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The flags element of clk_init_data was never initialized for mmc-
phase-clocks resulting in the element containing a random value
and thus possibly enabling unwanted clock flags.
Fixes: 89bf26cbc1a0 ("clk: rockchip: Add support for the mmc clock phases using the framework")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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In case of error, the function syscon_node_to_regmap() 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>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Fixes: 0bbd72b4c64f ("clk: Add Oxford Semiconductor OXNAS Standard Clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix an expression in the ACPI PCI IRQ management code added by a
recent commit that overlooked missing parens in it, so the result of
the computation is incorrect in some cases (Sinan Kaya)"
* tag 'acpi-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI,PCI,IRQ: correct operator precedence
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The omitted parenthesis prevents the addition operation when
acpi_penalize_isa_irq function is called.
Fixes: 103544d86976 (ACPI,PCI,IRQ: reduce resource requirements)
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Three cpufreq fixes, one in the core (stable-candidate) and two in
drivers (intel_pstate and cpufreq-dt).
Specifics:
- Fix a recent intel_pstate regression that caused the number of
wakeups to increase significantly on an idle system in some cases
due to excessive synchronize_sched() invocations (Rafael Wysocki).
- Fix unnecessary invocations of WARN_ON() in the cpufreq core after
cpufreq has been suspended introduced during the 4.6 cycla (Rafael
Wysocki).
- Fix an error code path in the cpufreq-dt-platdev driver that
forgets to drop a reference to a DT node (Masahiro Yamada)"
* tag 'pm-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Avoid false-positive WARN_ON()s in cpufreq_update_policy()
cpufreq: dt: call of_node_put() before error out
intel_pstate: Do not clear utilization update hooks on policy changes
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CPU notifications from the firmware coming in when cpufreq is
suspended cause cpufreq_update_current_freq() to return 0 which
triggers the WARN_ON() in cpufreq_update_policy() for no reason.
Avoid that by checking cpufreq_suspended before calling
cpufreq_update_current_freq().
Fixes: c9d9c929e674 (cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended set)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.6+ <stable@vger.kernel.org> # 4.6+
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If of_match_node() fails, this init function bails out without
calling of_node_put().
Also change of_node_put(of_root) to of_node_put(np); both of them
hold the same pointer, but it seems better to call of_node_put()
against the node returned by of_find_node_by_path().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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intel_pstate_set_policy() is invoked by the cpufreq core during
driver initialization, on changes of policy attributes (minimim and
maximum frequency, for example) via sysfs and via CPU notifications
from the platform firmware. On some platforms the latter may occur
relatively often.
Commit bb6ab52f2bef (intel_pstate: Do not set utilization update hook
too early) made intel_pstate_set_policy() clear the CPU's utilization
update hook before updating the policy attributes for it (and set the
hook again after doind that), but that involves invoking
synchronize_sched() and adds overhead to the CPU notifications
mentioned above and to the sched-RCU handling in general.
That extra overhead is arguably not necessary, because updating
policy attributes when the CPU's utilization update hook is active
should not lead to any adverse effects, so drop the clearing of
the hook from intel_pstate_set_policy() and make it check if
the hook has been set already when attempting to set it.
Fixes: bb6ab52f2bef (intel_pstate: Do not set utilization update hook too early)
Reported-by: Jisheng Zhang <jszhang@marvell.com>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
Tested-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"Tmpfs readdir throughput regression fix (this cycle) + some -stable
fodder all over the place.
One missing bit is Miklos' tonight locks.c fix - NFS folks had already
grabbed that one by the time I woke up ;-)"
[ The locks.c fix came through the nfsd tree just moments ago ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
namespace: update event counter when umounting a deleted dentry
9p: use file_dentry()
ceph: fix d_obtain_alias() misuses
lockless next_positive()
libfs.c: new helper - next_positive()
dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock
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- m_start() in fs/namespace.c expects that ns->event is incremented each
time a mount added or removed from ns->list.
- umount_tree() removes items from the list but does not increment event
counter, expecting that it's done before the function is called.
- There are some codepaths that call umount_tree() without updating
"event" counter. e.g. from __detach_mounts().
