| Commit message (Collapse) | Author | Age | Files | Lines |
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If dwc3_gadget_init_endpoint() fails after allocate some of the eps, we
need to free their memory to avoid leak.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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It is required by the OMAP glue driver, but it already depends
on it. The core driver should not depend on it. This will
allow the use of the PCI glue driver again.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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They are only called by '__ref' function multi_bind(), and they will
call '__init' functions, so recommend to let them '__ref' too.
The related warnings:
WARNING: drivers/usb/gadget/g_multi.o(.text+0xded6): Section mismatch in reference from the variable .LM2921 to the variable .init.text:_rndis_do_config
The function .LM2921() references
the variable __init _rndis_do_config.
This is often because .LM2921 lacks a __init
annotation or the annotation of _rndis_do_config is wrong.
WARNING: drivers/usb/gadget/g_multi.o(.text+0xdf16): Section mismatch in reference from the variable .LM2953 to the variable .init.text:_cdc_do_config
The function .LM2953() references
the variable __init _cdc_do_config.
This is often because .LM2953 lacks a __init
annotation or the annotation of _cdc_do_config is wrong.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Add PCI id for Intel BayTrail.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This fixes commit a38a275030086d95306555e544fc7c0e65ccd00e
(usb: gadget: cdc2: convert to new interface of f_ecm)
The invocation of usb_get_function_instance() is in cdc_bind()
and should not be repeated in cdc_do_config().
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This patch fixes a NULL pointer dereference and a WARN_ON in
dummy-hcd. These things were the result of moving to the UDC core
framework, and possibly of changes to that framework.
Now unloading a gadget driver causes the UDC to be stopped after the
gadget driver is unbound, not before. Therefore the "driver" argument
to dummy_udc_stop() can be NULL, so we must not try to print the
driver's name without checking first.
Also, the UDC framework automatically unregisters the gadget when the
UDC is deleted. Therefore a sysfs attribute file attached to the
gadget must be removed before the UDC is deleted, not after.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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mv_u3d_ep_disable()
mv_u3d_nuke() expects to be calles with ep->u3d->lock held,
because mv_u3d_done() does. But mv_u3d_ep_disable() calls it
without lock that can lead to unpleasant consequences.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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According to Prolific, several (unauthorized) cheap and less functional
clones of the PL2303HX chip are in circulation. [1]
I've had the chance to test such a cloned device and it turned out that
it doesn't support any baud rates above 115200 baud (original: 6 Mbaud)
It also doesn't support the divisior based baud rate encoding method,
so no continuous baud rate adjustment is possible.
Nevertheless, these devices have been working (unintentionally) with
the driver up to commit 61fa8d694b ("pl2303: also use the divisor based
baud rate encoding method for baud rates < 115200 with HX chips"), and
this commit broke support for them.
Fortunately, it is pretty simple to distinguish between the original
and the cloned HX chips, so I've added a check and an extra chip type
to keep the clones working.
The same check is used by the latest Prolific Windows driver, so it
should be solid.
[1] http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Update the MODULE_AUTHOR field of the Faraday OTG drivers to reflect
current maintainers email address.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 428aac8a81058e2303677a8fbf26670229e51d3a.
This isn't quite ready for 3.12, we need some more EHCI driver changes
that are just now showing up. So revert this for now, and queue it up
later for 3.13.
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull drm fixes from Dave Airlie:
- some small fixes for msm and exynos
- a regression revert affecting nouveau users with old userspace
- intel pageflip deadlock and gpu hang fixes, hsw modesetting hangs
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
Revert "drm: mark context support as a legacy subsystem"
drm/i915: Don't enable the cursor on a disable pipe
drm/i915: do not update cursor in crtc mode set
drm/exynos: fix return value check in lowlevel_buffer_allocate()
drm/exynos: Fix address space warnings in exynos_drm_fbdev.c
drm/exynos: Fix address space warning in exynos_drm_buf.c
drm/exynos: Remove redundant OF dependency
drm/msm: drop unnecessary set_need_resched()
drm/i915: kill set_need_resched
drm/msm: fix potential NULL pointer dereference
drm/i915/dvo: set crtc timings again for panel fixed modes
drm/i915/sdvo: Robustify the dtd<->drm_mode conversions
drm/msm: workaround for missing irq
drm/msm: return -EBUSY if bo still active
drm/msm: fix return value check in ERR_PTR()
drm/msm: fix cmdstream size check
drm/msm: hangcheck harder
drm/msm: handle read vs write fences
drm/i915/sdvo: Fully translate sync flags in the dtd->mode conversion
drm/i915: Use proper print format for debug prints
...
