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Merge tag 'docs-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of fixes for reasonably obnoxious documentation issues"
* tag 'docs-fixes' of git://git.lwn.net/linux:
scripts: documentation-file-ref-check: Add line break before exit
scripts/kernel-doc: Add missing close-paren in c:function directives
docs: admin-guide: merge sections for the kernel.modprobe sysctl
docs: timekeeping: Use correct prototype for deprecated functions
Pull proc fix from Eric Biederman:
"While running syzbot happened to spot one more oversight in my rework
of proc_flush_task.
The fields proc_self and proc_thread_self were not being reinitialized
when proc was unmounted, which could cause problems if the mount of
proc fails"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
proc: Handle umounts cleanly
- Fix warnings from enabling more dtc warnings which landed in the merge
window and didn't get fixed in time.
- Fix some document references from DT schema conversions
- Fix kmemleak errors in DT unittests
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Merge tag 'devicetree-fixes-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix warnings from enabling more dtc warnings which landed in the
merge window and didn't get fixed in time.
- Fix some document references from DT schema conversions
- Fix kmemleak errors in DT unittests
* tag 'devicetree-fixes-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (23 commits)
kbuild: check libyaml installation for 'make dt_binding_check'
of: unittest: kmemleak in duplicate property update
of: overlay: kmemleak in dup_and_fixup_symbol_prop()
of: unittest: kmemleak in of_unittest_overlay_high_level()
of: unittest: kmemleak in of_unittest_platform_populate()
of: unittest: kmemleak on changeset destroy
MAINTAINERS: dt: fix pointers for ARM Integrator, Versatile and RealView
MAINTAINERS: dt: update display/allwinner file entry
dt-bindings: iio: dac: AD5570R fix bindings errors
dt-bindings: Fix misspellings of "Analog Devices"
dt-bindings: pwm: Fix cros-ec-pwm example dtc 'reg' warning
docs: dt: rockchip,dwc3.txt: fix a pointer to a renamed file
docs: dt: fix a broken reference for a file converted to json
docs: dt: qcom,dwc3.txt: fix cross-reference for a converted file
docs: dt: fix broken reference to phy-cadence-torrent.yaml
dt-bindings: interrupt-controller: Fix loongson,parent_int_map property schema
dt-bindings: hwmon: Fix incorrect $id paths
dt-bindings: Fix dtc warnings on reg and ranges in examples
dt-bindings: BD718x7 - add missing I2C bus properties
dt-bindings: clock: syscon-icst: Remove unneeded unit name
...
- Delete the space separator in the __emit_inst macro as it breaks the
clang integrated assembler.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Remove vdso code trying to free unallocated pages.
- Delete the space separator in the __emit_inst macro as it breaks the
clang integrated assembler.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Delete the space separator in __emit_inst
arm64: vdso: don't free unallocated pages
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Merge tag 'for-linus-5.7-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen update from Juergen Gross:
- a small cleanup patch
- a security fix for a bug in the Xen hypervisor to avoid enabling Xen
guests to crash dom0 on an unfixed hypervisor.
* tag 'for-linus-5.7-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
arm/xen: make _xen_start_info static
xen/xenbus: ensure xenbus_map_ring_valloc() returns proper grant status
Resctrl assumes that all CPUs are online when the filesystem is mounted,
and that CPUs remember their CDP-enabled state over CPU hotplug.
This goes wrong when resctrl's CDP-enabled state changes while all the
CPUs in a domain are offline.
When a domain comes online, enable (or disable!) CDP to match resctrl's
current setting.
