Patch "Revert "cpufreq: Fix governor module removal race"" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    Revert "cpufreq: Fix governor module removal race"

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-cpufreq-fix-governor-module-removal-race.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Fri Apr  6 10:31:28 CEST 2018
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 6 Apr 2018 09:04:23 +0200
Subject: Revert "cpufreq: Fix governor module removal race"

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This reverts commit 3f7dfb7fcf98a7e73dee018c4a68537ce7fec646 which was
commit a8b149d32b663c1a4105273295184b78f53d33cf upstream.

The backport was not correct, so just drop it entirely.

Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/cpufreq/cpufreq.c |    6 ------
 1 file changed, 6 deletions(-)

--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -551,8 +551,6 @@ static int cpufreq_parse_governor(char *
 			*governor = t;
 			err = 0;
 		}
-		if (t && !try_module_get(t->owner))
-			t = NULL;
 
 		mutex_unlock(&cpufreq_governor_mutex);
 	}
@@ -671,10 +669,6 @@ static ssize_t store_scaling_governor(st
 		return -EINVAL;
 
 	ret = cpufreq_set_policy(policy, &new_policy);
-
-	if (new_policy.governor)
-		module_put(new_policy.governor->owner);
-
 	return ret ? ret : count;
 }
 


Patches currently in stable-queue which might be from gregkh@linuxfoundation.org are

