| Commit message (Collapse) | Author | Age | Files | Lines |
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On receiving text request iscsi-target allocates buffer for
payload in iscsit_handle_text_cmd() and assigns buffer pointer
to cmd->text_in_ptr, this buffer is currently freed in
iscsit_release_cmd(), if iscsi-target sets 'C' bit in text
response then it will receive another text request from the
initiator with ttt != 0xffffffff in this case iscsi-target
will find cmd using itt and call iscsit_setup_text_cmd()
which will set cmd->text_in_ptr to NULL without freeing
previously allocated buffer.
This patch fixes this issue by calling kfree(cmd->text_in_ptr)
in iscsit_setup_text_cmd() before assigning NULL to it.
For the first text request cmd->text_in_ptr is NULL as
cmd is memset to 0 in iscsit_allocate_cmd().
Signed-off-by: Varun Prakash <varun@chelsio.com>
Cc: <stable@vger.kernel.org> # 4.0+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Call __kfree_skb() after processing skb to avoid
memory leak.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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On initial tcmu_configure_device call the info->name would
have already been allocated and set, so on the second call
make sure to free it first.
Reported-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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For most case the sg->length equals to PAGE_SIZE, so this bug won't
be triggered. Otherwise this will crash the kernel, for example when
all segments' sg->length equal to 1K.
Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Some fixes for Xen:
- a fix for a regression introduced in 4.13 for a Xen HVM-guest
configured with KASLR
- a fix for a possible deadlock in the xenbus driver when booting the
system
- a fix for lost interrupts in Xen guests"
* tag 'for-linus-4.13b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/events: Fix interrupt lost during irq_disable and irq_enable
xen: avoid deadlock in xenbus
xen: fix hvm guest with kaslr enabled
xen: split up xen_hvm_init_shared_info()
x86: provide an init_mem_mapping hypervisor hook
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Here is a device has xen-pirq-MSI interrupt. Dom0 might lost interrupt
during driver irq_disable/irq_enable. Here is the scenario,
1. irq_disable -> disable_dynirq -> mask_evtchn(irq channel)
2. dev interrupt raised by HW and Xen mark its evtchn as pending
3. irq_enable -> startup_pirq -> eoi_pirq ->
clear_evtchn(channel of irq) -> clear pending status
4. consume_one_event process the irq event without pending bit assert
which result in interrupt lost once
5. No HW interrupt raising anymore.
Now use enable_dynirq for enable_pirq of xen_pirq_chip to remove
eoi_pirq when irq_enable.
Signed-off-by: Liu Shuo <shuo.a.liu@intel.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
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When starting the xenwatch thread a theoretical deadlock situation is
possible:
xs_init() contains:
task = kthread_run(xenwatch_thread, NULL, "xenwatch");
if (IS_ERR(task))
return PTR_ERR(task);
xenwatch_pid = task->pid;
And xenwatch_thread() does:
mutex_lock(&xenwatch_mutex);
...
event->handle->callback();
...
mutex_unlock(&xenwatch_mutex);
The callback could call unregister_xenbus_watch() which does:
...
if (current->pid != xenwatch_pid)
mutex_lock(&xenwatch_mutex);
...
In case a watch is firing before xenwatch_pid could be set and the
callback of that watch unregisters a watch, then a self-deadlock would
occur.
Avoid this by setting xenwatch_pid in xenwatch_thread().
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
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Pull block fixes from Jens Axboe:
"A set of fixes that should go into this series. This contains:
- Fix from Bart for blk-mq requeue queue running, preventing a
continued loop of run/restart.
- Fix for a bio/blk-integrity issue, in two parts. One from
Christoph, fixing where verification happens, and one from Milan,
for a NULL profile.
- NVMe pull request, most of the changes being for nvme-fc, but also
a few trivial core/pci fixes"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvme: fix directive command numd calculation
nvme: fix nvme reset command timeout handling
nvme-pci: fix CMB sysfs file removal in reset path
lpfc: support nvmet_fc defer_rcv callback
nvmet_fc: add defer_req callback for deferment of cmd buffer return
nvme: strip trailing 0-bytes in wwid_show
block: Make blk_mq_delay_kick_requeue_list() rerun the queue at a quiet time
bio-integrity: only verify integrity on the lowest stacked driver
bio-integrity: Fix regression if profile verify_fn is NULL
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Pull NVMe fixes from Christoph:
"A few more small fixes - the fc/lpfc update is the biggest by far."
