EPT exit qualification bit 6 is used when mode-based execute control
is enabled, and reflects user executable addresses. Rework name to
reflect the intention and add to EPT_VIOLATION_PROT_MASK, which allows
simplifying the return evaluation in
tdx_is_sept_violation_unexpected_pending a pinch.
Rework handling in __vmx_handle_ept_violation to unconditionally clear
EPT_VIOLATION_PROT_USER_EXEC until MBEC is implemented, as suggested by
Sean [1].
Note: Intel SDM Table 29-7 defines bit 6 as:
If the "mode-based execute control" VM-execution control is 0, the
value of this bit is undefined. If that control is 1, this bit is the
logical-AND of bit 10 in the EPT paging-structure entries used to
translate the guest-physical address of the access causing the EPT
violation. In this case, it indicates whether the guest-physical
address was executable for user-mode linear addresses.
[1] https://lore.kernel.org/all/aCJDzU1p_SFNRIJd@google.com/
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Jon Kohler <jon@nutanix.com>
Message-ID: <20251223054806.1611168-2-jon@nutanix.com>
Tested-by: David Riley <d.riley@proxmox.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This helps avoiding more embarrassment to this maintainer, but also
will catch mistakes more easily for others.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Fix and optimize IRQ window inhibit handling for AVIC (the tracking needs to
be per-vCPU, e.g. so that KVM doesn't prematurely re-enable AVIC if multiple
vCPUs have to-be-injected IRQs).
- Fix an undefined behavior warning where a crafty userspace can read the
"avic" module param before it's fully initialized.
- Fix a (likely benign) bug in the "OS-visible workarounds" handling, where
KVM could clobber state when enabling virtualization on multiple CPUs in
parallel, and clean up and optimize the code.
- Drop a WARN in KVM_MEMORY_ENCRYPT_REG_REGION where KVM complains about a
"too large" size based purely on user input, and clean up and harden the
related pinning code.
- Disallow synchronizing a VMSA of an already-launched/encrypted vCPU, as
doing so for an SNP guest will trigger an RMP violation #PF and crash the
host.
- Protect all of sev_mem_enc_register_region() with kvm->lock to ensure
sev_guest() is stable for the entire of the function.
- Lock all vCPUs when synchronizing VMSAs for SNP guests to ensure the VMSA
page isn't actively being used.
- Overhaul KVM's APIs for detecting SEV+ guests so that VM-scoped queries are
required to hold kvm->lock (KVM has had multiple bugs due "is SEV?" checks
becoming stale), enforced by lockdep. Add and use vCPU-scoped APIs when
possible/appropriate, as all checks that originate from a vCPU are
guaranteed to be stable.
- Convert a pile of kvm->lock SEV code to guard().
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAmnZK4wACgkQOlYIJqCj
N/2uOQ/+LzGQD7myCn47rUhiMo/aY3qjrS+u6PSuFeEMFyaATiWpf/s50hIMHh+/
VCRAptKgL0PBV/RbOqhZdx4Zn/Yb/NNBwraqc7xQgMOlQwFedOetuFtRveJ4z6Af
8ycwMxYYtz6SbaT+R3AdK51Nb8S2ZRpd082CiaLgChVcdodkeFtS5KVBqrlBGB21
EKFbW+QXMHrpmGbgZ8YWMrL5UCSmJFG8ZztcncNfsLS6WxbUjdo/MEiLEDIsrXZd
oGViwmnY7hcJ5ClcF8UMPtXHHP1+EOk6BKAsmYguG3qUxbX+EEbymb8o16k+h6iw
ybUZWF7cq44Pl1FModTFAB5LQPg6z6XNhjZ8L+0kjAI05lvszf3QDtezQ+BF24tW
S18x6yCIpdEJ3VxM4r5Yqf10CRbxMtHKU6EUjL7C4KNNYOz2sX+Tqgi/uHtbgzUJ
zPG9faY5M3hMjfj5tOCpy/fAEF3fD1mg4GE8pfXZa8d/ppqI4hU0ASpFzw/d4LnH
PJSaeJhmmEIdRj+RtIGIRSZ9flHM61/+clKngaoR+c/mPQPnDbapivl2kgKWbVJ4
47c44pYQLTWI01nuwcEILCEj8D1mABJygPjNoO79b2mitmYazMnO42mV3lI5oP0c
QyzX7sSed6ImIRn8xadfE+tIz3ji9r/ak+ekZvdNiqiNEoi2YG8=
=AjgE
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-svm-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM SVM changes for 7.1
- Fix and optimize IRQ window inhibit handling for AVIC (the tracking needs to
be per-vCPU, e.g. so that KVM doesn't prematurely re-enable AVIC if multiple
vCPUs have to-be-injected IRQs).
- Fix an undefined behavior warning where a crafty userspace can read the
"avic" module param before it's fully initialized.
- Fix a (likely benign) bug in the "OS-visible workarounds" handling, where
KVM could clobber state when enabling virtualization on multiple CPUs in
parallel, and clean up and optimize the code.
- Drop a WARN in KVM_MEMORY_ENCRYPT_REG_REGION where KVM complains about a
"too large" size based purely on user input, and clean up and harden the
related pinning code.
- Disallow synchronizing a VMSA of an already-launched/encrypted vCPU, as
doing so for an SNP guest will trigger an RMP violation #PF and crash the
host.
- Protect all of sev_mem_enc_register_region() with kvm->lock to ensure
sev_guest() is stable for the entire of the function.
- Lock all vCPUs when synchronizing VMSAs for SNP guests to ensure the VMSA
page isn't actively being used.
- Overhaul KVM's APIs for detecting SEV+ guests so that VM-scoped queries are
required to hold kvm->lock (KVM has had multiple bugs due "is SEV?" checks
becoming stale), enforced by lockdep. Add and use vCPU-scoped APIs when
possible/appropriate, as all checks that originate from a vCPU are
guaranteed to be stable.
