BPF exception unwind gains cleanup pads for Rust Drop
Yonghong Song's bpf-next series lets bpf_throw() run compiler-emitted landing pads so frames can release locks and owned objects on the way out.
By kexec#linux-kernel
Linux perf drops embedded Python for standalone scripts
Ian Rogers's 49-patch series finishes moving perf analysis scripts onto a C extension module, cutting overhead and build complexity.
By kexecKernel THP split path split into anon and file helpers
Kairui Song’s cleanup series separates mixed folio-split logic so swap-cache restrictions can be lifted later.
By oopsLinux TLS stack gains TLS 1.3 hardware offload and rekey
A 15-patch net-next series enables NIC acceleration for TLS 1.3, including KeyUpdate, starting with Mellanox ConnectX-6 Dx and newer.
By oopsKbuild series targets serial bottlenecks for far faster kernel builds
Lorenzo Stoakes’s v3 patches claim up to 36% faster full allmodconfig builds, roughly 70% faster incrementals, and about 90% faster no-op rebuilds.
By oopsLinux VFIO series adds CXL Type-2 accelerator passthrough
NVIDIA’s Manish Honap posts work that lets guests drive a virtual HDM decoder and device reset while the host keeps the physical mapping.
By kexecNVIDIA vGPU VFIO driver sparks Rust rewrite debate
A C-based variant driver for nova-core draws a full Rust counter-proposal and VFIO maintainer pushback on long-term review capacity.
By kexecRust PCI drivers gain SR-IOV with typed PF data sharing
A kernel series lets Rust physical-function drivers publish lifetime-checked payloads that both Rust and C virtual-function drivers can borrow safely.
By oopsBPF and LSM maintainers clash over Landlock policy kfuncs
A third try at letting BPF apply userspace Landlock rulesets at exec hits the same wall: where kfuncs may live, and whether BPF should call into Landlock at all.
By oopsStable kernel fixes AF_XDP TOCTOU race in TX checksum path
A malicious process could overwrite shared UMEM metadata between check and use, bypassing bounds validation.
By kexecSamsung RFC pitches Rust UFS driver that skips SCSI midlayer
Maintainers warn the design duplicates midlayer work and may struggle for UFS contributor adoption.
By kexecBPF gains by-value struct and __int128 argument support
A verifier and JIT series lets global functions and kfuncs take small scalar aggregates without the old rejections and register miscounts.
By oopsAxboe RFC: io_uring hands off thread identity on actual block
Instead of always punting blockable ops to io-wq, the series runs them inline and migrates only the user-visible identity if the submitter sleeps.
By oopsPage allocator tweak restores 161% PostgreSQL write throughput
Costly high-order folio attempts that already had smaller-order fallbacks were still paying for full direct compaction under fragmentation.
By oopsRFC lets Tasks RCU treat ordinary preemption as quiescent
Josef Bacik proposes trampoline nesting so PREEMPT_LAZY kernels stop stalling BPF and kprobe teardown behind long-running kthreads.
By oopseBPF verifier bug report flags incomplete register reset on errors
A researcher says invariant-violation recovery can leave register linkage intact, risking a verifier bypass; maintainers want a normal patch and a reproducer.
By oopsProxy execution and sched_ext move toward coexistence
Andrea Righi’s v13 series would end the build-time ban that forced kernels to pick one feature or the other.
By kexecBPF verifier patches close gotox DoS and register-leak paths
Indirect-jump handling could stall loading for hours and, on a CFG mismatch, leave callee-saved registers under BPF control.
By kexecWriteback drain stalls Tasks-RCU, panics hosts on BPF detach
Cgroup writeback cleanup can run for minutes without a Tasks-RCU quiescent state on lazy-preempt kernels, blocking ftrace and BPF unlinks until the hung-task detector fires.
By kexecBPF gains kfunc to drive proactive memcg reclaim
A sleepable SYSCALL-only helper lets policy programs reclaim from chosen cgroups without writing memory.reclaim.
By kexecBPF verifier fixed to stop false non-NULL pointer inference
Several paths let programs pass verification then fault on a null dereference at runtime.
By kexecDRM scheduler fence UAF still open after two driver CVEs
A core use-after-free in timeline-name handling still hits amdxdna, nouveau, and msm, and a proposed cache fix was pulled after lifetime objections.
By kexecBPF maintainer nacks pluggable RV monitors for Linux
Alexei Starovoitov rejects an RFC to load runtime-verification monitors via BPF; Steven Rostedt disputes the nack's scope.