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The numd field of directive receive command takes number of dwords to
transfer. This fix has the correct calculation for numd.
Signed-off-by: Kwan (Hingkwan) Huen-SSI <kwan.huen@samsung.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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We need to return an error if a timeout occurs on any NVMe command during
initialization. Without this, the nvme reset work will be stuck. A timeout
will have a negative error code, meaning we need to stop initializing
the controller. All postitive returns mean the controller is still usable.
bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196325
Signed-off-by: Keith Busch <keith.busch@intel.com>
Cc: Martin Peres <martin.peres@intel.com>
[jth consolidated cleanup path ]
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Currently we create the sysfs entry even if we fail mapping
it. In that case, the unmapping will not remove the sysfs created
file. There is no good reason to create a sysfs entry for a non
working CMB and show his characteristics.
Fixes: f63572dff ("nvme: unmap CMB and remove sysfs file in reset path")
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Stephen Bates <sbates@raithlin.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Currently, calls to nvmet_fc_rcv_fcp_req() always copied the
FC-NVME cmd iu to a temporary buffer before returning, allowing
the driver to immediately repost the buffer to the hardware.
To address timing conditions on queue element structures vs async
command reception, the nvmet_fc transport occasionally may need to
hold on to the command iu buffer for a short period. In these cases,
the nvmet_fc_rcv_fcp_req() will return a special return code
(-EOVERFLOW). In these cases, the LLDD must delay until the new
defer_rcv lldd callback is called before recycling the buffer back
to the hw.
This patch adds support for the new nvmet_fc transport defer_rcv
callback and recognition of the new error code when passing commands
to the transport.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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At queue creation, the transport allocates a local job struct
(struct nvmet_fc_fcp_iod) for each possible element of the queue.
When a new CMD is received from the wire, a jobs struct is allocated
from the queue and then used for the duration of the command.
The job struct contains buffer space for the wire command iu. Thus,
upon allocation of the job struct, the cmd iu buffer is copied to
the job struct and the LLDD may immediately free/reuse the CMD IU
buffer passed in the call.
However, in some circumstances, due to the packetized nature of FC
and the api of the FC LLDD which may issue a hw command to send the
wire response, but the LLDD may not get the hw completion for the
command and upcall the nvmet_fc layer before a new command may be
asynchronously received on the wire. In other words, its possible
for the initiator to get the response from the wire, thus believe a
command slot free, and send a new command iu. The new command iu
may be received by the LLDD and passed to the transport before the
LLDD had serviced the hw completion and made the teardown calls for
the original job struct. As such, there is no available job struct
available for the new io. E.g. it appears like the host sent more
queue elements than the queue size. It didn't based on it's
understanding.
Rather than treat this as a hard connection failure queue the new
request until the job struct does free up. As the buffer isn't
copied as there's no job struct, a special return value must be
returned to the LLDD to signify to hold off on recycling the cmd
iu buffer. And later, when a job struct is allocated and the
buffer copied, a new LLDD callback is introduced to notify the
LLDD and allow it to recycle it's command iu buffer.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Some broken controllers (such as earlier Linux targets) pad model or
serial fields with 0-bytes rather than spaces. The NVMe spec disallows
0 bytes in "ASCII" fields. Thus strip trailing 0-bytes, too. Also make
sure that we get no underflow for pathological input.
Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- fix lockdep splat when removing mmc_block module
- fix the logic for setting eMMC HS400ES signal voltage
MMC host:
- omap_hsmmc: add CMD23 capability to fix -EIO errors"
* tag 'mmc-v4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: block: fix lockdep splat when removing mmc_block module
mmc: mmc: correct the logic for setting HS400ES signal voltage
mmc: host: omap_hsmmc: Add CMD23 capability to omap_hsmmc driver
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Fix lockdep splat introduced in v4.13-rc4.
