- 01 Oct, 2015 10 commits
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Marc Zyngier authored
commit c4cbba9f upstream. When running a guest with the architected timer disabled (with QEMU and the kernel_irqchip=off option, for example), it is important to make sure the timer gets turned off. Otherwise, the guest may try to enable it anyway, leading to a screaming HW interrupt. The fix is to unconditionally turn off the virtual timer on guest exit. Reviewed-by:
Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Will Deacon authored
commit df057cc7 upstream. Cortex-A53 processors <= r0p4 are affected by erratum #843419 which can lead to a memory access using an incorrect address in certain sequences headed by an ADRP instruction. There is a linker fix to generate veneers for ADRP instructions, but this doesn't work for kernel modules which are built as unlinked ELF objects. This patch adds a new config option for the erratum which, when enabled, builds kernel modules with the mcmodel=large flag. This uses absolute addressing for all kernel symbols, thereby removing the use of ADRP as a PC-relative form of addressing. The ADRP relocs are removed from the module loader so that we fail to load any potentially affected modules. Acked-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Will Deacon authored
commit d10bcd47 upstream. When entering the kernel at EL2, we fail to initialise the MDCR_EL2 register which controls debug access and PMU capabilities at EL1. This patch ensures that the register is initialised so that all traps are disabled and all the PMU counters are available to the host. When a guest is scheduled, KVM takes care to configure trapping appropriately. Acked-by:
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Will Deacon authored
commit bdec97a8 upstream. When saving/restoring the VFP registers from a compat (AArch32) signal frame, we rely on the compat registers forming a prefix of the native register file and therefore make use of copy_{to,from}_user to transfer between the native fpsimd_state and the compat_vfp_sigframe. Unfortunately, this doesn't work so well in a big-endian environment. Our fpsimd save/restore code operates directly on 128-bit quantities (Q registers) whereas the compat_vfp_sigframe represents the registers as an array of 64-bit (D) registers. The architecture packs the compat D registers into the Q registers, with the least significant bytes holding the lower register. Consequently, we need to swap the 64-bit halves when converting between these two representations on a big-endian machine. This patch replaces the __copy_{to,from}_user invocations in our compat VFP signal handling code with explicit __put_user loops that operate on 64-bit values and swap them accordingly. Reviewed-by:
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Jeff Vander Stoep authored
commit bf0c4e04 upstream. Move the poison pointer offset to 0xdead000000000000, a recognized value that is not mappable by user-space exploits. Acked-by:
Thierry Strudel <tstrudel@google.com> Signed-off-by:
Jeff Vander Stoep <jeffv@google.com> Signed-off-by:
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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:
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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 30 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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