- When this happens m_start may reuse a cached mount structure that no
longer belongs to ns->list (i.e. use after free which usually leads
to infinite loop).
This change fixes the above problem by incrementing global event counter
before invoking umount_tree().
Change-Id: I622c8e84dcb9fb63542372c5dbf0178ee86bb589
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Ulanov <andreyu@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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v9fs may be used as lower layer of overlayfs and accessing f_path.dentry
can lead to a crash. In this case it's a NULL pointer dereference in
p9_fid_create().
Fix by replacing direct access of file->f_path.dentry with the
file_dentry() accessor, which will always return a native object.
Reported-by: Alessio Igor Bogani <alessioigorbogani@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Tested-by: Alessio Igor Bogani <alessioigorbogani@gmail.com>
Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Cc: <stable@vger.kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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on failure d_obtain_alias() will have done iput()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Return nth positive child after given or NULL if there's
less than n left. dcache_readdir() and dcache_dir_lseek()
switched to it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Make sure that directory is locked shared in dcache_dir_lseek();
for dcache_readdir() it's already tru, and that's enough to make
simple_positive() stable.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull lockd/locks fixes from Bruce Fields:
"One fix for lockd soft lookups in an error path, and one fix for file
leases on overlayfs"
* tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux:
locks: use file_inode()
lockd: unregister notifier blocks if the service fails to come up completely
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(Another one for the f_path debacle.)
ltp fcntl33 testcase caused an Oops in selinux_file_send_sigiotask.
The reason is that generic_add_lease() used filp->f_path.dentry->inode
while all the others use file_inode(). This makes a difference for files
opened on overlayfs since the former will point to the overlay inode the
latter to the underlying inode.
So generic_add_lease() added the lease to the overlay inode and
generic_delete_lease() removed it from the underlying inode. When the file
was released the lease remained on the overlay inode's lock list, resulting
in use after free.
Reported-by: Eryu Guan <eguan@redhat.com>
Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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If the lockd service fails to start up then we need to be sure that the
notifier blocks are not registered, otherwise a subsequent start of the
service could cause the same notifier to be registered twice, leading to
soft lockups.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 0751ddf77b6a "lockd: Register callbacks on the inetaddr_chain..."
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull more MFD fixes from Lee Jones:
"Apologies for missing these from the first pull request.
Final patches fixing Reset API change"
* tag 'mfd-fixes-4.7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
usb: dwc3: st: Use explicit reset_control_get_exclusive() API
phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
phy: miphy28lp: Inform the reset framework that our reset line may be shared
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We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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On the STiH410 B2120 development board the MiPHY28lp shares its reset
line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device
(DRD). New functionality in the reset subsystems forces consumers to
be explicit when requesting shared/exclusive reset lines.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1/ Two regression fixes since v4.6: one for the byte order of a sysfs
attribute (bz121161) and another for QEMU 2.6's NVDIMM _DSM (ACPI
Device Specific Method) implementation that gets tripped up by new
auto-probing behavior in the NFIT driver.
2/ A fix tagged for -stable that stops the kernel from
clobbering/ignoring changes to the configuration of a 'pfn'
instance ("struct page" driver). For example changing the
alignment from 2M to 1G may silently revert to 2M if that value is
currently stored on media.
3/ A fix from Eric for an xfstests failure in dax. It is not
currently tagged for -stable since it requires an 8-exabyte file
system to trigger, and there appear to be no user visible side
effects"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: fix format interface code byte order
dax: fix offset overflow in dax_io
acpi, nfit: fix acpi_check_dsm() vs zero functions implemented
libnvdimm, pfn, dax: fix initialization vs autodetect for mode + alignment
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Per JEDEC Annex L Release 3 the SPD data is:
Bits 9~5 00 000 = Function Undefined
00 001 = Byte addressable energy backed
00 010 = Block addressed
00 011 = Byte addressable, no energy backed
All other codes reserved
Bits 4~0 0 0000 = Proprietary interface
0 0001 = Standard interface 1
All other codes reserved; see Definitions of Functions
...and per the ACPI 6.1 spec:
byte0: Bits 4~0 (0 or 1)
byte1: Bits 9~5 (1, 2, or 3)
...so a format interface code displayed as 0x301 should be stored in the
nfit as (0x1, 0x3), little-endian.
