| Commit message (Collapse) | Author | Age |
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rdma_disconnect may be called in 2 code flows:
- isert_wait_conn: disconnect initiated be the target
- disconnected_handler: disconnect invoked by the initiator
In case isert_conn->disconnect is true then rdma_disconnect
was called in disconnected handler, no need to call it again
from isert_wait_conn.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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disconnected_handler is invoked on several CM events (such
as DISCONNECTED, DEVICE_REMOVAL, TIMEWAIT_EXIT...). Since
multiple events can occur while before isert_free_conn is
invoked, we might put all isert_conn references and free
the connection too early.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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In case the connection didn't reach connected state, disconnected
handler will never be invoked thus the second kref_put on
isert_conn will be missing.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Pull drm fixes from Dave Airlie:
"A bunch of radeon fixes for oops on module unload, and problems with
resetting the dma engine, one nouveau fix for black boxes in rendering
on my mbp retina, one sti fix, and a couple of intel fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: ltc/gf100-: fix cbc issues on certain boards
drm/bochs: add missing drm_connector_register call
drm/cirrus: add missing drm_connector_register call
drm/radeon: Fix typo 'addr' -> 'entry' in rs400_gart_set_page
drm/nouveau/runpm: fix module unload
drm/radeon/px: fix module unload
vgaswitcheroo: add vga_switcheroo_fini_domain_pm_ops
drm/radeon: don't reset dma on r6xx-evergreen init
drm/radeon: don't reset sdma on CIK init
drm/radeon: don't reset dma on NI/SI init
drm/radeon/dpm: fix resume on mullins
drm/radeon: Disable HDP flush before every CS again for < r600
drm/radeon: delete unused PTE_* defines
drm/i915: Add limited color range readout for HDMI/DP ports on g4x/vlv/chv
drm: sti: do not iterate over the info frame array
drm/i915: Fix SRC_COPY width on 830/845g
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A mismatch between FB and LTC's idea of how big a large page is causes
issues such as black "holes" in rendering to occur on some boards
(those where LTC is configured for 64KiB large pages) when compression
is used.
Confirmed to fix at least the GK107 MBP.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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into drm-fixes
single fix for regression on rs4xx/rs690/rs740
* 'drm-fixes-3.17' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: Fix typo 'addr' -> 'entry' in rs400_gart_set_page
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Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83996
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
couple of display fixes.
* tag 'drm-intel-fixes-2014-09-18' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Add limited color range readout for HDMI/DP ports on g4x/vlv/chv
drm/i915: Fix SRC_COPY width on 830/845g
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The limited color range knob is in the port registers on
g4x and vlv/chv for HDMI, and on g4x for DP. Add the relevant code
to read out the hardware state into pipe config. On vlv/chv the
DP port limited color range knob is in PIPECONF for which we
already have readout code.
Cc: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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One small change I forgot to make in
commit c4d69da167fa967749aeb70bc0e94a457e5d00c1
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon Sep 8 14:25:41 2014 +0100
drm/i915: Evict CS TLBs between batches
was to update the copy width for the compact BLT copy instruction.
Reported-by: Thomas Richter <thor@math.tu-berlin.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Thomas Richter <thor@math.tu-berlin.de>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Tested-by: Thomas Richter <thor@math.tu-berlin.de>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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into drm-fixes
- fix a resume hang on mullins
- fix an oops on module unload with vgaswitcheroo (radeon and nouveau)
- fix possible hangs DMA engine hangs due to hw bugs
* 'drm-fixes-3.17' of git://people.freedesktop.org/~agd5f/linux:
drm/nouveau/runpm: fix module unload
drm/radeon/px: fix module unload
vgaswitcheroo: add vga_switcheroo_fini_domain_pm_ops
drm/radeon: don't reset dma on r6xx-evergreen init
drm/radeon: don't reset sdma on CIK init
drm/radeon: don't reset dma on NI/SI init
drm/radeon/dpm: fix resume on mullins
drm/radeon: Disable HDP flush before every CS again for < r600
drm/radeon: delete unused PTE_* defines
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Use the new vga_switcheroo_fini_domain_pm_ops function
to unregister the pm ops.
