- 01 Oct, 2015 5 commits
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Bob Copeland authored
commit 3633ebeb upstream. We already set a station to be associated when peering completes, both in user space and in the kernel. Thus we should always have an associated sta before sending data frames to that station. Failure to check assoc state can cause crashes in the lower-level driver due to transmitting unicast data frames before driver sta structures (e.g. ampdu state in ath9k) are initialized. This occurred when forwarding in the presence of fixed mesh paths: frames were transmitted to stations with whom we hadn't yet completed peering. Reported-by:
Alexis Green <agreen@cococorp.com> Tested-by:
Jesse Jones <jjones@cococorp.com> Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jean Delvare authored
commit d3d11fe0 upstream. The temperature registers appear to report values in degrees Celsius while the hwmon API mandates values to be exposed in millidegrees Celsius. Do the conversion so that the values reported by "sensors" are correct. Fixes: aed93e0b ("tg3: Add hwmon support for temperature") Signed-off-by:
Jean Delvare <jdelvare@suse.de> Cc: Prashant Sreedharan <prashant@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Adrien Schildknecht authored
commit 1642d09f upstream. The v2 of NetGear WNA1000M uses a different idProduct: USB ID 0846:9043 Signed-off-by:
Adrien Schildknecht <adrien+dev@schischi.me> Acked-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
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Eric W. Biederman authored
commit 12c641ab upstream. In the logic in the initial commit of unshare made creating a new thread group for a process, contingent upon creating a new memory address space for that process. That is wrong. Two separate processes in different thread groups can share a memory address space and clone allows creation of such proceses. This is significant because it was observed that mm_users > 1 does not mean that a process is multi-threaded, as reading /proc/PID/maps temporarily increments mm_users, which allows other processes to (accidentally) interfere with unshare() calls. Correct the check in check_unshare_flags() to test for !thread_group_empty() for CLONE_THREAD, CLONE_SIGHAND, and CLONE_VM. For sighand->count > 1 for CLONE_SIGHAND and CLONE_VM. For !current_is_single_threaded instead of mm_users > 1 for CLONE_VM. By using the correct checks in unshare this removes the possibility of an accidental denial of service attack. Additionally using the correct checks in unshare ensures that only an explicit unshare(CLONE_VM) can possibly trigger the slow path of current_is_single_threaded(). As an explict unshare(CLONE_VM) is pointless it is not expected there are many applications that make that call. Fixes: b2e0d987 userns: Implement unshare of the user namespace Reported-by:
Ricky Zhou <rickyz@chromium.org> Reported-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Ming Lei authored
commit 596f5aad upstream. There may be lots of pending requests so that the buffer of PAGE_SIZE can't hold them at all. One typical example is scsi-mq, the queue depth(.can_queue) of scsi_host and blk-mq is quite big but scsi_device's queue_depth is a bit small(.cmd_per_lun), then it is quite easy to have lots of pending requests in hw queue. This patch fixes the following warning and the related memory destruction. [ 359.025101] fill_read_buffer: blk_mq_hw_sysfs_show+0x0/0x7d returned bad count^M [ 359.055595] irq event stamp: 15537^M [ 359.055606] general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC ^M [ 359.055614] Dumping ftrace buffer:^M [ 359.055660] (ftrace buffer empty)^M [ 359.055672] Modules linked in: nbd ipv6 kvm_intel kvm serio_raw^M [ 359.055678] CPU: 4 PID: 21631 Comm: stress-ng-sysfs Not tainted 4.2.0-rc5-next-20150805 #434^M [ 359.055679] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011^M [ 359.055682] task: ffff8802161cc000 ti: ffff88021b4a8000 task.ti: ffff88021b4a8000^M [ 359.055693] RIP: 0010:[<ffffffff811541c5>] [<ffffffff811541c5>] __kmalloc+0xe8/0x152^M Signed-off-by:
Ming Lei <ming.lei@canonical.com> Signed-off-by:
Jens Axboe <axboe@fb.com> Signed-off-by:
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- 21 Sep, 2015 31 commits
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Greg Kroah-Hartman authored
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Imre Deak authored
commit 9e326f78 upstream. We can call this function for a dummy console that doesn't support setting the font mapping, which will result in a null ptr BUG. So check for this case and return error for consoles w/o font mapping support. Reference: https://bugzilla.kernel.org/show_bug.cgi?id=59321Signed-off-by:
Imre Deak <imre.deak@intel.com> Signed-off-by:
Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by:
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Mikulas Patocka authored
