+0x1e/0x70
[ 385.698670] perf_read+0x1aa/0x290
[ 385.698675] __vfs_read+0x23/0x120
[ 385.698682] ? __fget+0x101/0x1f0
[ 385.698686] vfs_read+0xa3/0x150
[ 385.698691] SyS_read+0x45/0xb0
[ 385.698696] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 385.698701] RIP: 0033:0x7ff1c46876ed
[ 385.698705] RSP: 002b:
00007fff13552f90 EFLAGS:
00000293 ORIG_RAX:
0000000000000000
[ 385.698712] RAX:
ffffffffffffffda RBX:
ffffc90000647ff0 RCX:
00007ff1c46876ed
[ 385.698718] RDX:
0000000000000010 RSI:
00007fff13552fa0 RDI:
0000000000000005
[ 385.698723] RBP:
000056063d300580 R08:
0000000000000000 R09:
0000000000000060
[ 385.698729] R10:
0000000000000000 R11:
0000000000000293 R12:
0000000000000046
[ 385.698734] R13:
00007fff13552c6f R14:
00007ff1c6279d00 R15:
00007ff1c6279a40
Testcase: igt/perf_pmu
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171122172621.16158-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
(cherry picked from commit
ee48700dd57d9ce783ec40f035b324d0b75632e4)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Inki Dae [Thu, 23 Nov 2017 09:27:57 +0000 (18:27 +0900)]
drm/exynos: remove unnecessary function declaration
Removed exynos_drm_get_dma_device funtion declaration on top
of exynos_drm_drv.c file.
We can remove this declaration by moving the implementation
of this function upwards.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Inki Dae [Thu, 23 Nov 2017 09:32:06 +0000 (18:32 +0900)]
drm/exynos: remove unnecessary descrptions
Removed two descriptions to 'da_start' and 'da_space_size'
from exynos_drm_private structure.
These members don't exist anymore.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Marek Szyprowski [Wed, 22 Nov 2017 13:14:47 +0000 (14:14 +0100)]
drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
When no IOMMU is available, all GEM buffers allocated by Exynos DRM driver
are contiguous, because of the underlying dma_alloc_attrs() function
provides only such buffers. In such case it makes no sense to keep
BO_NONCONTIG flag for the allocated GEM buffers. This allows to avoid
failures for buffer contiguity checks in the subsequent operations on GEM
objects.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
CC: stable@vger.kernel.org # v4.4+
Marek Szyprowski [Mon, 30 Oct 2017 07:28:09 +0000 (08:28 +0100)]
drm/exynos: Fix dma-buf import
When IOMMU support was enabled, dma-buf import in Exynos DRM was broken
since commit
f43c35966a5a ("drm/exynos: use real device for DMA-mapping
operations") due to using wrong struct device in drm_gem_prime_import()
function. This patch fixes following kernel BUG caused by incorrect buffer
mapping to DMA address space:
exynos-sysmmu
14650000.sysmmu:
14450000.mixer: PAGE FAULT occurred at 0xb2e00000
------------[ cut here ]------------
kernel BUG at drivers/iommu/exynos-iommu.c:449!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.14.0-rc4-next-20171016-00033-g990d723669fd #3165
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
task:
c0e0b7c0 task.stack:
c0e00000
PC is at exynos_sysmmu_irq+0x1d0/0x24c
LR is at exynos_sysmmu_irq+0x154/0x24c
------------[ cut here ]------------
Reported-by: Marian Mihailescu <mihailescu2m@gmail.com>
Fixes:
f43c35966a5a ("drm/exynos: use real device for DMA-mapping operations")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Dave Airlie [Wed, 6 Dec 2017 22:29:26 +0000 (08:29 +1000)]
Merge tag 'drm-misc-fixes-2017-12-06' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Just the connector_iter corner-case regression fix.
* tag 'drm-misc-fixes-2017-12-06' of git://anongit.freedesktop.org/drm/drm-misc:
drm: safely free connectors from connector_iter
Dave Airlie [Wed, 6 Dec 2017 20:27:13 +0000 (06:27 +1000)]
Merge branch 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
ttm and license fixes
* 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux:
drm/ttm: swap consecutive allocated pooled pages v4
drm/ttm: swap consecutive allocated cached pages v3
drm/ttm: roundup the shrink request to prevent skip huge pool
drm/ttm: add page order support in ttm_pages_put
drm/ttm: add set_pages_wb for handling page order more than zero
drm/ttm: add page order in page pool
drm/ttm: use NUM_PAGES_TO_ALLOC always
drm/amdgpu: add license to files where it was missing
drm/amdgpu: add license to Makefiles
Christian König [Mon, 4 Dec 2017 10:26:14 +0000 (11:26 +0100)]
drm/ttm: swap consecutive allocated pooled pages v4
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.
v2: use swap
v3: check if it's really the first allocated page
v4: don't touch the loop variable
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Daniel Vetter [Mon, 4 Dec 2017 20:48:18 +0000 (21:48 +0100)]
drm: safely free connectors from connector_iter
In
commit
613051dac40da1751ab269572766d3348d45a197
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Dec 14 00:08:06 2016 +0100
drm: locking&new iterators for connector_list
we've went to extreme lengths to make sure connector iterations works
in any context, without introducing any additional locking context.
This worked, except for a small fumble in the implementation:
When we actually race with a concurrent connector unplug event, and
our temporary connector reference turns out to be the final one, then
everything breaks: We call the connector release function from
whatever context we happen to be in, which can be an irq/atomic
context. And connector freeing grabs all kinds of locks and stuff.
Fix this by creating a specially safe put function for connetor_iter,
which (in this rare case) punts the cleanup to a worker.
Reported-by: Ben Widawsky <ben@bwidawsk.net>
Cc: Ben Widawsky <ben@bwidawsk.net>
Fixes:
613051dac40d ("drm: locking&new iterators for connector_list")
Cc: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: <stable@vger.kernel.org> # v4.11+
Reviewed-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171204204818.24745-1-daniel.vetter@ffwll.ch
Zhenyu Wang [Mon, 4 Dec 2017 02:42:58 +0000 (10:42 +0800)]
drm/i915/gvt: set max priority for gvt context
This is to workaround guest driver hang regression after
preemption enable that gvt hasn't enabled handling of that
for guest workload. So in effect this disables preemption
for gvt context now.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
(cherry picked from commit
1603660b3342269c95fcafee1945790342a8c28e)
Zhenyu Wang [Fri, 1 Dec 2017 06:59:53 +0000 (14:59 +0800)]
drm/i915/gvt: Don't mark vgpu context as inactive when preempted
We shouldn't mark inactive for vGPU context if preempted,
which would still be re-scheduled later. So keep active state.
Fixes:
d6c0511300dc ("drm/i915/execlists: Distinguish the incomplete context notifies")
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
(cherry picked from commit
da5f99eaccc10e30bf82eb02b1be74703b878720)
Xiong Zhang [Mon, 6 Nov 2017 21:23:02 +0000 (05:23 +0800)]
drm/i915/gvt: Limit read hw reg to active vgpu
mmio_read_from_hw() let vgpu could read hw reg, if vgpu's workload
is running on hw, things is good. Otherwise vgpu will get other
vgpu's reg val, it is unsafe.