Fixes: 5ff193fbde ("x86/intel_rdt: Add basic resctrl filesystem support")
Suggested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200221162105.154163-1-james.morse@arm.com
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Merge tag 'io_uring-5.7-2020-04-17' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- wrap up the init/setup cleanup (Pavel)
- fix some issues around deferral sequences (Pavel)
- fix splice punt check using the wrong struct file member
- apply poll re-arm logic for pollable retry too
- pollable retry should honor cancelation
- fix setup time error handling syzbot reported crash
- restore work state when poll is canceled
* tag 'io_uring-5.7-2020-04-17' of git://git.kernel.dk/linux-block:
io_uring: don't count rqs failed after current one
io_uring: kill already cached timeout.seq_offset
io_uring: fix cached_sq_head in io_timeout()
io_uring: only post events in io_poll_remove_all() if we completed some
io_uring: io_async_task_func() should check and honor cancelation
io_uring: check for need to re-wait in polled async handling
io_uring: correct O_NONBLOCK check for splice punt
io_uring: restore req->work when canceling poll request
io_uring: move all request init code in one place
io_uring: keep all sqe->flags in req->flags
io_uring: early submission req fail code
io_uring: track mm through current->mm
io_uring: remove obsolete @mm_fault
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Merge tag 'block-5.7-2020-04-17' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Fix for a driver tag leak in error handling (John)
- Remove now defunct Kconfig selection from dasd (Stefan)
- blk-wbt trace fiexs (Tommi)
* tag 'block-5.7-2020-04-17' of git://git.kernel.dk/linux-block:
blk-wbt: Drop needless newlines from tracepoint format strings
blk-wbt: Use tracepoint_string() for wbt_step tracepoint string literals
s390/dasd: remove IOSCHED_DEADLINE from DASD Kconfig
blk-mq: Put driver tag in blk_mq_dispatch_rq_list() when no budget
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Merge tag 'libata-5.7-2020-04-17' of git://git.kernel.dk/linux-block
Pull libata fixlet from Jens Axboe:
"Add yet another Comet Lake PCI ID for ahci"
* tag 'libata-5.7-2020-04-17' of git://git.kernel.dk/linux-block:
ahci: Add Intel Comet Lake PCH-U PCI ID
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Merge tag 'for-5.7-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"A regression fix for a warning caused by running balance and snapshot
creation in parallel"
* tag 'for-5.7-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix setting last_trans for reloc roots
Allow the operating performance points (OPP) core to be used in
the case when the same driver is used on different platforms,
some of which have an OPP table and some of which have a clock
node (Rajendra Nayak).
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Merge tag 'pm-5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management update from Rafael Wysocki:
"Allow the operating performance points (OPP) core to be used in the
case when the same driver is used on different platforms, some of
which have an OPP table and some of which have a clock node (Rajendra
Nayak)"
* tag 'pm-5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
opp: Manage empty OPP tables with clk handle
One significant regression fix is for HD-audio buffer preallocation.
In 5.6 it was set to non-prompt for x86 and forced to 0, but this
turned out to be problematic for some applications, hence it gets
reverted. Distros would need to restore CONFIG_SND_HDA_PREALLOC_SIZE
value to the earlier values they've used in the past.
Other than that, we've received quite a few small fixes for HD-audio
and USB-audio. Most of them are for dealing with the broken TRX40
mobos and the runtime PM without HD-audio codecs.
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Merge tag 'sound-5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"One significant regression fix is for HD-audio buffer preallocation.
In 5.6 it was set to non-prompt for x86 and forced to 0, but this
turned out to be problematic for some applications, hence it gets
reverted. Distros would need to restore CONFIG_SND_HDA_PREALLOC_SIZE
value to the earlier values they've used in the past.
Other than that, we've received quite a few small fixes for HD-audio
and USB-audio. Most of them are for dealing with the broken TRX40
mobos and the runtime PM without HD-audio codecs"
* tag 'sound-5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda: call runtime_allow() for all hda controllers
ALSA: hda: Allow setting preallocation again for x86
ALSA: hda: Explicitly permit using autosuspend if runtime PM is supported
ALSA: hda: Skip controller resume if not needed
ALSA: hda: Keep the controller initialization even if no codecs found
ALSA: hda: Release resources at error in delayed probe
ALSA: hda: Honor PM disablement in PM freeze and thaw_noirq ops
ALSA: hda: Don't release card at firmware loading error
ALSA: usb-audio: Check mapping at creating connector controls, too
ALSA: usb-audio: Don't create jack controls for PCM terminals
ALSA: usb-audio: Don't override ignore_ctl_error value from the map
ALSA: usb-audio: Filter error from connector kctl ops, too
ALSA: hda/realtek - Enable the headset mic on Asus FX505DT
ALSA: ctxfi: Remove unnecessary cast in kfree
If you run 'make dtbs_check' without installing the libyaml package,
the error message "dtc needs libyaml ..." is shown.
