- 07 Sep, 2016 40 commits
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Felix Fietkau authored
commit 6b07d9ca upstream. The code currently assumes that buffered multicast PS frames don't have a pending ACK frame for tx status reporting. However, hostapd sends a broadcast deauth frame on teardown for which tx status is requested. This can lead to the "Have pending ack frames" warning on module reload. Fix this by using ieee80211_free_txskb/ieee80211_purge_tx_queue. Signed-off-by:
Felix Fietkau <nbd@nbd.name> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Stefan Haberland authored
commit 9ba333dc upstream. When a device is in a status where CIO has killed all I/O by itself the interrupt for a clear request may not contain an irb to determine the clear function. Instead it contains an error pointer -EIO. This was ignored by the DASD int_handler leading to a hanging device waiting for a clear interrupt. Handle -EIO error pointer correctly for requests that are clear pending and treat the clear as successful. Signed-off-by:
Stefan Haberland <sth@linux.vnet.ibm.com> Reviewed-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Lukasz Odzioba authored
commit c5b48fa7 upstream. On Intel Xeon Phi Knights Landing processor family the channels of the memory controller have untypical arrangement - MC0 is mapped to CH3,4,5 and MC1 is mapped to CH0,1,2. This causes the EDAC driver to report the channel name incorrectly. We missed this change earlier, so the code already contains similar comment, but the translation function is incorrect. Without this patch: errors in DIMM_A and DIMM_D were reported in DIMM_D errors in DIMM_B and DIMM_E were reported in DIMM_E errors in DIMM_C and DIMM_F were reported in DIMM_F Correct this. Hubert Chrzaniuk: - rebased to 4.8 - comments and code cleanup Fixes: d0cdf900 ("sb_edac: Add Knights Landing (Xeon Phi gen 2) support") Reviewed-by:
Tony Luck <tony.luck@intel.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: lukasz.anaczkowski@intel.com Cc: lukasz.odzioba@intel.com Cc: mchehab@kernel.org Link: http://lkml.kernel.org/r/1469231089-22837-1-git-send-email-lukasz.odzioba@intel.comSigned-off-by:
Lukasz Odzioba <lukasz.odzioba@intel.com> [ Boris: Simplify a bit by removing char mc. ] Signed-off-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
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Wolfram Sang authored
commit ce8cb803 upstream. We also need to revert the dynamic OF change, so we get a consistent state again. Otherwise, we might have two devices enabled e.g. after pinctrl setup fails. Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Agrawal, Nitesh-kumar authored
commit 8cf43455 upstream. In the function amd_gpio_irq_enable() and amd_gpio_direction_input(), remove the code which is setting the default de-bounce time to 2.75ms. The driver code shall use the same settings as specified in BIOS. Any default assignment impacts TouchPad behaviour when the LevelTrig is set to EDGE FALLING. Reviewed-by:
Ken Xue <Ken.Xue@amd.com> Signed-off-by:
Nitesh Kumar Agrawal <Nitesh-kumar.Agrawal@amd.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Wei Yongjun authored
commit 5b236d0f upstream. It's not necessary to unregister pin controller device registered with devm_pinctrl_register() and using pinctrl_unregister() leads to a double free. This is detected by Coccinelle semantic patch. Fixes: e649f7ec ("pinctrl: meson: Use devm_pinctrl_register() for pinctrl registration") Signed-off-by:
Wei Yongjun <weiyj.lk@gmail.com> Reviewed-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by:
Kevin Hilman <khilman@baylibre.com> Signed-off-by:
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Will Deacon authored
commit 5bc0a116 upstream. The disable_bypass cmdline option changes the SMMUv3 driver to put down faulting stream table entries by default, as opposed to bypassing transactions from unconfigured devices. In this mode of operation, it is entirely expected to see aborting entries in the stream table if and when we come to installing a valid translation, so don't trigger a BUG() as a result of misdiagnosing these entries as stream table corruption. Fixes: 48ec83bc ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Tested-by:
Robin Murphy <robin.murphy@arm.com> Reported-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Will Deacon authored