This patch limit such hw access to active vgpu. If vgpu isn't
running on hw, the reg read of this vgpu will get the last active
val which saved at schedule_out.
v2: ring timestamp is walking continuously even if the ring is idle.
so read hw directly. (Zhenyu)
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
(cherry picked from commit
295764cd2ff41e2c1bc8af4050de77cec5e7a1c0)
Zhi Wang [Sat, 30 Sep 2017 09:42:20 +0000 (17:42 +0800)]
drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
Since many emulation logic needs to convert the offset of ring registers
into ring id, we export it for other caller which might need it.
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
(cherry picked from commit
62a6a53786fc4b4e7543cc63b704dbb3f7df4c0f)
Changbin Du [Thu, 2 Nov 2017 05:33:42 +0000 (13:33 +0800)]
drm/i915/gvt: Emulate PCI expansion ROM base address register
Our vGPU doesn't have a device ROM, we need follow the PCI spec to
report this info to drivers. Otherwise, we would see below errors.
Inspecting possible rom at 0xfe049000 (vd=8086:1912 bdf=00:10.0)
qemu-system-x86_64: vfio-pci: Cannot read device rom at
00000000-0000-0000-0000-
000000000001
Device option ROM contents are probably invalid (check dmesg).
Skip option ROM probe with rombar=0, or load from file with romfile=No option rom signature (got 4860)
I will also send a improvement patch to PCI subsystem related to PCI ROM.
But no idea to omit below error, since no pattern to detect vbios shadow
without touch its content.
0000:00:10.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x0000
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
(cherry picked from commit
c4270d122ccff963a021d1beb893d6192336af96)
Christian König [Mon, 4 Dec 2017 10:17:54 +0000 (11:17 +0100)]
drm/ttm: swap consecutive allocated cached pages v3
When we detect consecutive allocation of pages swap them to avoid
accidentally freeing them as huge page.
v2: use swap
v3: check if it's really the first allocated page
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Tue, 21 Nov 2017 08:47:16 +0000 (16:47 +0800)]
drm/ttm: roundup the shrink request to prevent skip huge pool
e.g. shrink reqeust is less than 512, the logic will skip huge pool
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Tue, 21 Nov 2017 06:24:48 +0000 (14:24 +0800)]
drm/ttm: add page order support in ttm_pages_put
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Wed, 22 Nov 2017 07:09:33 +0000 (15:09 +0800)]
drm/ttm: add set_pages_wb for handling page order more than zero
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Tue, 21 Nov 2017 01:37:52 +0000 (09:37 +0800)]
drm/ttm: add page order in page pool
to indicate page order for each element in the pool
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Tue, 21 Nov 2017 01:58:26 +0000 (09:58 +0800)]
drm/ttm: use NUM_PAGES_TO_ALLOC always
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
James Ausmus [Fri, 1 Dec 2017 02:17:00 +0000 (18:17 -0800)]
drm/i915/cnl: Mask previous DDI - PLL mapping
Without masking out the old value, we can end up pointing the DDI to a
disabled PLL, which makes the system fall over. Mask out the previous
value before setting the PLL to DDI mapping.
This can be observed by running igt/testdisplay with both an eDP and
HDMI/DP output active.
v2: Add the Bugzilla link
Fixes:
555e38d273172 ("drm/i915/cnl: DDI - PLL mapping")
Testcase: igt/testdisplay
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103997
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201021700.13504-1-james.ausmus@intel.com
(cherry picked from commit
23a7068ec581fcc6fb61039448632d25987b1fae)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Ville Syrjälä [Wed, 29 Nov 2017 15:37:30 +0000 (17:37 +0200)]
drm/i915: Fix vblank timestamp/frame counter jumps on gen2
Previously I was under the impression that the scanline counter
reads 0 when the pipe is off. Turns out that's not correct, and
instead the scanline counter simply stops when the pipe stops, and
it retains it's last value until the pipe starts up again, at which
point the scanline counter jumps to vblank start.
These jumps can cause the timestamp to jump backwards by one frame.
Since we use the timestamps to guesstimage also the frame counter
value on gen2, that would cause the frame counter to also jump
backwards, which leads to a massice difference from the previous value.
The end result is that flips/vblank events don't appear to complete as
they're stuck waiting for the frame counter to catch up to that massive
difference.
Fix the problem properly by actually making sure the scanline counter
has started to move before we assume that it's safe to enable vblank
processing.
v2: Less pointless duplication in the code (Chris)
Cc: stable@vger.kernel.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Fixes:
b7792d8b54cc ("drm/i915: Wait for pipe to start before sampling vblank timestamps on gen2")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171129153732.3612-1-ville.syrjala@linux.intel.com
(cherry picked from commit
8fedd64dabc86d0f31a0d1e152be3aa23c323553)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Chris Wilson [Thu, 30 Nov 2017 10:29:51 +0000 (10:29 +0000)]
drm/i915: Skip switch-to-kernel-context on suspend when wedged
If the HW is already wedged, attempting to submit a request will
generate an -EIO. If we tried this during suspend, we would abort
whereas all we want to do is to go sleep and throw away the corrupt
state.
Fixes:
5ab57c702069 ("drm/i915: Flush logical context image out to memory upon suspend")
Testcase: igt/gem_eio/suspend
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171130102951.14965-1-chris@chris-wilson.co.uk
(cherry picked from commit
ecf73eb2d27d43b2153bb80671768a06d35521f1)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Alex Deucher [Fri, 1 Dec 2017 02:29:47 +0000 (21:29 -0500)]
drm/amdgpu: add license to files where it was missing
These files were missing it before.
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Fri, 1 Dec 2017 02:15:50 +0000 (21:15 -0500)]
drm/amdgpu: add license to Makefiles
Was missing license text.
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linus Torvalds [Sun, 3 Dec 2017 16:01:47 +0000 (11:01 -0500)]
Linux 4.15-rc2
Linus Torvalds [Sun, 3 Dec 2017 15:51:08 +0000 (10:51 -0500)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fix from Russell King:
"Just one fix this time around, for the late commit in the merge window
that triggered a problem with qemu. Qemu is apparently also going to
receive a fix for the discovered issue"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: avoid faulting on qemu
Linus Torvalds [Sun, 3 Dec 2017 15:48:24 +0000 (10:48 -0500)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Here are two bugfixes for I2C, fixing a memleak in the core and irq
allocation for i801.