This should be checked also for 'make dt_binding_check' because dtc
needs to validate *.example.dts extracted from *.yaml files.
It is missing since commit 4f0e3a57d6 ("kbuild: Add support for DT
binding schema checks"), but this fix-up is applicable only after commit
e10c4321dc ("kbuild: allow to run dt_binding_check and dtbs_check
in a single command").
I gave the Fixes tag to the latter in case somebody is interested in
back-porting this.
Fixes: e10c4321dc ("kbuild: allow to run dt_binding_check and dtbs_check in a single command")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
The default resource group ("rdtgroup_default") is associated with the
root of the resctrl filesystem and should never be removed. New resource
groups can be created as subdirectories of the resctrl filesystem and
they can be removed from user space.
There exists a safeguard in the directory removal code
(rdtgroup_rmdir()) that ensures that only subdirectories can be removed
by testing that the directory to be removed has to be a child of the
root directory.
A possible deadlock was recently fixed with
334b0f4e9b ("x86/resctrl: Fix a deadlock due to inaccurate reference").
This fix involved associating the private data of the "mon_groups"
and "mon_data" directories to the resource group to which they belong
instead of NULL as before. A consequence of this change was that
the original safeguard code preventing removal of "mon_groups" and
"mon_data" found in the root directory failed resulting in attempts to
remove the default resource group that ends in a BUG:
kernel BUG at mm/slub.c:3969!
invalid opcode: 0000 [#1] SMP PTI
Call Trace:
rdtgroup_rmdir+0x16b/0x2c0
kernfs_iop_rmdir+0x5c/0x90
vfs_rmdir+0x7a/0x160
do_rmdir+0x17d/0x1e0
do_syscall_64+0x55/0x1d0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fix this by improving the directory removal safeguard to ensure that
subdirectories of the resctrl root directory can only be removed if they
are a child of the resctrl filesystem's root _and_ not associated with
the default resource group.
Fixes: 334b0f4e9b ("x86/resctrl: Fix a deadlock due to inaccurate reference")
Reported-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/884cbe1773496b5dbec1b6bd11bb50cffa83603d.1584461853.git.reinette.chatre@intel.com
Drop needless newlines from tracepoint format strings, they only add
empty lines to perf tracing output.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Use tracepoint_string() for string literals that are used in the
wbt_step tracepoint, so that userspace tools can display the string
content.
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
CONFIG_IOSCHED_DEADLINE was removed with
commit f382fb0bce ("block: remove legacy IO schedulers")
and setting of the scheduler was removed with
commit a5fd8ddce2 ("s390/dasd: remove setting of scheduler from driver").
So get rid of the select.
Reported-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 5 of 5.
When overlay 'overlay_bad_add_dup_prop' is applied, the apply code
properly detects that a memory leak will occur if the overlay is removed
since the duplicate property is located in a base devicetree node and
reports via printk():
OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail
OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/motor-1/rpm_avail
The overlay is removed when the apply code detects multiple changesets
modifying the same property. This is reported via printk():
OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/rpm_avail
As a result of this error, the overlay is removed resulting in the
expected memory leak.
Add another device node level to the overlay so that the duplicate
property is located in a node added by the overlay, thus no memory
leak will occur when the overlay is removed.
Thus users of kmemleak will not have to debug this leak in the future.
Fixes: 2fe0e8769d ("of: overlay: check prevents multiple fragments touching same property")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 4 of 5.
target_path was not freed in the non-error path.
Fixes: e0a58f3e08 ("of: overlay: remove a dependency on device node full_name")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 3 of 5.
of_unittest_overlay_high_level() failed to kfree the newly created
property when the property named 'name' is skipped.
