- 08 Jun, 2017 38 commits
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Rob Herring authored
[ Upstream commit 8ee3fde0 ] Register a serdev controller with the serdev bus when a tty_port is registered. This creates the serdev controller and create's serdev devices for any DT child nodes of the tty_port's parent (i.e. the UART device). Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-By:
Sebastian Reichel <sre@kernel.org> Tested-By:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com>
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Peter Ujfalusi authored
[ Upstream commit 6df2b42f ] We have one register for each EP to set the maximum packet size for both TX and RX. If for example an RX programming would happen before the previous TX transfer finishes we would reset the TX packet side. To fix this issue, only modify the TX or RX part of the register. Fixes: 550a7375 ("USB: Add MUSB and TUSB support") Signed-off-by:
Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Bin Liu <b-liu@ti.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Thomas Petazzoni authored
[ Upstream commit 4b148d51 ] platform_get_irq() returns an error code, but the xhci-plat driver ignores it and always returns -ENODEV. This is not correct, and prevents -EPROBE_DEFER from being propagated properly. CC: <stable@vger.kernel.org> Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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Alan Stern authored
[ Upstream commit 63aea0db ] With threaded interrupts, bottom-half handlers are called with interrupts enabled. Therefore they can't safely use spin_lock(); they have to use spin_lock_irqsave(). Lockdep warns about a violation occurring in xhci_irq(): ========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.11.0-rc8-dbg+ #1 Not tainted --------------------------------------------------------- swapper/7/0 just changed the state of lock: (&(&ehci->lock)->rlock){-.-...}, at: [<ffffffffa0130a69>] ehci_hrtimer_func+0x29/0xc0 [ehci_hcd] but this lock took another, HARDIRQ-unsafe lock in the past: (hcd_urb_list_lock){+.....} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(hcd_urb_list_lock); local_irq_disable(); lock(&(&ehci->lock)->rlock); lock(hcd_urb_list_lock); <Interrupt> lock(&(&ehci->lock)->rlock); *** DEADLOCK *** no locks held by swapper/7/0. the shortest dependencies between 2nd lock and 1st lock: -> (hcd_urb_list_lock){+.....} ops: 252 { HARDIRQ-ON-W at: __lock_acquire+0x602/0x1280 lock_acquire+0xd5/0x1c0 _raw_spin_lock+0x2f/0x40 usb_hcd_unlink_urb_from_ep+0x1b/0x60 [usbcore] xhci_giveback_urb_in_irq.isra.45+0x70/0x1b0 [xhci_hcd] finish_td.constprop.60+0x1d8/0x2e0 [xhci_hcd] xhci_irq+0xdd6/0x1fa0 [xhci_hcd] usb_hcd_irq+0x26/0x40 [usbcore] irq_forced_thread_fn+0x2f/0x70 irq_thread+0x149/0x1d0 kthread+0x113/0x150 ret_from_fork+0x2e/0x40 This patch fixes the problem. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by:
Bart Van Assche <bart.vanassche@sandisk.com> CC: <stable@vger.kernel.org> Signed-off-by:
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Felipe Balbi authored
[ Upstream commit 76a35293 ] Instead of having several return points, let's use a local variable and a single place to return. This makes the code slightly easier to read. [set ret = IRQ_HANDLED in default working case -Mathias] Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Peter Chen authored
[ Upstream commit 7480d912 ] According to xHCI ch4.20 Scratchpad Buffers, the Scratchpad Buffer needs to be zeroed. ... The following operations take place to allocate Scratchpad Buffers to the xHC: ... b. Software clears the Scratchpad Buffer to '0' Cc: stable <stable@vger.kernel.org> Signed-off-by:
Peter Chen <peter.chen@nxp.com> Signed-off-by:
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Mathias Nyman authored
[ Upstream commit a0c16630 ] Intel Denverton microserver is Atom based and need the PME and CAS quirks as well. Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Thomas Gleixner authored
[ Upstream commit 30e7d894 ] Enabling the tracer selftest triggers occasionally the warning in text_poke(), which warns when the to be modified page is not marked reserved. The reason is that the tracer selftest installs kprobes on functions marked __init for testing. These probes are removed after the tests, but that removal schedules the delayed kprobes_optimizer work, which will do the actual text poke. If the work is executed after the init text is freed, then the warning triggers. The bug can be reproduced reliably when the work delay is increased. Flush the optimizer work and wait for the optimizing/unoptimizing lists to become empty before returning from the kprobes tracer selftest. That ensures that all operations which were queued due to the probes removal have completed. Link: http://lkml.kernel.org/r/20170516094802.76a468bb@gandalf.local.homeSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Cc: stable@vger.kernel.org Fixes: 6274de49 ("kprobes: Support delayed unoptimizing") Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