Also three bugfixes for the at24 eeprom driver which Bartosz collected
while taking over maintainership for this driver"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
eeprom: at24: check at24_read/write arguments
eeprom: at24: fix reading from 24MAC402/24MAC602
eeprom: at24: correctly set the size for at24mac402
i2c: i2c-boardinfo: fix memory leaks on devinfo
i2c: i801: Fix Failed to allocate irq -
2147483648 error
Linus Torvalds [Sun, 3 Dec 2017 15:46:16 +0000 (10:46 -0500)]
Merge tag 'hwmon-for-linus-v4.15-rc2' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Fixes:
- Drop reference to obsolete maintainer tree
- Fix overflow bug in pmbus driver
- Fix SMBUS timeout problem in jc42 driver
For the SMBUS timeout handling, we had a brief discussion if this
should be considered a bug fix or a feature. Peter says "it fixes real
problems where the application misbehave due to faulty content when
reading from an eeprom", and he needs the patch in his company's v4.14
images. This is good enough for me and warrants backport to stable
kernels"
* tag 'hwmon-for-linus-v4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (jc42) optionally try to disable the SMBUS timeout
hwmon: (pmbus) Use 64bit math for DIRECT format values
hwmon: Drop reference to Jean's tree
Wolfram Sang [Sat, 2 Dec 2017 22:32:13 +0000 (23:32 +0100)]
Merge tag 'at24-4.15-fixes-for-wolfram' of git://git./linux/kernel/git/brgl/linux into i2c/for-current
Please consider pulling the following fixes for v4.15. While it doesn't
fix any regression introduced in the v4.15 merge window, we have a
feature in at24 since linux v4.8 - reading the mac address block from
at24mac series - which turned out to be not working.
This pull request contains changes that fix it together with a patch
that hardens the read and write argument sanitization with
out-of-bounds checks that were missing.
Linus Torvalds [Sat, 2 Dec 2017 01:04:20 +0000 (20:04 -0500)]
Merge tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:
"These patches fix a problem with compiling using an old version of
gcc, and also fix up error handling in the SUNRPC layer.
- NFSv4: Ensure gcc 4.4.4 can compile initialiser for
"invalid_stateid"
- SUNRPC: Allow connect to return EHOSTUNREACH
- SUNRPC: Handle ENETDOWN errors"
* tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
SUNRPC: Handle ENETDOWN errors
SUNRPC: Allow connect to return EHOSTUNREACH
NFSv4: Ensure gcc 4.4.4 can compile initialiser for "invalid_stateid"
Linus Torvalds [Sat, 2 Dec 2017 01:00:19 +0000 (20:00 -0500)]
Merge tag 'xfs-4.15-fixes-4' of git://git./fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Here are some bug fixes for 4.15-rc2.
- fix memory leaks that appeared after removing ifork inline data
buffer
- recover deferred rmap update log items in correct order
- fix memory leaks when buffer construction fails
- fix memory leaks when bmbt is corrupt
- fix some uninitialized variables and math problems in the quota
scrubber
- add some omitted attribution tags on the log replay commit
- fix some UBSAN complaints about integer overflows with large sparse
files
- implement an effective inode mode check in online fsck
- fix log's inability to retry quota item writeout due to transient
errors"
* tag 'xfs-4.15-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: Properly retry failed dquot items in case of error during buffer writeback
xfs: scrub inode mode properly
xfs: remove unused parameter from xfs_writepage_map
xfs: ubsan fixes
xfs: calculate correct offset in xfs_scrub_quota_item
xfs: fix uninitialized variable in xfs_scrub_quota
xfs: fix leaks on corruption errors in xfs_bmap.c
xfs: fortify xfs_alloc_buftarg error handling
xfs: log recovery should replay deferred ops in order
xfs: always free inline data before resetting inode fork during ifree
Linus Torvalds [Sat, 2 Dec 2017 00:39:12 +0000 (19:39 -0500)]
Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git./linux/kernel/git/palmer/linux
Pull RISC-V cleanups and ABI fixes from Palmer Dabbelt:
"This contains a handful of small cleanups that are a result of
feedback that didn't make it into our original patch set, either
because the feedback hadn't been given yet, I missed the original
emails, or we weren't ready to submit the changes yet.
I've been maintaining the various cleanup patch sets I have as their
own branches, which I then merged together and signed. Each merge
commit has a short summary of the changes, and each branch is based on
your latest tag (4.15-rc1, in this case). If this isn't the right way
to do this then feel free to suggest something else, but it seems sane
to me.
Here's a short summary of the changes, roughly in order of how
interesting they are.
- libgcc.h has been moved from include/lib, where it's the only
member, to include/linux. This is meant to avoid tab completion
conflicts.
- VDSO entries for clock_get/gettimeofday/getcpu have been added.
These are simple syscalls now, but we want to let glibc use them
from the start so we can make them faster later.
- A VDSO entry for instruction cache flushing has been added so
userspace can flush the instruction cache.
- The VDSO symbol versions for __vdso_cmpxchg{32,64} have been
removed, as those VDSO entries don't actually exist.
- __io_writes has been corrected to respect the given type.
- A new READ_ONCE in arch_spin_is_locked().
- __test_and_op_bit_ord() is now actually ordered.
- Various small fixes throughout the tree to enable allmodconfig to
build cleanly.
- Removal of some dead code in our atomic support headers.
- Improvements to various comments in our atomic support headers"
* tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux: (23 commits)
RISC-V: __io_writes should respect the length argument
move libgcc.h to include/linux
RISC-V: Clean up an unused include
RISC-V: Allow userspace to flush the instruction cache
RISC-V: Flush I$ when making a dirty page executable
RISC-V: Add missing include
RISC-V: Use define for get_cycles like other architectures
RISC-V: Provide stub of setup_profiling_timer()
RISC-V: Export some expected symbols for modules
RISC-V: move empty_zero_page definition to C and export it
RISC-V: io.h: type fixes for warnings
RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros
RISC-V: use generic serial.h
RISC-V: remove spin_unlock_wait()
RISC-V: `sfence.vma` orderes the instruction cache
RISC-V: Add READ_ONCE in arch_spin_is_locked()
RISC-V: __test_and_op_bit_ord should be strongly ordered
RISC-V: Remove smb_mb__{before,after}_spinlock()
RISC-V: Remove __smp_bp__{before,after}_atomic
RISC-V: Comment on why {,cmp}xchg is ordered how it is
...
Linus Torvalds [Sat, 2 Dec 2017 00:37:03 +0000 (19:37 -0500)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The critical one here is a fix for fpsimd register corruption across
signals which was introduced by the SVE support code (the register
files overlap), but the others are worth having as well.
Summary:
- Fix FP register corruption when SVE is not available or in use
- Fix out-of-tree module build failure when CONFIG_ARM64_MODULE_PLTS=y
- Missing 'const' generating errors with LTO builds
- Remove unsupported events from Cortex-A73 PMU description
- Removal of stale and incorrect comments"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: context: Fix comments and remove pointless smp_wmb()
arm64: cpu_ops: Add missing 'const' qualifiers
arm64: perf: remove unsupported events for Cortex-A73
arm64: fpsimd: Fix failure to restore FPSIMD state after signals
arm64: pgd: Mark pgd_cache as __ro_after_init
arm64: ftrace: emit ftrace-mod.o contents through code
arm64: module-plts: factor out PLT generation code for ftrace
arm64: mm: cleanup stale AIVIVT references
Palmer Dabbelt [Fri, 1 Dec 2017 21:31:31 +0000 (13:31 -0800)]
RISC-V: Fixes for clean allmodconfig build
Olaf said: Here's a short series of patches that produces a working
allmodconfig. Would be nice to see them go in so we can add build
coverage.
I've dropped patches 8 and 10 from the original set:
* [PATCH 08/10] (RISC-V: Set __ARCH_WANT_RENAMEAT to pick up generic
version) has a better fix that I've sent out for review, we don't want
renameat.