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Robert Elliott <elliott@hpe.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=121161
Fixes: 30ec5fd464d5 ("nfit: fix format interface code byte order per ACPI6.1")
Fixes: 5ad9a7fde07a ("acpi/nfit: Update nfit driver to comply with ACPI 6.1")
Reported-by: Kristin Jacque <kristin.jacque@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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This isn't functionally apparent for some reason, but
when we test io at extreme offsets at the end of the loff_t
rang, such as in fstests xfs/071, the calculation of
"max" in dax_io() can be wrong due to pos + size overflowing.
For example,
# xfs_io -c "pwrite 9223372036854771712 512" /mnt/test/file
enters dax_io with:
start 0x7ffffffffffff000
end 0x7ffffffffffff200
and the rounded up "size" variable is 0x1000. This yields:
pos + size 0x8000000000000000 (overflows loff_t)
end 0x7ffffffffffff200
Due to the overflow, the min() function picks the wrong
value for the "max" variable, and when we send (max - pos)
into i.e. copy_from_iter_pmem() it is also the wrong value.
This somehow(tm) gets magically absorbed without incident,
probably because iter->count is correct. But it seems best
to fix it up properly by comparing the two values as
unsigned.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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QEMU 2.6 implements nascent support for nvdimm DSMs. Depending on
configuration it may only implement the function0 dsm to indicate that
no other DSMs are available. Commit 31eca76ba2fc "nfit, libnvdimm:
limited/whitelisted dimm command marshaling mechanism" breaks QEMU, but
QEMU is spec compliant. Per the spec the way to indicate that no
functions are supported is:
If Function Index is zero, the return is a buffer containing one bit
for each function index, starting with zero. Bit 0 indicates whether
there is support for any functions other than function 0 for the
specified UUID and Revision ID. If set to zero, no functions are
supported (other than function zero) for the specified UUID and
Revision ID.
Update the nfit driver to determine the family (interface UUID) without
requiring the implementation to define any other functions, i.e.
short-circuit acpi_check_dsm() to succeed per the spec. The nfit driver
appears to be the only user passing funcs==0 to acpi_check_dsm(), so
this behavior change of the common routine should be limited to the
probing done by the nfit driver.
Cc: Len Brown <lenb@kernel.org>
Cc: Jerry Hoemann <jerry.hoemann@hpe.com>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
Fixes: 31eca76ba2fc ("nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism")
Reported-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Tested-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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The updated ndctl unit tests discovered that if a pfn configuration with
a 4K alignment is read from the namespace, that alignment will be
ignored in favor of the default 2M alignment. The result is that the
configuration will fail initialization with a message like:
dax6.1: bad offset: 0x22000 dax disabled align: 0x200000
Fix this by allowing the alignment read from the info block to override
the default which is 2M not 0 in the autodetect path. This also fixes a
similar problem with the mode and alignment settings silently being
overwritten by the kernel when userspace has changed it. We now will
either overwrite the info block if userspace changes the uuid or fail
and warn if a live setting disagrees with the info block.
Cc: <stable@vger.kernel.org>
Cc: Micah Parrish <micah.parrish@hpe.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are a few small staging and iio driver fixes for 4.7-rc6.
Nothing major here, just a number of small fixes, all have been in
linux-next for a while, and the full details are in the shortlog"
* tag 'staging-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio:ad7266: Fix probe deferral for vref
iio:ad7266: Fix support for optional regulators
iio:ad7266: Fix broken regulator error handling
iio: accel: kxsd9: fix the usage of spi_w8r8()
staging: iio: accel: fix error check
staging: iio: ad5933: fix order of cycle conditions
staging: iio: fix ad7606_spi regression
iio: inv_mpu6050: Fix use-after-free in ACPI code
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Third set of fixes for IIO in the 4.7 cycle.
A couple of really old bugs and the results of Mark taking a close look at
some nasty regulator handling.
* ad7266
- Fix broken regulator handling that won't play well with dummy regulators.
- Correctly handle and optional regulator.