[ 266.297226] ------------[ cut here ]------------
[ 266.300078] WARNING: CPU: 2 PID: 176 at /mnt/src/jaja/git/tf300t/include/linux/blkdev.h:657 mmc_blk_remove_req+0xd0/0xe8 [mmc_block]
[ 266.302937] Modules linked in: mmc_block(-) sdhci_tegra sdhci_pltfm sdhci pwrseq_simple pwrseq_emmc mmc_core
[ 266.305941] CPU: 2 PID: 176 Comm: rmmod Tainted: G W 4.13.0-rc4mq-00208-gb691e67724b8-dirty #694
[ 266.308852] Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
[ 266.311719] [<b011144c>] (unwind_backtrace) from [<b010ca54>] (show_stack+0x18/0x1c)
[ 266.314664] [<b010ca54>] (show_stack) from [<b062e3f4>] (dump_stack+0x84/0x98)
[ 266.317644] [<b062e3f4>] (dump_stack) from [<b01214f4>] (__warn+0xf4/0x10c)
[ 266.320542] [<b01214f4>] (__warn) from [<b01215d4>] (warn_slowpath_null+0x28/0x30)
[ 266.323534] [<b01215d4>] (warn_slowpath_null) from [<af067858>] (mmc_blk_remove_req+0xd0/0xe8 [mmc_block])
[ 266.326568] [<af067858>] (mmc_blk_remove_req [mmc_block]) from [<af068f40>] (mmc_blk_remove_parts.constprop.6+0x50/0x64 [mmc_block])
[ 266.329678] [<af068f40>] (mmc_blk_remove_parts.constprop.6 [mmc_block]) from [<af0693b8>] (mmc_blk_remove+0x24/0x140 [mmc_block])
[ 266.332894] [<af0693b8>] (mmc_blk_remove [mmc_block]) from [<af0052ec>] (mmc_bus_remove+0x20/0x28 [mmc_core])
[ 266.336198] [<af0052ec>] (mmc_bus_remove [mmc_core]) from [<b046aa64>] (device_release_driver_internal+0x164/0x200)
[ 266.339367] [<b046aa64>] (device_release_driver_internal) from [<b046ab54>] (driver_detach+0x40/0x74)
[ 266.342537] [<b046ab54>] (driver_detach) from [<b046982c>] (bus_remove_driver+0x68/0xdc)
[ 266.345660] [<b046982c>] (bus_remove_driver) from [<af06ad40>] (mmc_blk_exit+0xc/0x2cc [mmc_block])
[ 266.348875] [<af06ad40>] (mmc_blk_exit [mmc_block]) from [<b01aee30>] (SyS_delete_module+0x1c4/0x254)
[ 266.352068] [<b01aee30>] (SyS_delete_module) from [<b0108480>] (ret_fast_syscall+0x0/0x34)
[ 266.355308] ---[ end trace f68728a0d3053b72 ]---
Fixes: 7c84b8b43d3d ("mmc: block: bypass the queue even if usage is present for hotplug")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Change the default err value to -EINVAL, make sure the card only
has type EXT_CSD_CARD_TYPE_HS400_1_8V also do the signal voltage
setting when select hs400es mode.
Fixes: commit 1720d3545b77 ("mmc: core: switch to 1V8 or 1V2 for hs400es mode")
Cc: <stable@vger.kernel.org>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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omap_hsmmc driver always relied on CMD12 to stop transmission.
However if CMD12 is not issued at the correct timing, the card will
indicate a out of range error. With certain cards in some of the
DRA7 based boards, -EIO error is observed. By Adding CMD23 capability,
the MMC core will send MMC_SET_BLOCK_COUNT command before
MMC_READ_MULTIPLE_BLOCK/MMC_WRITE_MULTIPLE_BLOCK commands.
commit a04e6bae9e6f12 ("mmc: core: check also R1 response for
stop commands") exposed this bug in omap_hsmmc driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Pull fbdev fixes from Bartlomiej Zolnierkiewicz:
- allow user to disable write combined mapping in efifb driver (Dave
Airlie)
- fix use after free bugs on driver removal in imxfb driver (Dan
Carpenter)
- fix unused variable warning in omapfb driver (Arnd Bergmann)
* tag 'fbdev-v4.13-rc5' of git://github.com/bzolnier/linux:
efifb: allow user to disable write combined mapping.
fbdev: omapfb: remove unused variable
video: fbdev: imxfb: use after free in imxfb_remove()
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This patch allows the user to disable write combined mapping
of the efifb framebuffer console using an nowc option.