* [PATCH 10/10] (input: joystick: riscv has get_cycles) has already been
taken into Dmitry Torokhov's tree.
Palmer Dabbelt [Fri, 1 Dec 2017 21:16:15 +0000 (13:16 -0800)]
move libgcc.h to include/linux
Palmer Dabbelt [Fri, 1 Dec 2017 21:14:36 +0000 (13:14 -0800)]
RISC-V: __io_writes should respect the length argument
Palmer Dabbelt [Fri, 1 Dec 2017 21:12:10 +0000 (13:12 -0800)]
RISC-V: User-Visible Changes
This merge contains the user-visible, ABI-breaking changes that we want
to make sure we have in Linux before our first release. Highlights
include:
* VDSO entries for clock_get/gettimeofday/getcpu have been added. These
are simple syscalls now, but we want to let glibc use them from the
start so we can make them faster later.
* A VDSO entry for instruction cache flushing has been added so
userspace can flush the instruction cache.
* The VDSO symbol versions for __vdso_cmpxchg{32,64} have been removed,
as those VDSO entries don't actually exist.
Conflicts:
arch/riscv/include/asm/tlbflush.h
Palmer Dabbelt [Fri, 1 Dec 2017 21:10:42 +0000 (13:10 -0800)]
RISC-V Atomic Cleanups
This patch set is the result of some feedback that filtered through
after our original patch set was reviewed, some of which was the result
of me missing some email. It contains:
* A new READ_ONCE in arch_spin_is_locked()
* __test_and_op_bit_ord() is now actually ordered
* Improvements to various comments
* Removal of some dead code
Palmer Dabbelt [Tue, 28 Nov 2017 22:15:32 +0000 (14:15 -0800)]
RISC-V: __io_writes should respect the length argument
Whoops -- I must have just been being an idiot again. Thanks to Segher
for finding the bug :).
CC: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Christoph Hellwig [Wed, 22 Nov 2017 10:47:28 +0000 (11:47 +0100)]
move libgcc.h to include/linux
Introducing a new include/lib directory just for this file totally
messes up tab completion for include/linux, which is highly annoying.
Move it to include/linux where we have headers for all kinds of other
lib/ code as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Linus Torvalds [Fri, 1 Dec 2017 13:40:17 +0000 (08:40 -0500)]
Merge tag 'powerpc-4.15-3' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Two fixes for nasty kexec/kdump crashes in certain configurations.
A couple of minor fixes for the new TIDR code.
A fix for an oops in a CXL error handling path.
Thanks to: Andrew Donnellan, Christophe Lombard, David Gibson, Mahesh
Salgaonkar, Vaibhav Jain"
* tag 'powerpc-4.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Do not assign thread.tidr if already assigned
powerpc: Avoid signed to unsigned conversion in set_thread_tidr()
powerpc/kexec: Fix kexec/kdump in P9 guest kernels
powerpc/powernv: Fix kexec crashes caused by tlbie tracing
cxl: Check if vphb exists before iterating over AFU devices
Linus Torvalds [Fri, 1 Dec 2017 13:36:27 +0000 (08:36 -0500)]
Merge tag 'afs-fixes-
20171201' of git://git./linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
"Two fix patches for the AFS filesystem:
- Fix the refcounting on permit caching.
- AFS inode (afs_vnode) fields need resetting after allocation
because they're only initialised when slab pages are obtained from
the page allocator"
* tag 'afs-fixes-
20171201' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Properly reset afs_vnode (inode) fields
afs: Fix permit refcounting
Linus Torvalds [Fri, 1 Dec 2017 13:14:22 +0000 (08:14 -0500)]
Merge tag 'mmc-v4.15-2' of git://git./linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Ensure that debugfs files are removed properly
- Fix missing blk_put_request()
- Deal with errors from blk_get_request()
- Rewind mmc bus suspend operations at failures
- Prepend '0x' to ocr and pre_eol_info in sysfs to identify as hex
MMC host:
- sdhci-msm: Make it optional to wait for signal level changes
- sdhci: Avoid swiotlb buffer being full"
* tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: core: prepend 0x to OCR entry in sysfs
mmc: core: prepend 0x to pre_eol_info entry in sysfs
mmc: sdhci: Avoid swiotlb buffer being full
mmc: sdhci-msm: Optionally wait for signal level changes
mmc: block: Ensure that debugfs files are removed
mmc: core: Do not leave the block driver in a suspended state
mmc: block: Check return value of blk_get_request()
mmc: block: Fix missing blk_put_request()
Linus Torvalds [Fri, 1 Dec 2017 13:10:09 +0000 (08:10 -0500)]
Merge tag 'drm-fixes-for-v4.15-rc2' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes and cleanups from Dave Airlie:
"The main thing are a bunch of fixes for the new amd display code, a
bunch of smatch fixes.
core:
- Atomic helper regression fix.
- Deferred fbdev fallout regression fix.
amdgpu:
- New display code (dc) dpms, suspend/resume and smatch fixes, along
with some others
- Some regression fixes for amdkfd/radeon.
- Fix a ttm regression for swiotlb disabled
bridge:
- A bunch of fixes for the tc358767 bridge
mali-dp + hdlcd:
- some fixes and internal API catchups.
imx-drm:
-regression fix in atomic code.
omapdrm:
- platform detection regression fixes"
* tag 'drm-fixes-for-v4.15-rc2' of git://people.freedesktop.org/~airlied/linux: (76 commits)
drm/imx: always call wait_for_flip_done in commit_tail
omapdrm: hdmi4_cec: signedness bug in hdmi4_cec_init()
drm: omapdrm: Fix DPI on platforms using the DSI VDDS
omapdrm: hdmi4: Correct the SoC revision matching
drm/omap: displays: panel-dpi: add backlight dependency
drm/omap: Fix error handling path in 'omap_dmm_probe()'
drm/i915: Disable THP until we have a GPU read BW W/A
drm/bridge: tc358767: fix 1-lane behavior
drm/bridge: tc358767: fix AUXDATAn registers access
drm/bridge: tc358767: fix timing calculations
drm/bridge: tc358767: fix DP0_MISC register set
drm/bridge: tc358767: filter out too high modes
drm/bridge: tc358767: do no fail on hi-res displays
drm/bridge: Fix lvds-encoder since the panel_bridge rework.
drm/bridge: synopsys/dw-hdmi: Enable cec clock
drm/bridge: adv7511/33: Fix adv7511_cec_init() failure handling
drm/radeon: remove init of CIK VMIDs 8-16 for amdkfd
drm/ttm: fix populate_and_map() functions once more
drm/fb_helper: Disable all crtc's when initial setup fails.
drm/atomic: make drm_atomic_helper_wait_for_vblanks more agressive
...
Linus Torvalds [Fri, 1 Dec 2017 13:05:45 +0000 (08:05 -0500)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A selection of fixes/changes that should make it into this series.
This contains:
- NVMe, two merges, containing:
- pci-e, rdma, and fc fixes
- Device quirks
- Fix for a badblocks leak in null_blk
- bcache fix from Rui Hua for a race condition regression where
-EINTR was returned to upper layers that didn't expect it.
- Regression fix for blktrace for a bug introduced in this series.
- blktrace cleanup for cgroup id.
- bdi registration error handling.