- Convert a pile of kvm->lock SEV code to guard().
Move _only_ VMXON+VMXOFF and EFER.SVME toggling out of KVM (versus all of VMX
and SVM enabling) out of KVM and into the core kernel so that non-KVM TDX
enabling, e.g. for trusted I/O, can make SEAMCALLs without needing to ensure
KVM is fully loaded.
TDX isn't a hypervisor, and isn't trying to be a hypervisor. Specifically, TDX
should _never_ have it's own VMCSes (that are visible to the host; the
TDX-Module has it's own VMCSes to do SEAMCALL/SEAMRET), and so there is simply
no reason to move that functionality out of KVM.
With that out of the way, dealing with VMXON/VMXOFF and EFER.SVME is a fairly
simple refcounting game.
-----BEGIN PGP SIGNATURE-----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=SuxR
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-vmxon-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 VMXON and EFER.SVME extraction for 7.1
Move _only_ VMXON+VMXOFF and EFER.SVME toggling out of KVM (versus all of VMX
and SVM enabling) out of KVM and into the core kernel so that non-KVM TDX
enabling, e.g. for trusted I/O, can make SEAMCALLs without needing to ensure
KVM is fully loaded.
TIO isn't a hypervisor, and isn't trying to be a hypervisor. Specifically, TIO
should _never_ have it's own VMCSes (that are visible to the host; the
TDX-Module has it's own VMCSes to do SEAMCALL/SEAMRET), and so there is simply
no reason to move that functionality out of KVM.
With that out of the way, dealing with VMXON/VMXOFF and EFER.SVME is a fairly
simple refcounting game.
- To minimize the probability of corrupting guest state, defer KVM's
non-architectural delivery of exception payloads (e.g. CR2 and DR6) until
consumption of the payload is imminent, and force delivery of the payload
in all paths where userspace saves relevant state.
- Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT to fix a
bug where L2's CR2 can get corrupted after a save/restore, e.g. if the VM
is migrated while L2 is faulting in memory.
- Fix a class of nSVM bugs where some fields written by the CPU are not
synchronized from vmcb02 to cached vmcb12 after VMRUN, and so are not
up-to-date when saved by KVM_GET_NESTED_STATE.
- Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE and
KVM_SET_{S}REGS could cause vmcb02 to be incorrectly initialized after
save+restore.
- Add a variety of missing nSVM consistency checks.
- Fix several bugs where KVM failed to correctly update VMCB fields on nested
#VMEXIT.
- Fix several bugs where KVM failed to correctly synthesize #UD or #GP for
SVM-related instructions.
- Add support for save+restore of virtualized LBRs (on SVM).
- Refactor various helpers and macros to improve clarity and (hopefully) make
the code easier to maintain.
- Aggressively sanitize fields when copying from vmcb12 to guard against
unintentionally allowing L1 to utilize yet-to-be-defined features.
- Fix several bugs where KVM botched rAX legality checks when emulating SVM
instructions. Note, KVM is still flawed in that KVM doesn't address size
prefix overrides for 64-bit guests; this should probably be documented as a
KVM erratum.
- Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails instead of
somewhat arbitrarily synthesizing #GP (i.e. don't bastardize AMD's already-
sketchy behavior of generating #GP if for "unsupported" addresses).
- Cache all used vmcb12 fields to further harden against TOCTOU bugs.
-----BEGIN PGP SIGNATURE-----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=ys7N
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-nested-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM nested SVM changes for 7.1 (with one common x86 fix)
- To minimize the probability of corrupting guest state, defer KVM's
non-architectural delivery of exception payloads (e.g. CR2 and DR6) until
consumption of the payload is imminent, and force delivery of the payload
in all paths where userspace saves relevant state.
- Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT to fix a
bug where L2's CR2 can get corrupted after a save/restore, e.g. if the VM
is migrated while L2 is faulting in memory.
- Fix a class of nSVM bugs where some fields written by the CPU are not
synchronized from vmcb02 to cached vmcb12 after VMRUN, and so are not
up-to-date when saved by KVM_GET_NESTED_STATE.
- Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE and
KVM_SET_{S}REGS could cause vmcb02 to be incorrectly initialized after
save+restore.
- Add a variety of missing nSVM consistency checks.
- Fix several bugs where KVM failed to correctly update VMCB fields on nested
#VMEXIT.
- Fix several bugs where KVM failed to correctly synthesize #UD or #GP for
SVM-related instructions.
- Add support for save+restore of virtualized LBRs (on SVM).
- Refactor various helpers and macros to improve clarity and (hopefully) make
the code easier to maintain.
- Aggressively sanitize fields when copying from vmcb12 to guard against
unintentionally allowing L1 to utilize yet-to-be-defined features.
- Fix several bugs where KVM botched rAX legality checks when emulating SVM
instructions. Note, KVM is still flawed in that KVM doesn't address size
prefix overrides for 64-bit guests; this should probably be documented as a
KVM erratum.
- Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails instead of
somewhat arbitrarily synthesizing #GP (i.e. don't bastardize AMD's already-
sketchy behavior of generating #GP if for "unsupported" addresses).
- Cache all used vmcb12 fields to further harden against TOCTOU bugs.
- Fix an undefined behavior warning where a crafty userspace can read kvm.ko's
nx_huge_pages before it's fully initialized.
- Don't zero-allocate page tables that are used for splitting hugepages in the
TDP MMU, as KVM is guaranteed to set all SPTEs in the page table and thus
write all bytes.
- Bail early when trying to unsync 4KiB mappings if the target gfn can be
mapped with a 2MiB hugepage, to avoid the gfn hash lookup.
-----BEGIN PGP SIGNATURE-----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=y0wF
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-mmu-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 MMU changes for 7.1
- Fix an undefined behavior warning where a crafty userspace can read kvm.ko's
nx_huge_pages before it's fully initialized.