A customer noticed major slowdowns while logging to the console
with write combining enabled, on other tasks running on the same
CPU. (10x or greater slow down on all other cores on the same CPU
as is doing the logging).
I reproduced this on a machine with dual CPUs.
Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz (6 core)
I wrote a test that just mmaps the pci bar and writes to it in
a loop, while this was running in the background one a single
core with (taskset -c 1), building a kernel up to init/version.o
(taskset -c 8) went from 13s to 133s or so. I've yet to explain
why this occurs or what is going wrong I haven't managed to find
a perf command that in any way gives insight into this.
11,885,070,715 instructions # 1.39 insns per cycle
vs
12,082,592,342 instructions # 0.13 insns per cycle
is the only thing I've spotted of interest, I've tried at least:
dTLB-stores,dTLB-store-misses,L1-dcache-stores,LLC-store,LLC-store-misses,LLC-load-misses,LLC-loads,\mem-loads,mem-stores,iTLB-loads,iTLB-load-misses,cache-references,cache-misses
For now it seems at least a good idea to allow a user to disable write
combining if they see this until we can figure it out.
Note also most users get a real framebuffer driver loaded when kms
kicks in, it just happens on these machines the kernel didn't support
the gpu specific driver.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Acked-by: Peter Jones <pjones@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Removing the default display name left a harmless warning:
fbdev/omap2/omapfb/dss/core.c: In function 'omap_dss_probe':
fbdev/omap2/omapfb/dss/core.c:196:30: error: unused variable 'pdata' [-Werror=unused-variable]
This removes the now-unused variable as well.
Fixes: 278cba7eaf54 ("drm: omapdrm: Remove unused default display name support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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We free "info" then dereference it on the next line. Really this whole
function would be better if we wrote it to unwind in the mirror of how
things are allocated in the probe.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fix from Joerg Roedel:
"Fix a NULL-pointer dereference in arm_smmu_add_device"
* tag 'iommu-fixes-v4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/arm-smmu: fix null-pointer dereference in arm_smmu_add_device
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Commit c54451a "iommu/arm-smmu: Fix the error path in arm_smmu_add_device"
removed fwspec assignment in legacy_binding path as redundant which is
wrong. It needs to be updated after fwspec initialisation in
arm_smmu_register_legacy_master() as it is dereferenced later. Without
this there is a NULL-pointer dereference panic during boot on some hosts.
Signed-off-by: Artem Savkov <asavkov@redhat.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"All fixes for code that went in this cycle.
- a revert of an optimisation to the syscall exit path, which could
lead to an oops on either older machines or machines with > 1TB of
memory
- disable some deep idle states if the firmware configuration for
them fails
- re-enable HARD/SOFT lockup detectors in defconfigs after a Kconfig
change
- six fairly small patches fixing bugs in our new watchdog code
Thanks to: Gautham R Shenoy, Nicholas Piggin"
* tag 'powerpc-4.13-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/watchdog: add locking around init/exit functions
powerpc/watchdog: Fix marking of stuck CPUs
powerpc/watchdog: Fix final-check recovered case
powerpc/watchdog: Moderate touch_nmi_watchdog overhead
powerpc/watchdog: Improve watchdog lock primitive
powerpc: NMI IPI improve lock primitive
powerpc/configs: Re-enable HARD/SOFT lockup detectors
powerpc/powernv/idle: Disable LOSE_FULL_CONTEXT states when stop-api fails
Revert "powerpc/64: Avoid restore_math call if possible in syscall exit"
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Currently, we use the opal call opal_slw_set_reg() to inform the
Sleep-Winkle Engine (SLW) to restore the contents of some of the
Hypervisor state on wakeup from deep idle states that lose full
hypervisor context (characterized by the flag
OPAL_PM_LOSE_FULL_CONTEXT).
However, the current code has a bug in that if opal_slw_set_reg()
fails, we don't disable the use of these deep states (winkle on
POWER8, stop4 onwards on POWER9).
This patch fixes this bug by ensuring that if programing the
sleep-winkle engine to restore the hypervisor states in
pnv_save_sprs_for_deep_states() fails, then we exclude such states by
clearing the OPAL_PM_LOSE_FULL_CONTEXT flag from
supported_cpuidle_states. As a result POWER8 will be prevented from
using winkle for CPU-Hotplug, and POWER9 will put the offlined CPUs to
the default stop state when available.
