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Remove the context banks of cdsp from fastrpc device node
for SDM636
Change-Id: I9a238ad21f253da3c4f707a71009e02e9660ed1b
Acked-by: Chenna Kesava Raju <chennak@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>
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Enable ATL1C for ethernet driver, DEVMEM for debugging memory
mapped registers and PPS for the pulse per second driver.
Change-Id: I169a2f34b352008bd6c4d72111c53cdcdf16e566
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
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Create support for early mounting of system and vendor partitions
in the kernel on msm8996 platforms.
Change-Id: I3caf26d3e2a371ccd63a2823fe3e487461a8dd08
Signed-off-by: Anthony Mah <amah@codeaurora.org>
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Remove cdsp pil node and corresponding carveout region,
also add 1MB buffer at MBA boundary for sdm636.
Change-Id: I6adb0f2ed37559b91d0b607c729e66142f49e86f
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
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Add the required device tree files to support all the platforms
with SDM636 and SDA636.
Change-Id: Iff673b1626acb2bb83c0b7706b118e24919c3934
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
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Add the laser device with the required GPIO and
regulator configuration for sdm630 MTP.
Change-Id: I8800d870c41dfc7a74ab2adcf4f0349af8e5f87d
Signed-off-by: Wei Ding <weiding@codeaurora.org>
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On APQ8096 ADP Lite board, the secondary ADV7533 bridge chip is
removed and its instance is already disabled in current DTS hence
related sde_kms should also remove it. Otherwise, component master
could not find the component for the display instance and causes
drm driver probe failure.
Change-Id: I0fd694cf33eaf8b29ca86efd2ea105ac565bdba1
CRs-Fixed: 2091671
Signed-off-by: Yujun Zhang <yujunzhang@codeaurora.org>
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* refs/heads/tmp-9f764bb
Linux 4.4.80
ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused
scsi: snic: Return error code on memory allocation failure
scsi: fnic: Avoid sending reset to firmware when another reset is in progress
HID: ignore Petzl USB headlamp
ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion
sh_eth: enable RX descriptor word 0 shift on SH7734
nvmem: imx-ocotp: Fix wrong register size
arm64: mm: fix show_pte KERN_CONT fallout
vfio-pci: Handle error from pci_iomap
video: fbdev: cobalt_lcdfb: Handle return NULL error from devm_ioremap
perf symbols: Robustify reading of build-id from sysfs
perf tools: Install tools/lib/traceevent plugins with install-bin
xfrm: Don't use sk_family for socket policy lookups
tools lib traceevent: Fix prev/next_prio for deadline tasks
Btrfs: adjust outstanding_extents counter properly when dio write is split
usb: gadget: Fix copy/pasted error message
ACPI / scan: Prefer devices without _HID/_CID for _ADR matching
ARM: s3c2410_defconfig: Fix invalid values for NF_CT_PROTO_*
ARM64: zynqmp: Fix i2c node's compatible string
ARM64: zynqmp: Fix W=1 dtc 1.4 warnings
dmaengine: ti-dma-crossbar: Add some 'of_node_put()' in error path.
dmaengine: ioatdma: workaround SKX ioatdma version
dmaengine: ioatdma: Add Skylake PCI Dev ID
openrisc: Add _text symbol to fix ksym build error
irqchip/mxs: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
ASoC: nau8825: fix invalid configuration in Pre-Scalar of FLL
spi: dw: Make debugfs name unique between instances
ASoC: tlv320aic3x: Mark the RESET register as volatile
irqchip/keystone: Fix "scheduling while atomic" on rt
vfio-pci: use 32-bit comparisons for register address for gcc-4.5
drm/msm: Verify that MSM_SUBMIT_BO_FLAGS are set
drm/msm: Ensure that the hardware write pointer is valid
net/mlx4: Remove BUG_ON from ICM allocation routine
ipv6: Should use consistent conditional judgement for ip6 fragment between __ip6_append_data and ip6_finish_output
ARM: dts: n900: Mark eMMC slot with no-sdio and no-sd flags
r8169: add support for RTL8168 series add-on card.
x86/mce/AMD: Make the init code more robust
tpm: Replace device number bitmap with IDR
tpm: fix a kernel memory leak in tpm-sysfs.c
xen/blkback: don't use xen_blkif_get() in xen-blkback kthread
xen/blkback: don't free be structure too early
sched/cputime: Fix prev steal time accouting during CPU hotplug
net: skb_needs_check() accepts CHECKSUM_NONE for tx
pstore: Use dynamic spinlock initializer
pstore: Correctly initialize spinlock and flags
pstore: Allow prz to control need for locking
vlan: Propagate MAC address to VLANs
/proc/iomem: only expose physical resource addresses to privileged users
Make file credentials available to the seqfile interfaces
v4l: s5c73m3: fix negation operator
dentry name snapshots
ipmi/watchdog: fix watchdog timeout set on reboot
libnvdimm, btt: fix btt_rw_page not returning errors
RDMA/uverbs: Fix the check for port number
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
sched/cgroup: Move sched_online_group() back into css_online() to fix crash
kaweth: fix oops upon failed memory allocation
kaweth: fix firmware download
mpt3sas: Don't overreach ioc->reply_post[] during initialization
mailbox: handle empty message in tx_tick
mailbox: skip complete wait event if timer expired
mailbox: always wait in mbox_send_message for blocking Tx mode
wil6210: fix deadlock when using fw_no_recovery option
ath10k: fix null deref on wmi-tlv when trying spectral scan
isdn/i4l: fix buffer overflow
isdn: Fix a sleep-in-atomic bug
net: phy: Do not perform software reset for Generic PHY
nfc: fdp: fix NULL pointer dereference
xfs: don't BUG() on mixed direct and mapped I/O