commit f49a26e7 upstream. Update ctime and mtime when a directory is modified. (though OS/2 doesn't update them anyway) Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Grant Likely authored
commit 7f5dcaf1 upstream. The unregister path of platform_device is broken. On registration, it will register all resources with either a parent already set, or type==IORESOURCE_{IO,MEM}. However, on unregister it will release everything with type==IORESOURCE_{IO,MEM}, but ignore the others. There are also cases where resources don't get registered in the first place, like with devices created by of_platform_populate()*. Fix the unregister path to be symmetrical with the register path by checking the parent pointer instead of the type field to decide which resources to unregister. This is safe because the upshot of the registration path algorithm is that registered resources have a parent pointer, and non-registered resources do not. * It can be argued that of_platform_populate() should be registering it's resources, and they argument has some merit. However, there are quite a few platforms that end up broken if we try to do that due to overlapping resources in the device tree. Until that is fixed, we need to solve the immediate problem. Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: Rob Herring <robh@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
Grant Likely <grant.likely@linaro.org> Tested-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Tested-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Vignesh R authored
commit b9e23f32 upstream. Legacy IPs like PWMSS, present under l4per2_7xx_clkdm, cannot support smart-idle when its clock domain is in HW_AUTO on DRA7 SoCs. Hence, program clock domain to SW_WKUP. Signed-off-by:
Vignesh R <vigneshr@ti.com> Acked-by:
Tero Kristo <t-kristo@ti.com> Reviewed-by:
Paul Walmsley <paul@pwsan.com> Signed-off-by:
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David Daney authored
commit 3a496b00 upstream. If the internal call to of_address_to_resource() fails, we end up looping forever in of_find_matching_node_by_address(). This can be caused by a defective device tree, or calling with an incorrect matches argument. Fix by calling of_find_matching_node() unconditionally at the end of the loop. Signed-off-by:
David Daney <david.daney@cavium.com> Signed-off-by:
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Sudip Mukherjee authored
commit bab383de upstream. parport_find_base() will implicitly do parport_get_port() which increases the refcount. Then parport_register_device() will again increment the refcount. But while unloading the module we are only doing parport_unregister_device() decrementing the refcount only once. We add an parport_put_port() to neutralize the effect of parport_get_port(). Signed-off-by:
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Peter Chen authored
commit 4bc58eb1 upstream. Fix the name of attribute Signed-off-by:
Peter Chen <peter.chen@freescale.com> Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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Peter Chen authored
commit 8cd50626 upstream. Fix the name of attribute Signed-off-by:
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Masahiro Yamada authored
commit 64526370 upstream. Currently, devres_get() passes devres_free() the pointer to devres, but devres_free() should be given with the pointer to resource data. Fixes: 9ac7849e ("devres: device resource management") Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Max Filippov authored
commit 77d6273e upstream. call12 can't be safely used as the first call in the inline function, because the compiler does not extend the stack frame of the bounding function accordingly, which may result in corruption of local variables. If a call needs to be done, do call8 first followed by call12. For pure assembly code in _switch_to increase stack frame size of the bounding function. Signed-off-by:
Max Filippov <jcmvbkbc@gmail.com> Signed-off-by:
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Max Filippov authored
commit 4229fb12 upstream. Userspace return code may skip restoring THREADPTR register if there are no registers that need to be zeroed. This leads to spurious failures in libc NPTL tests. Always restore THREADPTR on return to userspace. Signed-off-by:
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Xiao Guangrong authored
commit 6f691251 upstream. We got the bug that qemu complained with "KVM: unknown exit, hardware reason 31" and KVM shown these info: [84245.284948] EPT: Misconfiguration. [84245.285056] EPT: GPA: 0xfeda848 [84245.285154] ept_misconfig_inspect_spte: spte 0x5eaef50107 level 4 [84245.285344] ept_misconfig_inspect_spte: spte 0x5f5fadc107 level 3 [84245.285532] ept_misconfig_inspect_spte: spte 0x5141d18107 level 2 [84245.285723] ept_misconfig_inspect_spte: spte 0x52e40dad77 level 1 This is because we got a mmio #PF and the handler see the mmio spte becomes normal (points to the ram page) However, this is valid after introducing fast mmio spte invalidation which increases the generation-number instead of zapping mmio sptes, a example is as follows: 1. QEMU drops mmio region by adding a new memslot 2. invalidate all mmio sptes 3. VCPU 0 VCPU 1 access the invalid mmio spte access the region originally was MMIO before set the spte to the normal ram map mmio #PF check the spte and see it becomes normal ram mapping !!! This patch fixes the bug just by dropping the check in mmio handler, it's good for backport. Full check will be introduced in later patches Reported-by:
Pavel Shirshov <ru.pchel@gmail.com> Tested-by:
Xiao Guangrong <guangrong.xiao@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Don Zickus authored
commit 3af4e5a9 upstream. It was reported that after 10-20 reboots, a usb keyboard plugged into a docking station would not work unless it was replugged in. Using usbmon, it turns out the interrupt URBs were streaming with callback errors of -71 for some reason. The hid-core.c::hid_io_error was supposed to retry and then reset, but the reset wasn't really happening. The check for HID_NO_BANDWIDTH was inverted. Fix was simple. Tested by reporter and locally by me by unplugging a keyboard halfway until I could recreate a stream of errors but no disconnect. Signed-off-by:
Don Zickus <dzickus@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Andrey Ryabinin authored
commit 71c6da84 upstream. Currently context size (cra_ctxsize) doesn't specified for ghash_async_alg. Which means it's zero. Thus crypto_create_tfm() doesn't allocate needed space for ghash_async_ctx, so any read/write to ctx (e.g. in ghash_async_init_tfm()) is not valid. Signed-off-by:
Andrey Ryabinin <aryabinin@odin.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Maciej S. Szmigiero authored
commit ffa34de0 upstream. SMSC IrCC SIR/FIR port should not be bound to by (legacy) serial driver so its own driver (smsc-ircc2) can bind to it. Signed-off-by:
Maciej Szmigiero <mail@maciej.szmigiero.name> Signed-off-by:
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Peter Chen authored
commit 0521cfd0 upstream. The ehci platform device's drvdata is the pointer of struct usb_hcd already, so we doesn't need to call bus_to_hcd conversion again. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Kishon Vijay Abraham I authored
commit b2fb5b1a upstream. DWC3 uses bounce buffer to handle non max packet aligned OUT transfers and the size of bounce buffer is 512 bytes. However if the host initiates OUT transfers of size more than 512 bytes (and non max packet aligned), the driver throws a WARN dump but still programs the TRB to receive more than 512 bytes. This will cause bounce buffer to overflow and corrupt the adjacent memory locations which can be fatal. Fix it by programming the TRB to receive a maximum of DWC3_EP0_BOUNCE_SIZE (512) bytes. Signed-off-by:
Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by:
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Matthijs Kooijman authored
commit 1fb8dc36 upstream. CustomWare uses the FTDI VID with custom PIDs for their ShipModul MiniPlex products. Signed-off-by:
Matthijs Kooijman <matthijs@stdin.nl> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Philipp Hachtmann authored
commit 951d3793 upstream. The driver used usb_get_serial_data(port->serial) which compiled but resulted in a NULL pointer being returned (and subsequently used). I did not go deeper into this but I guess this is a regression. Signed-off-by:
Philipp Hachtmann <hachti@hachti.de> Fixes: a85796ee ("USB: symbolserial: move private-data allocation to port_probe") Acked-by:
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Bjorn Helgaas authored
commit d1541dc9 upstream. In fixup_ti816x_class(), we assigned "class = PCI_CLASS_MULTIMEDIA_VIDEO". But PCI_CLASS_MULTIMEDIA_VIDEO is only the two-byte base class/sub-class and needs to be shifted to make space for the low-order interface byte. Shift PCI_CLASS_MULTIMEDIA_VIDEO to set the correct class code. Fixes: 63c44080 ("PCI: Add quirk for setting valid class for TI816X Endpoint") Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> CC: Hemant Pedanekar <hemantp@ti.com> Signed-off-by:
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Dan Carpenter authored
commit 3294bee8 upstream. The ">" should be ">=" or we end up reading beyond the end of the array. Fixes: 6e973d2c ('clk: vexpress: Add separate SP810 driver') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Pawel Moll <pawel.moll@arm.com> Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> Signed-off-by:
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Ian Abbott authored