Based on a patch from:
Pali Rohár <pali.rohar@gmail.com>
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=84431
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Cc: Ben Skeggs <bskeggs@redhat.com>
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Use the new vga_switcheroo_fini_domain_pm_ops function
to unregister the pm ops.
Based on a patch from:
Pali Rohár <pali.rohar@gmail.com>
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=84431
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
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Drivers should call this on unload to unregister pmops.
Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=84431
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
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Otherwise we may lose the DMA golden settings which can
lead to hangs, etc.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Otherwise we may lose the DMA golden settings which can
lead to hangs, etc.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Otherwise we may lose the DMA golden settings which can
lead to hangs, etc.
bug:
https://www.libreoffice.org/bugzilla/show_bug.cgi?id=83500
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Need to properly disable nb dpm on dpm disable.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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It was causing display corruption with R300 generation GPUs at least.
Reported-and-Tested-by: Mikael Pettersson <mikpelinux@gmail.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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They don't appear to be used anywhere... elsewhere uses R*_PTE_*.
master@linux:U:.% git grep PTE_ -- drivers/gpu/drm/radeon | grep -v _PTE_
master@linux:U:.% (kyle@redacted:~/linux)
./arch/arm64/include/asm/pgtable.h:27:0: note: this is the location of the previous definition
#define PTE_VALID (_AT(pteval_t, 1) << 0)
^
In file included from drivers/gpu/drm/radeon/r600_cs.c:31:0:
drivers/gpu/drm/radeon/r600d.h:48:0: warning: "PTE_VALID" redefined [enabled by default]
#define PTE_VALID (1 << 0)
^
In file included from ./arch/arm64/include/asm/io.h:29:0,
from include/linux/clocksource.h:19,
from include/clocksource/arm_arch_timer.h:19,
from ./arch/arm64/include/asm/arch_timer.h:27,
from ./arch/arm64/include/asm/timex.h:19,
from include/linux/timex.h:65,
<snip>
from include/drm/drmP.h:51,
from drivers/gpu/drm/radeon/r600_cs.c:29:
./arch/arm64/include/asm/pgtable.h:27:0: note: this is the location of the previous definition
#define PTE_VALID (_AT(pteval_t, 1) << 0)
^
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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avi infoframe is a 13 bytes array, do not read after this limite.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"I've got a revert to fix a regression with btrfs device registration,
and Filipe has part two of his fsync fix from last week"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Revert "Btrfs: device_list_add() should not update list when mounted"
Btrfs: set inode's logged_trans/last_log_commit after ranged fsync
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This reverts commit b96de000bc8bc9688b3a2abea4332bd57648a49f.
This commit is triggering failures to mount by subvolume id in some
configurations. The main problem is how many different ways this
scanning function is used, both for scanning while mounted and
unmounted. A proper cleanup is too big for late rcs.
For now, just revert the commit and we'll put a better fix into a later
merge window.
Signed-off-by: Chris Mason <clm@fb.com>
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When a ranged fsync finishes if there are still extent maps in the modified
list, still set the inode's logged_trans and last_log_commit. This is important
in case an inode is fsync'ed and unlinked in the same transaction, to ensure its
inode ref gets deleted from the log and the respective dentries in its parent
are deleted too from the log (if the parent directory was fsync'ed in the same
transaction).
Instead make btrfs_inode_in_log() return false if the list of modified extent
maps isn't empty.