perf intel-pt: Ensure never to set 'last_ip' when packet 'count' is zero
perf intel-pt: Use FUP always when scanning for an IP
perf intel-pt: Fix last_ip usage
perf intel-pt: Fix ip compression
drm: rcar-du: Simplify and fix probe error handling
drm: rcar-du: Perform initialization/cleanup at probe/remove time
drm/rcar: Nuke preclose hook
Staging: comedi: comedi_fops: Avoid orphaned proc entry
Revert "powerpc/numa: Fix percpu allocations to be NUMA aware"
KVM: PPC: Book3S HV: Save/restore host values of debug registers
KVM: PPC: Book3S HV: Reload HTM registers explicitly
KVM: PPC: Book3S HV: Restore critical SPRs to host values on guest exit
KVM: PPC: Book3S HV: Context-switch EBB registers properly
drm/nouveau/bar/gf100: fix access to upper half of BAR2
drm/vmwgfx: Fix gcc-7.1.1 warning
md/raid5: add thread_group worker async_tx_issue_pending_all
crypto: authencesn - Fix digest_null crash
powerpc/pseries: Fix of_node_put() underflow during reconfig remove
net: reduce skb_warn_bad_offload() noise
pstore: Make spinlock per zone instead of global
af_key: Add lock to key dump
ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
Linux 4.4.79
alarmtimer: don't rate limit one-shot timers
tracing: Fix kmemleak in instance_rmdir
spmi: Include OF based modalias in device uevent
of: device: Export of_device_{get_modalias, uvent_modalias} to modules
drm/mst: Avoid processing partially received up/down message transactions
drm/mst: Avoid dereferencing a NULL mstb in drm_dp_mst_handle_up_req()
drm/mst: Fix error handling during MST sideband message reception
RDMA/core: Initialize port_num in qp_attr
ceph: fix race in concurrent readdir
staging: rtl8188eu: add TL-WN722N v2 support
Revert "perf/core: Drop kernel samples even though :u is specified"
perf annotate: Fix broken arrow at row 0 connecting jmp instruction to its target
target: Fix COMPARE_AND_WRITE caw_sem leak during se_cmd quiesce
udf: Fix deadlock between writeback and udf_setsize()
NFS: only invalidate dentrys that are clearly invalid.
Input: i8042 - fix crash at boot time
MIPS: Fix a typo: s/preset/present/ in r2-to-r6 emulation error message
MIPS: Send SIGILL for linked branches in `__compute_return_epc_for_insn'
MIPS: Rename `sigill_r6' to `sigill_r2r6' in `__compute_return_epc_for_insn'
MIPS: Send SIGILL for BPOSGE32 in `__compute_return_epc_for_insn'
MIPS: math-emu: Prevent wrong ISA mode instruction emulation
MIPS: Fix unaligned PC interpretation in `compute_return_epc'
MIPS: Actually decode JALX in `__compute_return_epc_for_insn'
MIPS: Save static registers before sysmips
MIPS: Fix MIPS I ISA /proc/cpuinfo reporting
x86/ioapic: Pass the correct data to unmask_ioapic_irq()
x86/acpi: Prevent out of bound access caused by broken ACPI tables
MIPS: Negate error syscall return in trace
MIPS: Fix mips_atomic_set() with EVA
MIPS: Fix mips_atomic_set() retry condition
ftrace: Fix uninitialized variable in match_records()
vfio: New external user group/file match
vfio: Fix group release deadlock
f2fs: Don't clear SGID when inheriting ACLs
ipmi:ssif: Add missing unlock in error branch
ipmi: use rcu lock around call to intf->handlers->sender()
drm/radeon: Fix eDP for single-display iMac10,1 (v2)
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
drm/amd/amdgpu: Return error if initiating read out of range on vram
s390/syscalls: Fix out of bounds arguments access
Raid5 should update rdev->sectors after reshape
cx88: Fix regression in initial video standard setting
x86/xen: allow userspace access during hypercalls
md: don't use flush_signals in userspace processes
usb: renesas_usbhs: gadget: disable all eps when the driver stops
usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL
USB: cdc-acm: add device-id for quirky printer
usb: storage: return on error to avoid a null pointer dereference
xhci: Fix NULL pointer dereference when cleaning up streams for removed host
xhci: fix 20000ms port resume timeout
ipvs: SNAT packet replies only for NATed connections
PCI/PM: Restore the status of PCI devices across hibernation
af_key: Fix sadb_x_ipsecrequest parsing
powerpc/asm: Mark cr0 as clobbered in mftb()
powerpc: Fix emulation of mfocrf in emulate_step()
powerpc: Fix emulation of mcrf in emulate_step()
powerpc/64: Fix atomic64_inc_not_zero() to return an int
iscsi-target: Add login_keys_workaround attribute for non RFC initiators
scsi: ses: do not add a device to an enclosure if enclosure_add_links() fails.
PM / Domains: Fix unsafe iteration over modified list of domain providers
PM / Domains: Fix unsafe iteration over modified list of device links
ASoC: compress: Derive substream from stream based on direction
wlcore: fix 64K page support
Bluetooth: use constant time memory comparison for secret values
perf intel-pt: Clear FUP flag on error
perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP
perf intel-pt: Fix missing stack clear
perf intel-pt: Improve sample timestamp
perf intel-pt: Move decoder error setting into one condition
NFC: Add sockaddr length checks before accessing sa_family in bind handlers
nfc: Fix the sockaddr length sanitization in llcp_sock_connect
nfc: Ensure presence of required attributes in the activate_target handler
NFC: nfcmrvl: fix firmware-management initialisation
NFC: nfcmrvl: use nfc-device for firmware download
NFC: nfcmrvl: do not use device-managed resources
NFC: nfcmrvl_uart: add missing tty-device sanity check
NFC: fix broken device allocation
ath9k: fix tx99 bus error
ath9k: fix tx99 use after free
thermal: cpu_cooling: Avoid accessing potentially freed structures
s5p-jpeg: don't return a random width/height
ir-core: fix gcc-7 warning on bool arithmetic
disable new gcc-7.1.1 warnings for now
sched/fair: Add a backup_cpu to find_best_target
sched/fair: Try to estimate possible idle states.
