October 2019 - Linux-stable-mirror

FAILED: patch "[PATCH] gpiolib: don't clear FLAG_IS_OUT when emulating" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e735244e2cf068f98b6384681a38993e0517a838 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski <bgolaszewski(a)baylibre.com> Date: Tue, 1 Oct 2019 11:44:53 +0200 Subject: [PATCH] gpiolib: don't clear FLAG_IS_OUT when emulating open-drain/open-source When emulating open-drain/open-source by not actively driving the output lines - we're simply changing their mode to input. This is wrong as it will then make it impossible to change the value of such line - it's now considered to actually be in input mode. If we want to still use the direction_input() callback for simplicity then we need to set FLAG_IS_OUT manually in gpiod_direction_output() and not clear it in gpio_set_open_drain_value_commit() and gpio_set_open_source_value_commit(). Fixes: c663e5f56737 ("gpio: support native single-ended hardware drivers") Cc: stable(a)vger.kernel.org Reported-by: Kent Gibson <warthog618(a)gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski(a)baylibre.com> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bdbc1649eafa..5833e4f380d6 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3070,8 +3070,10 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) if (!ret) goto set_output_value; /* Emulate open drain by not actively driving the line high */ - if (value) - return gpiod_direction_input(desc); + if (value) { + ret = gpiod_direction_input(desc); + goto set_output_flag; + } } else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) { ret = gpio_set_config(gc, gpio_chip_hwgpio(desc), @@ -3079,8 +3081,10 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) if (!ret) goto set_output_value; /* Emulate open source by not actively driving the line low */ - if (!value) - return gpiod_direction_input(desc); + if (!value) { + ret = gpiod_direction_input(desc); + goto set_output_flag; + } } else { gpio_set_config(gc, gpio_chip_hwgpio(desc), PIN_CONFIG_DRIVE_PUSH_PULL); @@ -3088,6 +3092,17 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) set_output_value: return gpiod_direction_output_raw_commit(desc, value); + +set_output_flag: + /* + * When emulating open-source or open-drain functionalities by not + * actively driving the line (setting mode to input) we still need to + * set the IS_OUT flag or otherwise we won't be able to set the line + * value anymore. + */ + if (ret == 0) + set_bit(FLAG_IS_OUT, &desc->flags); + return ret; } EXPORT_SYMBOL_GPL(gpiod_direction_output); @@ -3448,8 +3463,6 @@ static void gpio_set_open_drain_value_commit(struct gpio_desc *desc, bool value) if (value) { ret = chip->direction_input(chip, offset); - if (!ret) - clear_bit(FLAG_IS_OUT, &desc->flags); } else { ret = chip->direction_output(chip, offset, 0); if (!ret) @@ -3479,8 +3492,6 @@ static void gpio_set_open_source_value_commit(struct gpio_desc *desc, bool value set_bit(FLAG_IS_OUT, &desc->flags); } else { ret = chip->direction_input(chip, offset); - if (!ret) - clear_bit(FLAG_IS_OUT, &desc->flags); } trace_gpio_direction(desc_to_gpio(desc), !value, ret); if (ret < 0)

5 years, 2 months

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FAILED: patch "[PATCH] gpiolib: don't clear FLAG_IS_OUT when emulating" failed to apply to 5.3-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.3-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e735244e2cf068f98b6384681a38993e0517a838 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski <bgolaszewski(a)baylibre.com> Date: Tue, 1 Oct 2019 11:44:53 +0200 Subject: [PATCH] gpiolib: don't clear FLAG_IS_OUT when emulating open-drain/open-source When emulating open-drain/open-source by not actively driving the output lines - we're simply changing their mode to input. This is wrong as it will then make it impossible to change the value of such line - it's now considered to actually be in input mode. If we want to still use the direction_input() callback for simplicity then we need to set FLAG_IS_OUT manually in gpiod_direction_output() and not clear it in gpio_set_open_drain_value_commit() and gpio_set_open_source_value_commit(). Fixes: c663e5f56737 ("gpio: support native single-ended hardware drivers") Cc: stable(a)vger.kernel.org Reported-by: Kent Gibson <warthog618(a)gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski(a)baylibre.com> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bdbc1649eafa..5833e4f380d6 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3070,8 +3070,10 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) if (!ret) goto set_output_value; /* Emulate open drain by not actively driving the line high */ - if (value) - return gpiod_direction_input(desc); + if (value) { + ret = gpiod_direction_input(desc); + goto set_output_flag; + } } else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) { ret = gpio_set_config(gc, gpio_chip_hwgpio(desc), @@ -3079,8 +3081,10 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) if (!ret) goto set_output_value; /* Emulate open source by not actively driving the line low */ - if (!value) - return gpiod_direction_input(desc); + if (!value) { + ret = gpiod_direction_input(desc); + goto set_output_flag; + } } else { gpio_set_config(gc, gpio_chip_hwgpio(desc), PIN_CONFIG_DRIVE_PUSH_PULL); @@ -3088,6 +3092,17 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) set_output_value: return gpiod_direction_output_raw_commit(desc, value); + +set_output_flag: + /* + * When emulating open-source or open-drain functionalities by not + * actively driving the line (setting mode to input) we still need to + * set the IS_OUT flag or otherwise we won't be able to set the line + * value anymore. + */ + if (ret == 0) + set_bit(FLAG_IS_OUT, &desc->flags); + return ret; } EXPORT_SYMBOL_GPL(gpiod_direction_output); @@ -3448,8 +3463,6 @@ static void gpio_set_open_drain_value_commit(struct gpio_desc *desc, bool value) if (value) { ret = chip->direction_input(chip, offset); - if (!ret) - clear_bit(FLAG_IS_OUT, &desc->flags); } else { ret = chip->direction_output(chip, offset, 0); if (!ret) @@ -3479,8 +3492,6 @@ static void gpio_set_open_source_value_commit(struct gpio_desc *desc, bool value set_bit(FLAG_IS_OUT, &desc->flags); } else { ret = chip->direction_input(chip, offset); - if (!ret) - clear_bit(FLAG_IS_OUT, &desc->flags); } trace_gpio_direction(desc_to_gpio(desc), !value, ret); if (ret < 0)