- Fix probe deferral for the vref regulator.
* kxsd9
- Fix a wrong error check that leads to an inability to write or read
the scale.
* sca3000
- Fix a wrong error check that leads to an inability to read back the
sampling frequency.
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Currently the ad7266 driver treats any failure to get vref as though the
regulator were not present but this means that if probe deferral is
triggered the driver will act as though the regulator were not present.
Instead only use the internal reference if we explicitly got -ENODEV which
is what is returned for absent regulators.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The ad7266 driver attempts to support deciding between the use of internal
and external power supplies by checking to see if an error is returned when
requesting the regulator. This doesn't work with the current code since the
driver uses a normal regulator_get() which is for non-optional supplies
and so assumes that if a regulator is not provided by the platform then
this is a bug in the platform integration and so substitutes a dummy
regulator. Use regulator_get_optional() instead which indicates to the
framework that the regulator may be absent and provides a dummy regulator
instead.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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All regulator_get() variants return either a pointer to a regulator or an
ERR_PTR() so testing for NULL makes no sense and may lead to bugs if we
use NULL as a valid regulator. Fix this by using IS_ERR() as expected.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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These two spi_w8r8() calls return a value with is used by the code
following the error check. The dubious use was caused by a cleanup
patch.
Fixes: d34dbee8ac8e ("staging:iio:accel:kxsd9 cleanup and conversion to iio_chan_spec.")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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sca3000_read_ctrl_reg() returns a negative number on failure, check for
this instead of zero.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 4.7 cycle.
This includes one tracked regression (Arnd's patch for the ad7606).
The other two have I think always been broken.
* inv_mpu6050
- Fix a use after free in the ACPI code.
* ad5933
- The code for setting the cycles had a bug that meant it was simply wrong.
* ad7606_spi
- Fix a regression that got introduced in a buggy cleanup of a sparse
warning.
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Correctly handle the settling time cycles value. The else branch is an
impossible condition, > 1022 in the else branch of > 511. Flipping the order.
Based on the Table 13 at the bottom of Page 25 of the Data Sheet:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5933.pdf
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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As pointed out by Geert Uytterhoeven, the patch was incorrect
and breaks the driver, which was fortunately pointed out by
this gcc warning:
drivers/staging/iio/adc/ad7606_spi.c: In function ‘ad7606_spi_read_block’:
drivers/staging/iio/adc/ad7606_spi.c:34: warning: ‘data’ is used uninitialized in this function
The effect of the patch is that the data is copied into
a random memory location (from the uninitialized pointer)
instead of being byteswapped in place.
This adds the initialization for the 'data' variable back
to restore the original behavior.
Cc: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Fixes: 87787e5ef727 ("Staging: iio: Fix sparse endian warning")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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In some cases this can result in incorrectly returning a negative value
from asus_acpi_get_sensor_info and the AK8963 magnetometer failing to
show up.
Note cpm is an alias for buffer.pointer which isn't apparent in this
patch on it's own.
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are two tty fixes for some reported issues. One resolves a crash
in devpts, and the other resolves a problem with the fbcon cursor
blink causing lockups.
Both have been in linux-next with no reported problems"
* tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
devpts: fix null pointer dereference on failed memory allocation
tty: vt: Fix soft lockup in fbcon cursor blink timer.
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An ENOMEM when creating a pair tty in tty_ldisc_setup causes a null
pointer dereference in devpts_kill_index because tty->link->driver_data
is NULL. The oops was triggered with the pty stressor in stress-ng when
in a low memory condition.
tty_init_dev tries to clean up a tty_ldisc_setup ENOMEM error by calling
release_tty, however, this ultimately tries to clean up the NULL pair'd
tty in pty_unix98_remove, triggering the Oops.
Add check to pty_unix98_remove to only clean up fsi if it is not NULL.