sched/fair: Sync task util before EAS wakeup
Revert "sched/fair: ensure utilization signals are synchronized before use"
sched/fair: kick nohz idle balance for misfit task
sched/fair: Update signals of nohz cpus if we are going idle
events: add tracepoint for find_best_target
sched/fair: streamline find_best_target heuristics
UPSTREAM: af_key: Fix sadb_x_ipsecrequest parsing
ANDROID: lowmemorykiller: Add tgid to kill message
Revert "proc: smaps: Allow smaps access for CAP_SYS_RESOURCE"
Conflicts:
drivers/gpu/drm/msm/adreno/adreno_gpu.c
drivers/gpu/drm/msm/msm_ringbuffer.c
drivers/staging/android/lowmemorykiller.c
kernel/sched/fair.c
Change-Id: Ic3b3a522b79b1deb178e513b56b9c39eea48e079
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
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Changes in 4.4.80
af_key: Add lock to key dump
pstore: Make spinlock per zone instead of global
net: reduce skb_warn_bad_offload() noise
powerpc/pseries: Fix of_node_put() underflow during reconfig remove
crypto: authencesn - Fix digest_null crash
md/raid5: add thread_group worker async_tx_issue_pending_all
drm/vmwgfx: Fix gcc-7.1.1 warning
drm/nouveau/bar/gf100: fix access to upper half of BAR2
KVM: PPC: Book3S HV: Context-switch EBB registers properly
KVM: PPC: Book3S HV: Restore critical SPRs to host values on guest exit
KVM: PPC: Book3S HV: Reload HTM registers explicitly
KVM: PPC: Book3S HV: Save/restore host values of debug registers
Revert "powerpc/numa: Fix percpu allocations to be NUMA aware"
Staging: comedi: comedi_fops: Avoid orphaned proc entry
drm/rcar: Nuke preclose hook
drm: rcar-du: Perform initialization/cleanup at probe/remove time
drm: rcar-du: Simplify and fix probe error handling
perf intel-pt: Fix ip compression
perf intel-pt: Fix last_ip usage
perf intel-pt: Use FUP always when scanning for an IP
perf intel-pt: Ensure never to set 'last_ip' when packet 'count' is zero
xfs: don't BUG() on mixed direct and mapped I/O
nfc: fdp: fix NULL pointer dereference
net: phy: Do not perform software reset for Generic PHY
isdn: Fix a sleep-in-atomic bug
isdn/i4l: fix buffer overflow
ath10k: fix null deref on wmi-tlv when trying spectral scan
wil6210: fix deadlock when using fw_no_recovery option
mailbox: always wait in mbox_send_message for blocking Tx mode
mailbox: skip complete wait event if timer expired
mailbox: handle empty message in tx_tick
mpt3sas: Don't overreach ioc->reply_post[] during initialization
kaweth: fix firmware download
kaweth: fix oops upon failed memory allocation
sched/cgroup: Move sched_online_group() back into css_online() to fix crash
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
RDMA/uverbs: Fix the check for port number
libnvdimm, btt: fix btt_rw_page not returning errors
ipmi/watchdog: fix watchdog timeout set on reboot
dentry name snapshots
v4l: s5c73m3: fix negation operator
Make file credentials available to the seqfile interfaces
/proc/iomem: only expose physical resource addresses to privileged users
vlan: Propagate MAC address to VLANs
pstore: Allow prz to control need for locking
pstore: Correctly initialize spinlock and flags
pstore: Use dynamic spinlock initializer
net: skb_needs_check() accepts CHECKSUM_NONE for tx
sched/cputime: Fix prev steal time accouting during CPU hotplug
xen/blkback: don't free be structure too early
xen/blkback: don't use xen_blkif_get() in xen-blkback kthread
tpm: fix a kernel memory leak in tpm-sysfs.c
tpm: Replace device number bitmap with IDR
x86/mce/AMD: Make the init code more robust
r8169: add support for RTL8168 series add-on card.
ARM: dts: n900: Mark eMMC slot with no-sdio and no-sd flags
ipv6: Should use consistent conditional judgement for ip6 fragment between __ip6_append_data and ip6_finish_output
net/mlx4: Remove BUG_ON from ICM allocation routine
drm/msm: Ensure that the hardware write pointer is valid
drm/msm: Verify that MSM_SUBMIT_BO_FLAGS are set
vfio-pci: use 32-bit comparisons for register address for gcc-4.5
irqchip/keystone: Fix "scheduling while atomic" on rt
ASoC: tlv320aic3x: Mark the RESET register as volatile
spi: dw: Make debugfs name unique between instances
ASoC: nau8825: fix invalid configuration in Pre-Scalar of FLL
irqchip/mxs: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
openrisc: Add _text symbol to fix ksym build error
dmaengine: ioatdma: Add Skylake PCI Dev ID
dmaengine: ioatdma: workaround SKX ioatdma version
dmaengine: ti-dma-crossbar: Add some 'of_node_put()' in error path.
ARM64: zynqmp: Fix W=1 dtc 1.4 warnings
ARM64: zynqmp: Fix i2c node's compatible string
ARM: s3c2410_defconfig: Fix invalid values for NF_CT_PROTO_*
ACPI / scan: Prefer devices without _HID/_CID for _ADR matching
usb: gadget: Fix copy/pasted error message
Btrfs: adjust outstanding_extents counter properly when dio write is split
tools lib traceevent: Fix prev/next_prio for deadline tasks
xfrm: Don't use sk_family for socket policy lookups
perf tools: Install tools/lib/traceevent plugins with install-bin
perf symbols: Robustify reading of build-id from sysfs
video: fbdev: cobalt_lcdfb: Handle return NULL error from devm_ioremap
vfio-pci: Handle error from pci_iomap
arm64: mm: fix show_pte KERN_CONT fallout
nvmem: imx-ocotp: Fix wrong register size
sh_eth: enable RX descriptor word 0 shift on SH7734
ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion
HID: ignore Petzl USB headlamp
scsi: fnic: Avoid sending reset to firmware when another reset is in progress
scsi: snic: Return error code on memory allocation failure
ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused
Linux 4.4.80
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 6ef4fb387d50fa8f3bffdffc868b57e981cdd709 ]
Recent changes made KERN_CONT mandatory for continued lines. In the
absence of KERN_CONT, a newline may be implicit inserted by the core
printk code.