- Don't zero-allocate page tables that are used for splitting hugepages in the
TDP MMU, as KVM is guaranteed to set all SPTEs in the page table and thus
write all bytes.
- Bail early when trying to unsync 4KiB mappings if the target gfn can be
mapped with a 2MiB hugepage, to avoid the gfn hash lookup.
- Drop obsolete (largely ignored by hardwre) branch hint prefixes from the
VMX instruction macros, as saving a byte of code per instruction provides
more benefits than the (mostly) superfluous prefixes.
- Use ASM_INPUT_RM() in __vmcs_writel() to coerce clang into using a register
input when appropriate.
- Drop unnecessary parentheses in cpu_has_load_cet_ctrl() so as not to suggest
that "return (x & y);" is KVM's preferred style.
-----BEGIN PGP SIGNATURE-----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=8+qL
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-vmx-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM VMX changes for 7.1
- Drop obsolete (largely ignored by hardwre) branch hint prefixes from the
VMX instruction macros, as saving a byte of code per instruction provides
more benefits than the (mostly) superfluous prefixes.
- Use ASM_INPUT_RM() in __vmcs_writel() to coerce clang into using a register
input when appropriate.
- Drop unnecessary parentheses in cpu_has_load_cet_ctrl() so as not to suggest
that "return (x & y);" is KVM's preferred style.
Copy single-chunk MMIO write values into a persistent (per-fragment) field to
fix use-after-free stack bugs due to KVM dereferencing a stack pointer after an
exit to userspace.
Clean up and comment the emulated MMIO code to try to make it easier to
maintain (not necessarily "easy", but "easier").
-----BEGIN PGP SIGNATURE-----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=Qyhh
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-mmio-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 emulated MMIO changes for 7.1
Copy single-chunk MMIO write values into a persistent (per-fragment) field to
fix use-after-free stack bugs due to KVM dereferencing a stack pointer after an
exit to userspace.
Clean up and comment the emulated MMIO code to try to make it easier to
maintain (not necessarily "easy", but "easier").
- Add support for Hygon CPUs in KVM selftests.
- Fix a bug in the MSR test where it would get false failures on AMD/Hygon
CPUs with exactly one of RDPID or RDTSCP.
- Add an MADV_COLLAPSE testcase for guest_memfd as a regression test for a
bug where the kernel would attempt to collapse guest_memfd folios against
KVM's will.
-----BEGIN PGP SIGNATURE-----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=aySp
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-selftests-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM selftests changes for 7.1
- Add support for Hygon CPUs in KVM selftests.
- Fix a bug in the MSR test where it would get false failures on AMD/Hygon
CPUs with exactly one of RDPID or RDTSCP.
- Add an MADV_COLLAPSE testcase for guest_memfd as a regression test for a
bug where the kernel would attempt to collapse guest_memfd folios against
KVM's will.
- Advertise support for AVX512 Bit Matrix Multiply (BMM) when it's present in
hardware (no additional emulation/virtualization required).
- Immediately fail the build if a required #define is missing in one of KVM's
headers that is included multiple times.
- Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected exception,
mostly to prevent syzkaller from abusing the uAPI to trigger WARNs, but also
because it can help prevent userspace from unintentionally crashing the VM.
- Exempt SMM from CPUID faulting on Intel, as per the spec.
- Misc hardening and cleanup changes.
-----BEGIN PGP SIGNATURE-----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=ZvDQ
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-misc-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 misc changes for 7.1
- Advertise support for AVX512 Bit Matrix Multiply (BMM) when it's present in
hardware (no additional emulation/virtualization required).
- Immediately fail the build if a required #define is missing in one of KVM's
headers that is included multiple times.
- Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected exception,
mostly to prevent syzkaller from abusing the uAPI to trigger WARNs, but also
because it can help prevent userspace from unintentionally crashing the VM.
- Exempt SMM from CPUID faulting on Intel, as per the spec.
- Misc hardening and cleanup changes.
Don't mark guest_memfd folios as accessed, as guest_memfd doesn't support
reclaim, the memory is unevictable, and there is no storage to write back to.
-----BEGIN PGP SIGNATURE-----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=21/x
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-gmem-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM guest_memfd changes for 7.1
Don't mark guest_memfd folios as accessed, as guest_memfd doesn't support
reclaim, the memory is unevictable, and there is no storage to write back to.
* New features:
- Add support for tracing in the standalone EL2 hypervisor code,
which should help both debugging and performance analysis.
This comes with a full infrastructure for 'remote' trace buffers
that can be exposed by non-kernel entities such as firmware.
- Add support for GICv5 Per Processor Interrupts (PPIs), as the
starting point for supporting the new GIC architecture in KVM.
- Finally add support for pKVM protected guests, with anonymous
memory being used as a backing store. About time!
* Improvements and bug fixes:
- Rework the dreaded user_mem_abort() function to make it more
maintainable, reducing the amount of state being exposed to
the various helpers and rendering a substantial amount of
state immutable.
- Expand the Stage-2 page table dumper to support NV shadow
page tables on a per-VM basis.
- Tidy up the pKVM PSCI proxy code to be slightly less hard
to follow.
- Fix both SPE and TRBE in non-VHE configurations so that they
do not generate spurious, out of context table walks that
ultimately lead to very bad HW lockups.
- A small set of patches fixing the Stage-2 MMU freeing in error
cases.
- Tighten-up accepted SMC immediate value to be only #0 for host
SMCCC calls.
- The usual cleanups and other selftest churn.
-----BEGIN PGP SIGNATURE-----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=/SuQ
-----END PGP SIGNATURE-----
Merge tag 'kvmarm-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 7.1
* New features:
- Add support for tracing in the standalone EL2 hypervisor code,
which should help both debugging and performance analysis.