Further, we ensure in the initialization of the cpuidle-powernv driver
to only include those states whose flags are present in
supported_cpuidle_states, thereby skipping OPAL_PM_LOSE_FULL_CONTEXT
states when they have been disabled due to stop-api failure.
Fixes: 1e1601b38e6 ("powerpc/powernv/idle: Restore SPRs for deep idle
states via stop API.")
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Nothing too earth shattering here, it just seems like lots of little
things all over the place.
msm has probably the larger amount of changes, but they all seem fine,
otherwise, some rockchip, i915, etnaviv and exynos fixes, along with
one nouveau regression fix for some older GPUs"
* tag 'drm-fixes-for-v4.13-rc5' of git://people.freedesktop.org/~airlied/linux: (35 commits)
drm/nouveau/disp/nv04: avoid creation of output paths
drm: make DRM_STM default n
drm/exynos: forbid creating framebuffers from too small GEM buffers
drm/etnaviv: Fix off-by-one error in reloc checking
drm/i915: fix backlight invert for non-zero minimum brightness
drm/i915/shrinker: Wrap need_resched() inside preempt-disable
drm/i915/perf: fix flex eu registers programming
drm/i915: Fix out-of-bounds array access in bdw_load_gamma_lut
drm/i915/gvt: Change the max length of mmio_reg_rw from 4 to 8
drm/i915/gvt: Initialize MMIO Block with HW state
drm/rockchip: vop: report error when check resource error
drm/rockchip: vop: round_up pitches to word align
drm/rockchip: vop: fix NV12 video display error
drm/rockchip: vop: fix iommu page fault when resume
drm/i915/gvt: clean workload queue if error happened
drm/i915/gvt: change resetting to resetting_eng
drm/msm: gpu: don't abuse dma_alloc for non-DMA allocations
drm/msm: gpu: call qcom_mdt interfaces only for ARCH_QCOM
drm/msm/adreno: Prevent unclocked access when retrieving timestamps
drm/msm: Remove __user from __u64 data types
...
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single nouveau regression fix.
* 'linux-4.13' of git://github.com/skeggsb/linux:
drm/nouveau/disp/nv04: avoid creation of output paths
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Fixes hitting WARN_ON() during initialisation of pre-NV50 GPUs, caused
by the recent changes to support pad macro routing on GM20x.
We currently don't use them here for older GPUs anyway.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Default config value for all other drivers is N.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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into drm-fixes
single etnaviv fix.
* 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux:
drm/etnaviv: Fix off-by-one error in reloc checking
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A relocation pointing to the last four bytes of a buffer can
legitimately happen in the case of small vertex buffers.
CC: stable@vger.kernel.org #4.9+
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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git://anongit.freedesktop.org/git/drm-intel into drm-fixes
drm/i915 fixes for v4.13-rc5
* tag 'drm-intel-fixes-2017-08-09-1' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915: fix backlight invert for non-zero minimum brightness
drm/i915/shrinker: Wrap need_resched() inside preempt-disable
drm/i915/perf: fix flex eu registers programming
drm/i915: Fix out-of-bounds array access in bdw_load_gamma_lut
drm/i915/gvt: Change the max length of mmio_reg_rw from 4 to 8
drm/i915/gvt: Initialize MMIO Block with HW state
drm/i915/gvt: clean workload queue if error happened
drm/i915/gvt: change resetting to resetting_eng
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When we started following the backlight minimum brightness in
6dda730e55f4 ("drm/i915: respect the VBT minimum backlight brightness")
we overlooked the brightness invert quirk. Even if we invert the
brightness, we need to take the min limit into account. We probably
missed this because the invert has only been required on gen4 for proper
operation.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101127
Fixes: 6dda730e55f4 ("drm/i915: respect the VBT minimum backlight brightness")
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170531083355.7898-1-jani.nikula@intel.com
(cherry picked from commit e9d7486eac949f2a8d121657e536c8abdd4ea088)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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In order for us to successfully detect the end of a timeslice,
preemption must be disabled. Otherwise, inside the loop we may be
preempted many times without our noticing, and each time our timeslice
will be reset, invalidating need_resched()
Reported-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reported-by: Tomi Sarvela <tomi.p.sarvela@intel.com>
Fixes: 290271de34f6 ("drm/i915: Spin for struct_mutex inside shrinker")
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>
Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.13-rc1+
Link: https://patchwork.freedesktop.org/patch/msgid/20170804104135.26805-1-chris@chris-wilson.co.uk
Tested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit 6cb0c6ad9e07f2c7971c4e8e0d9b7ceba151a925)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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We were reserving fewer dwords in the ring than necessary. Indeed
we're always writing all registers once, so discard the actual number
of registers given by the user and just program the whitelisted ones
once.