In show_pte, we (erroneously) use printk without KERN_CONT for continued
prints, resulting in output being split across a number of lines, and
not matching the intended output, e.g.
[ff000000000000] *pgd=00000009f511b003
, *pud=00000009f4a80003
, *pmd=0000000000000000
Fix this by using pr_cont() for all the continuations.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 3ef01c968fbfb21c2f16281445d30a865ee4412c ]
NF_CT_PROTO_DCCP/SCTP/UDPLITE were switched from tristate to boolean so
defconfig needs to be adjusted to silence warnings:
warning: symbol value 'm' invalid for NF_CT_PROTO_DCCP
warning: symbol value 'm' invalid for NF_CT_PROTO_SCTP
warning: symbol value 'm' invalid for NF_CT_PROTO_UDPLITE
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit c415f9e8304a1d235ef118d912f374ee2e46c45d ]
The Zynq Ultrascale MP uses version 1.4 of the Cadence IP core
which fixes some silicon bugs that needed software workarounds
in Version 1.0 that was used on Zynq systems.
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Cc: Rob Herring <robh+dt@kernel.org>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 4ea2a6be9565455f152c12f80222af1582ede0c7 ]
The patch removes these warnings reported by dtc 1.4:
Warning (unit_address_vs_reg): Node /amba_apu has a reg or ranges
property, but no unit name
Warning (unit_address_vs_reg): Node /memory has a reg or ranges
property, but no unit name
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 086cc1c31a0ec075dac02425367c871bb65bc2c9 ]
The build robot reports:
.tmp_kallsyms1.o: In function `kallsyms_relative_base':
>> (.rodata+0x8a18): undefined reference to `_text'
This is when using 'make alldefconfig'. Adding this _text symbol to mark
the start of the kernel as in other architecture fixes this.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Acked-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 4cf48f1d7520a4d325af58eded4d8090e1b40be7 ]
Trying to initialize eMMC slot as SDIO or SD cause failure in n900 port of
qemu. eMMC itself is not detected and is not working.
Real Nokia N900 harware does not have this problem. As eMMC is really not
SDIO or SD based such change is harmless and will fix support for qemu.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 0dad3a3014a0b9e72521ff44f17e0054f43dcdea ]
If mce_device_init() fails then the mce device pointer is NULL and the
AMD mce code happily dereferences it.
Add a sanity check.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 8c92870bdbf20b5fa5150a2c8bf53ab498516b24 which is
commit ba4a648f12f4cd0a8003dd229b6ca8a53348ee4b upstream.
Michal Hocko writes:
JFYI. We have encountered a regression after applying this patch on a
large ppc machine. While the patch is the right thing to do it doesn't
work well with the current vmalloc area size on ppc and large machines
where NUMA nodes are very far from each other. Just for the reference
the boot fails on such a machine with bunch of warning preceeding it.
See http://lkml.kernel.org/r/20170724134240.GL25221@dhcp22.suse.cz
It seems the right thing to do is to enlarge the vmalloc space on ppc
but this is not the case in the upstream kernel yet AFAIK. It is also
questionable whether that is a stable material but I will decision on
you here.
We have reverted this patch from our 4.4 based kernel.
Newer kernels do not have enlarged vmalloc space yet AFAIK so they won't
work properly eiter. This bug is quite rare though because you need a
specific HW configuration to trigger the issue - namely NUMA nodes have
to be far away from each other in the physical memory space.
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7ceaa6dcd8c6f59588428cec37f3c8093dd1011f upstream.
At present, HV KVM on POWER8 and POWER9 machines loses any instruction
or data breakpoint set in the host whenever a guest is run.
Instruction breakpoints are currently only used by xmon, but ptrace
and the perf_event subsystem can set data breakpoints as well as xmon.
To fix this, we save the host values of the debug registers (CIABR,
DAWR and DAWRX) before entering the guest and restore them on exit.
To provide space to save them in the stack frame, we expand the stack
frame allocated by kvmppc_hv_entry() from 112 to 144 bytes.
[paulus@ozlabs.org - Adjusted stack offsets since we aren't saving
POWER9-specific registers.]
Fixes: b005255e12a3 ("KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs", 2014-01-08)
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 46a704f8409f ("KVM: PPC: Book3S HV: Preserve userspace HTM
state properly", 2017-06-15) added code which assumes that the kernel
is able to handle a TM (transactional memory) unavailable interrupt
from userspace by reloading the TM-related registers and enabling TM
for the process. That ability was added in the 4.9 kernel; earlier
kernel versions simply panic on getting the TM unavailable interrupt.
Since commit 46a704f8409f has been backported to the 4.4 stable tree
as commit 824b9506e4f2, 4.4.75 and subsequent versions are vulnerable
to a userspace-triggerable panic.
This patch fixes the problem by explicitly reloading the TM-related
registers before returning to userspace, rather than disabling TM
for the process.
Commit 46a704f8409f also failed to enable TM for the kernel, leading
to a TM unavailable interrupt in the kernel, causing an oops. This
fixes that problem too, by enabling TM before accessing the TM
registers. That problem is fixed upstream by the patch "KVM: PPC:
Book3S HV: Enable TM before accessing TM registers".