- Small series with cleanups for blk-wbt.
- Various little fixes for typos and the like.
Nothing earth shattering, most important are the NVMe and bcache fixes"
* 'for-linus' of git://git.kernel.dk/linux-block: (34 commits)
nvme-pci: fix NULL pointer dereference in nvme_free_host_mem()
nvme-rdma: fix memory leak during queue allocation
blktrace: fix trace mutex deadlock
nvme-rdma: Use mr pool
nvme-rdma: Check remotely invalidated rkey matches our expected rkey
nvme-rdma: wait for local invalidation before completing a request
nvme-rdma: don't complete requests before a send work request has completed
nvme-rdma: don't suppress send completions
bcache: check return value of register_shrinker
bcache: recover data from backing when data is clean
bcache: Fix building error on MIPS
bcache: add a comment in journal bucket reading
nvme-fc: don't use bit masks for set/test_bit() numbers
blk-wbt: fix comments typo
blk-wbt: move wbt_clear_stat to common place in wbt_done
blk-sysfs: remove NULL pointer checking in queue_wb_lat_store
blk-wbt: remove duplicated setting in wbt_init
nvme-pci: add quirk for delay before CHK RDY for WDC SN200
block: remove useless assignment in bio_split
null_blk: fix dev->badblocks leak
...
Will Deacon [Thu, 30 Nov 2017 18:25:17 +0000 (18:25 +0000)]
arm64: context: Fix comments and remove pointless smp_wmb()
The comments in the ASID allocator incorrectly hint at an MP-style idiom
using the asid_generation and the active_asids array. In fact, the
synchronisation is achieved using a combination of an xchg operation
and a spinlock, so update the comments and remove the pointless smp_wmb().
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Yury Norov [Wed, 29 Nov 2017 14:03:03 +0000 (17:03 +0300)]
arm64: cpu_ops: Add missing 'const' qualifiers
Building the kernel with an LTO-enabled GCC spits out the following "const"
warning for the cpu_ops code:
mm/percpu.c:2168:20: error: pcpu_fc_names causes a section type conflict
with dt_supported_cpu_ops
const char * const pcpu_fc_names[PCPU_FC_NR] __initconst = {
^
arch/arm64/kernel/cpu_ops.c:34:37: note: ‘dt_supported_cpu_ops’ was declared here
static const struct cpu_operations *dt_supported_cpu_ops[] __initconst = {
Fix it by adding missed const qualifiers.
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Xu YiPing [Wed, 15 Nov 2017 07:39:26 +0000 (15:39 +0800)]
arm64: perf: remove unsupported events for Cortex-A73
bus access read/write events are not supported in A73, based on the
Cortex-A73 TRM r0p2, section 11.9 Events (pages 11-457 to 11-460).
Fixes:
5561b6c5e981 "arm64: perf: add support for Cortex-A73"
Acked-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Xu YiPing <xuyiping@hisilicon.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Dave Martin [Thu, 30 Nov 2017 11:56:37 +0000 (11:56 +0000)]
arm64: fpsimd: Fix failure to restore FPSIMD state after signals
The fpsimd_update_current_state() function is responsible for
loading the FPSIMD state from the user signal frame into the
current task during sigreturn. When implementing support for SVE,
conditional code was added to this function in order to handle the
case where SVE state need to be loaded for the task and merged with
the FPSIMD data from the signal frame; however, the FPSIMD-only
case was unintentionally dropped.
As a result of this, sigreturn does not currently restore the
FPSIMD state of the task, except in the case where the system
supports SVE and the signal frame contains SVE state in addition to
FPSIMD state.
This patch fixes this bug by making the copy-in of the FPSIMD data
from the signal frame to thread_struct unconditional.
This remains a performance regression from v4.14, since the FPSIMD
state is now copied into thread_struct and then loaded back,
instead of _only_ being loaded into the CPU FPSIMD registers.
However, it is essential to call task_fpsimd_load() here anyway in
order to ensure that the SVE enable bit in CPACR_EL1 is set
correctly before returning to userspace. This could use some
refactoring, but since sigreturn is not a fast path I have kept
this patch as a pure fix and left the refactoring for later.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes:
8cd969d28fd2 ("arm64/sve: Signal handling support")
Reported-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Jinbum Park [Wed, 22 Nov 2017 12:43:59 +0000 (21:43 +0900)]
arm64: pgd: Mark pgd_cache as __ro_after_init
pgd_cache is setup once while init stage and never changed after
that, so it is good candidate for __ro_after_init
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Ard Biesheuvel [Mon, 20 Nov 2017 17:41:30 +0000 (17:41 +0000)]
arm64: ftrace: emit ftrace-mod.o contents through code
When building the arm64 kernel with both CONFIG_ARM64_MODULE_PLTS and
CONFIG_DYNAMIC_FTRACE enabled, the ftrace-mod.o object file is built
with the kernel and contains a trampoline that is linked into each
module, so that modules can be loaded far away from the kernel and
still reach the ftrace entry point in the core kernel with an ordinary
relative branch, as is emitted by the compiler instrumentation code
dynamic ftrace relies on.
In order to be able to build out of tree modules, this object file
needs to be included into the linux-headers or linux-devel packages,
which is undesirable, as it makes arm64 a special case (although a
precedent does exist for 32-bit PPC).
Given that the trampoline essentially consists of a PLT entry, let's
not bother with a source or object file for it, and simply patch it
in whenever the trampoline is being populated, using the existing
PLT support routines.
Cc: <stable@vger.kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Ard Biesheuvel [Mon, 20 Nov 2017 17:41:29 +0000 (17:41 +0000)]
arm64: module-plts: factor out PLT generation code for ftrace
To allow the ftrace trampoline code to reuse the PLT entry routines,
factor it out and move it into asm/module.h.
Cc: <stable@vger.kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
David Howells [Fri, 1 Dec 2017 11:40:43 +0000 (11:40 +0000)]
afs: Properly reset afs_vnode (inode) fields
When an AFS inode is allocated by afs_alloc_inode(), the allocated
afs_vnode struct isn't necessarily reset from the last time it was used as
an inode because the slab constructor is only invoked once when the memory
is obtained from the page allocator.
This means that information can leak from one inode to the next because
we're not calling kmem_cache_zalloc(). Some of the information isn't
reset, in particular the permit cache pointer.
Bring the clearances up to date.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
David Howells [Fri, 1 Dec 2017 11:40:43 +0000 (11:40 +0000)]
afs: Fix permit refcounting
Fix four refcount bugs in afs_cache_permit():
(1) When checking the result of the kzalloc(), we can't just return, but
must put 'permits'.
(2) We shouldn't put permits immediately after hashing a new permit as we
need to keep the pointer stable so that we can check to see if
vnode->permit_cache has changed before we decide whether to assign to
it.
(3) 'permits' is being put twice.
(4) We need to put either the replacement or the thing replaced after the
assignment to vnode->permit_cache.
Without this, lots of the following are seen:
Kernel BUG at
ffffffffa039857b [verbose debug info unavailable]
------------[ cut here ]------------
Kernel BUG at
ffffffffa039858a [verbose debug info unavailable]
------------[ cut here ]------------
The addresses are in the .text..refcount section of the kafs.ko module.