commit ad83dbd9 upstream. The "adl_pci7x3x" driver replaced the "adl_pci7230" and "adl_pci7432" drivers in commits 8f567c37 ("staging: comedi: new adl_pci7x3x driver") and 657f77d1 ("staging: comedi: remove adl_pci7230 and adl_pci7432 drivers"). Although the new driver code agrees with the user manuals for the respective boards, digital outputs stopped working on the PCI-7230. This has 16 digital output channels and the previous adl_pci7230 driver shifted the 16 bit output state left by 16 bits before writing to the hardware register. The new adl_pci7x3x driver doesn't do that. Fix it in `adl_pci7x3x_do_insn_bits()` by checking for the special case of the subdevice having only 16 channels and duplicating the 16 bit output state into both halves of the 32-bit register. That should work both for what the board actually does and for what the user manual says it should do. Fixes: 8f567c37 ("staging: comedi: new adl_pci7x3x driver") Signed-off-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
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Lars-Peter Clausen authored
commit 7abad106 upstream. The different devices support by the adis16480 driver have slightly different scales for the gyroscope and accelerometer channels. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Lars-Peter Clausen authored
commit c689a923 upstream. Add inverse unit conversion macro to convert from standard IIO units to units that might be used by some devices. Those are useful in combination with scale factors that are specified as IIO_VAL_FRACTIONAL. Typically the denominator for those specifications will contain the maximum raw value the sensor will generate and the numerator the value it maps to in a specific unit. Sometimes datasheets specify those in different units than the standard IIO units (e.g. degree/s instead of rad/s) and so we need to do a unit conversion. From a mathematical point of view it does not make a difference whether we apply the unit conversion to the numerator or the inverse unit conversion to the denominator since (x / y) / z = x / (y * z). But as the denominator is typically a larger value and we are rounding both the numerator and denominator to integer values using the later method gives us a better precision (E.g. the relative error is smaller if we round 8000.3 to 8000 rather than rounding 8.3 to 8). This is where in inverse unit conversion macros will be used. Marked for stable as used by some upcoming fixes. Signed-off-by:
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Cristina Opriceana authored
commit 1bdc0293 upstream. Change return value to 0 if no device is bound since unsigned int cannot support negative error codes. Fixes: f18e7a06 ("iio: Return -ENODEV for file operations if the device has been unregistered") Signed-off-by:
Cristina Opriceana <cristina.opriceana@gmail.com> Signed-off-by:
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Cristina Opriceana authored
commit 41d903c0 upstream. Negative return values are not supported by iio_event_poll since its return type is unsigned int. Fixes: f18e7a06 ("iio: Return -ENODEV for file operations if the device has been unregistered") Signed-off-by:
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Markus Pargmann authored
commit 06d2f6ca upstream. This patch adds selects for IIO_BUFFER and IIO_TRIGGERED_BUFFER. Without IIO_BUFFER, the driver does not compile. Signed-off-by:
Markus Pargmann <mpa@pengutronix.de> Reviewed-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by:
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Sebastian Ott authored
commit a313bdc5 upstream. Fix this error when compiling with CONFIG_SMP=n and CONFIG_DYNAMIC_DEBUG=y: drivers/s390/char/sclp_early.c: In function 'sclp_read_info_early': drivers/s390/char/sclp_early.c:87:19: error: 'EBUSY' undeclared (first use in this function) } while (rc == -EBUSY); ^ Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Jonathon Jongsma authored
commit bd3e1c7c upstream. Due to some recent changes in drm_helper_probe_single_connector_modes_merge_bits(), old custom modes were not being pruned properly. In current kernels, drm_mode_validate_basic() is called to sanity-check each mode in the list. If the sanity-check passes, the mode's status gets set to to MODE_OK. In older kernels this check was not done, so old custom modes would still have a status of MODE_UNVERIFIED at this point, and would therefore be pruned later in the function. As a result of this new behavior, the list of modes for a device always includes every custom mode ever configured for the device, with the largest one listed first. Since desktop environments usually choose the first preferred mode when a hotplug event is emitted, this had the result of making it very difficult for the user to reduce the size of the display. The qxl driver did implement the mode_valid connector function, but it was empty. In order to restore the old behavior where old custom modes are pruned, we implement a proper mode_valid function for the qxl driver. This function now checks each mode against the last configured custom mode and the list of standard modes. If the mode doesn't match any of these, its status is set to MODE_BAD so that it will be pruned as expected. Signed-off-by:
Jonathon Jongsma <jjongsma@redhat.com> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Stephen Chandler Paul authored