Ooops:
[ 23.020961] Oops: 0000 [#1] SMP
[ 23.020976] Modules linked in: ppdev snd_hda_codec_generic snd_hda_intel snd_hda_codec parport_pc snd_hda_core snd_hwdep parport snd_pcm input_leds joydev snd_timer serio_raw snd soundcore i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel qxl aes_x86_64 ttm lrw gf128mul glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect psmouse sysimgblt floppy fb_sys_fops drm pata_acpi jitterentropy_rng drbg ansi_cprng
[ 23.020978] CPU: 0 PID: 1452 Comm: stress-ng-pty Not tainted 4.7.0-rc4+ #2
[ 23.020978] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 23.020979] task: ffff88007ba30000 ti: ffff880078ea8000 task.ti: ffff880078ea8000
[ 23.020981] RIP: 0010:[<ffffffff813f11ff>] [<ffffffff813f11ff>] ida_remove+0x1f/0x120
[ 23.020981] RSP: 0018:ffff880078eabb60 EFLAGS: 00010a03
[ 23.020982] RAX: 4444444444444567 RBX: 0000000000000000 RCX: 000000000000001f
[ 23.020982] RDX: 000000000000014c RSI: 000000000000026f RDI: 0000000000000000
[ 23.020982] RBP: ffff880078eabb70 R08: 0000000000000004 R09: 0000000000000036
[ 23.020983] R10: 000000000000026f R11: 0000000000000000 R12: 000000000000026f
[ 23.020983] R13: 000000000000026f R14: ffff88007c944b40 R15: 000000000000026f
[ 23.020984] FS: 00007f9a2f3cc700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
[ 23.020984] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 23.020985] CR2: 0000000000000010 CR3: 000000006c81b000 CR4: 00000000001406f0
[ 23.020988] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 23.020988] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 23.020988] Stack:
[ 23.020989] 0000000000000000 000000000000026f ffff880078eabb90 ffffffff812a5a99
[ 23.020990] 0000000000000000 00000000fffffff4 ffff880078eabba8 ffffffff814f9cbe
[ 23.020991] ffff88007965c800 ffff880078eabbc8 ffffffff814eef43 fffffffffffffff4
[ 23.020991] Call Trace:
[ 23.021000] [<ffffffff812a5a99>] devpts_kill_index+0x29/0x50
[ 23.021002] [<ffffffff814f9cbe>] pty_unix98_remove+0x2e/0x50
[ 23.021006] [<ffffffff814eef43>] release_tty+0xb3/0x1b0
[ 23.021007] [<ffffffff814f18d4>] tty_init_dev+0xd4/0x1c0
[ 23.021011] [<ffffffff814f9fae>] ptmx_open+0xae/0x190
[ 23.021013] [<ffffffff812254ef>] chrdev_open+0xbf/0x1b0
[ 23.021015] [<ffffffff8121d973>] do_dentry_open+0x203/0x310
[ 23.021016] [<ffffffff81225430>] ? cdev_put+0x30/0x30
[ 23.021017] [<ffffffff8121ee44>] vfs_open+0x54/0x80
[ 23.021018] [<ffffffff8122b8fc>] ? may_open+0x8c/0x100
[ 23.021019] [<ffffffff8122f26b>] path_openat+0x2eb/0x1440
[ 23.021020] [<ffffffff81230534>] ? putname+0x54/0x60
[ 23.021022] [<ffffffff814f6f97>] ? n_tty_ioctl_helper+0x27/0x100
[ 23.021023] [<ffffffff81231651>] do_filp_open+0x91/0x100
[ 23.021024] [<ffffffff81230596>] ? getname_flags+0x56/0x1f0
[ 23.021026] [<ffffffff8123fc66>] ? __alloc_fd+0x46/0x190
[ 23.021027] [<ffffffff8121f1e4>] do_sys_open+0x124/0x210
[ 23.021028] [<ffffffff8121f2ee>] SyS_open+0x1e/0x20
[ 23.021035] [<ffffffff81845576>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 23.021044] Code: 63 28 45 31 e4 eb dd 0f 1f 44 00 00 55 4c 63 d6 48 ba 89 88 88 88 88 88 88 88 4c 89 d0 b9 1f 00 00 00 48 f7 e2 48 89 e5 41 54 53 <8b> 47 10 48 89 fb 8d 3c c5 00 00 00 00 48 c1 ea 09 b8 01 00 00
[ 23.021045] RIP [<ffffffff813f11ff>] ida_remove+0x1f/0x120
[ 23.021045] RSP <ffff880078eabb60>
[ 23.021046] CR2: 0000000000000010
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We are getting somewhat random soft lockups with this signature:
[ 86.992215] [<fffffc00080935e0>] el1_irq+0xa0/0x10c
[ 86.997082] [<fffffc000841822c>] cursor_timer_handler+0x30/0x54
[ 87.002991] [<fffffc000810ec44>] call_timer_fn+0x54/0x1a8
[ 87.008378] [<fffffc000810ef88>] run_timer_softirq+0x1c4/0x2bc
[ 87.014200] [<fffffc000809077c>] __do_softirq+0x114/0x344
[ 87.019590] [<fffffc00080af45c>] irq_exit+0x74/0x98
[ 87.024458] [<fffffc00080fac20>] __handle_domain_irq+0x98/0xfc
[ 87.030278] [<fffffc000809056c>] gic_handle_irq+0x94/0x190
This is caused by the vt visual_init() function calling into
fbcon_init() with a vc_cur_blink_ms value of zero. This is a
transient condition, as it is later set to a non-zero value. But, if
the timer happens to expire while the blink rate is zero, it goes into
an endless loop, and we get soft lockup.