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git://people.freedesktop.org/~robclark/linux into drm-fixes
A couple small msm fixes. Plus drop of set_need_resched().
* 'msm-fixes-3.12' of git://people.freedesktop.org/~robclark/linux:
drm/msm: drop unnecessary set_need_resched()
drm/msm: fix potential NULL pointer dereference
drm/msm: workaround for missing irq
drm/msm: return -EBUSY if bo still active
drm/msm: fix return value check in ERR_PTR()
drm/msm: fix cmdstream size check
drm/msm: hangcheck harder
drm/msm: handle read vs write fences
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This was inherited from i915/udl, and not actually needed.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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The dereference to 'pdata' should be moved below the NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
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Occasionally we seem to miss an IRQ from the ME (microengine). I'm not
entirely sure the root cause, but for now we can unwedge things by
retiring from the hangcheck timer.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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When we CPU_PREP a bo with NOSYNC flag (for example, to implement
PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE), an -EBUSY return indicates to
userspace that the bo is still busy. Previously it was incorrectly
returning 0 in this case.
And while we're in there throw in an bit of extra sanity checking in
case userspace tries to wait for a bogus fence.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
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Need to check size+offset against bo size (duh!).. now we have a test
case to make sure I've done it right:
https://github.com/freedreno/msmtest/blob/master/submittest.c
Also, use DRM_ERROR() for error case traces, which makes debugging
userspace easier when enabling debug traces is too much.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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If gpu locks up with the rptr shortly beyond the wrap-around point in
the ringbuffer, because the rptr was not reset (but wptr is, by virtue
of resetting rb->cur), we could end up in a scenario where we think
there is not enough space in the ringbuffer for the next cmds. And
since the CP won't reset rptr until after processing an IB, this leaves
things in a sort of deadlock.
So reset rptr too. And a bit more spiffing up of hangcheck to make
things easier to debug.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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The userspace API already had everything needed to handle read vs write
synchronization. This patch actually bothers to hook it up properly, so
that we don't need to (for example) stall on userspace read access to a
buffer that gpu is also still reading.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
Just small fixes, and code cleanups.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: fix return value check in lowlevel_buffer_allocate()
drm/exynos: Fix address space warnings in exynos_drm_fbdev.c
drm/exynos: Fix address space warning in exynos_drm_buf.c
drm/exynos: Remove redundant OF dependency
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In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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Silences the following warnings:
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:102:40: warning:
incorrect type in assignment (different address spaces)
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:102:40:
expected void [noderef] <asn:2>*kvaddr
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:102:40: got void *
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:107:48: warning:
incorrect type in assignment (different address spaces)
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:107:48:
expected void [noderef] <asn:2>*kvaddr
drivers/gpu/drm/exynos/exynos_drm_fbdev.c:107:48: got void *
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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Fixes the following warning:
drivers/gpu/drm/exynos/exynos_drm_buf.c:66:29: warning:
incorrect type in assignment (different address spaces)
drivers/gpu/drm/exynos/exynos_drm_buf.c:66:29:
expected void [noderef] <asn:2>*kvaddr
drivers/gpu/drm/exynos/exynos_drm_buf.c:66:29: got void *
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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Now that DRM_EXYNOS depends on OF, we do not need individual
drivers to depend on it.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Some more dealock fixes around pageflips and gpu hangs, fixes for hsw hangs
when doing modesets/dpms. And a few minor things to rectify issues with our
modeset state tracking which the checker spotted.