Fixes: 19f81df2859e ("drm/i915/perf: Add OA unit support for Gen 8+")
Reported-by: Matthew Auld <matthew.william.auld@gmail.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v4.12+
Link: https://patchwork.freedesktop.org/patch/msgid/20170803165812.2373-6-lionel.g.landwerlin@intel.com
(cherry picked from commit 01d928e9a1644eb2e28f684905f888e700c7b9dc)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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drm-intel-fixes
gvt-fixes-2017-08-07
- two regression fixes for 65f9f6febf12, one is for display MMIO
initial value (Tina), another for 64bit MMIO access (Xiong)
- two reset fixes from Chuanxiao
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170807080716.qljcvws6opydnotk@zhen-hp.sh.intel.com
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When linux guest access mmio with __raw_i915_read64 or __raw_i915_write64,
its length is 8 bytes.
This fix the linux guest in xengt couldn't boot up as it fail in
reading pv_info->magic.
Fixes: 65f9f6febf12 ("drm/i915/gvt: Optimize MMIO register handling for some large MMIO blocks")
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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MMIO block with tracked mmio, is introduced for the sake of performance
of searching tracked mmio. All the tracked mmio needs to get the initial
value from the HW state during vGPU being created. This patch is to
initialize the tracked registers in MMIO block with the HW state.
v2: Add "Fixes:" line for this patch (Zhenyu)
Fixes: 65f9f6febf12 ("drm/i915/gvt: Optimize MMIO register handling for some large MMIO blocks")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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If a workload caused a HW GPU hang or it is in the middle of
vGPU reset, the workload queue should be cleaned up to emulate
the hang state of the GPU.
v2:
- use ENGINE_MASK(ring_id) instead of (1 << ring_id). (Zhenyu)
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Use resetting_eng to identify which engine is resetting
so the rest ones' workload won't be impacted
v2:
- use ENGINE_MASK(ring_id) instead of (1 << ring_id). (Zhenyu)
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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bdw_load_gamma_lut is writing beyond the array to the maximum value.
The intend of the function is to clamp values > 1 to 1, so write
the intended color to the max register.
This fixes the following KASAN warning:
[ 197.020857] [IGT] kms_pipe_color: executing
[ 197.063434] [IGT] kms_pipe_color: starting subtest ctm-0-25-pipe0
[ 197.078989] ==================================================================
[ 197.079127] BUG: KASAN: slab-out-of-bounds in bdw_load_gamma_lut.isra.2+0x3b9/0x570 [i915]
[ 197.079188] Read of size 2 at addr ffff8800d38db150 by task kms_pipe_color/1839
[ 197.079208] CPU: 2 PID: 1839 Comm: kms_pipe_color Tainted: G U 4.13.0-rc1-patser+ #5211
[ 197.079215] Hardware name: NUC5i7RYB, BIOS RYBDWi35.86A.0246.2015.0309.1355 03/09/2015
[ 197.079220] Call Trace:
[ 197.079230] dump_stack+0x68/0x9e
[ 197.079239] print_address_description+0x6f/0x250
[ 197.079251] kasan_report+0x216/0x370
[ 197.079374] ? bdw_load_gamma_lut.isra.2+0x3b9/0x570 [i915]
[ 197.079451] ? gen8_write16+0x4e0/0x4e0 [i915]
[ 197.079460] __asan_report_load2_noabort+0x14/0x20
[ 197.079535] bdw_load_gamma_lut.isra.2+0x3b9/0x570 [i915]
[ 197.079612] broadwell_load_luts+0x1df/0x550 [i915]
[ 197.079690] intel_color_load_luts+0x7b/0x80 [i915]
[ 197.079764] intel_begin_crtc_commit+0x138/0x760 [i915]
[ 197.079783] drm_atomic_helper_commit_planes_on_crtc+0x1a3/0x820 [drm_kms_helper]
[ 197.079859] ? intel_pre_plane_update+0x571/0x580 [i915]
[ 197.079937] intel_update_crtc+0x238/0x330 [i915]
[ 197.080016] intel_update_crtcs+0x10f/0x210 [i915]
[ 197.080092] intel_atomic_commit_tail+0x1552/0x3340 [i915]
[ 197.080101] ? _raw_spin_unlock+0x3c/0x40
