Commit Graph

1310337 Commits

Author SHA1 Message Date
Linus Torvalds
dd4f50373e Pin control fixes for the v6.12 kernel series:
- Fix two error paths and a missing semicolon in the
   Intel driver.
 
 - Add a missing ACPI ID for the Intel Panther Lake.
 
 - Check return value of devm_kasprintf() in the Apple
   and STM32 drivers.
 
 - Add a missing mutex_destroy() in the aw9523 driver.
 
 - Fix a double free in cv1800_pctrl_dt_node_to_map()
   in the Sophgo driver.
 
 - Fix a double free in ma35_pinctrl_dt_node_to_map_func()
   in the Nuvoton driver.
 
 - Fix a bug in the Ocelot interrupt handler making the
   system hang.
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Merge tag 'pinctrl-v6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Mostly error path fixes, but one pretty serious interrupt problem in
  the Ocelot driver as well:

   - Fix two error paths and a missing semicolon in the Intel driver

   - Add a missing ACPI ID for the Intel Panther Lake

   - Check return value of devm_kasprintf() in the Apple and STM32
     drivers

   - Add a missing mutex_destroy() in the aw9523 driver

   - Fix a double free in cv1800_pctrl_dt_node_to_map() in the Sophgo
     driver

   - Fix a double free in ma35_pinctrl_dt_node_to_map_func() in the
     Nuvoton driver

   - Fix a bug in the Ocelot interrupt handler making the system hang"

* tag 'pinctrl-v6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: ocelot: fix system hang on level based interrupts
  pinctrl: nuvoton: fix a double free in ma35_pinctrl_dt_node_to_map_func()
  pinctrl: sophgo: fix double free in cv1800_pctrl_dt_node_to_map()
  pinctrl: intel: platform: Add Panther Lake to the list of supported
  pinctrl: aw9523: add missing mutex_destroy
  pinctrl: stm32: check devm_kasprintf() returned value
  pinctrl: apple: check devm_kasprintf() returned value
  pinctrl: intel: platform: use semicolon instead of comma in ncommunities assignment
  pinctrl: intel: platform: fix error path in device_for_each_child_node()
2024-10-20 13:55:46 -07:00
Kent Overstreet
f0d3302073 bcachefs: Workaround for kvmalloc() not supporting > INT_MAX allocations
kvmalloc() doesn't support allocations > INT_MAX, but vmalloc() does -
the limit should be lifted, but we can work around this for now.

A user with a 75 TB filesystem reported the following journal replay
error:
https://github.com/koverstreet/bcachefs/issues/769

In journal replay we have to sort and dedup all the keys from the
journal, which means we need a large contiguous allocation. Given that
the user has 128GB of ram, the 2GB limit on allocation size has become
far too small.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-10-20 16:50:14 -04:00
Kent Overstreet
3956ff8bc2 bcachefs: Don't use wait_event_interruptible() in recovery
Fix a bug where mount was failing with -ERESTARTSYS:
https://github.com/koverstreet/bcachefs/issues/741

We only want the interruptible wait when called from fsync.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-10-20 16:50:14 -04:00
Kent Overstreet
eb5db64c45 bcachefs: Fix __bch2_fsck_err() warning
We only warn about having a btree_trans that wasn't passed in if we'll
be prompting.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-10-20 16:50:14 -04:00
Linus Torvalds
c55228220d Char/Misc/IIO fixes for 6.12-rc4
Here are a number of small char/misc/iio driver fixes for 6.12-rc4.
 Included in here are the following:
   - loads of small iio driver fixes for reported problems
   - parport driver out-of-bounds fix
   - Kconfig description and MAINTAINERS file updates
 
 All of these, except for the Kconfig and MAINTAINERS file updates have
 been in linux-next all week.  Those other two are just documentation
 changes and will have no runtime issues and were merged on Friday.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull misc driver fixes from Greg KH:
 "Here are a number of small char/misc/iio driver fixes for 6.12-rc4:

   - loads of small iio driver fixes for reported problems

   - parport driver out-of-bounds fix

   - Kconfig description and MAINTAINERS file updates

  All of these, except for the Kconfig and MAINTAINERS file updates have
  been in linux-next all week. Those other two are just documentation
  changes and will have no runtime issues and were merged on Friday"

* tag 'char-misc-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (39 commits)
  misc: rtsx: list supported models in Kconfig help
  MAINTAINERS: Remove some entries due to various compliance requirements.
  misc: microchip: pci1xxxx: add support for NVMEM_DEVID_AUTO for OTP device
  misc: microchip: pci1xxxx: add support for NVMEM_DEVID_AUTO for EEPROM device
  parport: Proper fix for array out-of-bounds access
  iio: frequency: admv4420: fix missing select REMAP_SPI in Kconfig
  iio: frequency: {admv4420,adrf6780}: format Kconfig entries
  iio: adc: ad4695: Add missing Kconfig select
  iio: adc: ti-ads8688: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  iio: hid-sensors: Fix an error handling path in _hid_sensor_set_report_latency()
  iioc: dac: ltc2664: Fix span variable usage in ltc2664_channel_config()
  iio: dac: stm32-dac-core: add missing select REGMAP_MMIO in Kconfig
  iio: dac: ltc1660: add missing select REGMAP_SPI in Kconfig
  iio: dac: ad5770r: add missing select REGMAP_SPI in Kconfig
  iio: amplifiers: ada4250: add missing select REGMAP_SPI in Kconfig
  iio: frequency: adf4377: add missing select REMAP_SPI in Kconfig
  iio: resolver: ad2s1210: add missing select (TRIGGERED_)BUFFER in Kconfig
  iio: resolver: ad2s1210 add missing select REGMAP in Kconfig
  iio: proximity: mb1232: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  iio: pressure: bm1390: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  ...
2024-10-20 13:10:44 -07:00
Linus Torvalds
c01ac4b944 TTY/Serial driver fixes for 6.12-rc4
Here are some small tty and serial driver fixes for 6.12-rc4.  Included
 in here are:
   - qcom-geni serial driver fixes, wow what a mess of a UART chip that
     thing is...
   - vt infoleak fix for odd font sizes
   - imx serial driver bugfix
   - yet-another n_gsm ldisc bugfix, slowly chipping down the issues in
     that piece of code.
 
 All of these have been in linux-next for over a week with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are some small tty and serial driver fixes for 6.12-rc4:

   - qcom-geni serial driver fixes, wow what a mess of a UART chip that
     thing is...