This is an incremental on top of the v4 version of the patch:
"Btrfs: fix fsync data loss after a ranged fsync"
which was added to its v5, but didn't make it on time.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
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Pull NFS client fixes from Trond Myklebust:
"Highligts:
- fix an Oops in nfs4_open_and_get_state
- fix an Oops in the nfs4_state_manager
- fix another bug in the close/open_downgrade code"
* tag 'nfs-for-3.17-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Fix another bug in the close/open_downgrade code
NFSv4: nfs4_state_manager() vs. nfs_server_remove_lists()
NFS: remove BUG possibility in nfs4_open_and_get_state
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James Drew reports another bug whereby the NFS client is now sending
an OPEN_DOWNGRADE in a situation where it should really have sent a
CLOSE: the client is opening the file for O_RDWR, but then trying to
do a downgrade to O_RDONLY, which is not allowed by the NFSv4 spec.
Reported-by: James Drews <drews@engr.wisc.edu>
Link: http://lkml.kernel.org/r/541AD7E5.8020409@engr.wisc.edu
Fixes: aee7af356e15 (NFSv4: Fix problems with close in the presence...)
Cc: stable@vger.kernel.org # 2.6.33+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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There is a race between nfs4_state_manager() and
nfs_server_remove_lists() that happens during a nfsv3 mount.
The v3 mount notices there is already a supper block so
nfs_server_remove_lists() called which uses the nfs_client_lock
spin lock to synchronize access to the client list.
At the same time nfs4_state_manager() is running through
the client list looking for work to do, using the same
lock. When nfs4_state_manager() wins the race to the
list, a v3 client pointer is found and not ignored
properly which causes the panic.
Moving some protocol checks before the state checking
avoids the panic.
CC: Stable Tree <stable@vger.kernel.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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commit 4fa2c54b5198d09607a534e2fd436581064587ed
NFS: nfs4_do_open should add negative results to the dcache.
used "d_drop(); d_add();" to ensure that a dentry was hashed
as a negative cached entry.
This is not safe if the dentry has an non-NULL ->d_inode.
It will trigger a BUG_ON in d_instantiate().
In that case, d_delete() is needed.
Also, only d_add if the dentry is currently unhashed, it seems
pointless removed and re-adding it unchanged.
Reported-by: Christoph Hellwig <hch@infradead.org>
Fixes: 4fa2c54b5198d09607a534e2fd436581064587ed
Cc: Jeff Layton <jeff.layton@primarydata.com>
Link: http://lkml.kernel.org/r/20140908144525.GB19811@infradead.org
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"These fix:
- Boot video device detection on dual-GPU Apple systems
- Hotplug fiascos on VGA switcheroo with radeon & nouveau drivers
- Boot hang on Freescale i.MX6 systems
- Excessive "no hotplug settings from platform" warnings
In particular:
Enumeration
- Don't default exclusively to first video device (Bruno Prémont)
PCI device hotplug
- Remove "no hotplug settings from platform" warning (Bjorn Helgaas)
- Add pci_ignore_hotplug() for VGA switcheroo (Bjorn Helgaas)
Freescale i.MX6
- Put LTSSM in "Detect" state before disabling (Lucas Stach)"
* tag 'pci-v3.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Remove "no hotplug settings from platform" warning
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
PCI: imx6: Put LTSSM in "Detect" state before disabling it
MAINTAINERS: Add Lucas Stach as co-maintainer for i.MX6 PCI driver
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* pci/vga:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
* commit '6a73336bde29':
PCI: Remove "no hotplug settings from platform" warning
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We print way too many messages like this:
pci 0000:00:00.0: no hotplug settings from platform
pci 0000:00:00.0: using default PCI settings
This usually happens when the platform doesn't supply an ACPI _HPP method,
but the method is optional, so there's no point in warning about it.
Not only are the messages useless, but we call pci_configure_slot() far too
many times, so they're repeated many times. I'll fix the overuse of
pci_configure_slot() too, but that will wait until the next merge window.
For now, just remove both log messages.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84391
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Commit 20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
Remove the left-over #ifndef check that will always match since the
corresponding arch-specific define is gone with above patch.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
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Commit 20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
For dual-GPU Apple computers above change represents a regression as code
in efifb did forcefully override vga_default_device while the merge did not
(vgaarb happens prior to PCI fixup).