commit 3714ce1d upstream. Enabling stalling faults can result in hardware deadlock on poorly designed systems, particularly those with a PCI root complex upstream of the SMMU. Although it's not really Linux's job to save hardware integrators from their own misfortune, it *is* our job to stop userspace (e.g. VFIO clients) from hosing the system for everybody else, even if they might already be required to have elevated privileges. Given that the fault handling code currently executes entirely in IRQ context, there is nothing that can sensibly be done to recover from things like page faults anyway, so let's rip this code out for now and avoid the potential for deadlock. Fixes: 48ec83bc ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Reported-by:
Matt Evans <matt.evans@arm.com> Signed-off-by:
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Will Deacon authored
commit aea2037e upstream. In the unlikely event of a global command queue error, the ARM SMMUv3 driver attempts to convert the problematic command into a CMD_SYNC and resume the command queue. Unfortunately, this code is pretty badly broken: 1. It uses the index into the error string table as the CMDQ index, so we probably read the wrong entry out of the queue 2. The arguments to queue_write are the wrong way round, so we end up writing from the queue onto the stack. These happily cancel out, so the kernel is likely to stay alive, but the command queue will probably fault again when we resume. This patch fixes the error handling code to use the correct queue index and write back the CMD_SYNC to the faulting entry. Fixes: 48ec83bc ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices") Reported-by:
Diwakar Subraveti <Diwakar.Subraveti@arm.com> Signed-off-by:
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Robin Murphy authored
commit e633fc7a upstream. Due to the attribute bits being all over the place in the different types of short-descriptor PTEs, when remapping an existing entry, e.g. splitting a section into pages, we take the approach of decomposing the PTE attributes back to the IOMMU API flags to start from scratch. On inspection, though, the existing code seems to have got the read-only bit backwards and ignored the XN bit. How embarrassing... Fortunately the primary user so far, the Mediatek IOMMU, both never splits blocks (because it only serves non-overlapping DMA API calls) and also ignores permissions anyway, but let's put things right before any future users trip up. Fixes: e5fc9753 ("iommu/io-pgtable: Add ARMv7 short descriptor support") Signed-off-by:
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Robin Murphy authored
commit 3ec60043 upstream. Due to the limitations of having to wait until we see a device's DMA restrictions before we know how we want an IOVA domain initialised, there is a window for error if a DMA ops domain is allocated but later freed without ever being used. In that case, init_iova_domain() was never called, so calling put_iova_domain() from iommu_put_dma_cookie() ends up trying to take an uninitialised lock and crashing. Make things robust by skipping the call unless the IOVA domain actually has been initialised, as we probably should have done from the start. Fixes: 0db2e5d1 ("iommu: Implement common IOMMU ops for DMA mapping") Reported-by:
Nate Watterson <nwatters@codeaurora.org> Reviewed-by:
Eric Auger <eric.auger@redhat.com> Tested-by:
Joerg Roedel <jroedel@suse.de> Signed-off-by:
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Jiri Olsa authored
commit 33da54fa upstream. Michael reported 'perf mem -t store record' being broken. The reason is latest rework of this area: commit acbe613e ("perf tools: Add monitored events array") We don't mark perf_mem_events store record when -t store option is specified. Committer notes: Before: # perf mem -t store record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf evlist cycles:ppp # After: # perf mem -t store record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf evlist cpu/mem-stores/P # Reported-by:
Michael Petlan <mpetlan@redhat.com> Signed-off-by:
Jiri Olsa <jolsa@redhat.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Fixes: acbe613e ("perf tools: Add monitored events array") Link: http://lkml.kernel.org/r/1470905457-18311-1-git-send-email-jolsa@kernel.orgSigned-off-by:
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Peter Zijlstra authored