* tag 'drm-intel-fixes-2013-09-19' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Don't enable the cursor on a disable pipe
drm/i915: do not update cursor in crtc mode set
drm/i915: kill set_need_resched
drm/i915/dvo: set crtc timings again for panel fixed modes
drm/i915/sdvo: Robustify the dtd<->drm_mode conversions
drm/i915/sdvo: Fully translate sync flags in the dtd->mode conversion
drm/i915: Use proper print format for debug prints
drm/i915: fix wait_for_pending_flips vs gpu hang deadlock
drm/i915: Track pfit enable state separately from size
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On HSW enabling a plane on a disabled pipe may hang the entire system.
And there's no good reason for doing it ever, so just don't.
v2: Move the crtc active checks to intel_crtc_cursor_{set,move} to
avoid confusing people during modeset
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The cursor is disabled before crtc mode set in crtc disable (and we
assert this is the case), and enabled afterwards in crtc enable. Do not
update it in crtc mode set.
On HSW enabling a plane on a disabled pipe may hang the entire system.
And there's no good reason for doing it ever, so just don't.
v2: Add note about HSW hangs - vsyrjala
Cc: stable@vger.kernel.org
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This is just a remnant from the old days when our reset handling was
horribly racy, suffered from terribly locking issues and often happily
live-locked. Those days are now gone so we can drop the hacks and just
rip the reschedule-point out.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Yet another regression due to
commit 135c81b8c3c9a70d7b55758c9c2a247a4abb7b64
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sun Jul 21 21:37:09 2013 +0200
drm/i915: clean up crtc timings computation
I'm starting to wonder whether this was worth it ...
v2: Actually make it compile.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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We've failed to properly clear out the flags when converting a dtd to
a drm mode. For more paranoia just memset the entire structure (and
drop the now redundant clears).
Also since
commit 135c81b8c3c9a70d7b55758c9c2a247a4abb7b64
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sun Jul 21 21:37:09 2013 +0200
drm/i915: clean up crtc timings computation
we don't update the crtc timings any more properly, so do that again.
v2: Remove more redundant clearing, spotted by Ville.
v3: Actually make it compile. Oops.
v4: Use a temporary structure to fill in the mode and copy it over
with drm_mode_copy. This will ensure we don't clobber the mode list or
id. Suggested by Ville.
Cc: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Use the = {}; structure clearing instead of memset as
suggested by Ville.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Instead of just a flag bit for each of the positive/negative sync
modes drm actually uses a separate flag for each ... This upsets the
modeset checker since the adjusted mode filled out at modeset time
doesn't match the one reconstructed at check time (since the
->get_config callback already gets this right).
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Knut Petersen <Knut_Petersen@t-online.de>
References: http://www.gossamer-threads.com/lists/linux/kernel/1778688?do=post_view_threaded
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Replace "%8x" with "%08x".
The hex number should be shown with zero stuffed instead of spaces.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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My g33 here seems to be shockingly good at hitting them all. This time
around kms_flip/flip-vs-panning-vs-hang blows up:
intel_crtc_wait_for_pending_flips correctly checks for gpu hangs and
if a gpu hang is pending aborts the wait for outstanding flips so that
the setcrtc call will succeed and release the crtc mutex. And the gpu
hang handler needs that lock in intel_display_handle_reset to be able
to complete outstanding flips.
The problem is that we can race in two ways:
- Waiters on the dev_priv->pending_flip_queue aren't woken up after
we've the reset as pending, but before we actually start the reset
work. This means that the waiter doesn't notice the pending reset
and hence will keep on hogging the locks.
Like with dev->struct_mutex and the ring->irq_queue wait queues we
there need to wake up everyone that potentially holds a lock which
the reset handler needs.
- intel_display_handle_reset was called _after_ we've already
signalled the completion of the reset work. Which means a waiter
could sneak in, grab the lock and never release it (since the
pageflips won't ever get released).
Similar to resetting the gem state all the reset work must complete
before we update the reset counter. Contrary to the gem reset we
don't need to have a second explicit wake up call since that will
have happened already when completing the pageflips. We also don't
have any issues that the completion happens while the reset state is
still pending - wait_for_pending_flips is only there to ensure we
display the right frame. After a gpu hang&reset events such
guarantees are out the window anyway. This is in contrast to the gem
code where too-early wake-up would result in unnecessary restarting
of ioctls.