commit 924f92bf upstream. Most of the time this isn't an issue since hotplugging an adaptor will trigger a crtc mode change which in turn, causes the driver to probe every DisplayPort for a dpcd. However, in cases where hotplugging doesn't cause a mode change (specifically when one unplugs a monitor from a DisplayPort connector, then plugs that same monitor back in seconds later on the same port without any other monitors connected), we never probe for the dpcd before starting the initial link training. What happens from there looks like this: - GPU has only one monitor connected. It's connected via DisplayPort, and does not go through an adaptor of any sort. - User unplugs DisplayPort connector from GPU. - Change in HPD is detected by the driver, we probe every DisplayPort for a possible connection. - Probe the port the user originally had the monitor connected on for it's dpcd. This fails, and we clear the first (and only the first) byte of the dpcd to indicate we no longer have a dpcd for this port. - User plugs the previously disconnected monitor back into the same DisplayPort. - radeon_connector_hotplug() is called before everyone else, and tries to handle the link training. Since only the first byte of the dpcd is zeroed, the driver is able to complete link training but does so against the wrong dpcd, causing it to initialize the link with the wrong settings. - Display stays blank (usually), dpcd is probed after the initial link training, and the driver prints no obvious messages to the log. In theory, since only one byte of the dpcd is chopped off (specifically, the byte that contains the revision information for DisplayPort), it's not entirely impossible that this bug may not show on certain monitors. For instance, the only reason this bug was visible on my ASUS PB238 monitor was due to the fact that this monitor using the enhanced framing symbol sequence, the flag for which is ignored if the radeon driver thinks that the DisplayPort version is below 1.1. Signed-off-by:
Stephen Chandler Paul <cpaul@redhat.com> Reviewed-by:
Jerome Glisse <jglisse@redhat.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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- 13 Sep, 2015 4 commits
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Greg Kroah-Hartman authored
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Marc Zyngier authored
commit 126c69a0 upstream. When injecting a fault into a misbehaving 32bit guest, it seems rather idiotic to also inject a 64bit fault that is only going to corrupt the guest state. This leads to a situation where we perform an illegal exception return at EL2 causing the host to crash instead of killing the guest. Just fix the stupid bug that has been there from day 1. Reported-by:
Russell King <rmk+kernel@arm.linux.org.uk> Tested-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Alan Stern authored
commit 49718f0f upstream. The routines in scsi_rpm.c assume that if a runtime-PM callback is invoked for a SCSI device, it can only mean that the device's driver has asked the block layer to handle the runtime power management (by calling blk_pm_runtime_init(), which among other things sets q->dev). However, this assumption turns out to be wrong for things like the ses driver. Normally ses devices are not allowed to do runtime PM, but userspace can override this setting. If this happens, the kernel gets a NULL pointer dereference when blk_post_runtime_resume() tries to use the uninitialized q->dev pointer. This patch fixes the problem by calling the block layer's runtime-PM routines only if the device's driver really does have a runtime-PM callback routine. Since ses doesn't define any such callbacks, the crash won't occur. This fixes Bugzilla #101371. Signed-off-by:
Stanisław Pitucha <viraptor@gmail.com> Reported-by:
Ilan Cohen <ilanco@gmail.com> Tested-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
James Bottomley <JBottomley@Odin.com> Signed-off-by:
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Yann Droneaud authored
commit d6c763af upstream. Since commit 8a0a9bd4 ('random: make get_random_int() more random'), get_random_int() returns a random value for each call, so comment and hack introduced in mmap_rnd() as part of commit 1d18c47c ('arm64: MMU fault handling and page table management') are incorrects. Commit 1d18c47c seems to use the same hack introduced by commit a5adc91a ('powerpc: Ensure random space between stack and mmaps'), latter copied in commit 5a0efea0 ('sparc64: Sharpen address space randomization calculations.'). But both architectures were cleaned up as part of commit fa8cbaaf ('powerpc+sparc64/mm: Remove hack in mmap randomize layout') as hack is no more needed since commit 8a0a9bd4. So the present patch removes the comment and the hack around get_random_int() on AArch64's mmap_rnd(). Cc: David S. Miller <davem@davemloft.net> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:
Dan McGee <dpmcgee@gmail.com> Signed-off-by:
Yann Droneaud <ydroneaud@opteya.com> Signed-off-by:
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