Update to 4.6.2
This commit is contained in:
Ben Hutchings
parent
0111b51fe6
commit
1537ff1314
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@ -1,3 +1,121 @@
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linux (4.6.2-1) UNRELEASED; urgency=medium
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* New upstream stable update:
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https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
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- f2fs: fix deadlock when flush inline data
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- [mips*] math-emu: Fix jalr emulation when rd == $0
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- [mips*] Avoid using unwind_stack() with usermode
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- [mips*] Fix siginfo.h to use strict posix types
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- [mips*] Fix uapi include in exported asm/siginfo.h
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- [mips*] Fix watchpoint restoration
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- [mips*] Flush highmem pages in __flush_dcache_page
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- [mips*] Handle highmem pages in __update_cache
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- [mips*] Sync icache & dcache in set_pte_at
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- [mips*] Reserve nosave data for hibernation
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- [mips*el/loongson-3] Reserve 32MB for RS780E integrated GPU
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- [mips*] Use copy_s.fmt rather than copy_u.fmt
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- [mips*] Prevent "restoration" of MSA context in non-MSA kernels
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- [mips*] ptrace: Fix FP context restoration FCSR regression
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- [mips*] ptrace: Prevent writes to read-only FCSR bits
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- [mips*] lib: Mark intrinsics notrace
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- [mips*] VDSO: Build with `-fno-strict-aliasing'
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- affs: fix remount failure when there are no options changed
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- ASoC: ak4642: Enable cache usage to fix crashes on resume
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- Input: uinput - handle compat ioctl for UI_SET_PHYS
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- Input: xpad - move pending clear to the correct location
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- Input: xpad - prevent spurious input from wired Xbox 360 controllers
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- [armhf] sun4i: dt: Enable dram gate 5 (tve0 clock) for simplefb TV output
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- [armhf] sun7i: dt: Enable dram gate 5 (tve0 clock) for simplefb TV output
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- [armhf] mvebu: fix GPIO config on the Linksys boards
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- [armhf] dts: exynos: Add interrupt line to MAX8997 PMIC on
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exynos4210-trats
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- ath9k: Fix LED polarity for some Mini PCI AR9220 MB92 cards.
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- ath10k: fix firmware assert in monitor mode
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- ath10k: fix rx_channel during hw reconfigure
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- ath10k: fix kernel panic, move arvifs list head init before htt init
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- ath5k: Change led pin configuration for compaq c700 laptop
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- [armhf] hwrng: exynos - Fix unbalanced PM runtime put on timeout
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error path
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- rtlwifi: Fix logic error in enter/exit power-save mode
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- rtlwifi: pci: use dev_kfree_skb_irq instead of kfree_skb in
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rtl_pci_reset_trx_ring
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- Revert "lpfc: Delete unnecessary checks before the function call
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mempool_destroy"
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- aacraid: Start adapter after updating number of MSIX vectors
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- aacraid: Relinquish CPU during timeout wait
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- aacraid: Fix for aac_command_thread hang
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- aacraid: Fix for KDUMP driver hang
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- regulator: Try to resolve regulators supplies on registration
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- hwmon: (ads7828) Enable internal reference
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- [x86] mfd: intel_quark_i2c_gpio: Remove clock tree on error path
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- [x86] mfd: intel-lpss: Save register context on suspend
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- [x86] mfd: intel_soc_pmic_core: Terminate panel control GPIO lookup
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table correctly
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- PM / Runtime: Fix error path in pm_runtime_force_resume()
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- cpuidle: Indicate when a device has been unregistered
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- cpuidle: Fix cpuidle_state_is_coupled() argument in cpuidle_enter()
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- [armhf] clk: bcm2835: Fix PLL poweron
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- [armhf] clk: bcm2835: pll_off should only update CM_PLL_ANARST
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- [armhf] clk: bcm2835: divider value has to be 1 or more
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- [armhf] clk: bcm2835: correctly enable fractional clock support
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- [armhf] pinctrl: exynos5440: Use off-stack memory for pinctrl_gpio_range
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- PCI: Disable all BAR sizing for devices with non-compliant BARs
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- media: v4l2-compat-ioctl32: fix missing reserved field copy in
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put_v4l2_create32
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- PKCS#7: fix missing break on OID_sha224 case
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- mm: use phys_addr_t for reserve_bootmem_region() arguments