5 years, 2 months

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patch "staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS" added to staging-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 153c5d8191c26165dbbd2646448ca7207f7796d0 Mon Sep 17 00:00:00 2001 From: Colin Ian King <colin.king(a)canonical.com> Date: Mon, 14 Oct 2019 12:02:01 +0100 Subject: staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS Currently the exit return path when sme->key_idx >= NUM_WEPKEYS is via label 'exit' and this checks if result is non-zero, however result has not been initialized and contains garbage. Fix this by replacing the goto with a return with the error code. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: 0ca6d8e74489 ("Staging: wlan-ng: replace switch-case statements with macro") Signed-off-by: Colin Ian King <colin.king(a)canonical.com> Cc: stable <stable(a)vger.kernel.org> Link: https://lore.kernel.org/r/20191014110201.9874-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/staging/wlan-ng/cfg80211.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/staging/wlan-ng/cfg80211.c b/drivers/staging/wlan-ng/cfg80211.c index eee1998c4b18..fac38c842ac5 100644 --- a/drivers/staging/wlan-ng/cfg80211.c +++ b/drivers/staging/wlan-ng/cfg80211.c @@ -469,10 +469,8 @@ static int prism2_connect(struct wiphy *wiphy, struct net_device *dev, /* Set the encryption - we only support wep */ if (is_wep) { if (sme->key) { - if (sme->key_idx >= NUM_WEPKEYS) { - err = -EINVAL; - goto exit; - } + if (sme->key_idx >= NUM_WEPKEYS) + return -EINVAL; result = prism2_domibset_uint32(wlandev, DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID, -- 2.23.0

5 years, 2 months

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[RFT PATCH] xhci: Fix use-after-free regression in xhci clear hub TT implementation

by Mathias Nyman

commit ef513be0a905 ("usb: xhci: Add Clear_TT_Buffer") schedules work to clear TT buffer, but causes a use-after-free regression at the same time Make sure hub_tt_work finishes before endpoint is disabled, otherwise the work will dereference already freed endpoint and device related pointers. This was triggered when usb core failed to read the configuration descriptor of a FS/LS device during enumeration. xhci driver queued clear_tt_work while usb core freed and reallocated a new device for the next enumeration attempt. EHCI driver implents ehci_endpoint_disable() that makes sure clear_tt_work has finished before it returns, but xhci lacks this support. usb core will call hcd->driver->endpoint_disable() callback before disabling endpoints, so we want this in xhci as well. The added xhci_endpoint_disable() is based on ehci_endpoint_disable() Fixes: ef513be0a905 ("usb: xhci: Add Clear_TT_Buffer") Cc: <stable(a)vger.kernel.org> # v5.3 Reported-by: Johan Hovold <johan(a)kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman(a)linux.intel.com> --- drivers/usb/host/xhci.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 5cfbf9a04494..6e817686d04f 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3071,6 +3071,48 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, unsigned int ep_index, } } +static void xhci_endpoint_disable(struct usb_hcd *hcd, + struct usb_host_endpoint *host_ep) +{ + struct xhci_hcd *xhci; + struct xhci_virt_device *vdev; + struct xhci_virt_ep *ep; + struct usb_device *udev; + unsigned long flags; + unsigned int ep_index; + + xhci = hcd_to_xhci(hcd); +rescan: + spin_lock_irqsave(&xhci->lock, flags); + + udev = (struct usb_device *)host_ep->hcpriv; + if (!udev || !udev->slot_id) + goto done; + + vdev = xhci->devs[udev->slot_id]; + if (!vdev) + goto done; + + ep_index = xhci_get_endpoint_index(&host_ep->desc); + ep = &vdev->eps[ep_index]; + if (!ep) + goto done; + + /* wait for hub_tt_work to finish clearing hub TT */ + if (ep->ep_state & EP_CLEARING_TT) { + spin_unlock_irqrestore(&xhci->lock, flags); + schedule_timeout_uninterruptible(1); + goto rescan; + } + + if (ep->ep_state) + xhci_dbg(xhci, "endpoint disable with ep_state 0x%x\n", + ep->ep_state); +done: + host_ep->hcpriv = NULL; + spin_unlock_irqrestore(&xhci->lock, flags); +} + /* * Called after usb core issues a clear halt control message. * The host side of the halt should already be cleared by a reset endpoint @@ -5290,6 +5332,7 @@ static const struct hc_driver xhci_hc_driver = { .free_streams = xhci_free_streams, .add_endpoint = xhci_add_endpoint, .drop_endpoint = xhci_drop_endpoint, + .endpoint_disable = xhci_endpoint_disable, .endpoint_reset = xhci_endpoint_reset, .check_bandwidth = xhci_check_bandwidth, .reset_bandwidth = xhci_reset_bandwidth, -- 2.7.4