To improve on initial device selection by vgaarb (it cannot know if PCI
device not behind bridges see/decode legacy VGA I/O or not), move the
screen_info based check from pci_video_fixup() to vgaarb's init function and
use it to refine/override decision taken while adding the individual PCI
VGA devices. This way PCI fixup has no reason to adjust vga_default_device
anymore but can depend on its value for flagging shadowed VBIOS.
This has the nice benefit of removing duplicated code but does introduce a
#if defined() block in vgaarb. Not all architectures have screen_info and
would cause compile to fail without it.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84461
Reported-and-Tested-By: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
CC: stable@vger.kernel.org # v3.5+
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* pci/hotplug-vga:
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
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Revert parts of f244d8b623da ("ACPIPHP / radeon / nouveau: Fix VGA
switcheroo problem related to hotplug").
A previous commit 5493b31f0b55 ("PCI: Add pci_ignore_hotplug() to ignore
hotplug events for a device") added equivalent functionality implemented in
a different way for both acpiphp and pciehp.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
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Powering off a hot-pluggable device, e.g., with pci_set_power_state(D3cold),
normally generates a hot-remove event that unbinds the driver.
Some drivers expect to remain bound to a device even while they power it
off and back on again. This can be dangerous, because if the device is
removed or replaced while it is powered off, the driver doesn't know that
anything changed. But some drivers accept that risk.
Add pci_ignore_hotplug() for use by drivers that know their device cannot
be removed. Using pci_ignore_hotplug() tells the PCI core that hot-plug
events for the device should be ignored.
The radeon and nouveau drivers use this to switch between a low-power,
integrated GPU and a higher-power, higher-performance discrete GPU. They
power off the unused GPU, but they want to remain bound to it.
This is a reimplementation of f244d8b623da ("ACPIPHP / radeon / nouveau:
Fix VGA switcheroo problem related to hotplug") but extends it to work with
both acpiphp and pciehp.
This fixes a problem where systems with dual GPUs using the radeon drivers
become unusable, freezing every few seconds (see bugzillas below). The
resume of the radeon device may also fail, e.g.,
This fixes problems on dual GPU systems where the radeon driver becomes
unusable because of problems while suspending the device, as in bug 79701:
[drm] radeon: finishing device.
radeon 0000:01:00.0: Userspace still has active objects !
radeon 0000:01:00.0: ffff8800cb4ec288 ffff8800cb4ec000 16384 4294967297 force free
...
WARNING: CPU: 0 PID: 67 at /home/apw/COD/linux/drivers/gpu/drm/radeon/radeon_gart.c:234 radeon_gart_unbind+0xd2/0xe0 [radeon]()
trying to unbind memory from uninitialized GART !
or while resuming it, as in bug 77261:
radeon 0000:01:00.0: ring 0 stalled for more than 10158msec
radeon 0000:01:00.0: GPU lockup ...
radeon 0000:01:00.0: GPU pci config reset
pciehp 0000:00:01.0:pcie04: Card not present on Slot(1-1)
radeon 0000:01:00.0: GPU reset succeeded, trying to resume
*ERROR* radeon: dpm resume failed
radeon 0000:01:00.0: Wait for MC idle timedout !
Link: https://bugzilla.kernel.org/show_bug.cgi?id=77261
Link: https://bugzilla.kernel.org/show_bug.cgi?id=79701
Reported-by: Shawn Starr <shawn.starr@rogers.com>
Reported-by: Jose P. <lbdkmjdf@sharklasers.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
CC: stable@vger.kernel.org # v3.15+
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* pci/host-imx6:
PCI: imx6: Put LTSSM in "Detect" state before disabling it
MAINTAINERS: Add Lucas Stach as co-maintainer for i.MX6 PCI driver
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This fixes a boot hang observed when the bootloader already enabled the
PCIe link for its own use. The fundamental problem is that Freescale
forgot to wire up the core reset, so software doesn't have a sane way to
get the core into a defined state.