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- mm/compaction.c: fix zoneindex in kcompactd()
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- wait/ptrace: assume __WALL if the child is traced
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- batman-adv: Fix double neigh_node_put in batadv_v_ogm_route_update
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- [powerpc*] book3s64: Fix branching to OOL handlers in relocatable kernel
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- [powerpc*] eeh: Don't report error in eeh_pe_reset_and_recover()
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- [powerpc*] Revert "powerpc/eeh: Fix crash in eeh_add_device_early()
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on Cell"
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- [powerpc*] eeh: Restore initial state in eeh_pe_reset_and_recover()
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- xen/events: Don't move disabled irqs
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- xen: use same main loop for counting and remapping pages
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- sunrpc: fix stripping of padded MIC tokens
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- [x86] drm/gma500: Fix possible out of bounds read
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- [x86] drm/vmwgfx: Kill some lockdep warnings
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- [x86] drm/amdgpu: use drm_mode_vrefresh() rather than mode->vrefresh
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- [x86] drm/amdgpu: Fix hdmi deep color support.
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- [x86] drm/i915/fbdev: Fix num_connector references in
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intel_fb_initial_config()
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- drm/fb_helper: Fix references to dev->mode_config.num_connector
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- [x86] drm/i915: Discard previous atomic state on resume if connectors
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change
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- drm/atomic: Verify connector->funcs != NULL when clearing states
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- Bluetooth: 6lowpan: Fix memory corruption of ipv6 destination address
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- [x86] drm/i915/psr: Try to program link training times correctly
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- [x86] drm/i915: Respect DP++ adaptor TMDS clock limit
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- [x86] drm/i915: Enable/disable TMDS output buffers in DP++ adaptor
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as needed
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- [x86] drm/i915: Don't leave old junk in ilk active watermarks on readout
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- [x86] drm/i915: Fix watermarks for VLV/CHV
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- [armhf] drm/imx: Match imx-ipuv3-crtc components using device node in
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platform data
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- [x86] drm/i915: Pass the correct crtc state to .update_plane()
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- ext4: fix data exposure after a crash
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- ext4: fix hang when processing corrupted orphaned inode list
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- ext4: clean up error handling when orphan list is corrupted
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- ext4: fix check of dqget() return value in ext4_ioctl_setproject()
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- ext4: fix oops on corrupted filesystem
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- ext4: address UBSAN warning in mb_find_order_for_block()
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- nfs: avoid race that crashes nfs_init_commit
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- PM / sleep: Handle failures in device_suspend_late() consistently
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- mm: thp: avoid false positive VM_BUG_ON_PAGE in page_move_anon_rmap()
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- xfs: disallow rw remount on fs with unknown ro-compat features
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- xfs: Don't wrap growfs AGFL indexes
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- xfs: remove xfs_fs_evict_inode()
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- xfs: xfs_iflush_cluster fails to abort on error
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- xfs: fix inode validity check in xfs_iflush_cluster
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- xfs: skip stale inodes in xfs_iflush_cluster
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- [armhf] drm: msm: remove unused variable
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- IB/hfi1: Fix hard lockup due to not using save/restore spin lock
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- regulator: Fix deadlock during regulator registration
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-- Ben Hutchings <ben@decadent.org.uk> Thu, 09 Jun 2016 02:56:01 +0100
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linux (4.6.1-1) unstable; urgency=medium
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* New upstream stable update:
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@ -1,3 +1,8 @@
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[abi]
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ignore-changes:
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# Should not be used from OOT
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module:drivers/gpu/drm/imx/*
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[base]
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flavours:
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armmp
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@ -1,5 +1,8 @@
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[abi]
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abiname: 1
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ignore-changes:
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# Should not be used from OOT
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module:drivers/net/wireless/realtek/rtlwifi/*
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[base]
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arches:
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@ -1,3 +1,9 @@
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[abi]
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ignore-changes:
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# Was called by inline function flush_icache_page, which doesn't seem
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# to be used OOT
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__flush_icache_page