Also, since we've gotten these various deadlocks and ordering
constraints wrong so often throw copious amounts of comments at the
code.
This deadlock regression has been introduced in the commit which added
the pageflip reset logic to the gpu hang work:
commit 96a02917a0131e52efefde49c2784c0421d6c439
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon Feb 18 19:08:49 2013 +0200
drm/i915: Finish page flips and update primary planes after a GPU reset
v2:
- Add comments to explain how the wake_up serves as memory barriers
for the atomic_t reset counter.
- Improve the comments a bit as suggested by Chris Wilson.
- Extract the wake_up calls before/after the reset into a little
i915_error_wake_up and unconditionally wake up the
pending_flip_queue waiters, again as suggested by Chris Wilson.
v3: Throw copious amounts of comments at i915_error_wake_up as
suggested by Chris Wilson.
Cc: stable@vger.kernel.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Detangle the additional state of whether or not the hw has the pfit
enabled from whether it has zero size. This allows us to cleanly
distinguish in the code when we expect the pfit to be enabled (for
Haswell pc8), and when the BIOS is confused and needs sanitizing.
Reported-by: shui yanwei <yangweix.shui@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68251
Tested-by: shui yanwei <yangweix.shui@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This reverts commit 7c510133d93dd6f15ca040733ba7b2891ed61fd1.
Well looks like not enough digging was done, libdrm_nouveau before 2.4.33
used contexts,
292da616fe1f936ca78a3fa8e1b1b19883e343b6 nouveau: pull in major libdrm rewrite
got rid of them,
Reported-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Reported-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pull block IO fixes from Jens Axboe:
"After merge window, no new stuff this time only a collection of neatly
confined and simple fixes"
* 'for-3.12/core' of git://git.kernel.dk/linux-block:
cfq: explicitly use 64bit divide operation for 64bit arguments
block: Add nr_bios to block_rq_remap tracepoint
If the queue is dying then we only call the rq->end_io callout. This leaves bios setup on the request, because the caller assumes when the blk_execute_rq_nowait/blk_execute_rq call has completed that the rq->bios have been cleaned up.
bio-integrity: Fix use of bs->bio_integrity_pool after free
blkcg: relocate root_blkg setting and clearing
block: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)
block: trace all devices plug operation
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'samples' is 64bit operant, but do_div() second parameter is 32.
do_div silently truncates high 32 bits and calculated result
is invalid.
In case if low 32bit of 'samples' are zeros then do_div() produces
kernel crash.
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Adding the number of bios in a remapped request to 'block_rq_remap'
tracepoint.
Request remapper clones bios in a request to track the completion
status of each bio. So the number of bios can be useful information
for investigation.
Related discussions:
http://www.redhat.com/archives/dm-devel/2013-August/msg00084.html
http://www.redhat.com/archives/dm-devel/2013-September/msg00024.html
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This leaves bios setup on the request, because the caller assumes when
the blk_execute_rq_nowait/blk_execute_rq call has completed that
the rq->bios have been cleaned up.
This patch has blk_execute_rq_nowait use __blk_end_request_all
to free bios and also call rq->end_io.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This fixes a copy and paste error introduced by 9f060e2231
("block: Convert integrity to bvec_alloc_bs()").
Found by Coverity (CID 1020654).
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kent Overstreet <koverstreet@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Hello, Jens.
The original thread can be read from
http://thread.gmane.org/gmane.linux.kernel.cgroups/8937
While it leads to oops, given that it only triggers under specific
configurations which aren't common. I don't think it's necessary to
backport it through -stable and merging it during the coming merge
window should be enough.
Thanks!
----- 8< -----
Currently, q->root_blkg and q->root_rl.blkg are set from
blkcg_activate_policy() and cleared from blkg_destroy_all(). This
doesn't necessarily coincide with the lifetime of the root blkcg_gq
leading to the following oops when blkcg is enabled but no policy is
activated because __blk_queue_next_rl() malfunctions expecting the
root_blkg pointers to be set.