This comes with a full infrastructure for 'remote' trace buffers
that can be exposed by non-kernel entities such as firmware.
- Add support for GICv5 Per Processor Interrupts (PPIs), as the
starting point for supporting the new GIC architecture in KVM.
- Finally add support for pKVM protected guests, with anonymous
memory being used as a backing store. About time!
* Improvements and bug fixes:
- Rework the dreaded user_mem_abort() function to make it more
maintainable, reducing the amount of state being exposed to
the various helpers and rendering a substantial amount of
state immutable.
- Expand the Stage-2 page table dumper to support NV shadow
page tables on a per-VM basis.
- Tidy up the pKVM PSCI proxy code to be slightly less hard
to follow.
- Fix both SPE and TRBE in non-VHE configurations so that they
do not generate spurious, out of context table walks that
ultimately lead to very bad HW lockups.
- A small set of patches fixing the Stage-2 MMU freeing in error
cases.
- Tighten-up accepted SMC immediate value to be only #0 for host
SMCCC calls.
- The usual cleanups and other selftest churn.
1. Use CSR_CRMD_PLV in kvm_arch_vcpu_in_kernel().
2. Let vcpu_is_preempted() a macro & some enhanments.
3. Add DMSINTC irqchip in kernel support.
4. Add KVM PMU test cases for tools/selftests.
-----BEGIN PGP SIGNATURE-----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=zbdN
-----END PGP SIGNATURE-----
Merge tag 'loongarch-kvm-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD
LoongArch KVM changes for v7.1
1. Use CSR_CRMD_PLV in kvm_arch_vcpu_in_kernel().
2. Let vcpu_is_preempted() a macro & some enhanments.
3. Add DMSINTC irqchip in kernel support.
4. Add KVM PMU test cases for tools/selftests.
- Fix steal time shared memory alignment checks
- Fix vector context allocation leak
- Fix array out-of-bounds in pmu_ctr_read() and pmu_fw_ctr_read_hi()
- Fix double-free of sdata in kvm_pmu_clear_snapshot_area()
- Fix integer overflow in kvm_pmu_validate_counter_mask()
- Fix shift-out-of-bounds in make_xfence_request()
- Fix lost write protection on huge pages during dirty logging
- Split huge pages during fault handling for dirty logging
- Skip CSR restore if VCPU is reloaded on the same core
- Implement kvm_arch_has_default_irqchip() for KVM selftests
- Factored-out ISA checks into separate sources
- Added hideleg to struct kvm_vcpu_config
- Factored-out VCPU config into separate sources
- Support configuration of per-VM HGATP mode from KVM user space
-----BEGIN PGP SIGNATURE-----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=LbnE
-----END PGP SIGNATURE-----
Merge tag 'kvm-riscv-7.1-1' of https://github.com/kvm-riscv/linux into HEAD
KVM/riscv changes for 7.1
- Fix steal time shared memory alignment checks
- Fix vector context allocation leak
- Fix array out-of-bounds in pmu_ctr_read() and pmu_fw_ctr_read_hi()
- Fix double-free of sdata in kvm_pmu_clear_snapshot_area()
- Fix integer overflow in kvm_pmu_validate_counter_mask()
- Fix shift-out-of-bounds in make_xfence_request()
- Fix lost write protection on huge pages during dirty logging
- Split huge pages during fault handling for dirty logging
- Skip CSR restore if VCPU is reloaded on the same core
- Implement kvm_arch_has_default_irqchip() for KVM selftests
- Factored-out ISA checks into separate sources
- Added hideleg to struct kvm_vcpu_config
- Factored-out VCPU config into separate sources
- Support configuration of per-VM HGATP mode from KVM user space
- Fix incomplete activation of multiple inactive works when unplugging a
pool_workqueue, where the pending_pwqs list wasn't being updated for
subsequent works.
-----BEGIN PGP SIGNATURE-----
iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCadvRzg4cdGpAa2VybmVs
Lm9yZwAKCRCxYfJx3gVYGeLdAP9SZN3b4QRE79fnP/1dzf2RR/XWlFq7x49Wv1nP
mmpwjQEAx/B6YabLNp98bdxaoygUkdz3zBDnL7oaWx/G0p9T/QA=
=80oo
-----END PGP SIGNATURE-----
Merge tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
"This is a fix for a stall which triggers on ordered workqueues when
there are multiple inactive work items during workqueue property
changes through sysfs, which doesn't happen that frequently.
While really late, the fix is very low risk as it just repeats an
operation which is already being performed:
- Fix incomplete activation of multiple inactive works when
unplugging a pool_workqueue, where the pending_pwqs list
wasn't being updated for subsequent works"
* tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Add pool_workqueue to pending_pwqs list when unplugging multiple inactive works
- Invert the inverted fastpath decision in check_tick_dependency(), which
prevents NOHZ full to stop the tick. That's a regression introduced in
the 7.0 merge window.
- Prevent a unpriviledged DoS in the clockevents code, where user space
can starve the timer interrupt by arming a timerfd or posix interval
timer in a tight loop with an absolute expiry time in the past. The
fix turned out to be incomplete and was was amended yesterday to make
it work on some 20 years old AMD machines as well. All issues with it
have been confirmed to be resolved by various reporters.
-----BEGIN PGP SIGNATURE-----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=cnPC
-----END PGP SIGNATURE-----
Merge tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two fixes for the time/timers subsystem:
- Invert the inverted fastpath decision in check_tick_dependency(),
which prevents NOHZ full to stop the tick. That's a regression
introduced in the 7.0 merge window.
- Prevent a unpriviledged DoS in the clockevents code, where user
space can starve the timer interrupt by arming a timerfd or posix
interval timer in a tight loop with an absolute expiry time in the
past. The fix turned out to be incomplete and was was amended
yesterday to make it work on some 20 years old AMD machines as
well. All issues with it have been confirmed to be resolved by
various reporters"
* tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clockevents: Prevent timer interrupt starvation
tick/nohz: Fix inverted return value in check_tick_dependency() fast path
The check for the minimum receive buffer size did not take the
tag size into account during decryption. Fix this by adding the
required extra length.