commit cca20946 upstream. Vincent reported triggering the WARN_ON_ONCE() in event_function_local(). While thinking through cases I noticed that by using event_function() directly, we miss the inactive case usually handled by event_function_call(). Therefore construct a blend of event_function_call() and event_function() that handles the cases relevant to event_function_local(). Reported-by:
Vince Weaver <vincent.weaver@maine.edu> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: fae3fde6 ("perf: Collapse and fix event_function_call() users") Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Anton Blanchard authored
commit 50de1a0c upstream. Commit 73cdf0c6 ("perf symbols: Record text offset in dso to calculate objdump address") started storing the offset of the text section for all DSOs: if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL)) dso->text_offset = tshdr.sh_addr - tshdr.sh_offset; Unfortunately this breaks debuginfo files, because we need to calculate the offset of the text section in the associated executable file. As a result perf annotate returns junk for all debuginfo files. Fix this by using runtime_ss->elf which should point at the executable when parsing a debuginfo file. Signed-off-by:
Anton Blanchard <anton@samba.org> Reviewed-by:
Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Tested-by:
Wang Nan <wangnan0@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Fixes: 73cdf0c6 ("perf symbols: Record text offset in dso to calculate objdump address") Link: http://lkml.kernel.org/r/20160813115533.6de17912@krytenSigned-off-by:
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Oleg Nesterov authored
commit 6c4687cc upstream. __replace_page() wronlgy calls mem_cgroup_cancel_charge() in "success" path, it should only do this if page_check_address() fails. This means that every enable/disable leads to unbalanced mem_cgroup_uncharge() from put_page(old_page), it is trivial to underflow the page_counter->count and trigger OOM. Reported-and-tested-by:
Brenden Blanco <bblanco@plumgrid.com> Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Reviewed-by:
Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Michal Hocko <mhocko@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Fixes: 00501b53 ("mm: memcontrol: rewrite charge API") Link: http://lkml.kernel.org/r/20160817153629.GB29724@redhat.comSigned-off-by:
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Robert Deliën authored
commit 6977495c upstream. Ivium Technologies uses the FTDI VID with custom PIDs for their line of electrochemical interfaces and the PalmSens they developed for PalmSens BV. Signed-off-by:
Robert Delien <robert@delien.nl> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Sheng-Hui J. Chu authored
commit ae34d12c upstream. BCM20706V2_EVAL is a WICED dev board designed with FT2232H USB 2.0 UART/FIFO IC. To support BCM920706V2_EVAL dev board for WICED development on Linux. Add the VID(0a5c) and PID(6422) to ftdi_sio driver to allow loading ftdi_sio for this board. Signed-off-by:
Sheng-Hui J. Chu <s.jeffrey.chu@gmail.com> Signed-off-by:
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Daniele Palmas authored
commit 01d7956b upstream. This patch adds a set of compositions for Telit LE920A4. Compositions in short are: 0x1207: tty + tty 0x1208: tty + adb + tty + tty 0x1211: tty + adb + ecm 0x1212: tty + adb 0x1213: ecm + tty 0x1214: tty + adb + ecm + tty telit_le922_blacklist_usbcfg3 is reused for compositions 0x1211 and 0x1214 due to the same interfaces positions. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
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Lubomir Rintel authored
commit cf1b1803 upstream. The device has four interfaces; the three serial ports ought to be handled by this driver: 00 Diagnostic interface serial port 01 NMEA device serial port 02 Mass storage (sd card) 03 Modem serial port The other product ids listed in the Windows driver are present already. Signed-off-by:
Lubomir Rintel <lkundrak@v3.sk> Signed-off-by:
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Alexey Klimov authored
commit 647024a7 upstream. udriver struct allocated by kzalloc() will not be freed if usb_register() and next calls fail. This patch fixes this by adding one more step with kfree(udriver) in error path. Signed-off-by:
Alexey Klimov <klimov.linux@gmail.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Mathias Nyman authored
commit f1f6d9a8 upstream. Remove the hcd after checking for the xhci last quirks, not before. This caused a hang on a Alpine Ridge xhci based maching which remove the whole xhci controller when unplugging the last usb device Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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Jim Lin authored