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff810c58cb>] __wake_up_common+0x2b/0x90
PGD 60f7a9067 PUD 60f4c9067 PMD 0
Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
gsmi: Log Shutdown Reason 0x03
Modules linked in: act_mirred cls_tcindex cls_prioshift sch_dsmark xt_multiport iptable_mangle sata_mv elephant elephant_dev_num cdc_acm uhci_hcd ehci_hcd i2c_d
CPU: 9 PID: 41382 Comm: iSCSI-write- Not tainted 3.11.0-dbg-DEV #19
Hardware name: Intel XXX
task: ffff88060d16eec0 ti: ffff88060d170000 task.ti: ffff88060d170000
RIP: 0010:[<ffffffff810c58cb>] [<ffffffff810c58cb>] __wake_up_common+0x2b/0x90
RSP: 0000:ffff88060d171818 EFLAGS: 00010096
RAX: 0000000000000082 RBX: ffff880baa3dee60 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff880baa3dee60
RBP: ffff88060d171858 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffff880baa3dee98
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000003
FS: 00007f977cba6700(0000) GS:ffff880c79c60000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 000000060f7a5000 CR4: 00000000000007e0
Stack:
0000000000000082 0000000000000000 ffff88060d171858 ffff880baa3dee60
0000000000000082 0000000000000003 0000000000000000 0000000000000000
ffff88060d171898 ffffffff810c7848 ffff88060d171888 ffff880bde4bc4b8
Call Trace:
[<ffffffff810c7848>] __wake_up+0x48/0x70
[<ffffffff8131da53>] __blk_drain_queue+0x123/0x190
[<ffffffff8131dbb5>] blk_cleanup_queue+0xf5/0x210
[<ffffffff8141877a>] __scsi_remove_device+0x5a/0xd0
[<ffffffff81418824>] scsi_remove_device+0x34/0x50
[<ffffffff814189cb>] scsi_remove_target+0x16b/0x220
[<ffffffff814210f1>] __iscsi_unbind_session+0xd1/0x1b0
[<ffffffff814212b2>] iscsi_remove_session+0xe2/0x1c0
[<ffffffff814213a6>] iscsi_destroy_session+0x16/0x60
[<ffffffff81423a59>] iscsi_session_teardown+0xd9/0x100
[<ffffffff8142b75a>] iscsi_sw_tcp_session_destroy+0x5a/0xb0
[<ffffffff81420948>] iscsi_if_rx+0x10e8/0x1560
[<ffffffff81573335>] netlink_unicast+0x145/0x200
[<ffffffff815736f3>] netlink_sendmsg+0x303/0x410
[<ffffffff81528196>] sock_sendmsg+0xa6/0xd0
[<ffffffff815294bc>] ___sys_sendmsg+0x38c/0x3a0
[<ffffffff811ea840>] ? fget_light+0x40/0x160
[<ffffffff811ea899>] ? fget_light+0x99/0x160
[<ffffffff811ea840>] ? fget_light+0x40/0x160
[<ffffffff8152bc79>] __sys_sendmsg+0x49/0x90
[<ffffffff8152bcd2>] SyS_sendmsg+0x12/0x20
[<ffffffff815fb642>] system_call_fastpath+0x16/0x1b
Code: 66 66 66 66 90 55 48 89 e5 41 57 41 89 f7 41 56 41 89 ce 41 55 41 54 4c 8d 67 38 53 48 83 ec 18 89 55 c4 48 8b 57 38 4c 89 45 c8 <4c> 8b 2a 48 8d 42 e8 49
Fix it by moving r->root_blkg and q->root_rl.blkg setting to
blkg_create() and clearing to blkg_destroy() so that they area
initialized when a root blkg is created and cleared when destroyed.
Reported-and-tested-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Use the helper function instead of __GFP_ZERO.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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In func blk_queue_bio, if list of plug is empty,it will call
blk_trace_plug.