Fixes: 824b9506e4f2 ("KVM: PPC: Book3S HV: Preserve userspace HTM state properly")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4c3bb4ccd074e1a0552078c0bf94c662367a1658 upstream.
This restores several special-purpose registers (SPRs) to sane values
on guest exit that were missed before.
TAR and VRSAVE are readable and writable by userspace, and we need to
save and restore them to prevent the guest from potentially affecting
userspace execution (not that TAR or VRSAVE are used by any known
program that run uses the KVM_RUN ioctl). We save/restore these
in kvmppc_vcpu_run_hv() rather than on every guest entry/exit.
FSCR affects userspace execution in that it can prohibit access to
certain facilities by userspace. We restore it to the normal value
for the task on exit from the KVM_RUN ioctl.
IAMR is normally 0, and is restored to 0 on guest exit. However,
with a radix host on POWER9, it is set to a value that prevents the
kernel from executing user-accessible memory. On POWER9, we save
IAMR on guest entry and restore it on guest exit to the saved value
rather than 0. On POWER8 we continue to set it to 0 on guest exit.
PSPB is normally 0. We restore it to 0 on guest exit to prevent
userspace taking advantage of the guest having set it non-zero
(which would allow userspace to set its SMT priority to high).
UAMOR is normally 0. We restore it to 0 on guest exit to prevent
the AMR from being used as a covert channel between userspace
processes, since the AMR is not context-switched at present.
[paulus@ozlabs.org - removed IAMR bits that are only needed on POWER9;
adjusted FSCR save/restore for lack of fscr field in thread_struct.]
Fixes: b005255e12a3 ("KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs", 2014-01-08)
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ca8efa1df1d15a1795a2da57f9f6aada6ed6b946 upstream.
This adds code to save the values of three SPRs (special-purpose
registers) used by userspace to control event-based branches (EBBs),
which are essentially interrupts that get delivered directly to
userspace. These registers are loaded up with guest values when
entering the guest, and their values are saved when exiting the
guest, but we were not saving the host values and restoring them
before going back to userspace.
On POWER8 this would only affect userspace programs which explicitly
request the use of EBBs and also use the KVM_RUN ioctl, since the
only source of EBBs on POWER8 is the PMU, and there is an explicit
enable bit in the PMU registers (and those PMU registers do get
properly context-switched between host and guest). On POWER9 there
is provision for externally-generated EBBs, and these are not subject
to the control in the PMU registers.
Since these registers only affect userspace, we can save them when
we first come in from userspace and restore them before returning to
userspace, rather than saving/restoring the host values on every
guest entry/exit. Similarly, we don't need to worry about their
values on offline secondary threads since they execute in the context
of the idle task, which never executes in userspace.
Fixes: b005255e12a3 ("KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs", 2014-01-08)
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4fd1bd443e80b12f0a01a45fb9a793206b41cb72 upstream.
As for commit 68baf692c435 ("powerpc/pseries: Fix of_node_put()
underflow during DLPAR remove"), the call to of_node_put() must be
removed from pSeries_reconfig_remove_node().
dlpar_detach_node() and pSeries_reconfig_remove_node() both call
of_detach_node(), and thus the node should not be released in both
cases.
Fixes: 0829f6d1f69e ("of: device_node kobject lifecycle fixes")
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.79
disable new gcc-7.1.1 warnings for now
ir-core: fix gcc-7 warning on bool arithmetic
s5p-jpeg: don't return a random width/height
thermal: cpu_cooling: Avoid accessing potentially freed structures
ath9k: fix tx99 use after free
ath9k: fix tx99 bus error
NFC: fix broken device allocation
NFC: nfcmrvl_uart: add missing tty-device sanity check
NFC: nfcmrvl: do not use device-managed resources
NFC: nfcmrvl: use nfc-device for firmware download
NFC: nfcmrvl: fix firmware-management initialisation
nfc: Ensure presence of required attributes in the activate_target handler
nfc: Fix the sockaddr length sanitization in llcp_sock_connect
NFC: Add sockaddr length checks before accessing sa_family in bind handlers
perf intel-pt: Move decoder error setting into one condition
perf intel-pt: Improve sample timestamp
perf intel-pt: Fix missing stack clear
perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP
perf intel-pt: Clear FUP flag on error
Bluetooth: use constant time memory comparison for secret values
wlcore: fix 64K page support
ASoC: compress: Derive substream from stream based on direction
PM / Domains: Fix unsafe iteration over modified list of device links
PM / Domains: Fix unsafe iteration over modified list of domain providers
scsi: ses: do not add a device to an enclosure if enclosure_add_links() fails.
iscsi-target: Add login_keys_workaround attribute for non RFC initiators
powerpc/64: Fix atomic64_inc_not_zero() to return an int
powerpc: Fix emulation of mcrf in emulate_step()
powerpc: Fix emulation of mfocrf in emulate_step()
powerpc/asm: Mark cr0 as clobbered in mftb()
af_key: Fix sadb_x_ipsecrequest parsing
PCI/PM: Restore the status of PCI devices across hibernation
ipvs: SNAT packet replies only for NATed connections
xhci: fix 20000ms port resume timeout
xhci: Fix NULL pointer dereference when cleaning up streams for removed host
usb: storage: return on error to avoid a null pointer dereference
USB: cdc-acm: add device-id for quirky printer
usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL
usb: renesas_usbhs: gadget: disable all eps when the driver stops
md: don't use flush_signals in userspace processes
x86/xen: allow userspace access during hypercalls
cx88: Fix regression in initial video standard setting
Raid5 should update rdev->sectors after reshape
s390/syscalls: Fix out of bounds arguments access
drm/amd/amdgpu: Return error if initiating read out of range on vram
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
drm/radeon: Fix eDP for single-display iMac10,1 (v2)
ipmi: use rcu lock around call to intf->handlers->sender()
ipmi:ssif: Add missing unlock in error branch
f2fs: Don't clear SGID when inheriting ACLs
vfio: Fix group release deadlock
vfio: New external user group/file match
ftrace: Fix uninitialized variable in match_records()
MIPS: Fix mips_atomic_set() retry condition
MIPS: Fix mips_atomic_set() with EVA
MIPS: Negate error syscall return in trace
x86/acpi: Prevent out of bound access caused by broken ACPI tables
x86/ioapic: Pass the correct data to unmask_ioapic_irq()
MIPS: Fix MIPS I ISA /proc/cpuinfo reporting
MIPS: Save static registers before sysmips
MIPS: Actually decode JALX in `__compute_return_epc_for_insn'
MIPS: Fix unaligned PC interpretation in `compute_return_epc'
MIPS: math-emu: Prevent wrong ISA mode instruction emulation
MIPS: Send SIGILL for BPOSGE32 in `__compute_return_epc_for_insn'
MIPS: Rename `sigill_r6' to `sigill_r2r6' in `__compute_return_epc_for_insn'
MIPS: Send SIGILL for linked branches in `__compute_return_epc_for_insn'
MIPS: Fix a typo: s/preset/present/ in r2-to-r6 emulation error message
Input: i8042 - fix crash at boot time
NFS: only invalidate dentrys that are clearly invalid.