Following the relocation records for the __ex_table section shows one to be
due to the decrement in afs_put_permits() and the other to be key_get() in
afs_cache_permit().
Occasionally, the following is seen:
refcount_t overflow at afs_cache_permit+0x57d/0x5c0 [kafs] in cc1[562], uid/euid: 0/0
WARNING: CPU: 0 PID: 562 at kernel/panic.c:657 refcount_error_report+0x9c/0xac
...
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
Linus Torvalds [Thu, 30 Nov 2017 23:56:41 +0000 (18:56 -0500)]
Merge tag 'apparmor-pr-2017-11-30' of git://git./linux/kernel/git/jj/linux-apparmor
Pull apparmor bugfix from John Johansen:
"Fix oops in audit_signal_cb hook marked for stable"
* tag 'apparmor-pr-2017-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
apparmor: fix oops in audit_signal_cb hook
Linus Torvalds [Thu, 30 Nov 2017 23:49:50 +0000 (18:49 -0500)]
Merge tag 'acpi-4.15-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a regression related to the ACPI EC handling during system
suspend/resume on some platforms and prevent modalias from being
exposed to user space for ACPI device object with "not functional and
not present" status.
Specifics:
- Fix an ACPI EC driver regression (from the 4.9 cycle) causing the
driver's power management operations to be omitted during system
suspend/resume on platforms where the EC instance from the ECDT
table is used instead of the one from the DSDT (Lv Zheng).
- Prevent modalias from being exposed to user space for ACPI device
objects with _STA returning 0 (not present and not functional) to
prevent driver modules from being loaded automatically for hardware
that is not actually present on some platforms (Hans de Goede)"
* tag 'acpi-4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / EC: Fix regression related to PM ops support in ECDT device
ACPI / bus: Leave modalias empty for devices which are not present
Linus Torvalds [Thu, 30 Nov 2017 23:45:55 +0000 (18:45 -0500)]
Merge tag 'pm-4.15-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
- add missing module information to the Mediatek cpufreq driver module
(Jesse Chan)
- fix config dependencies for the Loongson cpufreq driver (James Hogan)
- fix two issues related to CPU offline in the cpupower utility
(Abhishek Goel).
* tag 'pm-4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: mediatek: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
cpufreq: Add Loongson machine dependencies
cpupower : Fix cpupower working when cpu0 is offline
cpupowerutils: bench - Fix cpu online check
Linus Torvalds [Thu, 30 Nov 2017 23:38:47 +0000 (18:38 -0500)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs
Pull quota & reiserfs changes from Jan Kara:
- two error checking improvements for quota
- remove bogus i_version increase for reiserfs
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: Check for register_shrinker() failure.
quota: propagate error from __dquot_initialize
reiserfs: remove unneeded i_version bump
Dave Airlie [Thu, 30 Nov 2017 23:15:57 +0000 (09:15 +1000)]
Merge branch 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Fixes for 4.15. Highlights:
- DC fixes for S3, gamma, audio, pageflipping, etc.
- fix a regression in radeon from kfd removal
- fix a ttm regression with swiotlb disabled
- misc other fixes
* 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux: (36 commits)
drm/radeon: remove init of CIK VMIDs 8-16 for amdkfd
drm/ttm: fix populate_and_map() functions once more
drm/amd/display: USB-C / thunderbolt dock specific workaround
drm/amd/display: Switch to drm_atomic_helper_wait_for_flip_done
drm/amd/display: fix gamma setting
drm/amd/display: Do not put drm_atomic_state on resume
drm/amd/display: Fix couple more inconsistent NULL checks in dc_resource
drm/amd/display: Fix potential NULL and mem leak in create_links
drm/amd/display: Fix hubp check in set_cursor_position
drm/amd/display: Fix use before NULL check in validate_timing
drm/amd/display: Bunch of smatch error and warning fixes in DC
drm/amd/display: Fix amdgpu_dm bugs found by smatch
drm/amd/display: try to find matching audio inst for enc inst first
drm/amd/display: fix seq issue: turn on clock before programming afmt.
drm/amd/display: fix memory leaks on error exit return
drm/amd/display: check plane state before validating fbc
drm/amd/display: Do DC mode-change check when adding CRTCs
drm/amd/display: Revert noisy assert messages
drm/amd/display: fix split viewport rounding error
drm/amd/display: Check aux channel before MST resume
...
Dave Airlie [Thu, 30 Nov 2017 23:15:31 +0000 (09:15 +1000)]
Merge branch 'for-upstream/mali-dp' of git://linux-arm.org/linux-ld into drm-fixes
mali-dp interface cleanups.
* 'for-upstream/mali-dp' of git://linux-arm.org/linux-ld:
drm: mali-dp: Disable planes when their CRTC gets disabled.
drm: mali-dp: Separate static internal data into a read-only structure.
drm/arm: Replace instances of drm_dev_unref with drm_dev_put.
drm: mali-dp: switch to drm_*_get(), drm_*_put() helpers
Dave Airlie [Thu, 30 Nov 2017 23:14:46 +0000 (09:14 +1000)]
Merge tag 'drm-amdkfd-fixes-2017-11-26' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes
This is amdkfd pull request for -rc2. It contains three small fixes to the
CIK SDMA code, compilation error fix in kfd_ioctl.h and fix to accessing
a pointer after it was released.
* tag 'drm-amdkfd-fixes-2017-11-26' of git://people.freedesktop.org/~gabbayo/linux:
uapi: fix linux/kfd_ioctl.h userspace compilation errors
drm/amdkfd: fix amdkfd use-after-free GP fault
drm/amdkfd: Fix SDMA oversubsription handling
drm/amdkfd: Fix SDMA ring buffer size calculation
drm/amdgpu: Fix SDMA load/unload sequence on HWS disabled mode
Dave Airlie [Thu, 30 Nov 2017 23:14:18 +0000 (09:14 +1000)]
Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixes
3 hdlcd fixes/cleanups
* 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld:
drm/arm: Replace instances of drm_dev_unref with drm_dev_put.
drm: Fix checkpatch issue: "WARNING: braces {} are not necessary for single statement blocks."
drm: hdlcd: Update PM code to save/restore console.
Dave Airlie [Thu, 30 Nov 2017 23:11:13 +0000 (09:11 +1000)]
Merge tag 'imx-drm-fixes-2017-11-30' of git://git.pengutronix.de/git/pza/linux into drm-fixes
drm/imx: fix commit_tail for new drm_atomic_helper_setup_commit
Since commit
080de2e5be2d ("drm/atomic: Check for busy planes/connectors before
setting the commit"), drm_atomic_helper_setup_commit expects that blocking
commits have completed flipping before the commit_tail returns. Add the missing
wait_for_flip_done to commit_tail to ensure this.