According to the DW PCIe core reference manual, configuration of the core
may only happen when the LTSSM is disabled, so this is one of the first
things we need to do. Apparently this isn't safe to do when the LTSSM is in
any state other than "detect" as we observe an instant machine hang when
trying to do so while the link is already up.
As a workaround, force LTSSM into detect state right before hitting the
disable switch. There is still a race window because the LTSSM may
transition out of "detect" before we can disable it, but it's the best
we can do for now.
[bhelgaas: mention race window]
Link: http://lkml.kernel.org/r/1406830565-23450-3-git-send-email-l.stach@pengutronix.de
Reported-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tim Harvey <tharvey@gateworks.com>
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Also drop Shawn Guo per his request.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Acked-by: Richard Zhu <r65037@freescale.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of three fixes.
One represents a nasty shared tag map regression (another inverted
condition) caused by recent SCSI MQ patches, one is a longstanding
potential buffer overrun in the iscsi data buffer and the final one is
a use after free for the rare bidirectional commands"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] fix for bidi use after free
[SCSI] fix regression that accidentally disabled block-based tcq
[SCSI] libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
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When ending a bi-directionional SCSI request, blk_finish_request()
cleans up and frees the request, but scsi_release_bidi_buffers() tries
to indirect through the request to find it's data buffers. This causes
a panic due to a null pointer dereference.
Move the call to scsi_release_bidi_buffers() before the call to
blk_finish_request().
Signed-off-by: Daniel Gryniewicz <dang@linuxbox.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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The scsi blk-mq support accidentally flipped a conditional, which lead to
never enabling block based tcq when using the legacy request path.
Fixes: d285203cf647d7c9 scsi: add support for a blk-mq based I/O path.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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This patches fixes a potential buffer overrun in __iscsi_conn_send_pdu.
This function is used by iscsi drivers and userspace to send iscsi PDUs/
commands. For login commands, we have a set buffer size. For all other
commands we do not support data buffers.
This was reported by Dan Carpenter here:
http://www.spinics.net/lists/linux-scsi/msg66838.html
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Two kernel side fixes: a kprobes fix and a perf_remove_from_context()
fix (which does not yet fix the migration bug which is WIP)"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix a race condition in perf_remove_from_context()
kprobes/x86: Free 'optinsn' cache when range check fails
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We saw a kernel soft lockup in perf_remove_from_context(),
it looks like the `perf` process, when exiting, could not go
out of the retry loop. Meanwhile, the target process was forking
a child. So either the target process should execute the smp
function call to deactive the event (if it was running) or it should
do a context switch which deactives the event.
It seems we optimize out a context switch in perf_event_context_sched_out(),
and what's more important, we still test an obsolete task pointer when
retrying, so no one actually would deactive that event in this situation.
Fix it directly by reloading the task pointer in perf_remove_from_context().
This should cure the above soft lockup.
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1409696840-843-1-git-send-email-xiyou.wangcong@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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This patch frees the 'optinsn' slot when we get a range check error,
to prevent memory leaks.
Before this patch, cache entry in kprobe_insn_cache() won't be freed
if kprobe optimizing fails due to range check failure.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Pei Feiyue <peifeiyue@huawei.com>
Link: http://lkml.kernel.org/r/1406550019-70935-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
EFI fixes, a build fix, a page table dumping (debug) fix and a clang
build fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm64: Fix fdt-related memory reservation
x86/mm: Apply the section attribute to the variable, not its type
x86/efi: Fixup GOT in all boot code paths
x86/efi: Only load initrd above 4g on second try
x86-64, ptdump: Mark espfix area only if existent
x86, irq: Fix build error caused by 9eabc99a635a77cbf09
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git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent
Pull EFI fixes from Matt Fleming:
* Fix early boot regression affecting x86 EFI boot stub when loading
initrds above 4GB - Yinghai Lu
* Relocate GOT entries in the x86 EFI boot stub now that we have
symbols with global visibility - Matt Fleming
* fdt memory reservation fix for arm64 - Mark Salter
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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