Fixes: 39a751a4cb ("of: change overlay apply input data from unflattened to FDT")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 2 of 5.
of_unittest_platform_populate() left an elevated reference count for
grandchild nodes (which are platform devices). Fix the platform
device reference counts so that the memory will be freed.
Fixes: fb2caa50fb ("of/selftest: add testcase for nodes with same name and address")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 1 of 5.
of_unittest_changeset() reaches deeply into the dynamic devicetree
functions. Several nodes were left with an elevated reference
count and thus were not properly cleaned up. Fix the reference
counts so that the memory will be freed.
Fixes: 201c910bd6 ("of: Transactional DT support.")
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
There's a conversion from a plain text binding file into 4 yaml ones.
The old file got removed, causing this new warning:
Warning: MAINTAINERS references a file that doesn't exist: Documentation/devicetree/bindings/arm/arm-boards
Address it by replacing the old reference by the new ones
Fixes: 4b900070d5 ("dt-bindings: arm: Add Versatile YAML schema")
Fixes: 2d483550b6 ("dt-bindings: arm: Drop the non-YAML bindings")
Fixes: 7db625b9fa ("dt-bindings: arm: Add RealView YAML schema")
Fixes: 4fb00d9066 ("dt-bindings: arm: Add Versatile Express and Juno YAML schema")
Fixes: 33fbfb3eaf ("dt-bindings: arm: Add Integrator YAML schema")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Changeset f5a98bfe7b ("dt-bindings: display: Convert Allwinner display pipeline to schemas")
split Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
into several files. Yet, it kept the old place at MAINTAINERS.
Update it to point to the new place.
Fixes: f5a98bfe7b ("dt-bindings: display: Convert Allwinner display pipeline to schemas")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
I made a mistake with my previous fix, I assumed that we didn't need to
mess with the reloc roots once we were out of the part of relocation where
we are actually moving the extents.
The subtle thing that I missed is that btrfs_init_reloc_root() also
updates the last_trans for the reloc root when we do
btrfs_record_root_in_trans() for the corresponding fs_root. I've added a
comment to make sure future me doesn't make this mistake again.
This showed up as a WARN_ON() in btrfs_copy_root() because our
last_trans didn't == the current transid. This could happen if we
snapshotted a fs root with a reloc root after we set
rc->create_reloc_tree = 0, but before we actually merge the reloc root.
Worth mentioning that the regression produced the following warning
when running snapshot creation and balance in parallel:
BTRFS info (device sdc): relocating block group 30408704 flags metadata|dup
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12823 at fs/btrfs/ctree.c:191 btrfs_copy_root+0x26f/0x430 [btrfs]
CPU: 0 PID: 12823 Comm: btrfs Tainted: G W 5.6.0-rc7-btrfs-next-58 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:btrfs_copy_root+0x26f/0x430 [btrfs]
RSP: 0018:ffffb96e044279b8 EFLAGS: 00010202
RAX: 0000000000000009 RBX: ffff9da70bf61000 RCX: ffffb96e04427a48
RDX: ffff9da733a770c8 RSI: ffff9da70bf61000 RDI: ffff9da694163818
RBP: ffff9da733a770c8 R08: fffffffffffffff8 R09: 0000000000000002
R10: ffffb96e044279a0 R11: 0000000000000000 R12: ffff9da694163818
R13: fffffffffffffff8 R14: ffff9da6d2512000 R15: ffff9da714cdac00
FS: 00007fdeacf328c0(0000) GS:ffff9da735e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a2a5b8a118 CR3: 00000001eed78002 CR4: 00000000003606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
? create_reloc_root+0x49/0x2b0 [btrfs]
? kmem_cache_alloc_trace+0xe5/0x200
create_reloc_root+0x8b/0x2b0 [btrfs]
btrfs_reloc_post_snapshot+0x96/0x5b0 [btrfs]
create_pending_snapshot+0x610/0x1010 [btrfs]
create_pending_snapshots+0xa8/0xd0 [btrfs]