* tag 'imx-drm-fixes-2017-11-30' of git://git.pengutronix.de/git/pza/linux:
drm/imx: always call wait_for_flip_done in commit_tail
Dave Airlie [Thu, 30 Nov 2017 23:10:32 +0000 (09:10 +1000)]
Merge tag 'drm-intel-fixes-2017-11-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Disable transparent huge pages for now until we have a W/A
- Building fix when CONFIG_BACKLIGHT_CLASS_DEVICE is not selected
- GMBUS communication robustness
- Fbdev hotplug handling fix
gvt-fixes-2017-11-28
- regression fix for sane request alloc (Fred)
- locking fix (Changbin)
- fix invalid addr mask (Xiong)
- compression regression fix (Weinan)
- fix default pipe enable for virtual display (Xiaolin)
* tag 'drm-intel-fixes-2017-11-30' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915: Disable THP until we have a GPU read BW W/A
drm/i915/gvt: Correct ADDR_4K/2M/1G_MASK definition
drm/i915/gvt: enabled pipe A default on creating vgpu
drm/i915/gvt: Move request alloc to dispatch_workload path only
drm/i915/gvt: remove skl_misc_ctl_write handler
drm/i915/gvt: Fix unsafe locking caused by spin_unlock_bh
drm/i915: fix intel_backlight_device_register declaration
drm/i915/fbdev: Serialise early hotplug events with async fbdev config
drm/i915: Prevent zero length "index" write
drm/i915: Don't try indexed reads to alternate slave addresses
Dave Airlie [Thu, 30 Nov 2017 23:09:52 +0000 (09:09 +1000)]
Merge tag 'omapdrm-4.15-fixes' of git://git./linux/kernel/git/tomba/linux into drm-fixes
omapdrm fixes for 4.15
* Fix platform detection issue causing OMAP3 DPI output to have missing color bits
* Fix platform detection issue causing OMAP4 HDMI audio not to work
* tag 'omapdrm-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
omapdrm: hdmi4_cec: signedness bug in hdmi4_cec_init()
drm: omapdrm: Fix DPI on platforms using the DSI VDDS
omapdrm: hdmi4: Correct the SoC revision matching
drm/omap: displays: panel-dpi: add backlight dependency
drm/omap: Fix error handling path in 'omap_dmm_probe()'
Dave Airlie [Thu, 30 Nov 2017 23:09:30 +0000 (09:09 +1000)]
Merge tag 'drm-misc-fixes-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for -rc2
- big pile of bridge driver (mostly tc358767), all handled by Archit
and Andrez
- rockchip dsi fix
- atomic helper regression fix for spurious -EBUSY (Maarten)
- fix deferred fbdev fallout (Maarten)
* tag 'drm-misc-fixes-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc:
drm/bridge: tc358767: fix 1-lane behavior
drm/bridge: tc358767: fix AUXDATAn registers access
drm/bridge: tc358767: fix timing calculations
drm/bridge: tc358767: fix DP0_MISC register set
drm/bridge: tc358767: filter out too high modes
drm/bridge: tc358767: do no fail on hi-res displays
drm/bridge: Fix lvds-encoder since the panel_bridge rework.
drm/bridge: synopsys/dw-hdmi: Enable cec clock
drm/bridge: adv7511/33: Fix adv7511_cec_init() failure handling
drm/fb_helper: Disable all crtc's when initial setup fails.
drm/atomic: make drm_atomic_helper_wait_for_vblanks more agressive
drm/rockchip: dw-mipi-dsi: fix possible un-balanced runtime PM enable
Peter Rosin [Mon, 27 Nov 2017 16:31:00 +0000 (17:31 +0100)]
hwmon: (jc42) optionally try to disable the SMBUS timeout
With a nxp,se97 chip on an atmel sama5d31 board, the I2C adapter driver
is not always capable of avoiding the 25-35 ms timeout as specified by
the SMBUS protocol. This may cause silent corruption of the last bit of
any transfer, e.g. a one is read instead of a zero if the sensor chip
times out. This also affects the eeprom half of the nxp-se97 chip, where
this silent corruption was originally noticed. Other I2C adapters probably
suffer similar issues, e.g. bit-banging comes to mind as risky...
The SMBUS register in the nxp chip is not a standard Jedec register, but
it is not special to the nxp chips either, at least the atmel chips
have the same mechanism. Therefore, do not special case this on the
manufacturer, it is opt-in via the device property anyway.
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Palmer Dabbelt [Tue, 21 Nov 2017 15:59:28 +0000 (07:59 -0800)]
RISC-V: Clean up an unused include
We used to have some cmpxchg syscalls. They're no longer there, so we
no longer need the include.
CC: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Andrew Waterman [Wed, 25 Oct 2017 21:32:16 +0000 (14:32 -0700)]
RISC-V: Allow userspace to flush the instruction cache
Despite RISC-V having a direct 'fence.i' instruction available to
userspace (which we can't trap!), that's not actually viable when
running on Linux because the kernel might schedule a process on another
hart. There is no way for userspace to handle this without invoking the
kernel (as it doesn't know the thread->hart mappings), so we've defined
a RISC-V specific system call to flush the instruction cache.
This patch adds both a system call and a VDSO entry. If possible, we'd
like to avoid having the system call be considered part of the
user-facing ABI and instead restrict that to the VDSO entry -- both just
in general to avoid having additional user-visible ABI to maintain, and
because we'd prefer that users just call the VDSO entry because there
might be a better way to do this in the future (ie, one that doesn't
require entering the kernel).
Signed-off-by: Andrew Waterman <andrew@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Andrew Waterman [Wed, 25 Oct 2017 21:30:32 +0000 (14:30 -0700)]
RISC-V: Flush I$ when making a dirty page executable
The RISC-V ISA allows for instruction caches that are not coherent WRT
stores, even on a single hart. As a result, we need to explicitly flush
the instruction cache whenever marking a dirty page as executable in
order to preserve the correct system behavior.
Local instruction caches aren't that scary (our implementations actually
flush the cache, but RISC-V is defined to allow higher-performance
implementations to exist), but RISC-V defines no way to perform an
instruction cache shootdown. When explicitly asked to do so we can
shoot down remote instruction caches via an IPI, but this is a bit on
the slow side.
Instead of requiring an IPI to all harts whenever marking a page as
executable, we simply flush the currently running harts. In order to
maintain correct behavior, we additionally mark every other hart as
needing a deferred instruction cache which will be taken before anything
runs on it.
Signed-off-by: Andrew Waterman <andrew@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:20 +0000 (17:55 -0800)]
RISC-V: Add missing include
Fixes:
include/asm-generic/mm_hooks.h:20:11: warning: 'struct vm_area_struct' declared inside parameter list will not be visible outside of this definition or declaration
include/asm-generic/mm_hooks.h:19:38: warning: 'struct mm_struct' declared inside parameter list will not be visible outside of this definition or declaration
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:18 +0000 (17:55 -0800)]
RISC-V: Use define for get_cycles like other architectures
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:17 +0000 (17:55 -0800)]
RISC-V: Provide stub of setup_profiling_timer()
Fixes the following on allmodconfig build:
profile.c:(.text+0x3e4): undefined reference to `setup_profiling_timer'
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:16 +0000 (17:55 -0800)]
RISC-V: Export some expected symbols for modules
These are the ones needed by current allmodconfig, so add them instead
of everything other architectures are exporting -- the rest can be
added on demand later if needed.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:15 +0000 (17:55 -0800)]
RISC-V: move empty_zero_page definition to C and export it
Needed by some modules (exported by other architectures).