udf: Fix deadlock between writeback and udf_setsize()
target: Fix COMPARE_AND_WRITE caw_sem leak during se_cmd quiesce
perf annotate: Fix broken arrow at row 0 connecting jmp instruction to its target
Revert "perf/core: Drop kernel samples even though :u is specified"
staging: rtl8188eu: add TL-WN722N v2 support
ceph: fix race in concurrent readdir
RDMA/core: Initialize port_num in qp_attr
drm/mst: Fix error handling during MST sideband message reception
drm/mst: Avoid dereferencing a NULL mstb in drm_dp_mst_handle_up_req()
drm/mst: Avoid processing partially received up/down message transactions
of: device: Export of_device_{get_modalias, uvent_modalias} to modules
spmi: Include OF based modalias in device uevent
tracing: Fix kmemleak in instance_rmdir
alarmtimer: don't rate limit one-shot timers
Linux 4.4.79
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 27fe2200dad2de8207a694024a7b9037dff1b280 upstream.
This is a user-visible message, so we want it to be spelled correctly.
Fixes: 5f9f41c474be ("MIPS: kernel: Prepare the JR instruction for emulation on MIPS R6")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16400/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fef40be6da856afead4177aaa9d869a66fb3381f upstream.
Fix commit 319824eabc3f ("MIPS: kernel: branch: Do not emulate the
branch likelies on MIPS R6") and also send SIGILL rather than returning
-SIGILL for BLTZAL, BLTZALL, BGEZAL and BGEZALL instruction encodings no
longer supported in R6, except where emulated. Returning -SIGILL is
never correct as the API defines this function's result upon error to be
-EFAULT and a signal actually issued.
Fixes: 319824eabc3f ("MIPS: kernel: branch: Do not emulate the branch likelies on MIPS R6")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16398/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1f4edde422961397cf4470b347958c13c6a740bb upstream.
Use the more accurate `sigill_r2r6' name for the label used in the case
of sending SIGILL in the absence of the instruction emulator for an
earlier ISA level instruction that has been removed as from the R6 ISA,
so that the `sigill_r6' name is freed for the situation where an R6
instruction is not supposed to be interpreted, because the executing
processor does not support the R6 ISA.
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16397/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7b82c1058ac1f8f8b9f2b8786b1f710a57a870a8 upstream.
Fix commit e50c0a8fa60d ("Support the MIPS32 / MIPS64 DSP ASE.") and
send SIGILL rather than SIGBUS whenever an unimplemented BPOSGE32 DSP
ASE instruction has been encountered in `__compute_return_epc_for_insn'
as our Reserved Instruction exception handler would in response to an
attempt to actually execute the instruction. Sending SIGBUS only makes
sense for the unaligned PC case, since moved to `__compute_return_epc'.
Adjust function documentation accordingly, correct formatting and use
`pr_info' rather than `printk' as the other exit path already does.
Fixes: e50c0a8fa60d ("Support the MIPS32 / MIPS64 DSP ASE.")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16396/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 13769ebad0c42738831787e27c7c7f982e7da579 upstream.
Terminate FPU emulation immediately whenever an ISA mode switch has been
observed. This is so that we do not interpret machine code in the wrong
mode, for example when a regular MIPS FPU instruction has been placed in
a delay slot of a jump that switches into the MIPS16 mode, as with the
following code (taken from a GCC test suite case):
00400650 <set_fast_math>:
400650: 3c020100 lui v0,0x100
400654: 03e00008 jr ra
400658: 44c2f800 ctc1 v0,c1_fcsr
40065c: 00000000 nop
[...]
004012d0 <__libc_csu_init>:
4012d0: f000 6a02 li v0,2
4012d4: f150 0b1c la v1,3f9430 <_DYNAMIC-0x6df0>
4012d8: f400 3240 sll v0,16
4012dc: e269 addu v0,v1
4012de: 659a move gp,v0
4012e0: f00c 64f6 save a0-a2,48,ra,s0-s1
4012e4: 673c move s1,gp
4012e6: f010 9978 lw v1,-32744(s1)
4012ea: d204 sw v0,16(sp)
4012ec: eb40 jalr v1
4012ee: 653b move t9,v1
4012f0: f010 997c lw v1,-32740(s1)
4012f4: f030 9920 lw s1,-32736(s1)
4012f8: e32f subu v1,s1
4012fa: 326b sra v0,v1,2
4012fc: d206 sw v0,24(sp)
4012fe: 220c beqz v0,401318 <__libc_csu_init+0x48>
401300: 6800 li s0,0
401302: 99e0 lw a3,0(s1)
401304: 4801 addiu s0,1
401306: 960e lw a2,56(sp)
401308: 4904 addiu s1,4
40130a: 950d lw a1,52(sp)
40130c: 940c lw a0,48(sp)
40130e: ef40 jalr a3
401310: 653f move t9,a3
401312: 9206 lw v0,24(sp)
401314: ea0a cmp v0,s0
401316: 61f5 btnez 401302 <__libc_csu_init+0x32>
401318: 6476 restore 48,ra,s0-s1
40131a: e8a0 jrc ra
Here `set_fast_math' is called from `40130e' (`40130f' with the ISA bit)
and emulation triggers for the CTC1 instruction. As it is in a jump
delay slot emulation continues from `401312' (`401313' with the ISA
bit). However we have no path to handle MIPS16 FPU code emulation,
because there are no MIPS16 FPU instructions. So the default emulation
path is taken, interpreting a 32-bit word fetched by `get_user' from
`401313' as a regular MIPS instruction, which is:
401313: f5ea0a92 sdc1 $f10,2706(t7)
This makes the FPU emulator proceed with the supposed SDC1 instruction
and consequently makes the program considered here terminate with
SIGSEGV.