Reported-by: syzbot+aa11561819dc42ebbc7c@syzkaller.appspotmail.com
Reported-by: Daniel Pouzzner <douzzer@mega.nu>
Fixes: d887c52d6a ("crypto: algif_aead - overhaul memory management")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Leo reports an out-of-bounds access when parsing a certificate with
empty Basic Constraints or Key Usage extension because the first byte of
the extension is read before checking its length. Fix it.
The bug can be triggered by an unprivileged user by submitting a
specially crafted certificate to the kernel through the keyrings(7) API.
Leo has demonstrated this with a proof-of-concept program responsibly
disclosed off-list.
Fixes: 30eae2b037 ("KEYS: X.509: Parse Basic Constraints for CA")
Fixes: 567671281a ("KEYS: X.509: Parse Key Usage")
Reported-by: Leo Lin <leo@depthfirst.com> # off-list
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Ignat Korchagin <ignat@linux.win>
Cc: stable@vger.kernel.org # v6.4+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When page reassignment was added to af_alg_pull_tsgl the original
loop wasn't updated so it may try to reassign one more page than
necessary.
Add the check to the reassignment so that this does not happen.
Also update the comment which still refers to the obsolete offset
argument.
Reported-by: syzbot+d23888375c2737c17ba5@syzkaller.appspotmail.com
Fixes: e870456d8e ("crypto: algif_skcipher - overhaul memory management")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
imx: set dma_slave_config to 0 and avoid uninitialized fields
-----BEGIN PGP SIGNATURE-----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=sqdX
-----END PGP SIGNATURE-----
Merge tag 'i2c-for-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
- imx: set dma_slave_config to 0 and avoid uninitialized fields
* tag 'i2c-for-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: zero-initialize dma_slave_config for eDMA
A couple of changes here, one update to MAINTAINERS for the AMD
controller and a chnage from Pei Xiao which in spite of the changelog is
actually a fix - previously the zynq-qspi driver leaked a clock enable
for every flash operation it did which isn't good, these extra enables
were removed when doing the enable cleanup which are probably a good
idea anyway.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmnan/YACgkQJNaLcl1U
h9BQLQf9FyBF84+tdZmpjbpo4AUFPkoViQYJH5u8cjkyek+Nsloy3uPtrsJVU0br
94+ImyTmJwaQyLQXmsm05K0GJ1ieo36JlGQNCoLYjlSSSgOU3CUkaIz5Y7QwpCF5
CGnuMErhl4EqhEV/T47Y4ehcrd8NOgoDMXMuThXcIYTN02W7C+rqOELDJ+bUOiWB
c1SDyWYDv+xsK2eqxFHi8u/P3/z+Jth5poX7qeKHeNM1GF40+2/zGTTsqlHC/g9A
GSaSnoPNCgproko5pLQqabvLA444FbaMjUJskv1qvpXJt1cex8e/RbBOe4JGHaWI
z27Bu0jaiGW+B9OT9JTkPfbeTWTQRA==
=PqQH
-----END PGP SIGNATURE-----
Merge tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of changes here, one update to MAINTAINERS for the AMD
controller and a chnage from Pei Xiao which in spite of the changelog
is actually a fix - previously the zynq-qspi driver leaked a clock
enable for every flash operation it did which isn't good, these extra
enables were removed when doing the enable cleanup which are probably
a good idea anyway"
* tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
MAINTAINERS: Update AMD SPI driver maintainers
spi: zynq-qspi: Simplify clock handling with devm_clk_get_enabled()
One last fix for v7.0, the BD72720 incorrectly described which DCDC is
tied to the LDO for it's LDON-HEAD mode which automates using the DCDC
to more efficiently drop a supply for delivery via the LDO.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmnanvQACgkQJNaLcl1U
h9AWWgf9HlWXVqG7M/tFqKoa1Xyza2EkUiyQWNW1dkiXGipxOg+MOa/yeFtyE6gD
RClIkujt4Tt9dwI91FJ+HfWJ8O+Ux1XKRzCxsAe01gyhf68I4hQ2tl35yVzkuuyl
VXdLHlek1dVGNl94IZQDPHYeICrvGCnk/OC7nf+V8bZU1YgfJTMYvNHrArPy2+zH
SY4iZcJcR+vJwgWnZHeBTwzWPCWurYYz+XAEj7RseAJKqE8G3Idlqd/yIupM5mbo
MhWnl1fP8xjv0tq6xhrwXPowxUt08OU9kARg+Siqy1kKN81tb0uocofUHAVGtBel
y14mFWeRbYwh19yAG72guXSfUfyudw==
=e5bj
-----END PGP SIGNATURE-----
Merge tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One last fix for v7.0, the BD72720 incorrectly described which DCDC is
tied to the LDO for its LDON-HEAD mode which automates using the DCDC
to more efficiently drop a supply for delivery via the LDO"
* tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: bd71828-regulator.c: Fix LDON-HEAD mode
* KVM: s390: vsie: Fix races with partial gmap invalidations
x86:
* KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
-----BEGIN PGP SIGNATURE-----
iQFIBAABCgAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmnaOrgUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroPTOwf8DW6BXYgHdDOWiiQQETD+D/JWbceG
9fKMdNjt48It3hKWc9oJ2eZU2avRHf7d8hAIUIhOeiUbeVf4QrLUfQXzP9j/9P+T
vRpMlDf5Ampv3m8LxTBGESgwrlRHtWDGUFsE+CcVAIWEQfCsXnbwkeo3L9aCLTgA
ekrnHqsx+Oh/n2+siEp0Nz0n8gT0hCtbqAqJlVcuHpJvzRzeDvcnukvHxjIydR65
uIFY5dahzheGqbPhplGKKAdPCHD+/S6QB+ShqKrT92zeZvhPZrt1XHV4Bt/sKSkP
9uAeuJ+JtbZvMG7n8fCg5ebwqJrw15uddZcV8l3qIuxHzyZ/XzKYhQm4oA==
=7zjP
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"s390:
- vsie: Fix races with partial gmap invalidations
x86:
- Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: s390: vsie: Fix races with partial gmap invalidations
KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
- tracing/probe: reject non-closed empty immediate strings
Fixed a buffer index underflow bug that occurred when passing an
non-closed empty immediate string to the probe event.