5 years, 2 months

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stable-rc/linux-4.14.y boot: 109 boots: 0 failed, 97 passed with 10 offline, 2 untried/unknown (v4.14.149)

by kernelci.org bot

stable-rc/linux-4.14.y boot: 109 boots: 0 failed, 97 passed with 10 offline, 2 untried/unknown (v4.14.149) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.14.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.14.y/kernel/v4.14.149/ Tree: stable-rc Branch: linux-4.14.y Git Describe: v4.14.149 Git Commit: e132c8d7b58d8dc2c1888f5768454550d1f3ea7b Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 68 unique boards, 22 SoC families, 13 builds out of 201 Boot Regressions Detected: arm64: defconfig: gcc-8: meson-gxl-s905d-p230: lab-baylibre: new failure (last pass: v4.14.148-61-g6f45e0e87a75) Offline Platforms: arm64: defconfig: gcc-8 apq8016-sbc: 1 offline lab arm: sunxi_defconfig: gcc-8 sun5i-r8-chip: 1 offline lab multi_v7_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab sun5i-r8-chip: 1 offline lab tegra20-iris-512: 1 offline lab davinci_all_defconfig: gcc-8 dm365evm,legacy: 1 offline lab qcom_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab tegra_defconfig: gcc-8 tegra20-iris-512: 1 offline lab --- For more info write to <info(a)kernelci.org>

5 years, 2 months

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stable-rc/linux-5.3.y boot: 138 boots: 1 failed, 128 passed with 9 offline (v5.3.6)

by kernelci.org bot

stable-rc/linux-5.3.y boot: 138 boots: 1 failed, 128 passed with 9 offline (v5.3.6) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-5.3.y/kernel/v5.3.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-5.3.y/kernel/v5.3.6/ Tree: stable-rc Branch: linux-5.3.y Git Describe: v5.3.6 Git Commit: a2fc8ee6676067f27d2f5c6e4d512adff3d9938c Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 87 unique boards, 26 SoC families, 17 builds out of 208 Boot Failure Detected: i386: i386_defconfig: gcc-8: qemu_i386: 1 failed lab Offline Platforms: arm64: defconfig: gcc-8 apq8016-sbc: 1 offline lab arm: sunxi_defconfig: gcc-8 sun5i-r8-chip: 1 offline lab sun7i-a20-bananapi: 1 offline lab multi_v7_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab sun5i-r8-chip: 1 offline lab davinci_all_defconfig: gcc-8 dm365evm,legacy: 1 offline lab qcom_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab --- For more info write to <info(a)kernelci.org>

5 years, 2 months

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stable-rc/linux-5.2.y boot: 135 boots: 0 failed, 126 passed with 9 offline (v5.2.21)

by kernelci.org bot

stable-rc/linux-5.2.y boot: 135 boots: 0 failed, 126 passed with 9 offline (v5.2.21) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-5.2.y/kernel/v5.2.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-5.2.y/kernel/v5.2.21/ Tree: stable-rc Branch: linux-5.2.y Git Describe: v5.2.21 Git Commit: e91ef5bcdeda8956eb9f1972ed90198b698dca0f Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 84 unique boards, 26 SoC families, 17 builds out of 209 Offline Platforms: arm64: defconfig: gcc-8 apq8016-sbc: 1 offline lab arm: sunxi_defconfig: gcc-8 sun5i-r8-chip: 1 offline lab sun7i-a20-bananapi: 1 offline lab multi_v7_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab sun5i-r8-chip: 1 offline lab davinci_all_defconfig: gcc-8 dm365evm,legacy: 1 offline lab qcom_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab --- For more info write to <info(a)kernelci.org>