queue-4.4/rdma-ucma-check-af-family-prior-resolving-address.patch
queue-4.4/documentation-pinctrl-palmas-add-ti-palmas-powerhold-override-property-definition.patch
queue-4.4/netfilter-x_tables-add-and-use-xt_check_proc_name.patch
queue-4.4/usb-serial-ftdi_sio-add-support-for-harman-firmwarehubemulator.patch
queue-4.4/dm-ioctl-remove-double-parentheses.patch
queue-4.4/arm64-avoid-overflow-in-va_start-and-page_offset.patch
queue-4.4/nospec-move-array_index_nospec-parameter-checking-into-separate-macro.patch
queue-4.4/audit-add-tty-field-to-login-event.patch
queue-4.4/usb-gadget-change-len-to-size_t-on-alloc_ep_req.patch
queue-4.4/revert-mtip32xx-use-runtime-tag-to-initialize-command-header.patch
queue-4.4/vt-change-sgr-21-to-follow-the-standards.patch
queue-4.4/genirq-use-cpumask_available-for-check-of-cpumask-variable.patch
queue-4.4/xfrm_user-uncoditionally-validate-esn-replay-attribute-struct.patch
queue-4.4/selinux-remove-redundant-check-for-unknown-labeling-behavior.patch
queue-4.4/fs-compat-remove-warning-from-compatible_ioctl.patch
queue-4.4/usb-dwc2-improve-gadget-state-disconnection-handling.patch
queue-4.4/crypto-x86-cast5-avx-fix-ecb-encryption-when-long-sg-follows-short-one.patch
queue-4.4/net-cavium-liquidio-fix-up-avoid-dma_unmap_single-on-uninitialized-ndata.patch
queue-4.4/writeback-fix-the-wrong-congested-state-variable-definition.patch
queue-4.4/bluetooth-fix-missing-encryption-refresh-on-security-request.patch
queue-4.4/rdma-ucma-don-t-allow-join-attempts-for-unsupported-af-family.patch
queue-4.4/revert-arm-dts-omap3-n900-fix-the-audio-codec-s-reset-pin.patch
queue-4.4/mtd-jedec_probe-fix-crash-in-jedec_read_mfr.patch
queue-4.4/input-i8042-add-lenovo-thinkpad-l460-to-i8042-reset-list.patch
queue-4.4/perf-hwbp-simplify-the-perf-hwbp-code-fix-documentation.patch
queue-4.4/revert-pci-msi-stop-disabling-msi-msi-x-in-pci_device_shutdown.patch
queue-4.4/rdma-ucma-check-that-device-is-connected-prior-to-access-it.patch
queue-4.4/scsi-virtio_scsi-always-read-vpd-pages-for-multiqueue-too.patch
queue-4.4/media-usbtv-prevent-double-free-in-error-case.patch
queue-4.4/revert-arm-dts-am335x-pepper-fix-the-audio-codec-s-reset-pin.patch
queue-4.4/staging-comedi-ni_mio_common-ack-ai-fifo-error-interrupts.patch
queue-4.4/alsa-pcm-potential-uninitialized-return-values.patch
queue-4.4/usb-gadget-define-free_ep_req-as-universal-function.patch
queue-4.4/jiffies.h-declare-jiffies-and-jiffies_64-with-____cacheline_aligned_in_smp.patch
queue-4.4/rdma-ucma-fix-use-after-free-access-in-ucma_close.patch
queue-4.4/revert-cpufreq-fix-governor-module-removal-race.patch
queue-4.4/selinux-remove-unnecessary-check-of-array-base-in-selinux_set_mapping.patch
queue-4.4/xfrm-refuse-to-insert-32-bit-userspace-socket-policies-on-64-bit-systems.patch
queue-4.4/pci-make-pci_rom_address_mask-a-32-bit-constant.patch
queue-4.4/netfilter-bridge-ebt_among-add-more-missing-match-size-checks.patch
queue-4.4/md-raid10-reset-the-first-at-the-end-of-loop.patch
queue-4.4/kprobes-x86-fix-to-set-rwx-bits-correctly-before-releasing-trampoline.patch
queue-4.4/rdma-ucma-ensure-that-cm_id-exists-prior-to-access-it.patch
queue-4.4/llist-clang-introduce-member_address_is_nonnull.patch
queue-4.4/usb-gadget-fix-usb_ep_align_maybe-endianness-and-new-usb_ep_align.patch
queue-4.4/frv-declare-jiffies-to-be-located-in-the-.data-section.patch
queue-4.4/fs-proc-stop-trying-to-report-thread-stacks.patch
queue-4.4/arm-dts-am57xx-beagle-x15-common-add-overide-powerhold-property.patch
queue-4.4/rdma-ucma-introduce-safer-rdma_addr_size-variants.patch
queue-4.4/netfilter-nf_nat_h323-fix-logical-not-parentheses-warning.patch
queue-4.4/mei-remove-dev_err-message-on-an-unsupported-ioctl.patch
queue-4.4/net-hns-fix-ethtool-private-flags.patch
queue-4.4/rdma-ucma-check-that-device-exists-prior-to-accessing-it.patch
queue-4.4/spi-davinci-fix-up-dma_mapping_error-incorrect-patch.patch
queue-4.4/net-xfrm-use-preempt-safe-this_cpu_read-in-ipcomp_alloc_tfms.patch
queue-4.4/tty-provide-tty_name-even-without-config_tty.patch
queue-4.4/usb-gadget-f_hid-fix-prevent-accessing-released-memory.patch
queue-4.4/arm-dts-dra7-add-power-hold-and-power-controller-properties-to-palmas.patch
queue-4.4/input-mousedev-fix-implicit-conversion-warning.patch
queue-4.4/input-i8042-enable-mux-on-sony-vaio-vgn-cs-series-to-fix-touchpad.patch
queue-4.4/netfilter-ctnetlink-make-some-parameters-integer-to-avoid-enum-mismatch.patch
queue-4.4/nospec-kill-array_index_nospec_mask_check.patch
queue-4.4/alsa-pcm-use-dma_bytes-as-size-parameter-in-dma_mmap_coherent.patch
queue-4.4/revert-ip6_vti-adjust-vti-mtu-according-to-mtu-of-lower-device.patch
queue-4.4/parport_pc-add-support-for-wch-ch382l-pci-e-single-parallel-port-card.patch
queue-4.4/usb-gadget-align-buffer-size-when-allocating-for-out-endpoint.patch
queue-4.4/cpumask-add-helper-cpumask_available.patch
queue-4.4/acpi-pci-irq-remove-redundant-check-for-null-string-pointer.patch
queue-4.4/usb-serial-ftdi_sio-add-rt-systems-vx-8-cable.patch
queue-4.4/usb-serial-cp210x-add-eldat-easywave-rx09-id.patch
queue-4.4/crypto-ahash-fix-early-termination-in-hash-walk.patch
queue-4.4/partitions-msdos-unable-to-mount-ufs-44bsd-partitions.patch