btrfs_commit_transaction+0x4c7/0xc50 [btrfs]
? btrfs_mksubvol+0x3cd/0x560 [btrfs]
btrfs_mksubvol+0x455/0x560 [btrfs]
__btrfs_ioctl_snap_create+0x15f/0x190 [btrfs]
btrfs_ioctl_snap_create_v2+0xa4/0xf0 [btrfs]
? mem_cgroup_commit_charge+0x6e/0x540
btrfs_ioctl+0x12d8/0x3760 [btrfs]
? do_raw_spin_unlock+0x49/0xc0
? _raw_spin_unlock+0x29/0x40
? __handle_mm_fault+0x11b3/0x14b0
? ksys_ioctl+0x92/0xb0
ksys_ioctl+0x92/0xb0
? trace_hardirqs_off_thunk+0x1a/0x1c
__x64_sys_ioctl+0x16/0x20
do_syscall_64+0x5c/0x280
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fdeabd3bdd7
Fixes: 2abc726ab4 ("btrfs: do not init a reloc root if we aren't relocating")
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The SPLIT_LOCK_CPU() macro escaped the tree-wide sweep for old-style
initialization. Update to use X86_MATCH_INTEL_FAM6_MODEL().
Fixes: 6650cdd9a8 ("x86/split_lock: Enable split lock detection by kernel")
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200416205754.21177-2-tony.luck@intel.com
- Fix the mbigen driver to properly free its MSI descriptors on teardown
- Fix the TI INTA driver to avoid handling spurious interrupts from masked interrupts
- Fix the SiFive PLIC driver to use the correct interrupt priority mask
- Fix the Amlogic Meson gpio driver creative locking
- Fix the GICv4.1 virtual SGI set_affinity callback to update the effective affinity
- Allow the GICv4.x driver to synchronize with the HW pending table parsing
- Fix a couple of missing static attributes
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Merge tag 'irqchip-fixes-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Fix the mbigen driver to properly free its MSI descriptors on teardown
- Fix the TI INTA driver to avoid handling spurious interrupts from masked interrupts
- Fix the SiFive PLIC driver to use the correct interrupt priority mask
- Fix the Amlogic Meson gpio driver creative locking
- Fix the GICv4.1 virtual SGI set_affinity callback to update the effective affinity
- Allow the GICv4.x driver to synchronize with the HW pending table parsing
- Fix a couple of missing static attributes
Fix the following sparse warning:
drivers/irqchip/irq-bcm7038-l1.c:419:12: warning: symbol
'bcm7038_l1_of_init' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200417074036.46594-1-yanaijie@huawei.com
Fix the following sparse warning:
drivers/irqchip/irq-mvebu-icu.c:69:1: warning: symbol 'legacy_bindings'
was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200417074046.46771-1-yanaijie@huawei.com
Running a lockedp-enabled kernel on a vim3l board (Amlogic SM1)
leads to the following splat:
[ 13.557138] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
[ 13.587485] ip/456 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[ 13.625922] ffff000059908cf0 (&irq_desc_lock_class){-.-.}-{2:2}, at: __setup_irq+0xf8/0x8d8
[ 13.632273] which would create a new lock dependency:
[ 13.637272] (&irq_desc_lock_class){-.-.}-{2:2} -> (&ctl->lock){+.+.}-{2:2}
[ 13.644209]
[ 13.644209] but this new dependency connects a HARDIRQ-irq-safe lock:
[ 13.654122] (&irq_desc_lock_class){-.-.}-{2:2}
[ 13.654125]
[ 13.654125] ... which became HARDIRQ-irq-safe at:
[ 13.664759] lock_acquire+0xec/0x368
[ 13.666926] _raw_spin_lock+0x60/0x88
[ 13.669979] handle_fasteoi_irq+0x30/0x178
[ 13.674082] generic_handle_irq+0x38/0x50
[ 13.678098] __handle_domain_irq+0x6c/0xc8
[ 13.682209] gic_handle_irq+0x5c/0xb0
[ 13.685872] el1_irq+0xd0/0x180
[ 13.689010] arch_cpu_idle+0x40/0x220
[ 13.692732] default_idle_call+0x54/0x60
[ 13.696677] do_idle+0x23c/0x2e8
[ 13.699903] cpu_startup_entry+0x30/0x50
[ 13.703852] rest_init+0x1e0/0x2b4
[ 13.707301] arch_call_rest_init+0x18/0x24
[ 13.711449] start_kernel+0x4ec/0x51c
[ 13.715167]
[ 13.715167] to a HARDIRQ-irq-unsafe lock:
[ 13.722426] (&ctl->lock){+.+.}-{2:2}
[ 13.722430]
[ 13.722430] ... which became HARDIRQ-irq-unsafe at:
[ 13.732319] ...