-----BEGIN PGP SIGNATURE-----
iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmnaJr8bHG1hc2FtaS5o
aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8b4PcH/29I02lnjYf4IJ6oiANa
K5+RU+Xq0z+Tn079GapHI9vmF8d9M89bI76fqKAVBGHosk+QTdYPLwupbowY72Fq
5uZPpkMXD+cvNJz0qGEq2WOPeB+VGxq8zR/lnZjhZLupJP0DfBp6SpXS0lFx4d0Q
x+bw6keG7Guq0ocq2mFNWPo2U8bxlh78UrX+pYoIHyjeO+LVNC7X7Ld3aRDebMck
uDnS5oLNMojd4Vi5WYuP1GzGzIUJ0cXDDXnSVqHP5zdt7VV83eZNlfWOKe1YyHEq
FoVTrb3dRFFWn2EdXOJB+DjQXWZeZtUsfJTxWm4UgPgV1DmLmBFurfB8Kk0JmX7S
0XU=
=vHwk
-----END PGP SIGNATURE-----
Merge tag 'probes-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing probe fix from Masami Hiramatsu:
"Reject non-closed empty immediate strings
Fix a buffer index underflow bug that occurred when passing an
non-closed empty immediate string to the probe event"
* tag 'probes-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probe: reject non-closed empty immediate strings
Here is a single USB fix for a reported regression in a recent USB typec
patch for 7.0-final. Sorry for the late submission, but it does fix a
problem that people have been seeing with 7.0-rc7 and the stable kernels
(due to a backported fix from there.)
This has been in linux-next this week with no reported issues, and the
reporter (Takashi), has said it resolves the problem they were seeing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCadofdQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ynZ2QCfURKY6dXrKRPZT5L5GXa+wMNKdlMAnRz+9K0L
NEuwv8+EEEDmXKYmngTM
=ZiC/
-----END PGP SIGNATURE-----
Merge tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB fix for a reported regression in a recent USB
typec patch for 7.0-final. Sorry for the late submission, but it does
fix a problem that people have been seeing with 7.0-rc7 and the stable
kernels (due to a backported fix from there.)
This has been in linux-next this week with no reported issues, and the
reporter (Takashi), has said it resolves the problem they were seeing"
* tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: skip connector validation before init
- a fix for circular locking dependency in uinput
- a fix for potential corruption of uinput event queue
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQST2eWILY88ieB2DOtAj56VGEWXnAUCadnMIgAKCRBAj56VGEWX
nIq2AP9KokKsXT2JwF6E/V9/eQiCXUija5lVu0eUUmjc5CpbvwEA8OTkbCgkHt62
Vux7F+drj4w5p13Fxj0+pgztZW1pfQc=
=KHyc
-----END PGP SIGNATURE-----
Merge tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"Two fixes for force feedback handling in uinput driver:
- fix circular locking dependency in uinput
- fix potential corruption of uinput event queue"
* tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - take event lock when submitting FF request "event"
Input: uinput - fix circular locking dependency with ff-core
Fix one more gmap-rewrite issue: races with partial gmap invalidations.
-----BEGIN PGP SIGNATURE-----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=UmKD
-----END PGP SIGNATURE-----
Merge tag 'kvm-s390-master-7.0-4' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: One very last second fix
Fix one more gmap-rewrite issue: races with partial gmap invalidations.
Declare flexible arrays in uAPI structures using __DECLARE_FLEX_ARRAY() so
that KVM's uAPI headers can be included in C++ projects.
-----BEGIN PGP SIGNATURE-----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=VJsI
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-fixes-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 fixes for 7.1
Declare flexible arrays in uAPI structures using __DECLARE_FLEX_ARRAY() so
that KVM's uAPI headers can be included in C++ projects.
Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above
-----BEGIN PGP SIGNATURE-----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=5/Ct
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above"
* tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
riscv: ptrace: cfi: expand "SS" references to "shadow stack" in uapi headers
prctl: rename branch landing pad implementation functions to be more explicit
riscv: ptrace: expand "LP" references to "branch landing pads" in uapi headers
riscv: cfi: clear CFI lock status in start_thread()
riscv: ptrace: cfi: fix "PRACE" typo in uapi header
xe:
- Fix HW engine idleness unit conversion
i915:
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
vc4:
- runtime pm reference fix
- memory leak fixes
- locking fix
ethosu:
- make ARM only
-----BEGIN PGP SIGNATURE-----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=jot2
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2026-04-11' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Last set of fixes, a few vc4, and i915, one xe and one ethosu Kconfig
fix.
xe:
- Fix HW engine idleness unit conversion
i915:
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
vc4:
- runtime pm reference fix
- memory leak fixes
- locking fix
ethosu:
- make ARM only"
* tag 'drm-fixes-2026-04-11' of https://gitlab.freedesktop.org/drm/kernel:
drm/i915/gem: Drop check for changed VM in EXECBUF
drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat
drm/xe: Fix bug in idledly unit conversion
drm/i915/psr: Do not use pipe_src as borders for SU area
accel: ethosu: Add hardware dependency hint
drm/vc4: Protect madv read in vc4_gem_object_mmap() with madv_lock
drm/vc4: Fix a memory leak in hang state error path
drm/vc4: Fix memory leak of BO array in hang state
drm/vc4: Release runtime PM reference after binding V3D
- Drop check for changed VM in EXECBUF
- Fix refcount underflow race in intel_engine_park_heartbeat
- Do not use pipe_src as borders for SU area in PSR
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patch.msgid.link/add6fPHRC7Bc8Uri@jlahtine-mobl
Calvin reported an odd NMI watchdog lockup which claims that the CPU locked
up in user space. He provided a reproducer, which sets up a timerfd based
timer and then rearms it in a loop with an absolute expiry time of 1ns.