5 years, 2 months

1
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[PATCH v4 3/3] tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations

by Jarkko Sakkinen

From: Vadim Sukhomlinov <sukhomlinov(a)google.com> commit db4d8cb9c9f2af71c4d087817160d866ed572cc9 upstream TPM 2.0 Shutdown involve sending TPM2_Shutdown to TPM chip and disabling future TPM operations. TPM 1.2 behavior was different, future TPM operations weren't disabled, causing rare issues. This patch ensures that future TPM operations are disabled. Fixes: d1bd4a792d39 ("tpm: Issue a TPM2_Shutdown for TPM2 devices.") Cc: stable(a)vger.kernel.org Signed-off-by: Vadim Sukhomlinov <sukhomlinov(a)google.com> [dianders: resolved merge conflicts with mainline] Signed-off-by: Douglas Anderson <dianders(a)chromium.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> --- drivers/char/tpm/tpm-chip.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c index 0eca20c5a80c..ac8a3812fbcd 100644 --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -158,12 +158,11 @@ static int tpm_class_shutdown(struct device *dev) { struct tpm_chip *chip = container_of(dev, struct tpm_chip, dev); - if (chip->flags & TPM_CHIP_FLAG_TPM2) { - down_write(&chip->ops_sem); + down_write(&chip->ops_sem); + if (chip->flags & TPM_CHIP_FLAG_TPM2) tpm2_shutdown(chip, TPM2_SU_CLEAR); - chip->ops = NULL; - up_write(&chip->ops_sem); - } + chip->ops = NULL; + up_write(&chip->ops_sem); return 0; } -- 2.20.1

5 years, 2 months

2
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stable-rc/linux-4.19.y boot: 124 boots: 0 failed, 116 passed with 8 offline (v4.19.79)

by kernelci.org bot

stable-rc/linux-4.19.y boot: 124 boots: 0 failed, 116 passed with 8 offline (v4.19.79) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.19.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.19.y/kernel/v4.19.79/ Tree: stable-rc Branch: linux-4.19.y Git Describe: v4.19.79 Git Commit: dafd634415a7f9892a6fcc99c540fe567ab42c92 Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 76 unique boards, 23 SoC families, 15 builds out of 206 Offline Platforms: arm64: defconfig: gcc-8 apq8016-sbc: 1 offline lab arm: sunxi_defconfig: gcc-8 sun5i-r8-chip: 1 offline lab multi_v7_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab sun5i-r8-chip: 1 offline lab davinci_all_defconfig: gcc-8 dm365evm,legacy: 1 offline lab qcom_defconfig: gcc-8 qcom-apq8064-cm-qs600: 1 offline lab qcom-apq8064-ifc6410: 1 offline lab --- For more info write to <info(a)kernelci.org>

5 years, 2 months

1
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[PATCH for-stable-4.19 0/3] ACPI, arm64: Backport for ACPI PPTT 6.3 thread flag

by John Garry

This series is a backport of the ACPI PPTT 6.3 thread flag feature for supporting arm64 systems. The background is that some arm64 implementations are broken, in that they incorrectly advertise that a CPU is mutli-threaded, when it is not - the HiSilicon Taishanv110 rev 2, aka tsv110, being an example. This leads to the system topology being incorrect. The reason being that arm64 topology code uses a combination of ACPI PPTT (Processor Properties Topology Table) and the system MPIDR (Multiprocessor Affinity Register) MT bit to determine the topology. Until ACPI 6.3, the PPTT did not have any method to determine whether a CPU was multi-threaded, so only the MT bit is used - hence the broken topology for some systems. In ACPI 6.3, a PPTT thread flag was introduced, which - when supported - would be used by the kernel to determine really if a CPU is multi-threaded or not, so that we don't get incorrect topology. RFC originally sent: https://lkml.org/lkml/2019/10/10/724 Erik Schmauss (1): ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags Jeremy Linton (2): ACPI/PPTT: Add support for ACPI 6.3 thread flag arm64: topology: Use PPTT to determine if PE is a thread arch/arm64/kernel/topology.c | 19 ++++++++++--- drivers/acpi/pptt.c | 52 ++++++++++++++++++++++++++++++++++++ include/acpi/actbl2.h | 7 +++-- include/linux/acpi.h | 5 ++++ 4 files changed, 77 insertions(+), 6 deletions(-) -- 2.17.1

5 years, 2 months

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Linux-stable-mirror October 2019