[ 13.732324] lock_acquire+0xec/0x368
[ 13.735985] _raw_spin_lock+0x60/0x88
[ 13.739452] meson_gpio_irq_domain_alloc+0xcc/0x290
[ 13.744392] irq_domain_alloc_irqs_hierarchy+0x24/0x60
[ 13.749586] __irq_domain_alloc_irqs+0x160/0x2f0
[ 13.754254] irq_create_fwspec_mapping+0x118/0x320
[ 13.759073] irq_create_of_mapping+0x78/0xa0
[ 13.763360] of_irq_get+0x6c/0x80
[ 13.766701] of_mdiobus_register_phy+0x10c/0x238 [of_mdio]
[ 13.772227] of_mdiobus_register+0x158/0x380 [of_mdio]
[ 13.777388] mdio_mux_init+0x180/0x2e8 [mdio_mux]
[ 13.782128] g12a_mdio_mux_probe+0x290/0x398 [mdio_mux_meson_g12a]
[ 13.788349] platform_drv_probe+0x5c/0xb0
[ 13.792379] really_probe+0xe4/0x448
[ 13.795979] driver_probe_device+0xe8/0x140
[ 13.800189] __device_attach_driver+0x94/0x120
[ 13.804639] bus_for_each_drv+0x84/0xd8
[ 13.808474] __device_attach+0xe4/0x168
[ 13.812361] device_initial_probe+0x1c/0x28
[ 13.816592] bus_probe_device+0xa4/0xb0
[ 13.820430] deferred_probe_work_func+0xa8/0x100
[ 13.825064] process_one_work+0x264/0x688
[ 13.829088] worker_thread+0x4c/0x458
[ 13.832768] kthread+0x154/0x158
[ 13.836018] ret_from_fork+0x10/0x18
[ 13.839612]
[ 13.839612] other info that might help us debug this:
[ 13.839612]
[ 13.850354] Possible interrupt unsafe locking scenario:
[ 13.850354]
[ 13.855720] CPU0 CPU1
[ 13.858774] ---- ----
[ 13.863242] lock(&ctl->lock);
[ 13.866330] local_irq_disable();
[ 13.872233] lock(&irq_desc_lock_class);
[ 13.878705] lock(&ctl->lock);
[ 13.884297] <Interrupt>
[ 13.886857] lock(&irq_desc_lock_class);
[ 13.891014]
[ 13.891014] *** DEADLOCK ***
The issue can occur when CPU1 is doing something like irq_set_type()
and CPU0 performing an interrupt allocation, for example. Taking
an interrupt (like the one being reconfigured) would lead to a deadlock.
A solution to this is:
- Reorder the locking so that meson_gpio_irq_update_bits takes the lock
itself at all times, instead of relying on the caller to lock or not,
hence making the RMW sequence atomic,
- Rework the critical section in meson_gpio_irq_request_channel to only
cover the allocation itself, and let the gpio_irq_sel_pin callback
deal with its own locking if required,
- Take the private spin-lock with interrupts disabled at all times
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
As per the PLIC specification, maximum priority threshold value is 0x7
not 0xF. Even though it doesn't cause any error in qemu/hifive unleashed,
there may be some implementation which checks the upper bound resulting in
an illegal access.