The fix is to initialize vc_cur_blink_ms before calling the con_init()
function.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: stable@vger.kernel.org
Acked-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Scot Doyle <lkml14@scotdoyle.com>
Tested-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB and PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.7-rc6.
Nothing major here, all are described in the shortlog below. All have
been in linux-next with no reported issues"
* tag 'usb-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: don't free bandwidth_mutex too early
USB: EHCI: declare hostpc register as zero-length array
phy-sun4i-usb: Fix irq free conditions to match request conditions
phy: bcm-ns-usb2: checking the wrong variable
phy-sun4i-usb: fix missing __iomem *
phy: phy-sun4i-usb: Fix optional gpios failing probe
phy: rockchip-dp: fix return value check in rockchip_dp_phy_probe()
phy: rcar-gen3-usb2: fix unexpected repeat interrupts of VBUS change
usb: common: otg-fsm: add license to usb-otg-fsm
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The USB core contains a bug that can show up when a USB-3 host
controller is removed. If the primary (USB-2) hcd structure is
released before the shared (USB-3) hcd, the core will try to do a
double-free of the common bandwidth_mutex.
The problem was described in graphical form by Chung-Geol Kim, who
first reported it:
=================================================
At *remove USB(3.0) Storage
sequence <1> --> <5> ((Problem Case))
=================================================
VOLD
------------------------------------|------------
(uevent)
________|_________
|<1> |
|dwc3_otg_sm_work |
|usb_put_hcd |
|peer_hcd(kref=2)|
|__________________|
________|_________
|<2> |
|New USB BUS #2 |
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|peer_hcd(kref=1) |
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--(Link)-bandXX_mutex|
| |__________________|
|
___________________ |
|<3> | |
|dwc3_otg_sm_work | |
|usb_put_hcd | |
|primary_hcd(kref=1)| |
|___________________| |
_________|_________ |
|<4> | |
|New USB BUS #1 | |
|hcd_release | |
|primary_hcd(kref=0)| |
| | |
|bandXX_mutex(free) |<-
|___________________|
(( VOLD ))
______|___________
|<5> |
| SCSI |
|usb_put_hcd |
|peer_hcd(kref=0) |
|*hcd_release |
|bandXX_mutex(free*)|<- double free
|__________________|
=================================================
This happens because hcd_release() frees the bandwidth_mutex whenever
it sees a primary hcd being released (which is not a very good idea
in any case), but in the course of releasing the primary hcd, it
changes the pointers in the shared hcd in such a way that the shared
hcd will appear to be primary when it gets released.
This patch fixes the problem by changing hcd_release() so that it
deallocates the bandwidth_mutex only when the _last_ hcd structure
referencing it is released. The patch also removes an unnecessary
test, so that when an hcd is released, both the shared_hcd and
primary_hcd pointers in the hcd's peer will be cleared.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Chung-Geol Kim <chunggeol.kim@samsung.com>
Tested-by: Chung-Geol Kim <chunggeol.kim@samsung.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The HOSTPC extension registers found in some EHCI implementations form
a variable-length array, with one element for each port. Therefore
the hostpc field in struct ehci_regs should be declared as a
zero-length array, not a single-element array.