A similar although less severe issue exists with pure-microMIPS
processors in the case where similarly an FPU instruction is emulated in
a delay slot of a register jump that (incorrectly) switches into the
regular MIPS mode. A subsequent instruction fetch from the jump's
target is supposed to cause an Address Error exception, however instead
we proceed with regular MIPS FPU emulation.
For simplicity then, always terminate the emulation loop whenever a mode
change is detected, denoted by an ISA mode bit flip. As from commit
377cb1b6c16a ("MIPS: Disable MIPS16/microMIPS crap for platforms not
supporting these ASEs.") the result of `get_isa16_mode' can be hardcoded
to 0, so we need to examine the ISA mode bit by hand.
This complements commit 102cedc32a6e ("MIPS: microMIPS: Floating point
support.") which added JALX decoding to FPU emulation.
Fixes: 102cedc32a6e ("MIPS: microMIPS: Floating point support.")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16393/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 11a3799dbeb620bf0400b1fda5cc2c6bea55f20a upstream.
Fix a regression introduced with commit fb6883e5809c ("MIPS: microMIPS:
Support handling of delay slots.") and defer to `__compute_return_epc'
if the ISA bit is set in EPC with non-MIPS16, non-microMIPS hardware,
which will then arrange for a SIGBUS due to an unaligned instruction
reference. Returning EPC here is never correct as the API defines this
function's result to be either a negative error code on failure or one
of 0 and BRANCH_LIKELY_TAKEN on success.
Fixes: fb6883e5809c ("MIPS: microMIPS: Support handling of delay slots.")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16395/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a9db101b735a9d49295326ae41f610f6da62b08c upstream.
Complement commit fb6883e5809c ("MIPS: microMIPS: Support handling of
delay slots.") and actually decode the regular MIPS JALX major
instruction opcode, the handling of which has been added with the said
commit for EPC calculation in `__compute_return_epc_for_insn'.
Fixes: fb6883e5809c ("MIPS: microMIPS: Support handling of delay slots.")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16394/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 49955d84cd9ccdca5a16a495e448e1a06fad9e49 upstream.
The MIPS sysmips system call handler may return directly from the
MIPS_ATOMIC_SET case (mips_atomic_set()) to syscall_exit. This path
restores the static (callee saved) registers, however they won't have
been saved on entry to the system call.
Use the save_static_function() macro to create a __sys_sysmips wrapper
function which saves the static registers before calling sys_sysmips, so
that the correct static register state is restored by syscall_exit.
Fixes: f1e39a4a616c ("MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16149/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e5f5a5b06e51a36f6ddf31a4a485358263953a3d upstream.
Correct a commit 515a6393dbac ("MIPS: kernel: proc: Add MIPS R6 support
to /proc/cpuinfo") regression that caused MIPS I systems to show no ISA
levels supported in /proc/cpuinfo, e.g.:
system type : Digital DECstation 2100/3100
machine : Unknown
processor : 0
cpu model : R3000 V2.0 FPU V2.0
BogoMIPS : 10.69
wait instruction : no
microsecond timers : no
tlb_entries : 64
extra interrupt vector : no
hardware watchpoint : no
isa :
ASEs implemented :
shadow register sets : 1
kscratch registers : 0
package : 0
core : 0
VCED exceptions : not available
VCEI exceptions : not available
and similarly exclude `mips1' from the ISA list for any processors below
MIPSr1. This is because the condition to show `mips1' on has been made
`cpu_has_mips_r1' rather than newly-introduced `cpu_has_mips_1'. Use
the correct condition then.
Fixes: 515a6393dbac ("MIPS: kernel: proc: Add MIPS R6 support to /proc/cpuinfo")
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16758/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e708e35ba6d89ff785b225cd07dcccab04fa954a upstream.
One of the rarely executed code pathes in check_timer() calls
unmask_ioapic_irq() passing irq_get_chip_data(0) as argument.
That's wrong as unmask_ioapic_irq() expects a pointer to the irq data of
interrupt 0. irq_get_chip_data(0) returns NULL, so the following
dereference in unmask_ioapic_irq() causes a kernel panic.
The issue went unnoticed in the first place because irq_get_chip_data()
returns a void pointer so the compiler cannot do a type check on the
argument. The code path was added for machines with broken configuration,
but it seems that those machines are either not running current kernels or
simply do not longer exist.
Hand in irq_get_irq_data(0) as argument which provides the correct data.
[ tglx: Rewrote changelog ]
Fixes: 4467715a44cc ("x86/irq: Move irq_cfg.irq_2_pin into io_apic.c")
Signed-off-by: Seunghun Han <kkamagui@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1500369644-45767-1-git-send-email-kkamagui@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit dad5ab0db8deac535d03e3fe3d8f2892173fa6a4 upstream.