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Johan Hovold authored
[ Upstream commit 49e67dd1 ] The memory allocator passed to __unflatten_device_tree() (e.g. a wrapped kzalloc) can fail so add the missing sanity check to avoid dereferencing a NULL pointer. Fixes: fe140423 ("of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree") Cc: stable <stable@vger.kernel.org> # 2.6.38 Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Bjørn Mork authored
[ Upstream commit 8d7a10dd ] In their infinite wisdom, and never ending quest for end user frustration, Lenovo has decided to use new USB device IDs for the wwan modules in their 2017 laptops. The actual hardware is still the Sierra Wireless EM7455 or EM7430, depending on region. Cc: <stable@vger.kernel.org> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Johan Hovold authored
[ Upstream commit bec444cd ] Add missing sanity check on the non-SuperSpeed hub-descriptor length in order to avoid parsing and leaking two bytes of uninitialised slab data through sysfs removable-attributes (or a compound-device debug statement). Note that we only make sure that the DeviceRemovable field is always present (and specifically ignore the unused PortPwrCtrlMask field) in order to continue support any hubs with non-compliant descriptors. As a further safeguard, the descriptor buffer is also cleared. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> # 2.6.12 Signed-off-by:
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Johan Hovold authored
[ Upstream commit 2c25a2c8 ] A SuperSpeed hub descriptor does not have any variable-length fields so bail out when reading a short descriptor. This avoids parsing and leaking two bytes of uninitialised slab data through sysfs removable-attributes. Fixes: dbe79bbe ("USB 3.0 Hub Changes") Cc: stable <stable@vger.kernel.org> # 2.6.39 Cc: John Youn <John.Youn@synopsys.com> Acked-by:
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Johan Hovold authored
[ Upstream commit dd5ca753 ] Drop erroneous le16_to_cpu when returning the USB device speed which is already in host byte order. Found using sparse: warning: cast to restricted __le16 Fixes: 946b960d ("USB: add driver for iowarrior devices.") Cc: stable <stable@vger.kernel.org> # 2.6.21 Signed-off-by:
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Johan Hovold authored
[ Upstream commit 41318a2b ] Add missing endianness conversion when using the USB device-descriptor idProduct field to apply a hardware quirk. Fixes: 1ba47da5 ("uwb: add the i1480 DFU driver") Cc: stable <stable@vger.kernel.org> # 2.6.28 Signed-off-by:
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Vamsi Krishna Samavedam authored
[ Upstream commit 2f964780 ] Format specifier %p can leak kernel addresses while not valuing the kptr_restrict system settings. When kptr_restrict is set to (1), kernel pointers printed using the %pK format specifier will be replaced with Zeros. Debugging Note : &pK prints only Zeros as address. If you need actual address information, write 0 to kptr_restrict. echo 0 > /proc/sys/kernel/kptr_restrict [Found by poking around in a random vendor kernel tree, it would be nice if someone would actually send these types of patches upstream - gkh] Signed-off-by:
Vamsi Krishna Samavedam <vskrishn@codeaurora.org> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Alan Stern authored
[ Upstream commit 628c2893 ] The ene_usb6250 sub-driver in usb-storage does USB I/O to buffers on the stack, which doesn't work with vmapped stacks. This patch fixes the problem by allocating a separate 512-byte buffer at probe time and using it for all of the offending I/O operations. Signed-off-by:
Andreas Hartmann <andihartmann@01019freenet.de> CC: <stable@vger.kernel.org> Signed-off-by:
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Andrey Korolyov authored