   - vt infoleak fix for odd font sizes

   - imx serial driver bugfix

   - yet-another n_gsm ldisc bugfix, slowly chipping down the issues in
     that piece of code

  All of these have been in linux-next for over a week with no reported
  issues"

* tag 'tty-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: qcom-geni: rename suspend functions
  serial: qcom-geni: drop unused receive parameter
  serial: qcom-geni: drop flip buffer WARN()
  serial: qcom-geni: fix rx cancel dma status bit
  serial: qcom-geni: fix receiver enable
  serial: qcom-geni: fix dma rx cancellation
  serial: qcom-geni: fix shutdown race
  serial: qcom-geni: revert broken hibernation support
  serial: qcom-geni: fix polled console initialisation
  serial: imx: Update mctrl old_status on RTSD interrupt
  tty: n_gsm: Fix use-after-free in gsm_cleanup_mux
  vt: prevent kernel-infoleak in con_font_get()
2024-10-20 13:03:30 -07:00
Linus Torvalds
b68c189570 USB driver fixes for 6.12-rc4
Here are some small USB driver fixes and new device ids for 6.12-rc4.
 Included in here are:
   - xhci driver fixes for a number of reported issues
   - new usb-serial driver ids
   - dwc3 driver fixes for reported problems.
   - usb gadget driver fixes for reported problems
   - typec driver fixes
   - MAINTAINER file updates
 
 All of these have been in linux-next this week with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB driver fixes from Greg KH:
 "Here are some small USB driver fixes and new device ids for 6.12-rc4:

   - xhci driver fixes for a number of reported issues

   - new usb-serial driver ids

   - dwc3 driver fixes for reported problems.

   - usb gadget driver fixes for reported problems

   - typec driver fixes

   - MAINTAINER file updates

  All of these have been in linux-next this week with no reported issues"

* tag 'usb-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: serial: option: add Telit FN920C04 MBIM compositions
  USB: serial: option: add support for Quectel EG916Q-GL
  xhci: dbc: honor usb transfer size boundaries.
  usb: xhci: Fix handling errors mid TD followed by other errors
  xhci: Mitigate failed set dequeue pointer commands
  xhci: Fix incorrect stream context type macro
  USB: gadget: dummy-hcd: Fix "task hung" problem
  usb: gadget: f_uac2: fix return value for UAC2_ATTRIBUTE_STRING store
  usb: dwc3: core: Fix system suspend on TI AM62 platforms
  xhci: tegra: fix checked USB2 port number
  usb: dwc3: Wait for EndXfer completion before restoring GUSB2PHYCFG
  usb: typec: qcom-pmic-typec: fix sink status being overwritten with RP_DEF
  usb: typec: altmode should keep reference to parent
  MAINTAINERS: usb: raw-gadget: add bug tracker link
  MAINTAINERS: Add an entry for the LJCA drivers
2024-10-20 12:57:53 -07:00
Linus Torvalds
db87114dcf - Explicitly disable the TSC deadline timer when going idle to address
some CPU errata in that area
 
 - Do not apply the Zenbleed fix on anything else except AMD Zen2 on the
   late microcode loading path
 
 - Clear CPU buffers later in the NMI exit path on 32-bit to avoid
   register clearing while they still contain sensitive data, for the
   RDFS mitigation
 
 - Do not clobber EFLAGS.ZF with VERW on the opportunistic SYSRET exit
   path on 32-bit
 
 - Fix parsing issues of memory bandwidth specification in sysfs for
   resctrl's memory bandwidth allocation feature
 
 - Other small cleanups and improvements
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Merge tag 'x86_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Explicitly disable the TSC deadline timer when going idle to address
   some CPU errata in that area

 - Do not apply the Zenbleed fix on anything else except AMD Zen2 on the
   late microcode loading path

 - Clear CPU buffers later in the NMI exit path on 32-bit to avoid
   register clearing while they still contain sensitive data, for the
   RDFS mitigation

 - Do not clobber EFLAGS.ZF with VERW on the opportunistic SYSRET exit
   path on 32-bit

 - Fix parsing issues of memory bandwidth specification in sysfs for
   resctrl's memory bandwidth allocation feature

 - Other small cleanups and improvements

* tag 'x86_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Always explicitly disarm TSC-deadline timer
  x86/CPU/AMD: Only apply Zenbleed fix for Zen2 during late microcode load
  x86/bugs: Use code segment selector for VERW operand
  x86/entry_32: Clear CPU buffers after register restore in NMI return
  x86/entry_32: Do not clobber user EFLAGS.ZF
  x86/resctrl: Annotate get_mem_config() functions as __init
  x86/resctrl: Avoid overflow in MB settings in bw_validate()
  x86/amd_nb: Add new PCI ID for AMD family 1Ah model 20h
2024-10-20 12:04:32 -07:00
Linus Torvalds
949c9ef59b - Fix a case for sifive-plic where an interrupt gets disabled *and* masked and
remains masked when it gets reenabled later
 
 - Plug a small race in GIC-v4 where userspace can force an affinity change of
   a virtual CPU (vPE) in its unmapping path
 
 - Do not mix the two sets of ocelot irqchip's registers in the mask
   calculation of the main interrupt sticky register
 
 - Other smaller fixlets and cleanups
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Merge tag 'irq_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Borislav Petkov:

 - Fix a case for sifive-plic where an interrupt gets disabled *and*
   masked and remains masked when it gets reenabled later

 - Plug a small race in GIC-v4 where userspace can force an affinity
   change of a virtual CPU (vPE) in its unmapping path

 - Do not mix the two sets of ocelot irqchip's registers in the mask
   calculation of the main interrupt sticky register

- Other smaller fixlets and cleanups

* tag 'irq_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/renesas-rzg2l: Fix missing put_device
  irqchip/riscv-intc: Fix SMP=n boot with ACPI
  irqchip/sifive-plic: Unmask interrupt in plic_irq_enable()
  irqchip/gic-v4: Don't allow a VMOVP on a dying VPE
  irqchip/sifive-plic: Return error code on failure
  irqchip/riscv-imsic: Fix output text of base address
  irqchip/ocelot: Comment sticky register clearing code
  irqchip/ocelot: Fix trigger register address
  irqchip: Remove obsolete config ARM_GIC_V3_ITS_PCI
2024-10-20 11:44:07 -07:00
Linus Torvalds
2b4d25010d - Add PREEMPT_RT maintainers
- Fix another aspect of delayed dequeued tasks wrt determining their state,
   i.e., whether they're runnable or blocked
 
 - Handle delayed dequeued tasks and their migration wrt PSI properly
 
 - Fix the situation where a delayed dequeue task gets enqueued into a new
   class, which should not happen
 
 - Fix a case where memory allocation would happen while the runqueue lock is
   held, which is a no-no
 
 - Do not over-schedule when tasks with shorter slices preempt the currently
   running task
 
 - Make sure delayed to deque entities are properly handled before unthrottling
 
 - Other smaller cleanups and improvements
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Merge tag 'sched_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduling fixes from Borislav Petkov:

 - Add PREEMPT_RT maintainers

 - Fix another aspect of delayed dequeued tasks wrt determining their
   state, i.e., whether they're runnable or blocked

 - Handle delayed dequeued tasks and their migration wrt PSI properly

 - Fix the situation where a delayed dequeue task gets enqueued into a
   new class, which should not happen

 - Fix a case where memory allocation would happen while the runqueue
   lock is held, which is a no-no

 - Do not over-schedule when tasks with shorter slices preempt the
   currently running task

 - Make sure delayed to deque entities are properly handled before
   unthrottling

 - Other smaller cleanups and improvements

* tag 'sched_urgent_for_v6.12_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Add an entry for PREEMPT_RT.
  sched/fair: Fix external p->on_rq users
  sched/psi: Fix mistaken CPU pressure indication after corrupted task state bug
  sched/core: Dequeue PSI signals for blocked tasks that are delayed
  sched: Fix delayed_dequeue vs switched_from_fair()
  sched/core: Disable page allocation in task_tick_mm_cid()
  sched/deadline: Use hrtick_enabled_dl() before start_hrtick_dl()
  sched/eevdf: Fix wakeup-preempt by checking cfs_rq->nr_running
  sched: Fix sched_delayed vs cfs_bandwidth
2024-10-20 11:30:56 -07:00
Linus Torvalds
a5ee44c829 xen: branch for v6.12-rc4
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Merge tag 'for-linus-6.12a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "A single fix for a build failure introduced this merge window"

* tag 'for-linus-6.12a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: Remove dependency between pciback and privcmd
2024-10-20 11:25:58 -07:00
Linus Torvalds
10e93e1900 dma-mapping fix for Linux 6.12
Just another small tracing fix from Sean.
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Merge tag 'dma-mapping-6.12-2024-10-20' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:
 "Just another small tracing fix from Sean"

* tag 'dma-mapping-6.12-2024-10-20' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: fix tracing dma_alloc/free with vmalloc'd memory
2024-10-20 10:56:42 -07:00
Paolo Bonzini
e9001a382f KVM/arm64 fixes for 6.12, take #3
- Stop wasting space in the HYP idmap, as we are dangerously close
   to the 4kB limit, and this has already exploded in -next
 
 - Fix another race in vgic_init()
 
 - Fix a UBSAN error when faking the cache topology with MTE
   enabled
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Merge tag 'kvmarm-fixes-6.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.12, take #3

- Stop wasting space in the HYP idmap, as we are dangerously close
  to the 4kB limit, and this has already exploded in -next

- Fix another race in vgic_init()

- Fix a UBSAN error when faking the cache topology with MTE
  enabled
2024-10-20 12:10:59 -04:00
Paolo Bonzini
ddd5c58201 KVM/arm64 fixes for 6.12, take #2
- Fix the guest view of the ID registers, making the relevant fields
   writable from userspace (affecting ID_AA64DFR0_EL1 and ID_AA64PFR1_EL1)
 
 - Correcly expose S1PIE to guests, fixing a regression introduced
   in 6.12-rc1 with the S1POE support
 
 - Fix the recycling of stage-2 shadow MMUs by tracking the context
   (are we allowed to block or not) as well as the recycling state
 
 - Address a couple of issues with the vgic when userspace misconfigures
   the emulation, resulting in various splats. Headaches courtesy
   of our Syzkaller friends
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Merge tag 'kvmarm-fixes-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.12, take #2

- Fix the guest view of the ID registers, making the relevant fields
  writable from userspace (affecting ID_AA64DFR0_EL1 and ID_AA64PFR1_EL1)

- Correcly expose S1PIE to guests, fixing a regression introduced
  in 6.12-rc1 with the S1POE support

- Fix the recycling of stage-2 shadow MMUs by tracking the context
  (are we allowed to block or not) as well as the recycling state

- Address a couple of issues with the vgic when userspace misconfigures
  the emulation, resulting in various splats. Headaches courtesy
  of our Syzkaller friends
2024-10-20 12:10:56 -04:00
Cyan Yang
3ec4350d4e RISCV: KVM: use raw_spinlock for critical section in imsic
For the external interrupt updating procedure in imsic, there was a
spinlock to protect it already. But since it should not be preempted in
any cases, we should turn to use raw_spinlock to prevent any preemption
in case PREEMPT_RT was enabled.

Signed-off-by: Cyan Yang <cyan.yang@sifive.com>
Reviewed-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Message-ID: <20240919160126.44487-1-cyan.yang@sifive.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 12:10:44 -04:00
Sean Christopherson
773cca1834 KVM: selftests: Fix out-of-bounds reads in CPUID test's array lookups
When looking for a "mangled", i.e. dynamic, CPUID entry, terminate the
walk based on the number of array _entries_, not the size in bytes of
the array.  Iterating based on the total size of the array can result in
false passes, e.g. if the random data beyond the array happens to match
a CPUID entry's function and index.

Fixes: fb18d053b7 ("selftest: kvm: x86: test KVM_GET_CPUID2 and guest visible CPUIDs against KVM_GET_SUPPORTED_CPUID")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-ID: <20241003234337.273364-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 12:10:44 -04:00
Vitaly Kuznetsov
9a400068a1 KVM: selftests: x86: Avoid using SSE/AVX instructions
Some distros switched gcc to '-march=x86-64-v3' by default and while it's
hard to find a CPU which doesn't support it today, many KVM selftests fail
with

  ==== Test Assertion Failure ====
    lib/x86_64/processor.c:570: Unhandled exception in guest
    pid=72747 tid=72747 errno=4 - Interrupted system call
    Unhandled exception '0x6' at guest RIP '0x4104f7'

The failure is easy to reproduce elsewhere with

   $ make clean && CFLAGS='-march=x86-64-v3' make -j && ./x86_64/kvm_pv_test

The root cause of the problem seems to be that with '-march=x86-64-v3' GCC
uses AVX* instructions (VMOVQ in the example above) and without prior
XSETBV() in the guest this results in #UD. It is certainly possible to add
it there, e.g. the following saves the day as well:

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-ID: <20240920154422.2890096-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 12:10:27 -04:00
Hangbin Liu
3b05b9c36d MAINTAINERS: add samples/pktgen to NETWORKING [GENERAL]
samples/pktgen is missing in the MAINTAINERS file.

Suggested-by: Antoine Tenart <atenart@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Message-ID: <20241018005301.10052-1-liuhangbin@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-20 09:41:10 -05:00
Jesper Dangaard Brouer
3e14d8ebaa mailmap: update entry for Jesper Dangaard Brouer
Mapping all my previously used emails to my kernel.org email.