This fixes a problem reported by UBSAN.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
Tested-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-linus
Kishon writes:
phy: for 4.7-rc5
*) Fix in sun4i-usb phy driver to properly handle the return value of
gpiod_to_irq
*) Fix a sparse warning in sun4i-usb phy driver
*) Fix bcm-ns-usb2 phy driver to check the correct variable
*) Fix spurious interrupts during VBUS change in rcar-gen3-usb2 phy
driver
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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commit 5cf700ac9d50 ("phy: phy-sun4i-usb: Fix optional gpios failing
probe")
changed the condition under which irqs are requested, but omitted matching
changes to sun4i_usb_phy_remove(). This commit fixes this.
Fixes: 5cf700ac9d50 ("phy: phy-sun4i-usb: Fix optional gpios failing probe")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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We intended to test "usb2->phy" here instead of "dev".
Fixes: d3feb4067335 ('phy: bcm-ns-usb2: new driver for USB 2.0 PHY on Northstar')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Fix the missing __iomem attribute in sun4i_usb_phy_write()
function. This fixes the following sparse warnings:
drivers/phy/phy-sun4i-usb.c:178:39: warning: incorrect type in initializer (different address spaces)
drivers/phy/phy-sun4i-usb.c:178:39: expected void *phyctl
drivers/phy/phy-sun4i-usb.c:178:39: got void [noderef] <asn:2>*
drivers/phy/phy-sun4i-usb.c:185:17: warning: incorrect type in argument 2 (different address spaces)
drivers/phy/phy-sun4i-usb.c:185:17: expected void volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:185:17: got void *phyctl
drivers/phy/phy-sun4i-usb.c:189:24: warning: incorrect type in argument 1 (different address spaces)
drivers/phy/phy-sun4i-usb.c:189:24: expected void const volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:189:24: got void *phyctl
drivers/phy/phy-sun4i-usb.c:196:17: warning: incorrect type in argument 2 (different address spaces)
drivers/phy/phy-sun4i-usb.c:196:17: expected void volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:196:17: got void *phyctl
drivers/phy/phy-sun4i-usb.c:199:24: warning: incorrect type in argument 1 (different address spaces)
drivers/phy/phy-sun4i-usb.c:199:24: expected void const volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:199:24: got void *phyctl
drivers/phy/phy-sun4i-usb.c:205:17: warning: incorrect type in argument 2 (different address spaces)
drivers/phy/phy-sun4i-usb.c:205:17: expected void volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:205:17: got void *phyctl
drivers/phy/phy-sun4i-usb.c:208:24: warning: incorrect type in argument 1 (different address spaces)
drivers/phy/phy-sun4i-usb.c:208:24: expected void const volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:208:24: got void *phyctl
drivers/phy/phy-sun4i-usb.c:210:17: warning: incorrect type in argument 2 (different address spaces)
drivers/phy/phy-sun4i-usb.c:210:17: expected void volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:210:17: got void *phyctl
drivers/phy/phy-sun4i-usb.c:212:24: warning: incorrect type in argument 1 (different address spaces)
drivers/phy/phy-sun4i-usb.c:212:24: expected void const volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:212:24: got void *phyctl
drivers/phy/phy-sun4i-usb.c:214:17: warning: incorrect type in argument 2 (different address spaces)
drivers/phy/phy-sun4i-usb.c:214:17: expected void volatile [noderef] <asn:2>*addr
drivers/phy/phy-sun4i-usb.c:214:17: got void *phyctl
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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The interrupt 0 is not a valid interrupt number. In the event where the
retrieval of the vbus-det gpio would return null, the gpiod_to_irq
callback would return 0, while the current code makes the assumption
that it is a valid interrupt, and would go on calling request_irq.
Obviously, this would fail, preventing the driver from probing properly,
while the vbus and id gpios are optional.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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In case of error, the function devm_kzalloc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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