As the expiry time is in the past, the timer ends up as the first expiring
timer in the per CPU hrtimer base and the clockevent device is programmed
with the minimum delta value. If the machine is fast enough, this ends up
in a endless loop of programming the delta value to the minimum value
defined by the clock event device, before the timer interrupt can fire,
which starves the interrupt and consequently triggers the lockup detector
because the hrtimer callback of the lockup mechanism is never invoked.
As a first step to prevent this, avoid reprogramming the clock event device
when:
- a forced minimum delta event is pending
- the new expiry delta is less then or equal to the minimum delta
Thanks to Calvin for providing the reproducer and to Borislav for testing
and providing data from his Zen5 machine.
The problem is not limited to Zen5, but depending on the underlying
clock event device (e.g. TSC deadline timer on Intel) and the CPU speed
not necessarily observable.
This change serves only as the last resort and further changes will be made
to prevent this scenario earlier in the call chain as far as possible.
[ tglx: Updated to restore the old behaviour vs. !force and delta <= 0 and
fixed up the tick-broadcast handlers as pointed out by Borislav ]
Fixes: d316c57ff6 ("[PATCH] clockevents: add core functionality")
Reported-by: Calvin Owens <calvin@wbinvd.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Calvin Owens <calvin@wbinvd.org>
Tested-by: Borislav Petkov <bp@alien8.de>
Link: https://lore.kernel.org/lkml/acMe-QZUel-bBYUh@mozart.vkv.me/
Link: https://patch.msgid.link/20260407083247.562657657@kernel.org
Please consider pulling these changes from the signed vfs-7.0-rc8.fixes tag.
Thanks!
Christian
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCadjZCgAKCRCRxhvAZXjc
om/TAQDsAIxYiJ4hR7rNrKuyL+FP7kuN8WX9DmjU+45Pt/SZNwEA2pSH0y7osa2+
xRGkN0pPQTu6JIlx0rCXlY9PYnXCPQg=
=RHx5
-----END PGP SIGNATURE-----
Merge tag 'vfs-7.0-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"The kernfs rbtree is keyed by (hash, ns, name) where the hash
is seeded with the raw namespace pointer via init_name_hash(ns).
The resulting hash values are exposed to userspace through
readdir seek positions, and the pointer-based ordering in
kernfs_name_compare() is observable through entry order.
Switch from raw pointers to ns_common::ns_id for both hashing
and comparison.
A preparatory commit first replaces all const void * namespace
parameters with const struct ns_common * throughout kernfs, sysfs,
and kobject so the code can access ns->ns_id. Also compare the
ns_id when hashes match in the rbtree to handle crafted collisions.
Also fix eventpoll RCU grace period issue and a cachefiles refcount
problem"
* tag 'vfs-7.0-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
kernfs: make directory seek namespace-aware
kernfs: use namespace id instead of pointer for hashing and comparison
kernfs: pass struct ns_common instead of const void * for namespace tags
eventpoll: defer struct eventpoll free to RCU grace period
cachefiles: fix incorrect dentry refcount in cachefiles_cull()
Fix a memory allocation issue that could corrupt output values or SEGV
Fix a perf initilization issue that could exit on some HW + kernels.
Minor fixes.
-----BEGIN PGP SIGNATURE-----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=xJLy
-----END PGP SIGNATURE-----
Merge tag 'turbostat-fixes-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat fixes from Len Brown:
- Fix a memory allocation issue that could corrupt output values or
SEGV
- Fix a perf initilization issue that could exit on some HW + kernels
- Minor fixes
* tag 'turbostat-fixes-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: Allow execution to continue after perf_l2_init() failure
tools/power turbostat: Fix delimiter bug in print functions
tools/power turbostat: Fix --show/--hide for individual cpuidle counters
tools/power turbostat: Fix incorrect format variable
tools/power turbostat: Consistently use print_float_value()
tools/power/turbostat: Fix microcode patch level output for AMD/Hygon
tools/power turbostat: Eliminate unnecessary data structure allocation
tools/power turbostat: Fix swidle header vs data display
tools/power turbostat: Fix illegal memory access when SMT is present and disabled
- Three fixes for the Intel pin control driver fixing the feature
set for the new silicon.
- One fix for an IRQ storm in the MCP23S08 pin controller/GPIO
expander.
-----BEGIN PGP SIGNATURE-----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=WxTb
-----END PGP SIGNATURE-----
Merge tag 'pinctrl-v7.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some late pin control fixes. I'm not happy to have bugs so late in the
kernel cycle, but they are all driver specifics so I guess it's how it
is.
- Three fixes for the Intel pin control driver fixing the feature set
for the new silicon
- One fix for an IRQ storm in the MCP23S08 pin controller/GPIO
expander"
* tag 'pinctrl-v7.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: mcp23s08: Disable all pin interrupts during probe
pinctrl: intel: Enable 3-bit PAD_OWN feature
pinctrl: intel: Fix the revision for new features (1kOhm PD, HW debouncer)
pinctrl: intel: Improve capability support
Currently, if perf_l2_init() fails turbostat exits after issuing the
following error (which was encountered on AlderLake):
turbostat: perf_l2_init(cpu0, 0x0, 0xff24) REFS: Invalid argument
This occurs because perf_l2_init() calls err(). However, the code has been
written in such a manner that it is able to perform cleanup and continue.