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Message-ID: <172909057364.2452383.8019986488234344607.stgit@firesoul>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-20 09:41:10 -05:00
Peter Rashleigh
12bc14949c net: dsa: mv88e6xxx: Fix error when setting port policy on mv88e6393x
mv88e6393x_port_set_policy doesn't correctly shift the ptr value when
converting the policy format between the old and new styles, so the
target register ends up with the ptr being written over the data bits.

Shift the pointer to align with the format expected by
mv88e6393x_port_policy_write().

Fixes: 6584b26020 ("net: dsa: mv88e6xxx: implement .port_set_policy for Amethyst")
Signed-off-by: Peter Rashleigh <peter@rashleigh.ca>
Reviewed-by: Simon Horman <horms@kernel.org>
Message-ID: <20241016040822.3917-1-peter@rashleigh.ca>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-20 09:41:10 -05:00
Sean Christopherson
f559b2e9c5 KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory
Ignore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits
4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't
enforce 32-byte alignment of nCR3.

In the absolute worst case scenario, failure to ignore bits 4:0 can result
in an out-of-bounds read, e.g. if the target page is at the end of a
memslot, and the VMM isn't using guard pages.

Per the APM:

  The CR3 register points to the base address of the page-directory-pointer
  table. The page-directory-pointer table is aligned on a 32-byte boundary,
  with the low 5 address bits 4:0 assumed to be 0.

And the SDM's much more explicit:

  4:0    Ignored

Note, KVM gets this right when loading PDPTRs, it's only the nSVM flow
that is broken.

Fixes: e4e517b4be ("KVM: MMU: Do not unconditionally read PDPTE from guest memory")
Reported-by: Kirk Swidowski <swidowski@google.com>
Cc: Andy Nguyen <theflow@google.com>
Cc: 3pvd <3pvd@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20241009140838.1036226-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:31:06 -04:00
Maxim Levitsky
731285fbb6 KVM: VMX: reset the segment cache after segment init in vmx_vcpu_reset()
Reset the segment cache after segment initialization in vmx_vcpu_reset()
to harden KVM against caching stale/uninitialized data.  Without the
recent fix to bypass the cache in kvm_arch_vcpu_put(), the following
scenario is possible:

 - vCPU is just created, and the vCPU thread is preempted before
   SS.AR_BYTES is written in vmx_vcpu_reset().

 - When scheduling out the vCPU task, kvm_arch_vcpu_in_kernel() =>
   vmx_get_cpl() reads and caches '0' for SS.AR_BYTES.

 - vmx_vcpu_reset() => seg_setup() configures SS.AR_BYTES, but doesn't
   invoke vmx_segment_cache_clear() to invalidate the cache.

As a result, KVM retains a stale value in the cache, which can be read,
e.g. via KVM_GET_SREGS.  Usually this is not a problem because the VMX
segment cache is reset on each VM-Exit, but if the userspace VMM (e.g KVM
selftests) reads and writes system registers just after the vCPU was
created, _without_ modifying SS.AR_BYTES, userspace will write back the
stale '0' value and ultimately will trigger a VM-Entry failure due to
incorrect SS segment type.

Invalidating the cache after writing the VMCS doesn't address the general
issue of cache accesses from IRQ context being unsafe, but it does prevent
KVM from clobbering the VMCS, i.e. mitigates the harm done _if_ KVM has a
bug that results in an unsafe cache access.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Fixes: 2fb92db1ec ("KVM: VMX: Cache vmcs segment fields")
[sean: rework changelog to account for previous patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20241009175002.1118178-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:31:06 -04:00
Sean Christopherson
5a27984244 KVM: x86: Clean up documentation for KVM_X86_QUIRK_SLOT_ZAP_ALL
Massage the documentation for KVM_X86_QUIRK_SLOT_ZAP_ALL to call out that
it applies to moved memslots as well as deleted memslots, to avoid KVM's
"fast zap" terminology (which has no meaning for userspace), and to reword
the documented targeted zap behavior to specifically say that KVM _may_
zap a subset of all SPTEs.  As evidenced by the fix to zap non-leafs SPTEs
with gPTEs, formally documenting KVM's exact internal behavior is risky
and unnecessary.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20241009192345.1148353-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:31:05 -04:00
Sean Christopherson
28cf497881 KVM: x86/mmu: Add lockdep assert to enforce safe usage of kvm_unmap_gfn_range()
Add a lockdep assertion in kvm_unmap_gfn_range() to ensure that either
mmu_invalidate_in_progress is elevated, or that the range is being zapped
due to memslot removal (loosely detected by slots_lock being held).
Zapping SPTEs without mmu_invalidate_{in_progress,seq} protection is unsafe
as KVM's page fault path snapshots state before acquiring mmu_lock, and
thus can create SPTEs with stale information if vCPUs aren't forced to
retry faults (due to seeing an in-progress or past MMU invalidation).

Memslot removal is a special case, as the memslot is retrieved outside of
mmu_invalidate_seq, i.e. doesn't use the "standard" protections, and
instead relies on SRCU synchronization to ensure any in-flight page faults
are fully resolved before zapping SPTEs.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20241009192345.1148353-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:31:05 -04:00
Sean Christopherson
58a20a9435 KVM: x86/mmu: Zap only SPs that shadow gPTEs when deleting memslot
When performing a targeted zap on memslot removal, zap only MMU pages that
shadow guest PTEs, as zapping all SPs that "match" the gfn is inexact and
unnecessary.  Furthermore, for_each_gfn_valid_sp() arguably shouldn't
exist, because it doesn't do what most people would it expect it to do.
The "round gfn for level" adjustment that is done for direct SPs (no gPTE)
means that the exact gfn comparison will not get a match, even when a SP
does "cover" a gfn, or was even created specifically for a gfn.

For memslot deletion specifically, KVM's behavior will vary significantly
based on the size and alignment of a memslot, and in weird ways.  E.g. for
a 4KiB memslot, KVM will zap more SPs if the slot is 1GiB aligned than if
it's only 4KiB aligned.  And as described below, zapping SPs in the
aligned case overzaps for direct MMUs, as odds are good the upper-level
SPs are serving other memslots.

To iterate over all potentially-relevant gfns, KVM would need to make a
pass over the hash table for each level, with the gfn used for lookup
rounded for said level.  And then check that the SP is of the correct
level, too, e.g. to avoid over-zapping.

But even then, KVM would massively overzap, as processing every level is
all but guaranteed to zap SPs that serve other memslots, especially if the
memslot being removed is relatively small.  KVM could mitigate that issue
by processing only levels that can be possible guest huge pages, i.e. are
less likely to be re-used for other memslot, but while somewhat logical,
that's quite arbitrary and would be a bit of a mess to implement.

So, zap only SPs with gPTEs, as the resulting behavior is easy to describe,
is predictable, and is explicitly minimal, i.e. KVM only zaps SPs that
absolutely must be zapped.