commit 88716a93 upstream. After a device is disconnected, xhci_stop_device() will be invoked in xhci_bus_suspend(). Also the "disconnect" IRQ will have ISR to invoke xhci_free_virt_device() in this sequence. xhci_irq -> xhci_handle_event -> handle_cmd_completion -> xhci_handle_cmd_disable_slot -> xhci_free_virt_device If xhci->devs[slot_id] has been assigned to NULL in xhci_free_virt_device(), then virt_dev->eps[i].ring in xhci_stop_device() may point to an invlid address to cause kernel panic. virt_dev = xhci->devs[slot_id]; : if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) [] Unable to handle kernel paging request at virtual address 00001a68 [] pgd=ffffffc001430000 [] [00001a68] *pgd=000000013c807003, *pud=000000013c807003, *pmd=000000013c808003, *pte=0000000000000000 [] Internal error: Oops: 96000006 [#1] PREEMPT SMP [] CPU: 0 PID: 39 Comm: kworker/0:1 Tainted: G U [] Workqueue: pm pm_runtime_work [] task: ffffffc0bc0e0bc0 ti: ffffffc0bc0ec000 task.ti: ffffffc0bc0ec000 [] PC is at xhci_stop_device.constprop.11+0xb4/0x1a4 This issue is found when running with realtek ethernet device (0bda:8153). Signed-off-by:
Jim Lin <jilin@nvidia.com> Signed-off-by:
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Mathias Nyman authored
commit 33be1265 upstream. Fix "Command completion event does not match command" errors by always handling the command ring stopped events. The command ring stopped event is generated as a result of aborting or stopping the command ring with a register write. It is not caused by a command in the command queue, and thus won't have a matching command in the comman list. Solve it by handling the command ring stopped event before checking for a matching command. In most command time out cases we abort the command ring, and get a command ring stopped event. The events command pointer will point at the current command ring dequeue, which in most cases matches the timed out command in the command list, and no error messages are seen. If we instead get a command aborted event before the command ring stopped event, the abort event will increse the command ring dequeue pointer, and the following command ring stopped events command pointer will point at the next, not yet queued command. This case triggered the error message Signed-off-by:
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Mathieu Laurendeau authored
commit 327b21da upstream. Fix io submissions failing with ENODEV. Signed-off-by:
Mathieu Laurendeau <mat.lau@laposte.net> Fixes: 7fe3976e ("gadget: switch ep_io_operations to ->read_iter/->write_iter") Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Dan Carpenter authored
commit 7442e6db upstream. The udc->eps[] array has USB_MAX_ENDPOINTS elements so > should be >=. Fixes: 3948f0e0 ('usb: add Freescale QE/CPM USB peripheral controller driver') Acked-by:
Peter Chen <peter.chen@nxp.com> Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Alan Stern authored
commit aed9d65a upstream. Erroneous or malicious endpoint descriptors may have non-zero bits in reserved positions, or out-of-bounds values. This patch helps prevent these from causing problems by bounds-checking the wMaxPacketValue entries in endpoint descriptors and capping the values at the maximum allowed. This issue was first discovered and tests were conducted by Jake Lamberson <jake.lamberson1@gmail.com>, an intern working for Rosie Hall. Signed-off-by:
roswest <roswest@cisco.com> Tested-by:
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Yoshihiro Shimoda authored
commit e0cb1b84 upstream. According to the datasheet, SDn clocks are from the SDSRC clock. And the SDSRC has a 1/2 divider. So, we should have ".sdsrc" as an internal core clock. Otherwise, since the sdhi driver will calculate clock for a sd card using the wrong parent clock rate, and then performance will be not good. Fixes: 90c073e5 ("clk: shmobile: r8a7795: Add SD divider support") Signed-off-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by:
Dirk Behme <dirk.behme@de.bosch.com> Tested-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> Signed-off-by:
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Yoshihiro Shimoda authored
commit 700aa7ff upstream. This patch fixes an issue that isochronous transfer's data is possible to be lost as a workaround. Since this driver uses a workqueue to start the dmac, the transfer is possible to be delayed when system load is high. Fixes: 6e4b74e4 ("usb: renesas: fix scheduling in atomic context bug") Signed-off-by:
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Yoshihiro Shimoda authored
commit 9ab967e6 upstream. This patch fixes an issue that unexpected BRDY interruption happens when the usb_ep_{enable,disable}() are called with different direction. In this case, the driver will cause the following message: renesas_usbhs e6590000.usb: irq_ready run_error 1 : -16 This issue causes the followings: 1) A pipe is enabled as transmission 2) The pipe sent a data 3) The pipe is disabled and re-enabled as reception. 4) The pipe got a queue Since the driver doesn't clear the BRDYSTS flags after 2) above, the issue happens. If we add such clearing the flags into the driver, the code will become complicate. So, this patch clears the BRDYSTS flag of reception in usbhsg_ep_enable() to avoid complicate. Signed-off-by:
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Yoshihiro Shimoda authored
commit 772ce812 upstream. Since R-Car Gen3 SoC has the USB-DMAC, this driver should set dparam->has_usb_dmac to 1. Otherwise, behavior of this driver and the usb-dmac driver will be mismatch, then sometimes receiving data will be corrupt. Fixes: de18757e ("usb: renesas_usbhs: add R-Car Gen3 power control") Signed-off-by:
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Alan Stern authored
commit 07d316a2 upstream. The locking in hub_activate() is not adequate to provide full mutual exclusion with hub_quiesce(). The subroutine locks the hub's usb_interface, but the callers of hub_quiesce() (such as hub_pre_reset() and hub_event()) hold the lock to the hub's usb_device. This patch changes hub_activate() to make it acquire the same lock as those other routines. Signed-off-by:
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Alan Stern authored
commit ca5cbc8b upstream. The early-exit pathway in hub_activate, added by commit e50293ef ("USB: fix invalid memory access in hub_activate()") needs improvement. It duplicates code that is already present at the end of the subroutine, and it neglects to undo the effect of a usb_autopm_get_interface_no_resume() call. This patch fixes both problems by making the early-exit pathway jump directly to the end of the subroutine. It simplifies the code at the end by merging two conditionals that actually test the same condition although they appear different: If type < HUB_INIT3 then type must be either HUB_INIT2 or HUB_INIT, and it can't be HUB_INIT because in that case the subroutine would have exited earlier. Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
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Viresh Kumar authored
commit 6bb47e8a upstream. Memory leak and unbalanced reference count: If the hub gets disconnected while the core is still activating it, this can result in leaking memory of few USB structures. This will happen if we have done a kref_get() from hub_activate() and scheduled a delayed work item for HUB_INIT2/3. Now if hub_disconnect() gets called before the delayed work expires, then we will cancel the work from hub_quiesce(), but wouldn't do a kref_put(). And so the unbalance. kmemleak reports this as (with the commit e50293ef backported to 3.10 kernel with other changes, though the same is true for mainline as well): unreferenced object 0xffffffc08af5b800 (size 1024): comm "khubd", pid 73, jiffies 4295051211 (age 6482.350s) hex dump (first 32 bytes): 30 68 f3 8c c0 ff ff ff 00 a0 b2 2e c0 ff ff ff 0h.............. 01 00 00 00 00 00 00 00 00 94 7d 40 c0 ff ff ff ..........}@.... backtrace: [<ffffffc0003079ec>] create_object+0x148/0x2a0 [<ffffffc000cc150c>] kmemleak_alloc+0x80/0xbc [<ffffffc000303a7c>] kmem_cache_alloc_trace+0x120/0x1ac [<ffffffc0006fa610>] hub_probe+0x120/0xb84 [<ffffffc000702b20>] usb_probe_interface+0x1ec/0x298 [<ffffffc0005d50cc>] driver_probe_device+0x160/0x374 [<ffffffc0005d5308>] __device_attach+0x28/0x4c [<ffffffc0005d3164>] bus_for_each_drv+0x78/0xac [<ffffffc0005d4ee0>] device_attach+0x6c/0x9c [<ffffffc0005d42b8>] bus_probe_device+0x28/0xa0 [<ffffffc0005d23a4>] device_add+0x324/0x604 [<ffffffc000700fcc>] usb_set_configuration+0x660/0x6cc [<ffffffc00070a350>] generic_probe+0x44/0x84 [<ffffffc000702914>] usb_probe_device+0x54/0x74 [<ffffffc0005d50cc>] driver_probe_device+0x160/0x374 [<ffffffc0005d5308>] __device_attach+0x28/0x4c Deadlocks: If the hub gets disconnected early enough (i.e. before INIT2/INIT3 are finished and the init_work is still queued), the core may call hub_quiesce() after acquiring interface device locks and it will wait for the work to be cancelled synchronously. But if the work handler is already running in parallel, it may try to acquire the same interface device lock and this may result in deadlock. Fix both the issues by removing the call to cancel_delayed_work_sync(). Fixes: e50293ef ("USB: fix invalid memory access in hub_activate()") Reported-by:
Manu Gautam <mgautam@codeaurora.org> Signed-off-by:
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Felipe Balbi authored
commit 7c705dfe upstream. If we stop earlier due to short packet, we will not be able to giveback all TRBs. Cc: Brian E Rogers <brian.e.rogers@intel.com> Signed-off-by:
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Felipe Balbi authored
commit e5b36ae2 upstream. DWC3 has one interesting peculiarity with chained transfers. If we setup N chained transfers and we get a short packet before processing all N TRBs, DWC3 will (conditionally) issue a XferComplete or XferInProgress event and retire all TRBs from the one which got a short packet to the last without clearing their HWO bits. This means SW must clear HWO bit manually, which this patch is doing. Cc: Brian E Rogers <brian.e.rogers@intel.com> Signed-off-by:
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Felipe Balbi authored
commit c7de5734 upstream. When using SG lists, we would end up setting request->actual to: num_mapped_sgs * (request->length - count) Let's fix that up by incrementing request->actual only once. Reported-by:
Brian E Rogers <brian.e.rogers@intel.com> Signed-off-by:
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Heikki Krogerus authored
commit 4491ed50 upstream. Intel Kabylake PCH has the same DWC3 than Intel Sunrisepoint. Add the new ID to the supported devices. Signed-off-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by:
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Peter Chen authored
commit 528d2813 upstream. For case 14 and case 21, their correct return value is the number of bytes transferred, so it is a positive integer. But in usbtest_ioctl, it takes non-zero as false return value for usbtest_do_ioctl, so it will treat the correct test as wrong test, then the time on tests will be the minus value. Signed-off-by:
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Lu Baolu authored
commit 53958751 upstream. In sg_timeout(), req->status is set to "-ETIMEDOUT" before calling into usb_sg_cancel(). usb_sg_cancel() will do nothing and return directly if req->status has been set to a non-zero value. This will cause driver hang whenever transfer time out is triggered. This patch fixes this issue. It could be backported to stable kernel with version later than v3.15. Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Suggested-by:
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Jiri Slaby authored
commit 70f7ca9a upstream. usbdev_mmap allocates a buffer. The size of the buffer is determined by a user. So with this code (no need to be root): int fd = open("/dev/bus/usb/001/001", O_RDONLY); mmap(NULL, 0x800000, PROT_READ, MAP_SHARED, fd, 0); we can see a warning: WARNING: CPU: 0 PID: 21771 at ../mm/page_alloc.c:3563 __alloc_pages_slowpath+0x1036/0x16e0() ... Call Trace: [<ffffffff8117a3ae>] ? warn_slowpath_null+0x2e/0x40 [<ffffffff815178b6>] ? __alloc_pages_slowpath+0x1036/0x16e0 [<ffffffff81516880>] ? warn_alloc_failed+0x250/0x250 [<ffffffff8151226b>] ? get_page_from_freelist+0x75b/0x28b0 [<ffffffff815184e3>] ? __alloc_pages_nodemask+0x583/0x6b0 [<ffffffff81517f60>] ? __alloc_pages_slowpath+0x16e0/0x16e0 [<ffffffff810565d4>] ? dma_generic_alloc_coherent+0x104/0x220 [<ffffffffa0269e56>] ? hcd_buffer_alloc+0x1d6/0x3e0 [usbcore] [<ffffffffa0269c80>] ? hcd_buffer_destroy+0xa0/0xa0 [usbcore] [<ffffffffa0228f05>] ? usb_alloc_coherent+0x65/0x90 [usbcore] [<ffffffffa0275c05>] ? usbdev_mmap+0x1a5/0x770 [usbcore] ... Allocations like this one should be marked as __GFP_NOWARN. So do so. The size could be also clipped by something like: if (size >= (1 << (MAX_ORDER + PAGE_SHIFT - 1))) return -ENOMEM; But I think the overall limit of 16M (by usbfs_increase_memory_usage) is enough, so that we only silence the warning here. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Markus Rechberger <mrechberger@gmail.com> Fixes: f7d34b44 (USB: Add support for usbfs zerocopy.) Signed-off-by:
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