Therefore, this issue can be addressed by changing the appropriate calls
to err() to warnx().
Additionally, correct the PMU type arguments passed to the warning strings
in the ecore and lcore blocks so the logs accurately reflect the failing
counter type.
Signed-off-by: David Arcari <darcari@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
devm_kzalloc() failure in tegra_gpio_probe() returns -ENODEV, which
indicates "no such device". The correct error code for a memory
allocation failure is -ENOMEM.
Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Link: https://patch.msgid.link/20260409185853.2163034-1-samasth.norway.ananda@oracle.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Kconfig improvement for ethosu.
-----BEGIN PGP SIGNATURE-----
iJUEABMJAB0WIQTkHFbLp4ejekA/qfgnX84Zoj2+dgUCaddf9AAKCRAnX84Zoj2+
dvihAYCtQsSwH6VCpDf9bknrlqXpiUu+JlU2tSrK5plyTioCfFmdE1EhZmy7RJRo
EAFpb4ABf16BBat7a3SJ/8KYeNtoYggURn4JvNKKPMF1lSYa9PNmKQsJsfMGmHt5
IIKRgFYQXw==
=/nuD
-----END PGP SIGNATURE-----
Merge tag 'drm-misc-fixes-2026-04-09' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
Several fixes for v3d about memory leak, runtime PM, and locking, and a
Kconfig improvement for ethosu.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20260409-omniscient-tomato-coucal-edbadc@penduick
- Make modules-cpio-pkg respect INSTALL_MOD_PATH so that it can be used
with distribution initramfs files that have a merged /usr, such as
Fedora.
- Silence an instance of -Wunused-but-set-global, a strengthening of
-Wunused-but-set-variable in tip of tree Clang, in modpost, as the
variable for extra warnings is currently unused.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQR74yXHMTGczQHYypIdayaRccAalgUCadgzeAAKCRAdayaRccAa
lgwUAP9DR/KRuVYPGl32xPNpNGgZm/k1TFZhISk9iVzQctDoIQD/ZMfWz/6tAWcj
K1L0xTi8tzAhV16YOa/uYtr1bWEDrAI=
=ejUS
-----END PGP SIGNATURE-----
Merge tag 'kbuild-fixes-7.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nathan Chancellor:
- Make modules-cpio-pkg respect INSTALL_MOD_PATH so that it can be
used with distribution initramfs files that have a merged /usr,
such as Fedora
- Silence an instance of -Wunused-but-set-global, a strengthening
of -Wunused-but-set-variable in tip of tree Clang, in modpost,
as the variable for extra warnings is currently unused
* tag 'kbuild-fixes-7.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
modpost: Declare extra_warn with unused attribute
kbuild: modules-cpio-pkg: Respect INSTALL_MOD_PATH
When running as an SEV+ guest, treat SVM as unsupported even if CPUID (and
other reporting, e.g. MSRs) enumerate support for SVM, as KVM doesn't
support nested virtualization within an SEV VM (KVM would need to
explicitly share all VMCBs and other assets with the untrusted host), let
alone running nested VMs within SEV-ES+ guests (e.g. emulating VMLOAD,
VMSAVE, and VMRUN all require access to guest register state). And outside
of KVM, there is no in-tree user of SVM enabling.
Arguably, the hypervisor/VMM (e.g. QEMU) should clear SVM from guest CPUID
for SEV VMs, especially for SEV-ES+, but super duper technically, it's
feasible to run nested VMs in SEV+ guests (with many caveats). More
importantly, Linux-as-a-guest has played nice with SVM being advertised to
SEV+ guests for a long time.
Treating SVM as unsupported fixes a regression where a clean shutdown of
an SEV-ES+ guest degrades into an abrupt termination. Due to a gnarly
virtualization hole in SEV-ES (the architecture), where EFER must NOT be
intercepted by the hypervisor (because the untrusted hypervisor can't set
e.g. EFER.LME on behalf o the guest), the _host's_ EFER.SVME is visible to
the guest. Because EFER.SVME must be always '1' while in guest mode,
Linux-the-guest sees EFER.SVME=1 even when _its_ EFER.SVME is '0', thinks
it has enabled virtualization, and ultimately can cause
x86_svm_emergency_disable_virtualization_cpu() to execute STGI to ensure
GIF is enabled. Executing STGI _should_ be fine, except Linux is a also
wee bit paranoid when running as an SEV-ES guest.
Because L0 sees EFER.SVME=0 for the guest, a well-behaved L0 hypervisor
will intercept STGI (to inject #UD), and thus generate a #VC on the STGI.
Which, again, should be fine. Unfortunately, vc_check_opcode_bytes() fails
to account for STGI and other SVM instructions, throws a fatal error, and
triggers a termination request. In a perfect world, the #VC handler would
be more forgiving of unknown intercepts, especially when the #VC happened
on an instruction with exception fixup. For now, just fix the immediate
regression.
Fixes: 428afac5a8 ("KVM: x86: Move bulk of emergency virtualizaton logic to virt subsystem")
Reported-by: Srikanth Aithal <sraithal@amd.com>
Closes: https://lore.kernel.org/all/c820e242-9f3a-4210-b414-19d11b022404@amd.com
Link: https://patch.msgid.link/20260409191341.1932853-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Extract the lock-protected parts of SEV ASID allocation into a new helper
and opportunistically convert it to use guard() when acquiring the mutex.
Preserve the goto even though it's a little odd, as it's there's a fair
amount of subtlety that makes it surprisingly difficult to replicate the
functionality with a loop construct, and arguably using goto yields the
most readable code.
No functional change intended.
Signed-off-by: Carlos López <clopez@suse.de>
[sean: move code to separate helper, rework shortlog+changelog]
Link: https://patch.msgid.link/20260310234829.2608037-21-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