[ Upstream commit 5f63424a ] This patch adds support for recognition of ARM-USB-TINY(H) devices which are almost identical to ARM-USB-OCD(H) but lacking separate barrel jack and serial console. By suggestion from Johan Hovold it is possible to replace ftdi_jtag_quirk with a bit more generic construction. Since all Olimex-ARM debuggers has exactly two ports, we could safely always use only second port within the debugger family. Signed-off-by:
Andrey Korolyov <andrey@xdel.ru> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Willy Tarreau authored
[ Upstream commit 3e21f4af ] The lp_setup() code doesn't apply any bounds checking when passing "lp=none", and only in this case, resulting in an overflow of the parport_nr[] array. All versions in Git history are affected. Reported-By:
Roee Hay <roee.hay@hcl.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org Signed-off-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Mikulas Patocka authored
[ Upstream commit 13840d38 ] Change the type of the parameter "retain_bytes" from unsigned to unsigned long, so that on 64-bit machines the user can set more than 4GiB of data to be retained. Also, change the type of the variable "count" in the function "__evict_old_buffers" to unsigned long. The assignment "count = c->n_buffers[LIST_CLEAN] + c->n_buffers[LIST_DIRTY];" could result in unsigned long to unsigned overflow and that could result in buffers not being freed when they should. While at it, avoid division in get_retain_buffers(). Division is slow, we can change it to shift because we have precalculated the log2 of block size. Cc: stable@vger.kernel.org Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Jiang Liu authored
[ Upstream commit 0d0b4c86 ] With the introduction of hierarchy irqdomain, struct irq_data becomes per-chip instead of per-irq and there may be multiple irq_datas associated with the same irq. Some per-irq data stored in struct irq_data now may get duplicated into multiple irq_datas, and causes inconsistent view. So introduce struct irq_common_data to host per-irq common data and to achieve consistent view among irq_chips. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: http://lkml.kernel.org/r/1433145945-789-4-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
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Du, Changbin authored
[ Upstream commit 4e9f3118 ] Debugfs init failure is not so important. We can continue our job on this failure. Also no break need for debugfs_create_file call failure. Signed-off-by:
Du, Changbin <changbin.du@intel.com> [felipe.balbi@linux.intel.com : - remove out-of-memory message, we get that from OOM. - switch dev_err() to dev_dbg() ] Signed-off-by:
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Suzuki K Poulose authored
[ Upstream commit 120f0779 ] Rearrange the code for fake pgd handling, which is applicable only for arm64. This will later be removed once we introduce the stage2 page table walker macros. Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Reviewed-by:
Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by:
Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by:
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Firo Yang authored
[ Upstream commit a5f56ba3 ] No need to cast the void pointer returned by kmalloc() in arch/arm/kvm/mmu.c::kvm_alloc_stage2_pgd(). Signed-off-by:
Firo Yang <firogm@gmail.com> Acked-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Hiroyuki Yokoyama authored
[ Upstream commit 9a445bbb ] This patch fixes the register definition of AE (Address Error flag) bit. Fixes: 0c1c8ff3 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver") Cc: <stable@vger.kernel.org> # v4.1+ Signed-off-by:
Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> [Shimoda: add Fixes and Cc tags in the commit log] Signed-off-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
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Joe Thornber authored
[ Upstream commit 0377a07c ] When decrementing the reference count for a block, the free count wasn't being updated if the reference count went to zero. Cc: stable@vger.kernel.org Signed-off-by:
Joe Thornber <ejt@redhat.com> Signed-off-by:
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Joe Thornber authored
[ Upstream commit 91bcdb92 ] These calls were the wrong way round in __write_initial_superblock. Cc: stable@vger.kernel.org Signed-off-by:
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Johan Hovold authored
[ Upstream commit 6aeb75e6 ] Fix a division-by-zero in set_termios when debugging is enabled and a high-enough speed has been requested so that the divisor value becomes zero. Instead of just fixing the offending debug statement, cap the baud rate at the base as a zero divisor value also appears to crash the firmware. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> # 2.6.12 Reviewed-by:
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Johan Hovold authored
[ Upstream commit 26cede34 ] Drop erroneous cpu_to_le32 when setting the baud rate, something which corrupted the divisor on big-endian hosts. Found using sparse: warning: incorrect type in argument 1 (different base types) expected unsigned int [unsigned] [usertype] val got restricted __le32 [usertype] <noident> Fixes: af2ac1a0 ("USB: serial mct_usb232: move DMA buffers to heap") Cc: stable <stable@vger.kernel.org> # 2.6.34 Reviewed-by:
Pete Zaitcev <zaitcev@yahoo.com> Signed-off-by:
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Anthony Mallet authored
[ Upstream commit bb246681 ] Commit 557aaa7f ("ft232: support the ASYNC_LOW_LATENCY flag") enables unprivileged users to set the FTDI latency timer, but there was a logic flaw that skipped sending the corresponding USB control message to the device. Specifically, the device latency timer would not be updated until next open, something which was later also inadvertently broken by commit c19db4c9 ("USB: ftdi_sio: set device latency timeout at port probe"). A recent commit c6dce262 ("USB: serial: ftdi_sio: fix extreme low-latency setting") disabled the low-latency mode by default so we now need this fix to allow unprivileged users to again enable it. Signed-off-by:
Anthony Mallet <anthony.mallet@laas.fr> [johan: amend commit message] Fixes: 557aaa7f ("ft232: support the ASYNC_LOW_LATENCY flag") Fixes: c19db4c9 ("USB: ftdi_sio: set device latency timeout at port probe"). Cc: stable <stable@vger.kernel.org> # 2.6.31 Signed-off-by:
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Daniele Palmas authored
[ Upstream commit 40dd4604 ] This patch adds support for Telit ME910 PID 0x1100. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Leonard Crestez authored
[ Upstream commit d8581c7c ] The board file for imx6sx-sdb overrides cpufreq operating points to use higher voltages. This is done because the board has a shared rail for VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage needs to be a value suitable for both ARM and SOC. This only applies to LDO bypass mode, a feature not present in upstream. When LDOs are enabled the effect is to use higher voltages than necessary for no good reason. Setting these higher voltages can make some boards fail to boot with ugly semi-random crashes reminiscent of memory corruption. These failures only happen on board rev. C, rev. B is reported to still work. Signed-off-by:
Leonard Crestez <leonard.crestez@nxp.com> Fixes: 54183bd7 ("ARM: imx6sx-sdb: add revb board and make it default") Cc: stable@vger.kernel.org Signed-off-by:
Shawn Guo <shawnguo@kernel.org> Signed-off-by:
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Fabio Estevam authored
[ Upstream commit 1dd58e12 ] imx6sx-sdb has custom operating points entries because it has one power supply that drives both VDDARM_IN and VDDSOC_IN. As per the MX6UL datasheet we have the following minimum voltages for 198 MHz operation (after adding the 25mV margin value): VDDARM_IN = 0.975 V VDDSOC_IN = 1.175 V So use 1.175V for the 198MHz operation. Signed-off-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
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Aleksa Sarai authored
[ Upstream commit cb4a3167 ] Add a new macro for_each_subsys_which that allows all enabled cgroup subsystems to be filtered by a bitmask, such that mask & (1 << ssid) determines if the subsystem is to be processed in the loop body (where ssid is the unique id of the subsystem). Also replace the need_forkexit_callback with two separate bitmasks for each callback to make (ss->{fork,exit}) checks unnecessary. tj: add a short comment for "if (!CGROUP_SUBSYS_COUNT)". Signed-off-by:
Aleksa Sarai <cyphar@cyphar.com> Signed-off-by:
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Tejun Heo authored