Cc: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yan Zhao <yan.y.zhao@intel.com>
Message-ID: <20241009192345.1148353-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:08:17 -04:00
Kirill A. Shutemov
8e690b817e x86/kvm: Override default caching mode for SEV-SNP and TDX
AMD SEV-SNP and Intel TDX have limited access to MTRR: either it is not
advertised in CPUID or it cannot be programmed (on TDX, due to #VE on
CR0.CD clear).

This results in guests using uncached mappings where it shouldn't and
pmd/pud_set_huge() failures due to non-uniform memory type reported by
mtrr_type_lookup().

Override MTRR state, making it WB by default as the kernel does for
Hyper-V guests.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: Binbin Wu <binbin.wu@intel.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <20241015095818.357915-1-kirill.shutemov@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:07:02 -04:00
Dr. David Alan Gilbert
bc07eea2f3 KVM: Remove unused kvm_vcpu_gfn_to_pfn_atomic
The last use of kvm_vcpu_gfn_to_pfn_atomic was removed by commit
1bbc60d0c7 ("KVM: x86/mmu: Remove MMU auditing")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Message-ID: <20241001141354.18009-3-linux@treblig.org>
[Adjust Documentation/virt/kvm/locking.rst. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:05:51 -04:00
Dr. David Alan Gilbert
88a387cf9e KVM: Remove unused kvm_vcpu_gfn_to_pfn
The last use of kvm_vcpu_gfn_to_pfn was removed by commit
b1624f99aa ("KVM: Remove kvm_vcpu_gfn_to_page() and kvm_vcpu_gpa_to_page()")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Message-ID: <20241001141354.18009-2-linux@treblig.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-20 07:04:52 -04:00
Linus Torvalds
715ca9dd68 io_uring-6.12-20241019
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Merge tag 'io_uring-6.12-20241019' of git://git.kernel.dk/linux

Pull one more io_uring fix from Jens Axboe:
 "Fix for a regression introduced in 6.12-rc2, where a condition check
  was negated and hence -EAGAIN would bubble back up up to userspace
  rather than trigger a retry condition"

* tag 'io_uring-6.12-20241019' of git://git.kernel.dk/linux:
  io_uring/rw: fix wrong NOWAIT check in io_rw_init_file()
2024-10-19 17:04:52 -07:00
Aleksandr Mishin
eb592008f7 octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()
build_skb() returns NULL in case of a memory allocation failure so handle
it inside __octep_oq_process_rx() to avoid NULL pointer dereference.

__octep_oq_process_rx() is called during NAPI polling by the driver. If
skb allocation fails, keep on pulling packets out of the Rx DMA queue: we
shouldn't break the polling immediately and thus falsely indicate to the
octep_napi_poll() that the Rx pressure is going down. As there is no
associated skb in this case, don't process the packets and don't push them
up the network stack - they are skipped.

Helper function is implemented to unmmap/flush all the fragment buffers
used by the dropped packet. 'alloc_failures' counter is incremented to
mark the skb allocation error in driver statistics.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 37d79d0596 ("octeon_ep: add Tx/Rx processing and interrupt support")
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:20:07 -05:00
Aleksandr Mishin
bd28df2619 octeon_ep: Implement helper for iterating packets in Rx queue
The common code with some packet and index manipulations is extracted and
moved to newly implemented helper to make the code more readable and avoid
duplication. This is a preparation for skb allocation failure handling.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Suggested-by: Simon Horman <horms@kernel.org>
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:20:07 -05:00
Vadim Fedorenko
4ab3e4983b bnxt_en: replace ptp_lock with irqsave variant
In netpoll configuration the completion processing can happen in hard
irq context which will break with spin_lock_bh() for fullfilling RX
timestamp in case of all packets timestamping. Replace it with
spin_lock_irqsave() variant.

Fixes: 7f5515d19c ("bnxt_en: Get the RX packet timestamp")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Message-ID: <20241016195234.2622004-1-vadfed@meta.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:16:25 -05:00
Michel Alex
de96f6a300 net: phy: dp83822: Fix reset pin definitions
This change fixes a rare issue where the PHY fails to detect a link
due to incorrect reset behavior.

The SW_RESET definition was incorrectly assigned to bit 14, which is the
Digital Restart bit according to the datasheet. This commit corrects
SW_RESET to bit 15 and assigns DIG_RESTART to bit 14 as per the
datasheet specifications.

The SW_RESET define is only used in the phy_reset function, which fully
re-initializes the PHY after the reset is performed. The change in the
bit definitions should not have any negative impact on the functionality
of the PHY.

v2:
- added Fixes tag
- improved commit message

Cc: stable@vger.kernel.org
Fixes: 5dc39fd5ef ("net: phy: DP83822: Add ability to advertise Fiber connection")
Signed-off-by: Alex Michel <alex.michel@wiedemann-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Message-ID: <AS1P250MB0608A798661549BF83C4B43EA9462@AS1P250MB0608.EURP250.PROD.OUTLOOK.COM>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:14:21 -05:00
Jakub Kicinski
9f86df0e75 MAINTAINERS: add Simon as an official reviewer
Simon has been diligently and consistently reviewing networking
changes for at least as long as our development statistics
go back. Often if not usually topping the list of reviewers.
Make his role official.

Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Message-ID: <20241015153005.2854018-1-kuba@kernel.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:07:46 -05:00
Jakub Boehm
f99cf996ba net: plip: fix break; causing plip to never transmit
Since commit
  71ae2cb305 ("net: plip: Fix fall-through warnings for Clang")

plip was not able to send any packets, this patch replaces one
unintended break; with fallthrough; which was originally missed by
commit 9525d69a36 ("net: plip: mark expected switch fall-throughs").

I have verified with a real hardware PLIP connection that everything
works once again after applying this patch.

Fixes: 71ae2cb305 ("net: plip: Fix fall-through warnings for Clang")
Signed-off-by: Jakub Boehm <boehm.jakub@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Message-ID: <20241015-net-plip-tx-fix-v1-1-32d8be1c7e0b@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:06:55 -05:00
Wang Hai
e4dd8bfe0f be2net: fix potential memory leak in be_xmit()
The be_xmit() returns NETDEV_TX_OK without freeing skb
in case of be_xmit_enqueue() fails, add dev_kfree_skb_any() to fix it.