Fixes: ccbe80bad5 ("irqchip/sifive-plic: Enable/Disable external interrupts upon cpu online/offline")
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200403014609.71831-1-atish.patra@wdc.com
The ti_sci_inta_irq_handler() does not take into account INTA IRQs state
(masked/unmasked) as it uses INTA_STATUS_CLEAR_j register to get INTA IRQs
status, which provides raw status value.
This causes hard IRQ handlers to be called or threaded handlers to be
scheduled many times even if corresponding INTA IRQ is masked.
Above, first of all, affects the LEVEL interrupts processing and causes
unexpected behavior up the system stack or crash.
Fix it by using the Interrupt Masked Status INTA_STATUSM_j register which
provides masked INTA IRQs status.
Fixes: 9f1463b86c ("irqchip/ti-sci-inta: Add support for Interrupt Aggregator driver")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20200408191532.31252-1-grygorii.strashko@ti.com
Cc: stable@vger.kernel.org
Using irq_domain_free_irqs_common() on the irqdomain free path will
leave the MSI descriptor unfreed when platform devices get removed.
Properly free it by MSI domain free function.
Fixes: 9650c60ebf ("irqchip/mbigen: Create irq domain for each mbigen device")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200408114352.1604-1-yuzenghui@huawei.com
Fix the following sparse warning:
arch/arm64/xen/../../arm/xen/enlighten.c:39:19: warning: symbol
'_xen_start_info' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20200415084853.5808-1-yanaijie@huawei.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Two small fixes for cros_ec_sensorhub_ring.c, addressing issues
introduced in the cros_ec_sensorhub FIFO support commit.
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Merge tag 'tag-chrome-platform-fixes-for-v5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome-platform fixes from Benson Leung:
"Two small fixes for cros_ec_sensorhub_ring.c, addressing issues
introduced in the cros_ec_sensorhub FIFO support commit"
* tag 'tag-chrome-platform-fixes-for-v5.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_ec_sensorhub: Add missing '\n' in log messages
platform/chrome: cros_ec_sensorhub: Off by one in cros_sensorhub_send_sample()
Pull networking fixes from David Miller:
1) Disable RISCV BPF JIT builds when !MMU, from Björn Töpel.
2) nf_tables leaves dangling pointer after free, fix from Eric Dumazet.
3) Out of boundary write in __xsk_rcv_memcpy(), fix from Li RongQing.
4) Adjust icmp6 message source address selection when routes have a
preferred source address set, from Tim Stallard.
5) Be sure to validate HSR protocol version when creating new links,
from Taehee Yoo.
6) CAP_NET_ADMIN should be sufficient to manage l2tp tunnels even in
non-initial namespaces, from Michael Weiß.
7) Missing release firmware call in mlx5, from Eran Ben Elisha.
8) Fix variable type in macsec_changelink(), caught by KASAN. Fix from
Taehee Yoo.
9) Fix pause frame negotiation in marvell phy driver, from Clemens
Gruber.
10) Record RX queue early enough in tun packet paths such that XDP
programs will see the correct RX queue index, from Gilberto Bertin.
11) Fix double unlock in mptcp, from Florian Westphal.
12) Fix offset overflow in ARM bpf JIT, from Luke Nelson.
13) marvell10g needs to soft reset PHY when coming out of low power
mode, from Russell King.
14) Fix MTU setting regression in stmmac for some chip types, from
Florian Fainelli.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (101 commits)
amd-xgbe: Use __napi_schedule() in BH context
mISDN: make dmril and dmrim static
net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes
net: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode
tipc: fix incorrect increasing of link window
Documentation: Fix tcp_challenge_ack_limit default value
net: tulip: make early_486_chipsets static
dt-bindings: net: ethernet-phy: add desciption for ethernet-phy-id1234.d400
ipv6: remove redundant assignment to variable err
net/rds: Use ERR_PTR for rds_message_alloc_sgs()
net: mscc: ocelot: fix untagged packet drops when enslaving to vlan aware bridge
selftests/bpf: Check for correct program attach/detach in xdp_attach test
libbpf: Fix type of old_fd in bpf_xdp_set_link_opts
libbpf: Always specify expected_attach_type on program load if supported
xsk: Add missing check on user supplied headroom size
mac80211: fix channel switch trigger from unknown mesh peer
mac80211: fix race in ieee80211_register_hw()
net: marvell10g: soft-reset the PHY when coming out of low power
net: marvell10g: report firmware version
net/cxgb4: Check the return from t4_query_params properly
...