[ 197.080110] ? __queue_work+0xb40/0xbf0
[ 197.080188] ? skl_update_crtcs+0xc00/0xc00 [i915]
[ 197.080195] ? trace_hardirqs_on+0xd/0x10
[ 197.080269] ? intel_atomic_commit_ready+0x128/0x13c [i915]
[ 197.080329] ? __i915_sw_fence_complete+0x5b8/0x6d0 [i915]
[ 197.080336] ? debug_object_activate+0x39e/0x580
[ 197.080397] ? i915_sw_fence_await+0x30/0x30 [i915]
[ 197.080409] ? __might_sleep+0x15b/0x180
[ 197.080483] intel_atomic_commit+0x944/0xa70 [i915]
[ 197.080490] ? refcount_dec_and_test+0x11/0x20
[ 197.080567] ? intel_atomic_commit_tail+0x3340/0x3340 [i915]
[ 197.080597] ? drm_atomic_crtc_set_property+0x303/0x580 [drm]
[ 197.080674] ? intel_atomic_commit_tail+0x3340/0x3340 [i915]
[ 197.080704] drm_atomic_commit+0xd7/0xe0 [drm]
[ 197.080722] drm_atomic_helper_crtc_set_property+0xec/0x130 [drm_kms_helper]
[ 197.080749] drm_mode_crtc_set_obj_prop+0x7d/0xb0 [drm]
[ 197.080775] drm_mode_obj_set_property_ioctl+0x50b/0x5d0 [drm]
[ 197.080783] ? __might_fault+0x104/0x180
[ 197.080809] ? drm_mode_obj_find_prop_id+0x160/0x160 [drm]
[ 197.080838] ? drm_mode_obj_find_prop_id+0x160/0x160 [drm]
[ 197.080861] drm_ioctl_kernel+0x154/0x1a0 [drm]
[ 197.080885] drm_ioctl+0x624/0x8f0 [drm]
[ 197.080910] ? drm_mode_obj_find_prop_id+0x160/0x160 [drm]
[ 197.080934] ? drm_getunique+0x210/0x210 [drm]
[ 197.080943] ? __handle_mm_fault+0x1bd0/0x1ce0
[ 197.080949] ? lock_downgrade+0x610/0x610
[ 197.080957] ? __lru_cache_add+0x15a/0x180
[ 197.080967] do_vfs_ioctl+0xd92/0xe40
[ 197.080975] ? ioctl_preallocate+0x1b0/0x1b0
[ 197.080982] ? selinux_capable+0x20/0x20
[ 197.080991] ? __do_page_fault+0x7b7/0x9a0
[ 197.080997] ? lock_downgrade+0x5bb/0x610
[ 197.081007] ? security_file_ioctl+0x57/0x90
[ 197.081016] SyS_ioctl+0x4e/0x80
[ 197.081024] entry_SYSCALL_64_fastpath+0x18/0xad
[ 197.081030] RIP: 0033:0x7f61f287a987
[ 197.081035] RSP: 002b:00007fff7d44d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 197.081043] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f61f287a987
[ 197.081048] RDX: 00007fff7d44d1c0 RSI: 00000000c01864ba RDI: 0000000000000003
[ 197.081053] RBP: 00007f61f2b3eb00 R08: 0000000000000059 R09: 0000000000000000
[ 197.081058] R10: 0000002ea5c4a290 R11: 0000000000000246 R12: 00007f61f2b3eb58
[ 197.081063] R13: 0000000000001010 R14: 00007f61f2b3eb58 R15: 0000000000002702
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101659
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reported-by: Martin Peres <martin.peres@linux.intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Fixes: 82cf435b3134 ("drm/i915: Implement color management on bdw/skl/bxt/kbl")
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Kiran S Kumar <kiran.s.kumar@intel.com>
Cc: Kausal Malladi <kausalmalladi@gmail.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.7+
Link: https://patchwork.freedesktop.org/patch/msgid/20170724091431.24251-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
(cherry picked from commit 09a92bc8773b4314e02b478e003fe5936ce85adb)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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git://anongit.freedesktop.org/git/drm-misc into drm-fixes
Core Changes:
- dma-buf: Allow multiple sync_files to wrap a single dma-fence (Chris)
Driver Changes:
- rockchip: misc fixes to vop driver from the downstream rockchip tree (Mark)
- Error path cleanups to tc358767 & host1x (Lucas & Paul, respectively)
* tag 'drm-misc-fixes-2017-08-08' of git://anongit.freedesktop.org/git/drm-misc:
drm/rockchip: vop: report error when check resource error
drm/rockchip: vop: round_up pitches to word align
drm/rockchip: vop: fix NV12 video display error
drm/rockchip: vop: fix iommu page fault when resume
dma-buf/sync_file: Allow multiple sync_files to wrap a single dma-fence
drm/bridge: tc358767: fix probe without attached output node
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The user would be confused while facing a error commit without
any error report.