Fixes: 760c295e0e ("be2net: Support for OS2BMC.")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Message-ID: <20241015144802.12150-1-wanghai38@huawei.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:06:08 -05:00
Wang Hai
2cb3f56e82 net/sun3_82586: fix potential memory leak in sun3_82586_send_packet()
The sun3_82586_send_packet() returns NETDEV_TX_OK without freeing skb
in case of skb->len being too long, add dev_kfree_skb() to fix it.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Message-ID: <20241015144148.7918-1-wanghai38@huawei.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 16:04:20 -05:00
Kory Maincent
f2767a4195 net: pse-pd: Fix out of bound for loop
Adjust the loop limit to prevent out-of-bounds access when iterating over
PI structures. The loop should not reach the index pcdev->nr_lines since
we allocate exactly pcdev->nr_lines number of PI structures. This fix
ensures proper bounds are maintained during iterations.

Fixes: 9be9567a7c ("net: pse-pd: Add support for PSE PIs")
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Message-ID: <20241015130255.125508-1-kory.maincent@bootlin.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2024-10-19 15:55:56 -05:00
Linus Torvalds
531643fcd9 SCSI fixes on 20241019
Fixes all in drivers. The largest is the mpi3mr which corrects a phy
 count limit that should only apply to the controller but was being
 incorrectly applied to expander phys.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Fixes all in drivers. The largest is the mpi3mr which corrects a phy
  count limit that should only apply to the controller but was being
  incorrectly applied to expander phys"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: core: Fix null-ptr-deref in target_alloc_device()
  scsi: mpi3mr: Validate SAS port assignments
  scsi: ufs: core: Set SDEV_OFFLINE when UFS is shut down
  scsi: ufs: core: Requeue aborted request
  scsi: ufs: core: Fix the issue of ICU failure
2024-10-19 12:52:19 -07:00
Linus Torvalds
06526daaff ftrace: A couple of fixes to function graph infrastructure
- Fix allocation of idle shadow stack allocation during hotplug
 
   If function graph tracing is started when a CPU is offline, if it were
   come online during the trace then the idle task that represents the CPU
   will not get a shadow stack allocated for it. This means all function
   graph hooks that happen while that idle task is running (including in
   interrupt mode) will have all its events dropped.
 
   Switch over to the CPU hotplug mechanism that will have any newly
   brought on line CPU get a callback that can allocate the shadow stack
   for its idle task.
 
 - Fix allocation size of the ret_stack_list array
 
   When function graph tracing converted over to allowing more than one
   user at a time, it had to convert its shadow stack from an array of
   ret_stack structures to an array of unsigned longs. The shadow stacks
   are allocated in batches of 32 at a time and assigned to every running
   task. The batch is held by the ret_stack_list array. But when the
   conversion happened, instead of allocating an array of 32 pointers, it
   was allocated as a ret_stack itself (PAGE_SIZE). This ret_stack_list
   gets passed to a function that iterates over what it believes is its
   size defined by the FTRACE_RETSTACK_ALLOC_SIZE macro (which is 32).
 
   Luckily (PAGE_SIZE) is greater than 32 * sizeof(long), otherwise this
   would have been an array overflow. This still should be fixed and the
   ret_stack_list should be allocated to the size it is expected to be as
   someday it may end up being bigger than SHADOW_STACK_SIZE.
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Merge tag 'ftrace-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "A couple of fixes to function graph infrastructure:

   - Fix allocation of idle shadow stack allocation during hotplug

     If function graph tracing is started when a CPU is offline, if it
     were come online during the trace then the idle task that
     represents the CPU will not get a shadow stack allocated for it.
     This means all function graph hooks that happen while that idle
     task is running (including in interrupt mode) will have all its
     events dropped.

     Switch over to the CPU hotplug mechanism that will have any newly
     brought on line CPU get a callback that can allocate the shadow
     stack for its idle task.

   - Fix allocation size of the ret_stack_list array

     When function graph tracing converted over to allowing more than
     one user at a time, it had to convert its shadow stack from an
     array of ret_stack structures to an array of unsigned longs. The
     shadow stacks are allocated in batches of 32 at a time and assigned
     to every running task. The batch is held by the ret_stack_list
     array.

     But when the conversion happened, instead of allocating an array of
     32 pointers, it was allocated as a ret_stack itself (PAGE_SIZE).
     This ret_stack_list gets passed to a function that iterates over
     what it believes is its size defined by the
     FTRACE_RETSTACK_ALLOC_SIZE macro (which is 32).

     Luckily (PAGE_SIZE) is greater than 32 * sizeof(long), otherwise
     this would have been an array overflow. This still should be fixed
     and the ret_stack_list should be allocated to the size it is
     expected to be as someday it may end up being bigger than
     SHADOW_STACK_SIZE"

* tag 'ftrace-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  fgraph: Allocate ret_stack_list with proper size
  fgraph: Use CPU hotplug mechanism to initialize idle shadow stacks
2024-10-19 12:42:14 -07:00
Linus Torvalds
8203ca3809 ipe/stable-6.12 PR 20241018
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Merge tag 'ipe-pr-20241018' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe

Pull ipe fixes from Fan Wu:
 "This addresses several issues identified by Luca when attempting to
  enable IPE on Debian and systemd:

   - address issues with IPE policy update errors and policy update
     version check, improving the clarity of error messages for better
     understanding by userspace programs.

   - enable IPE policies to be signed by secondary and platform
     keyrings, facilitating broader use across general Linux
     distributions like Debian.

   - updates the IPE entry in the MAINTAINERS file to reflect the new
     tree URL and my updated email from kernel.org"

* tag 'ipe-pr-20241018' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe:
  MAINTAINERS: update IPE tree url and Fan Wu's email
  ipe: fallback to platform keyring also if key in trusted keyring is rejected
  ipe: allow secondary and platform keyrings to install/update policies
  ipe: also reject policy updates with the same version
  ipe: return -ESTALE instead of -EINVAL on update when new policy has a lower version
2024-10-19 11:48:14 -07:00
Linus Torvalds
f9e4825524 Input updates for v6.12-rc3
- a fix for Zinitix driver to not fail probing if property enabling
   touch keys functionality is not defined. Support for touch keys was
   added in 6.12 merge window so this issue does not affect users of
   released kernels
 
 - a couple new vendor/device IDs in xpad driver to enable support
   for more hardware.
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Merge tag 'input-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - a fix for Zinitix driver to not fail probing if the property enabling
   touch keys functionality is not defined. Support for touch keys was
   added in 6.12 merge window so this issue does not affect users of
   released kernels

 - a couple new vendor/device IDs in xpad driver to enable support for
   more hardware

* tag 'input-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: zinitix - don't fail if linux,keycodes prop is absent
  Input: xpad - add support for MSI Claw A1M
  Input: xpad - add support for 8BitDo Ultimate 2C Wireless Controller
2024-10-19 10:18:03 -07:00
Linus Torvalds
9197b73fd7 Mashed-up update that I sat on too long:
- fix for multiple slabs created with the same name
 - enable multipage folios
 - theorical fix to also look for opened fids by inode if none
 was found by dentry
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Merge tag '9p-for-6.12-rc4' of https://github.com/martinetd/linux