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[base]
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flavours:
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4kc-malta
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@ -1,3 +1,9 @@
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[abi]
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ignore-changes:
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# Was called by inline function flush_icache_page, which doesn't seem
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# to be used OOT
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__flush_icache_page
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[base]
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flavours:
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5kc-malta
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@ -1,3 +1,9 @@
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[abi]
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ignore-changes:
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# Was called by inline function flush_icache_page, which doesn't seem
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# to be used OOT
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__flush_icache_page
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[base]
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flavours:
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4kc-malta
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@ -1,42 +0,0 @@
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From: Paul Burton <paul.burton@imgtec.com>
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Date: Thu, 21 Apr 2016 12:43:57 +0100
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Subject: [1/2] MIPS: Disable preemption during prctl(PR_SET_FP_MODE, ...)
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Origin: https://git.kernel.org/linus/bd239f1e1429e7781096bf3884bdb1b2b1bb4f28
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Whilst a PR_SET_FP_MODE prctl is performed there are decisions made
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based upon whether the task is executing on the current CPU. This may
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change if we're preempted, so disable preemption to avoid such changes
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for the lifetime of the mode switch.
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Signed-off-by: Paul Burton <paul.burton@imgtec.com>
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Fixes: 9791554b45a2 ("MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS")
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Cc: stable <stable@vger.kernel.org> # v4.0+
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---
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arch/mips/kernel/process.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
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index 92880ce..ce55ea0 100644
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--- a/arch/mips/kernel/process.c
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+++ b/arch/mips/kernel/process.c
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@@ -601,6 +601,9 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
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if (!(value & PR_FP_MODE_FR) && cpu_has_fpu && cpu_has_mips_r6)
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return -EOPNOTSUPP;
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+ /* Proceed with the mode switch */
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+ preempt_disable();
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+
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/* Save FP & vector context, then disable FPU & MSA */
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if (task->signal == current->signal)
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lose_fpu(1);
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@@ -659,6 +662,7 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
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/* Allow threads to use FP again */
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atomic_set(&task->mm->context.fp_mode_switching, 0);
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+ preempt_enable();
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return 0;
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}
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--
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2.8.1
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@ -1,101 +0,0 @@
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From: Paul Burton <paul.burton@imgtec.com>
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Date: Thu, 21 Apr 2016 12:43:58 +0100
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Subject: [2/2] MIPS: Force CPUs to lose FP context during mode switches
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Origin: https://git.kernel.org/linus/6b8322576e9d325b65c54fbef64e4e8690ad70ce
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Commit 9791554b45a2 ("MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options
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for MIPS") added support for the PR_SET_FP_MODE prctl, which allows a
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userland program to modify its FP mode at runtime. This is most notably
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required if dynamic linking leads to the FP mode requirement changing at
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runtime from that indicated in the initial executable's ELF header. In
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order to avoid overhead in the general FP context restore code, it aimed
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to have threads in the process become unable to enable the FPU during a
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mode switch & have the thread calling the prctl syscall wait for all
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other threads in the process to be context switched at least once. Once
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that happens we can know that no thread in the process whose mode will
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be switched has live FP context, and it's safe to perform the mode
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switch. However in the (rare) case of modeswitches occurring in
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multithreaded programs this can lead to indeterminate delays for the
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thread invoking the prctl syscall, and the code monitoring for those
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context switches was woefully inadequate for all but the simplest cases.