[ Upstream commit 7d7efec3 ] threadgroup_change_begin/end() are used to mark the beginning and end of threadgroup modifying operations to allow code paths which require a threadgroup to stay stable across blocking operations to synchronize against those sections using threadgroup_lock/unlock(). It's currently implemented as a general mechanism in sched.h using per-signal_struct rwsem; however, this never grew non-cgroup use cases and becomes noop if !CONFIG_CGROUPS. It turns out that cgroups is gonna be better served with a different sycnrhonization scheme and is a bit silly to keep cgroups specific details as a general mechanism. What's general here is identifying the places where threadgroups are modified. This patch restructures threadgroup locking so that threadgroup_change_begin/end() become a place where subsystems which need to sycnhronize against threadgroup changes can hook into. cgroup_threadgroup_change_begin/end() which operate on the per-signal_struct rwsem are created and threadgroup_lock/unlock() are moved to cgroup.c and made static. This is pure reorganization which doesn't cause any functional changes. Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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Eric W. Biederman authored
[ Upstream commit b9a985db ] The code can potentially sleep for an indefinite amount of time in zap_pid_ns_processes triggering the hung task timeout, and increasing the system average. This is undesirable. Sleep with a task state of TASK_INTERRUPTIBLE instead of TASK_UNINTERRUPTIBLE to remove these undesirable side effects. Apparently under heavy load this has been allowing Chrome to trigger the hung time task timeout error and cause ChromeOS to reboot. Reported-by:
Vovo Yang <vovoy@google.com> Reported-by:
Guenter Roeck <linux@roeck-us.net> Tested-by:
"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Johan Hovold authored
[ Upstream commit 75cf0679 ] Add missing endianness conversion when using the USB device-descriptor bcdDevice field to construct a firmware file name. Fixes: 8ef80aef ("[IRDA]: irda-usb.c: STIR421x cleanups") Cc: stable <stable@vger.kernel.org> # 2.6.18 Cc: Nick Fedchik <nfedchik@atlantic-link.com.ua> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Martin Schwidefsky authored
[ Upstream commit 07a63cbe ] git commit c5328901 "[S390] entry[64].S improvements" removed the update of the exit_timer lowcore field from the critical section cleanup of the .Lsysc_restore/.Lsysc_done and .Lio_restore/.Lio_done blocks. If the PSW is updated by the critical section cleanup to point to user space again, the interrupt entry code will do a vtime calculation after the cleanup completed with an exit_timer value which has *not* been updated. Due to this incorrect system time deltas are calculated. If an interrupt occured with an old PSW between .Lsysc_restore/.Lsysc_done or .Lio_restore/.Lio_done update __LC_EXIT_TIMER with the system entry time of the interrupt. Cc: stable@vger.kernel.org # 3.3+ Tested-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Andrey Konovalov authored
[ Upstream commit 5edabca9 ] In the current DCCP implementation an skb for a DCCP_PKT_REQUEST packet is forcibly freed via __kfree_skb in dccp_rcv_state_process if dccp_v6_conn_request successfully returns. However, if IPV6_RECVPKTINFO is set on a socket, the address of the skb is saved to ireq->pktopts and the ref count for skb is incremented in dccp_v6_conn_request, so skb is still in use. Nevertheless, it gets freed in dccp_rcv_state_process. Fix by calling consume_skb instead of doing goto discard and therefore calling __kfree_skb. Similar fixes for TCP: fb7e2399 [TCP]: skb is unexpectedly freed. 0aea76d3 tcp: SYN packets are now simply consumed Signed-off-by:
Andrey Konovalov <andreyknvl@google.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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- 28 May, 2017 2 commits
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Sasha Levin authored
Signed-off-by: -
Eric Dumazet authored
[ Upstream commit 197c949e ] Backport of this upstream commit into stable kernels : 89c22d8c ("net: Fix skb csum races when peeking") exposed a bug in udp stack vs MSG_PEEK support, when user provides a buffer smaller than skb payload. In this case, skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov); returns -EFAULT. This bug does not happen in upstream kernels since Al Viro did a great job to replace this into : skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr), msg); This variant is safe vs short buffers. For the time being, instead reverting Herbert Xu patch and add back skb->ip_summed invalid changes, simply store the result of udp_lib_checksum_complete() so that we avoid computing the checksum a second time, and avoid the problematic skb_copy_and_csum_datagram_iovec() call. This patch can be applied on recent kernels as it avoids a double checksumming, then backported to stable kernels as a bug fix. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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