If process deal with a single device,it't ok.But if process deal with
multi devices,it only trace the first device.
Using request_count to judge, it can soleve this problem.
In addition, i modify the comment.
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"These are mostly bug fixes and a two small performance fixes. The
most important of the bunch are Josef's fix for a snapshotting
regression and Mark's update to fix compile problems on arm"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (25 commits)
Btrfs: create the uuid tree on remount rw
btrfs: change extent-same to copy entire argument struct
Btrfs: dir_inode_operations should use btrfs_update_time also
btrfs: Add btrfs: prefix to kernel log output
btrfs: refuse to remount read-write after abort
Btrfs: btrfs_ioctl_default_subvol: Revert back to toplevel subvolume when arg is 0
Btrfs: don't leak transaction in btrfs_sync_file()
Btrfs: add the missing mutex unlock in write_all_supers()
Btrfs: iput inode on allocation failure
Btrfs: remove space_info->reservation_progress
Btrfs: kill delay_iput arg to the wait_ordered functions
Btrfs: fix worst case calculator for space usage
Revert "Btrfs: rework the overcommit logic to be based on the total size"
Btrfs: improve replacing nocow extents
Btrfs: drop dir i_size when adding new names on replay
Btrfs: replay dir_index items before other items
Btrfs: check roots last log commit when checking if an inode has been logged
Btrfs: actually log directory we are fsync()'ing
Btrfs: actually limit the size of delalloc range
Btrfs: allocate the free space by the existed max extent size when ENOSPC
...
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Users have been complaining of the uuid tree stuff warning that there is no uuid
root when trying to do snapshot operations. This is because if you mount -o ro
we will not create the uuid tree. But then if you mount -o rw,remount we will
still not create it and then any subsequent snapshot/subvol operations you try
to do will fail gloriously. Fix this by creating the uuid_root on remount rw if
it was not already there. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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btrfs_ioctl_file_extent_same() uses __put_user_unaligned() to copy some data
back to it's argument struct. Unfortunately, not all architectures provide
__put_user_unaligned(), so compiles break on them if btrfs is selected.
Instead, just copy the whole struct in / out at the start and end of
operations, respectively.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Commit 2bc5565286121d2a77ccd728eb3484dff2035b58 (Btrfs: don't update atime on
RO subvolumes) ensures that the access time of an inode is not updated when
the inode lives in a read-only subvolume.
However, if a directory on a read-only subvolume is accessed, the atime is
updated. This results in a write operation to a read-only subvolume. I
believe that access times should never be updated on read-only subvolumes.
To reproduce:
# mkfs.btrfs -f /dev/dm-3
(...)
# mount /dev/dm-3 /mnt
# btrfs subvol create /mnt/sub
Create subvolume '/mnt/sub'
# mkdir /mnt/sub/dir
# echo "abc" > /mnt/sub/dir/file
# btrfs subvol snapshot -r /mnt/sub /mnt/rosnap
Create a readonly snapshot of '/mnt/sub' in '/mnt/rosnap'
# stat /mnt/rosnap/dir
File: `/mnt/rosnap/dir'
Size: 8 Blocks: 0 IO Block: 4096 directory
Device: 16h/22d Inode: 257 Links: 1
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-09-11 07:21:49.389157126 -0400
Modify: 2013-09-11 07:22:02.330156079 -0400
Change: 2013-09-11 07:22:02.330156079 -0400
# ls /mnt/rosnap/dir
file
# stat /mnt/rosnap/dir
File: `/mnt/rosnap/dir'
Size: 8 Blocks: 0 IO Block: 4096 directory
Device: 16h/22d Inode: 257 Links: 1
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-09-11 07:22:56.797151670 -0400
Modify: 2013-09-11 07:22:02.330156079 -0400
Change: 2013-09-11 07:22:02.330156079 -0400
Reported-by: Koen De Wit <koen.de.wit@oracle.com>
Signed-off-by: Guangyu Sun <guangyu.sun@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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The kernel log entries for device label %s and device fsid %pU
are missing the btrfs: prefix. Add those here.
Signed-off-by: Frank Holton <fholton@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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