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Sandy huang <sandy.huang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1501494596-7090-1-git-send-email-mark.yao@rock-chips.com
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VOP pitch register is word align, need align to word.
VOP_WIN0_VIR:
bit[31:16] win0_vir_stride_uv
Number of words of Win0 uv Virtual width
bit[15:0] win0_vir_width
Number of words of Win0 yrgb Virtual width
ARGB888 : win0_vir_width
RGB888 : (win0_vir_width*3/4) + (win0_vir_width%3)
RGB565 : ceil(win0_vir_width/2)
YUV : ceil(win0_vir_width/4)
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Sandy huang <sandy.huang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1501494591-7034-1-git-send-email-mark.yao@rock-chips.com
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fixup the scale calculation formula on the case
src_height == (dst_height/2).
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Sandy huang <sandy.huang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1501494586-6984-1-git-send-email-mark.yao@rock-chips.com
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Iommu would get page fault with following path:
vop_disable:
1, disable all windows and set vop config done
2, vop enter to standy, all windows not works, but their registers
are not clean, when you read window's enable bit, may found the
window is enable.
vop_enable:
1, memcpy(vop->regsbak, vop->regs, len)
save current vop registers to vop->regsbak, then you can found
window is enable on regsbak.
2, VOP_WIN_SET(vop, win, gate, 1);
force enable window gate, but gate and enable are on same
hardware register, then window enable bit rewrite to vop hardware.
3, vop power on, and vop might try to scan destroyed buffer,
then iommu get page fault.
Move windows disable after vop regsbak restore, then vop regsbak mechanism
would keep tracing the modify, everything would be safe.
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Reviewed-by: Sandy huang <sandy.huang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1501494582-6934-1-git-send-email-mark.yao@rock-chips.com
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Up until recently sync_file were create to export a single dma-fence to
userspace, and so we could canabalise a bit insie dma-fence to mark
whether or not we had enable polling for the sync_file itself. However,
with the advent of syncobj, we do allow userspace to create multiple
sync_files for a single dma-fence. (Similarly, that the sw-sync
validation framework also started returning multiple sync-files wrapping
a single dma-fence for a syncpt also triggering the problem.)
This patch reverts my suggestion in commit e24165537312
("dma-buf/sync_file: only enable fence signalling on poll()") to use a
single bit in the shared dma-fence and restores the sync_file->flags for
tracking the bits individually.
Reported-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Fixes: f1e8c67123cf ("dma-buf/sw-sync: Use an rbtree to sort fences in the timeline")
Fixes: e9083420bbac ("drm: introduce sync objects (v4)")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: dri-devel@lists.freedesktop.org
Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.13-rc1+
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170728212951.7818-1-chris@chris-wilson.co.uk
(cherry picked from commit db1fc97ca0c0d3fdeeadf314d99a26188438940a)
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The output node of the TC358767 is only used if another bridge is chained
behind it. Panels attached to the TC358767 can be detected using the usual
DP AUX probing. This restores the old behavior of ignoring the output if
no endpoint is found.
Fixes: ebc944613567 (drm: convert drivers to use drm_of_find_panel_or_bridge)
CC: stable@vger.kernel.org
Acked-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170710124125.9019-1-l.stach@pengutronix.de
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