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Fix this by broadcasting an IPI if other CPUs may have live FP context
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for an affected thread, with a handler causing those CPUs to relinquish
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their FPU ownership. Threads will then be allowed to continue running
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but will stall on the wait_on_atomic_t in enable_restore_fp_context if
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they attempt to use FP again whilst the mode switch is still in
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progress. The end result is less fragile poking at scheduler context
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switch counts & a more expedient completion of the mode switch.
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Signed-off-by: Paul Burton <paul.burton@imgtec.com>
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Fixes: 9791554b45a2 ("MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS")
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Cc: stable <stable@vger.kernel.org> # v4.0+
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---
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arch/mips/kernel/process.c | 40 +++++++++++++++++-----------------------
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1 file changed, 17 insertions(+), 23 deletions(-)
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diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
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index ce55ea0..e1b36a4 100644
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--- a/arch/mips/kernel/process.c
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+++ b/arch/mips/kernel/process.c
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@@ -580,11 +580,19 @@ int mips_get_process_fp_mode(struct task_struct *task)
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return value;
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}
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+static void prepare_for_fp_mode_switch(void *info)
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+{
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+ struct mm_struct *mm = info;
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+
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+ if (current->mm == mm)
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+ lose_fpu(1);
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+}
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+
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int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
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{
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const unsigned int known_bits = PR_FP_MODE_FR | PR_FP_MODE_FRE;
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- unsigned long switch_count;
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struct task_struct *t;
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+ int max_users;
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/* Check the value is valid */
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if (value & ~known_bits)
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@@ -613,31 +621,17 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value)
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smp_mb__after_atomic();
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/*
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- * If there are multiple online CPUs then wait until all threads whose
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- * FP mode is about to change have been context switched. This approach
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- * allows us to only worry about whether an FP mode switch is in
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- * progress when FP is first used in a tasks time slice. Pretty much all
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- * of the mode switch overhead can thus be confined to cases where mode
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- * switches are actually occurring. That is, to here. However for the
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- * thread performing the mode switch it may take a while...
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+ * If there are multiple online CPUs then force any which are running
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+ * threads in this process to lose their FPU context, which they can't
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+ * regain until fp_mode_switching is cleared later.
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*/
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if (num_online_cpus() > 1) {
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- spin_lock_irq(&task->sighand->siglock);
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-
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- for_each_thread(task, t) {
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- if (t == current)
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- continue;
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-
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- switch_count = t->nvcsw + t->nivcsw;
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-
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- do {
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- spin_unlock_irq(&task->sighand->siglock);
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- cond_resched();
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- spin_lock_irq(&task->sighand->siglock);
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- } while ((t->nvcsw + t->nivcsw) == switch_count);
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- }
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+ /* No need to send an IPI for the local CPU */
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+ max_users = (task->mm == current->mm) ? 1 : 0;
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- spin_unlock_irq(&task->sighand->siglock);
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+ if (atomic_read(¤t->mm->mm_users) > max_users)
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+ smp_call_function(prepare_for_fp_mode_switch,
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+ (void *)current->mm, 1);
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}
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/*
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@ -58,7 +58,7 @@ use of $(ARCH) needs to be moved after this.
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export KCONFIG_CONFIG
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@@ -367,6 +331,44 @@ AFLAGS_KERNEL =
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CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
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CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im
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CFLAGS_KCOV = -fsanitize-coverage=trace-pc
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+-include $(obj)/.kernelvariables
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@ -45,8 +45,6 @@ bugfix/x86/viafb-autoload-on-olpc-xo1.5-only.patch
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# Arch bug fixes
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bugfix/mips/MIPS-Allow-emulation-for-unaligned-LSDXC1-instructions.patch
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bugfix/mips/MIPS-Disable-preemption-during-prctl-PR_SET_FP_MODE.patch
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bugfix/mips/MIPS-Force-CPUs-to-lose-FP-context-during-mode-switc.patch
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bugfix/powerpc/powerpc-fix-sstep-compile-on-powerpcspe.patch
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bugfix/arm/dwc3-exynos-fix-deferred-probing-storm.patch
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