Pull 9p fixes from Dominique Martinet:
 "Mashed-up update that I sat on too long:

   - fix for multiple slabs created with the same name

   - enable multipage folios

   - theorical fix to also look for opened fids by inode if none was
     found by dentry"

[ Enabling multi-page folios should have been done during the merge
  window, but it's a one-liner, and the actual meat of the enablement
  is in netfs and already in use for other filesystems...  - Linus ]

* tag '9p-for-6.12-rc4' of https://github.com/martinetd/linux:
  9p: Avoid creating multiple slab caches with the same name
  9p: Enable multipage folios
  9p: v9fs_fid_find: also lookup by inode if not found dentry
2024-10-19 08:44:10 -07:00
Linus Torvalds
4e6bd4a33a Rust fixes for v6.12 (2nd)
Toolchain and infrastructure:
 
  - Fix several issues with the 'rustc-option' macro. It includes a
    refactor from Masahiro of three '{cc,rust}-*' macros, which is not
    a fix but avoids repeating the same commands (which would be several
    lines in the case of 'rustc-option').
 
  - Fix conditions for 'CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS'. It
    includes the addition of 'CONFIG_RUSTC_LLVM_VERSION', which is not a
    fix but is needed for the actual fix.
 
 And a trivial grammar fix.
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Merge tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux

Pull rust fixes from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Fix several issues with the 'rustc-option' macro. It includes a
     refactor from Masahiro of three '{cc,rust}-*' macros, which is not
     a fix but avoids repeating the same commands (which would be
     several lines in the case of 'rustc-option').

   - Fix conditions for 'CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS'. It
     includes the addition of 'CONFIG_RUSTC_LLVM_VERSION', which is not
     a fix but is needed for the actual fix.

  And a trivial grammar fix"

* tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux:
  cfi: fix conditions for HAVE_CFI_ICALL_NORMALIZE_INTEGERS
  kbuild: rust: add `CONFIG_RUSTC_LLVM_VERSION`
  kbuild: fix issues with rustc-option
  kbuild: refactor cc-option-yn, cc-disable-warning, rust-option-yn macros
  lib/Kconfig.debug: fix grammar in RUST_BUILD_ASSERT_ALLOW
2024-10-19 08:32:47 -07:00
Jens Axboe
ae6a888a43 io_uring/rw: fix wrong NOWAIT check in io_rw_init_file()
A previous commit improved how !FMODE_NOWAIT is dealt with, but
inadvertently negated a check whilst doing so. This caused -EAGAIN to be
returned from reading files with O_NONBLOCK set. Fix up the check for
REQ_F_SUPPORT_NOWAIT.

Reported-by: Julian Orth <ju.orth@gmail.com>
Link: https://github.com/axboe/liburing/issues/1270
Fixes: f7c9134385 ("io_uring/rw: allow pollable non-blocking attempts for !FMODE_NOWAIT")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-10-19 09:25:45 -06:00
Steven Rostedt
fae4078c28 fgraph: Allocate ret_stack_list with proper size
The ret_stack_list is an array of ret_stack shadow stacks for the function
graph usage. When the first function graph is enabled, all tasks in the
system get a shadow stack. The ret_stack_list is a 32 element array of
pointers to these shadow stacks. It allocates the shadow stack in batches
(32 stacks at a time), assigns them to running tasks, and continues until
all tasks are covered.

When the function graph shadow stack changed from an array of
ftrace_ret_stack structures to an array of longs, the allocation of
ret_stack_list went from allocating an array of 32 elements to just a
block defined by SHADOW_STACK_SIZE. Luckily, that's defined as PAGE_SIZE
and is much more than enough to hold 32 pointers. But it is way overkill
for the amount needed to allocate.

Change the allocation of ret_stack_list back to a kcalloc() of
FTRACE_RETSTACK_ALLOC_SIZE pointers.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20241018215212.23f13f40@rorschach
Fixes: 42675b723b ("function_graph: Convert ret_stack to a series of longs")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2024-10-18 21:57:20 -04:00
Steven Rostedt
2c02f7375e fgraph: Use CPU hotplug mechanism to initialize idle shadow stacks
The function graph infrastructure allocates a shadow stack for every task
when enabled. This includes the idle tasks. The first time the function
graph is invoked, the shadow stacks are created and never freed until the
task exits. This includes the idle tasks.

Only the idle tasks that were for online CPUs had their shadow stacks
created when function graph tracing started. If function graph tracing is
enabled and a CPU comes online, the idle task representing that CPU will
not have its shadow stack created, and all function graph tracing for that
idle task will be silently dropped.

Instead, use the CPU hotplug mechanism to allocate the idle shadow stacks.
This will include idle tasks for CPUs that come online during tracing.

This issue can be reproduced by:

 # cd /sys/kernel/tracing
 # echo 0 > /sys/devices/system/cpu/cpu1/online
 # echo 0 > set_ftrace_pid
 # echo function_graph > current_tracer
 # echo 1 > options/funcgraph-proc
 # echo 1 > /sys/devices/system/cpu/cpu1
 # grep '<idle>' per_cpu/cpu1/trace | head

Before, nothing would show up.

After:
 1)    <idle>-0    |   0.811 us    |                        __enqueue_entity();
 1)    <idle>-0    |   5.626 us    |                      } /* enqueue_entity */
 1)    <idle>-0    |               |                      dl_server_update_idle_time() {
 1)    <idle>-0    |               |                        dl_scaled_delta_exec() {
 1)    <idle>-0    |   0.450 us    |                          arch_scale_cpu_capacity();
 1)    <idle>-0    |   1.242 us    |                        }
 1)    <idle>-0    |   1.908 us    |                      }
 1)    <idle>-0    |               |                      dl_server_start() {
 1)    <idle>-0    |               |                        enqueue_dl_entity() {
 1)    <idle>-0    |               |                          task_contending() {

Note, if tracing stops and restarts, the old way would then initialize
the onlined CPUs.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/20241018214300.6df82178@rorschach
Fixes: 868baf07b1 ("ftrace: Fix memory leak with function graph and cpu hotplug")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2024-10-18 21:56:56 -04:00
Linus Torvalds
3d5ad2d4ec BPF fixes:
- Fix BPF verifier to not affect subreg_def marks in its range
   propagation, from Eduard Zingerman.
 
 - Fix a truncation bug in the BPF verifier's handling of
   coerce_reg_to_size_sx, from Dimitar Kanaliev.
 
 - Fix the BPF verifier's delta propagation between linked
   registers under 32-bit addition, from Daniel Borkmann.
 
 - Fix a NULL pointer dereference in BPF devmap due to missing
   rxq information, from Florian Kauer.
 