The bus_irq argument of mp_override_legacy_irq() is used as the index into
the isa_irq_to_gsi[] array. The bus_irq argument originates from
ACPI_MADT_TYPE_IO_APIC and ACPI_MADT_TYPE_INTERRUPT items in the ACPI
tables, but is nowhere sanity checked.
That allows broken or malicious ACPI tables to overwrite memory, which
might cause malfunction, panic or arbitrary code execution.
Add a sanity check and emit a warning when that triggers.
[ tglx: Added warning and rewrote changelog ]
Signed-off-by: Seunghun Han <kkamagui@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: security@kernel.org
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4f32a39d49b25eaa66d2420f1f03d371ea4cd906 upstream.
The sys_exit trace event takes a single return value for the system
call, which MIPS passes the value of the $v0 (result) register, however
MIPS returns positive error codes in $v0 with $a3 specifying that $v0
contains an error code. As a result erroring system calls are traced
returning positive error numbers that can't always be distinguished from
success.
Use regs_return_value() to negate the error code if $a3 is set.
Fixes: 1d7bf993e073 ("MIPS: ftrace: Add support for syscall tracepoints.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16651/
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4915e1b043d6286928207b1f6968197b50407294 upstream.
EVA linked loads (LLE) and conditional stores (SCE) should be used on
EVA kernels for the MIPS_ATOMIC_SET operation of the sysmips system
call, or else the atomic set will apply to the kernel view of the
virtual address space (potentially unmapped on EVA kernels) rather than
the user view (TLB mapped).
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16151/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2ec420b26f7b6ff332393f0bb5a7d245f7ad87f0 upstream.
The inline asm retry check in the MIPS_ATOMIC_SET operation of the
sysmips system call has been backwards since commit f1e39a4a616c ("MIPS:
Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler")
merged in v2.6.32, resulting in the non R10000_LLSC_WAR case retrying
until the operation was inatomic, before returning the new value that
was probably just written multiple times instead of the old value.
Invert the branch condition to fix that particular issue.
Fixes: f1e39a4a616c ("MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16148/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c46fc0424ced3fb71208e72bd597d91b9169a781 upstream.
Zorro reported following crash while having enabled
syscall tracing (CONFIG_FTRACE_SYSCALLS):
Unable to handle kernel pointer dereference at virtual ...
Oops: 0011 [#1] SMP DEBUG_PAGEALLOC
SNIP
Call Trace:
([<000000000024d79c>] ftrace_syscall_enter+0xec/0x1d8)
[<00000000001099c6>] do_syscall_trace_enter+0x236/0x2f8
[<0000000000730f1c>] sysc_tracesys+0x1a/0x32
[<000003fffcf946a2>] 0x3fffcf946a2
INFO: lockdep is turned off.
Last Breaking-Event-Address:
[<000000000022dd44>] rb_event_data+0x34/0x40
---[ end trace 8c795f86b1b3f7b9 ]---
The crash happens in syscall_get_arguments function for
syscalls with zero arguments, that will try to access
first argument (args[0]) in event entry, but it's not
allocated.
Bail out of there are no arguments.
Reported-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c54590cac51db8ab5fd30156bdaba34af915e629 upstream.
Userspace application can do a hypercall through /dev/xen/privcmd, and
some for some hypercalls argument is a pointers to user-provided
structure. When SMAP is supported and enabled, hypervisor can't access.
So, lets allow it.
The same applies to HYPERVISOR_dm_op, where additionally privcmd driver
carefully verify buffer addresses.
Cc: stable@vger.kernel.org
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
[HYPERVISOR_dm_op dropped - not present until 4.11]
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2400fd822f467cb4c886c879d8ad99feac9cf319 upstream.
The workaround for the CELL timebase bug does not correctly mark cr0 as
being clobbered. This means GCC doesn't know that the asm block changes cr0 and
might leave the result of an unrelated comparison in cr0 across the block, which
we then trash, leading to basically random behaviour.
Fixes: 859deea949c3 ("[POWERPC] Cell timebase bug workaround")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
[mpe: Tweak change log and flag for stable]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 64e756c55aa46fc18fd53e8f3598b73b528d8637 upstream.
From POWER4 onwards, mfocrf() only places the specified CR field into
the destination GPR, and the rest of it is set to 0. The PowerPC AS
from version 3.0 now requires this behaviour.
The emulation code currently puts the entire CR into the destination GPR.
Fix it.
Fixes: 6888199f7fe5 ("[POWERPC] Emulate more instructions in software")
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 87c4b83e0fe234a1f0eed131ab6fa232036860d5 upstream.
The mcrf emulation code was using the CR field number directly as the shift
value, without taking into account that CR fields are numbered from 0-7 starting
at the high bits. That meant it was looking at the CR fields in the reverse
order.
Fixes: cf87c3f6b647 ("powerpc: Emulate icbi, mcrf and conditional-trap instructions")
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 01e6a61aceb82e13bec29502a8eb70d9574f97ad upstream.
Although it's not documented anywhere, there is an expectation that
atomic64_inc_not_zero() returns a result which fits in an int. This is
the behaviour implemented on all arches except powerpc.
This has caused at least one bug in practice, in the percpu-refcount
code, where the long result from our atomic64_inc_not_zero() was
truncated to an int leading to lost references and stuck systems. That
was worked around in that code in commit 966d2b04e070 ("percpu-refcount:
fix reference leak during percpu-atomic transition").
To the best of my grepping abilities there are no other callers
in-tree which truncate the value, but we should fix it anyway. Because
the breakage is subtle and potentially very harmful I'm also tagging
it for stable.
Code generation is largely unaffected because in most cases the
callers are just using the result for a test anyway. In particular the
case of fget() that was mentioned in commit a6cf7ed5119f
("powerpc/atomic: Implement atomic*_inc_not_zero") generates exactly
the same code.
Fixes: a6cf7ed5119f ("powerpc/atomic: Implement atomic*_inc_not_zero")
Noticed-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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