The driver uses __napi_schedule_irqoff() which is fine as long as it is
invoked with disabled interrupts by everybody. Since the commit
mentioned below the driver may invoke xgbe_isr_task() in tasklet/softirq
context. This may lead to list corruption if another driver uses
__napi_schedule_irqoff() in IRQ context.
Use __napi_schedule() which safe to use from IRQ and softirq context.
Fixes: 85b85c8534 ("amd-xgbe: Re-issue interrupt if interrupt status not cleared")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the following sparse warning:
drivers/isdn/hardware/mISDN/mISDNisar.c:746:12: warning: symbol 'dmril'
was not declared. Should it be static?
drivers/isdn/hardware/mISDN/mISDNisar.c:749:12: warning: symbol 'dmrim'
was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After commit bfcb813203 ("net: dsa:
configure the MTU for switch ports") my Lamobo R1 platform which uses
an allwinner,sun7i-a20-gmac compatible Ethernet MAC started to fail
by rejecting a MTU of 1536. The reason for that is that the DMA
capabilities are not readable on this version of the IP, and there
is also no 'tx-fifo-depth' property being provided in Device Tree. The
property is documented as optional, and is not provided.
Chen-Yu indicated that the FIFO sizes are 4KB for TX and 16KB for RX, so
provide these values through platform data as an immediate fix until
various Device Tree sources get updated accordingly.
Fixes: eaf4fac478 ("net: stmmac: Do not accept invalid MTU values")
Suggested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In VLAN-unaware mode, the Egress Tag (EG_TAG) field in Port VLAN
Control register must be set to Consistent to let tagged frames pass
through as is, otherwise their tags will be stripped.
Fixes: 83163f7dca ("net: dsa: mediatek: add VLAN support for MT7530")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to https://www.analog.com/, the company name is spelled
"Analog Devices".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
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Merge tag 'selinux-pr-20200416' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fix from Paul Moore:
"One small SELinux fix to ensure we cleanup properly on an error
condition"
* tag 'selinux-pr-20200416' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: free str on error in str_read()
for invalid pointer dereference and uninitialized variable use on
asynchronous create and unlink error paths.
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Merge tag 'ceph-for-5.7-rc2' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
- a set of patches for a deadlock on "rbd map" error path
- a fix for invalid pointer dereference and uninitialized variable use
on asynchronous create and unlink error paths.
* tag 'ceph-for-5.7-rc2' of git://github.com/ceph/ceph-client:
ceph: fix potential bad pointer deref in async dirops cb's
rbd: don't mess with a page vector in rbd_notify_op_lock()
rbd: don't test rbd_dev->opts in rbd_dev_image_release()
rbd: call rbd_dev_unprobe() after unwatching and flushing notifies
rbd: avoid a deadlock on header_rwsem when flushing notifies
A dump_stack call for signature related errors can be too noisy
and not of much value in debugging such problems.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Shyam Prasad N <nspmangalore@gmail.com>
snapshot trigger. On a slow machine, the trigger can occur before the
snapshot is allocated causing a warning to be displayed in the ring buffer,
and no snapshot triggering. Reversing the allocation and the enabling of the
trigger fixes the problem.
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Merge tag 'trace-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"This fixes a small race between allocating a snapshot buffer and
setting the snapshot trigger.
On a slow machine, the trigger can occur before the snapshot is
allocated causing a warning to be displayed in the ring buffer, and no
snapshot triggering. Reversing the allocation and the enabling of the
trigger fixes the problem"
* tag 'trace-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
Linus Torvalds