 - Fix a memory leak in bpf_core_apply, from Jiri Olsa.
 
 - Fix an UBSAN-reported array-index-out-of-bounds in BTF
   parsing for arrays of nested structs, from Hou Tao.
 
 - Fix build ID fetching where memory areas backing the file
   were created with memfd_secret, from Andrii Nakryiko.
 
 - Fix BPF task iterator tid filtering which was incorrectly
   using pid instead of tid, from Jordan Rome.
 
 - Several fixes for BPF sockmap and BPF sockhash redirection
   in combination with vsocks, from Michal Luczaj.
 
 - Fix riscv BPF JIT and make BPF_CMPXCHG fully ordered,
   from Andrea Parri.
 
 - Fix riscv BPF JIT under CONFIG_CFI_CLANG to prevent the
   possibility of an infinite BPF tailcall, from Pu Lehui.
 
 - Fix a build warning from resolve_btfids that bpf_lsm_key_free
   cannot be resolved, from Thomas Weißschuh.
 
 - Fix a bug in kfunc BTF caching for modules where the wrong
   BTF object was returned, from Toke Høiland-Jørgensen.
 
 - Fix a BPF selftest compilation error in cgroup-related tests
   with musl libc, from Tony Ambardar.
 
 - Several fixes to BPF link info dumps to fill missing fields,
   from Tyrone Wu.
 
 - Add BPF selftests for kfuncs from multiple modules, checking
   that the correct kfuncs are called, from Simon Sundberg.
 
 - Ensure that internal and user-facing bpf_redirect flags
   don't overlap, also from Toke Høiland-Jørgensen.
 
 - Switch to use kvzmalloc to allocate BPF verifier environment,
   from Rik van Riel.
 
 - Use raw_spinlock_t in BPF ringbuf to fix a sleep in atomic
   splat under RT, from Wander Lairson Costa.
 
 Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Daniel Borkmann:

 - Fix BPF verifier to not affect subreg_def marks in its range
   propagation (Eduard Zingerman)

 - Fix a truncation bug in the BPF verifier's handling of
   coerce_reg_to_size_sx (Dimitar Kanaliev)

 - Fix the BPF verifier's delta propagation between linked registers
   under 32-bit addition (Daniel Borkmann)

 - Fix a NULL pointer dereference in BPF devmap due to missing rxq
   information (Florian Kauer)

 - Fix a memory leak in bpf_core_apply (Jiri Olsa)

 - Fix an UBSAN-reported array-index-out-of-bounds in BTF parsing for
   arrays of nested structs (Hou Tao)

 - Fix build ID fetching where memory areas backing the file were
   created with memfd_secret (Andrii Nakryiko)

 - Fix BPF task iterator tid filtering which was incorrectly using pid
   instead of tid (Jordan Rome)

 - Several fixes for BPF sockmap and BPF sockhash redirection in
   combination with vsocks (Michal Luczaj)

 - Fix riscv BPF JIT and make BPF_CMPXCHG fully ordered (Andrea Parri)

 - Fix riscv BPF JIT under CONFIG_CFI_CLANG to prevent the possibility
   of an infinite BPF tailcall (Pu Lehui)

 - Fix a build warning from resolve_btfids that bpf_lsm_key_free cannot
   be resolved (Thomas Weißschuh)

 - Fix a bug in kfunc BTF caching for modules where the wrong BTF object
   was returned (Toke Høiland-Jørgensen)

 - Fix a BPF selftest compilation error in cgroup-related tests with
   musl libc (Tony Ambardar)

 - Several fixes to BPF link info dumps to fill missing fields (Tyrone
   Wu)

 - Add BPF selftests for kfuncs from multiple modules, checking that the
   correct kfuncs are called (Simon Sundberg)

 - Ensure that internal and user-facing bpf_redirect flags don't overlap
   (Toke Høiland-Jørgensen)

 - Switch to use kvzmalloc to allocate BPF verifier environment (Rik van
   Riel)

 - Use raw_spinlock_t in BPF ringbuf to fix a sleep in atomic splat
   under RT (Wander Lairson Costa)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (38 commits)
  lib/buildid: Handle memfd_secret() files in build_id_parse()
  selftests/bpf: Add test case for delta propagation
  bpf: Fix print_reg_state's constant scalar dump
  bpf: Fix incorrect delta propagation between linked registers
  bpf: Properly test iter/task tid filtering
  bpf: Fix iter/task tid filtering
  riscv, bpf: Make BPF_CMPXCHG fully ordered
  bpf, vsock: Drop static vsock_bpf_prot initialization
  vsock: Update msg_count on read_skb()
  vsock: Update rx_bytes on read_skb()
  bpf, sockmap: SK_DROP on attempted redirects of unsupported af_vsock
  selftests/bpf: Add asserts for netfilter link info
  bpf: Fix link info netfilter flags to populate defrag flag
  selftests/bpf: Add test for sign extension in coerce_subreg_to_size_sx()
  selftests/bpf: Add test for truncation after sign extension in coerce_reg_to_size_sx()
  bpf: Fix truncation bug in coerce_reg_to_size_sx()
  selftests/bpf: Assert link info uprobe_multi count & path_size if unset
  bpf: Fix unpopulated path_size when uprobe_multi fields unset
  selftests/bpf: Fix cross-compiling urandom_read
  selftests/bpf: Add test for kfunc module order
  ...
2024-10-18 16:27:14 -07:00
Linus Torvalds
dbafeddb95 linux_kselftest-fixes-6.12-rc4
kselftest fixes for Linux 6.12-rc4
 
 -- fixes test makefile to install tests directory without which
    the test fails with errors.
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Merge tag 'linux_kselftest-fixes-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:

 - fix test makefile to install tests directory without which the test
   fails with errors

* tag 'linux_kselftest-fixes-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftest: hid: add the missing tests directory
2024-10-18 16:11:17 -07:00
Nikita Travkin
2de01e0e57 Input: zinitix - don't fail if linux,keycodes prop is absent
When initially adding the touchkey support, a mistake was made in the
property parsing code. The possible negative errno from
device_property_count_u32() was never checked, which was an oversight
left from converting to it from the of_property as part of the review
fixes.

Re-add the correct handling of the absent property, in which case zero
touchkeys should be assumed, which would disable the feature.

Reported-by: Jakob Hauser <jahau@rocketmail.com>
Tested-by: Jakob Hauser <jahau@rocketmail.com>
Fixes: 075d9b22c8 ("Input: zinitix - add touchkey support")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Tested-by: Yassine Oudjana <y.oudjana@protonmail.com>
Link: https://lore.kernel.org/r/20241004-zinitix-no-keycodes-v2-1-876dc9fea4b6@trvn.ru
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2024-10-18 16:03:04 -07:00