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:14 +0000 (17:55 -0800)]
RISC-V: io.h: type fixes for warnings
include <linux/types.h> for __iomem definition. Also, add volatile to
iounmap() like other architectures have it to avoid "discarding
volatile" warnings from some drivers.
Finally, explicitly promote the base address for INB/OUTB functions to
avoid some old legacy drivers complaining about int-to-ptr promotions.
The drivers are unlikely to work but they're included in allmodconfig
so the warnings are noisy.
Fixes, among other warnings, these with allmodconfig:
../arch/riscv/include/asm/io.h:24:21: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
extern void __iomem *ioremap(phys_addr_t offset, unsigned long size);
sound/pci/echoaudio/echoaudio.c: In function 'snd_echo_free':
sound/pci/echoaudio/echoaudio.c:1879:10: warning: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers]
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:13 +0000 (17:55 -0800)]
RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros
INT and SHORT are used by some drivers that pull in the include files,
so prefixing helps avoid namespace conflicts. Other constructs in the
same file already uses this.
Fixes, among others, these warnings with allmodconfig:
../sound/core/pcm_misc.c:43:0: warning: "INT" redefined
#define INT __force int
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Olof Johansson [Thu, 30 Nov 2017 01:55:12 +0000 (17:55 -0800)]
RISC-V: use generic serial.h
Fixes this from allmodconfig:
drivers/tty/serial/earlycon.c:27:10: fatal error: asm/serial.h: No such file or directory
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Trond Myklebust [Thu, 30 Nov 2017 12:21:33 +0000 (07:21 -0500)]
SUNRPC: Handle ENETDOWN errors
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Carlos Maiolino [Tue, 28 Nov 2017 16:54:10 +0000 (08:54 -0800)]
xfs: Properly retry failed dquot items in case of error during buffer writeback
Once the inode item writeback errors is already fixed, it's time to fix the same
problem in dquot code.
Although there were no reports of users hitting this bug in dquot code (at least
none I've seen), the bug is there and I was already planning to fix it when the
correct approach to fix the inodes part was decided.
This patch aims to fix the same problem in dquot code, regarding failed buffers
being unable to be resubmitted once they are flush locked.
Tested with the recently test-case sent to fstests list by Hou Tao.
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Darrick J. Wong [Tue, 28 Nov 2017 05:40:19 +0000 (21:40 -0800)]
xfs: scrub inode mode properly
Since we've used up all the bits in i_mode, the existing mode check
doesn't actually do anything useful. However, we've not used all the
bit values in the format portion of i_mode, so we /do/ need to test
that for bad values.
Fixes:
80e4e1268 ("xfs: scrub inodes")
Fixes-coverity-id:
1423992
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Darrick J. Wong [Mon, 27 Nov 2017 17:50:22 +0000 (09:50 -0800)]
xfs: remove unused parameter from xfs_writepage_map
The first thing that xfs_writepage_map does is clobber the offset
parameter. Since we never use the passed-in value, turn the parameter
into a local variable. This gets rid of an UBSAN warning in generic/466.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Darrick J. Wong [Mon, 27 Nov 2017 17:50:17 +0000 (09:50 -0800)]
xfs: ubsan fixes
Fix some complaints from the UBSAN about signed integer addition overflows.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Linus Torvalds [Thu, 30 Nov 2017 16:15:19 +0000 (08:15 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
- x86 bugfixes: APIC, nested virtualization, IOAPIC
- PPC bugfix: HPT guests on a POWER9 radix host
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (26 commits)
KVM: Let KVM_SET_SIGNAL_MASK work as advertised
KVM: VMX: Fix vmx->nested freeing when no SMI handler
KVM: VMX: Fix rflags cache during vCPU reset
KVM: X86: Fix softlockup when get the current kvmclock
KVM: lapic: Fixup LDR on load in x2apic
KVM: lapic: Split out x2apic ldr calculation
KVM: PPC: Book3S HV: Fix migration and HPT resizing of HPT guests on radix hosts
KVM: vmx: use X86_CR4_UMIP and X86_FEATURE_UMIP
KVM: x86: Fix CPUID function for word 6 (80000001_ECX)
KVM: nVMX: Fix vmx_check_nested_events() return value in case an event was reinjected to L2
KVM: x86: ioapic: Preserve read-only values in the redirection table
KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered
KVM: x86: ioapic: Remove redundant check for Remote IRR in ioapic_set_irq
KVM: x86: ioapic: Don't fire level irq when Remote IRR set
KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race
KVM: x86: inject exceptions produced by x86_decode_insn
KVM: x86: Allow suppressing prints on RDMSR/WRMSR of unhandled MSRs
KVM: x86: fix em_fxstor() sleeping while in atomic
KVM: nVMX: Fix mmu context after VMLAUNCH/VMRESUME failure
KVM: nVMX: Validate the IA32_BNDCFGS on nested VM-entry
...
Linus Torvalds [Thu, 30 Nov 2017 16:13:36 +0000 (08:13 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
- SPDX identifiers are added to more of the s390 specific files.
- The ELF_ET_DYN_BASE base patch from Kees is reverted, with the change
some old 31-bit programs crash.
- Bug fixes and cleanups.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (29 commits)
s390/gs: add compat regset for the guarded storage broadcast control block
s390: revert ELF_ET_DYN_BASE base changes
s390: Remove redundant license text
s390: crypto: Remove redundant license text
s390: include: Remove redundant license text
s390: kernel: Remove redundant license text
s390: add SPDX identifiers to the remaining files
s390: appldata: add SPDX identifiers to the remaining files
s390: pci: add SPDX identifiers to the remaining files
s390: mm: add SPDX identifiers to the remaining files
s390: crypto: add SPDX identifiers to the remaining files
s390: kernel: add SPDX identifiers to the remaining files
s390: sthyi: add SPDX identifiers to the remaining files
s390: drivers: Remove redundant license text
s390: crypto: Remove redundant license text
s390: virtio: add SPDX identifiers to the remaining files
s390: scsi: zfcp_aux: add SPDX identifier
s390: net: add SPDX identifiers to the remaining files
s390: char: add SPDX identifiers to the remaining files
s390: cio: add SPDX identifiers to the remaining files
...
Lucas Stach [Thu, 30 Nov 2017 13:31:46 +0000 (14:31 +0100)]
drm/imx: always call wait_for_flip_done in commit_tail
drm_atomic_helper_wait_for_vblanks will go away in the future.
The new drm_atomic_helper_setup_commit in 4.15 expects that blocking commits
have completed flipping before the commit_tail returns. This must be ensured
by calling wait_for_vblanks or wait_for_flip_done, where flip_done might do
a less agressive wait, which is fine for imx-drm.
Fixes:
080de2e5be2d (drm/atomic: Check for busy planes/connectors before
setting the commit)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Rafael J. Wysocki [Thu, 30 Nov 2017 12:37:29 +0000 (13:37 +0100)]
Merge branch 'acpi-ec' into acpi
* acpi-ec:
ACPI / EC: Fix regression related to PM ops support in ECDT device
Rafael J. Wysocki [Thu, 30 Nov 2017 12:29:56 +0000 (13:29 +0100)]
Merge branch 'pm-tools'
* pm-tools:
cpupower : Fix cpupower working when cpu0 is offline
cpupowerutils: bench - Fix cpu online check