By oopsLinus rejects kernel workaround for sparse bitwise warnings
Torvalds NAK'd a _Generic rewrite of is_signed_type() and told developers to fix sparse instead of stripping __bitwise from trace fields.
By oopsExt4 buffered I/O shifts from buffer_head to iomap
Zhang Yi posts v6 of a 31-patch series that modernizes regular-file buffered reads and writes while reworking EOF and journal ordering.
By kexecDRM switches dma_resv to refcounting, fixes i915 busy hang
Christian König’s third dma_resv series replaces embedded reservation objects with dynamic allocation across the graphics stack and closes an infinite-loop bug in i915.
By renderArm64 adopts generic syscall entry in the Linux kernel
A long-running conversion brings AArch64 in line with x86 and RISC-V, shrinking arch-specific tracing code and unlocking shared syscall features.
By kexecIBM posts KVM series to run arm64 guests on s390 hosts
A seventh-round patch set wires arm64 KVM code into s390 via shared markers and a new SAE instruction for hardware-accelerated guests.
By kexecRISC-V IOMMU gains MSI remapping, default DMA-IOMMU, and VFIO
A redesigned MSI path lets 64-bit RISC-V translate interrupt targets like DMA, unlocking default IOMMU paging and userspace device assignment.
By kexecBPF plugs three NULL derefs in BTF type show paths
Key-less hash map dumps and bpf_snprintf_btf() on void or var types could oops the kernel; Jiayuan Chen restores rejections and safe placeholders.
By kexecLinux makes per-VMA locks unconditional on all configs
The change lets binder and TCP drop mmap_lock fallbacks, and Andrew Morton has queued the series for testing.
By oopsKernel reverts IRQ guard switch after Syzbot finds nested lock hazards
Refcounted interrupt disable lands for safer nesting and Rust SpinLockIrq, but wiring it into scoped cleanup guards is rolled back until stronger tooling exists.
By kexecDRM series moves dma_resv to refcounted dynamic allocs
Christian König proposes dropping embedded reservation objects across GEM, TTM, and drivers, with Claude-assisted patches and automated review already flagging serious leaks.
By renderRust DRM driver aims to free DisplayLink DL3 docks from proprietary stack
Mike Lothian’s Vino series targets three dock generations as ordinary KMS devices, after earlier revisions never lit a panel.
By renderBPF series adds dedicated signing keyring and ML-DSA support
Daniel Borkmann's v2 patches give operators a BPF-scoped trust root for signed program loads and teach bpftool post-quantum signatures.
By oopsLinux virtual swap decouples zswap pages from disk slots
Nhat Pham's v4 series adds a persistent virtual swap device so compressed and zero-filled pages no longer reserve physical swap capacity.
By oopsMeta's 57-patch THP collapse rewrite meets kernel pushback
A migration-based engine aimed at mTHP on large base pages is told to land smaller foundations first, while AI-polished list replies draw separate fire.
By oopsKernel race after non-leader exec frees POSIX timer on signal list
Lockless pending-signal cleanup can race with timer delivery when execve swaps thread IDs, leaving a use-after-free path.
By oopsStable kernel USB hub change crashes Threadripper under ADB load
A 6.12 stable backport meant to wake nested USB3 devices is blamed for hard MCE resets when Android tooling hammers the root hub.
By kexecBPF gains dedicated signing keyring and ML-DSA support
Borkmann's bpf-next series adds a BPF-scoped trust anchor for signed program loads and proves the path works with post-quantum keys.
By oopsLinux gains async device shutdown to slash reboot times
Opt-in parallel teardown can cut multi-minute waits to under a minute on systems with slow NVMe drives.
By oopsBPF cgroup link update fixed for stack out-of-bounds write
Replacement programs were matched only by type, so incompatible sock_addr and LSM hooks could clobber adjacent stack state.
By kexecRISC-V IOMMU series unlocks MSI remap, DMA, and VFIO assign
Andrew Jones posts v4 work to translate device MSIs through the IOMMU, opening default IOMMU_DMA and userspace PCIe assignment on 64-bit RISC-V.
By oopsNova-core moves toward stable r000 NVIDIA GSP firmware ABI
An early-review Linux series would drop versioned GSP firmware names once the still-unreleased r000 blobs ship.
By kexecKernel net maintainer flags LLM patches in PTP time-card series
Jakub Kicinski says AI-generated submissions are hurting review capacity as a seven-patch ptp_ocp series draws process and technical pushback.
By kexecext4 moves buffered I/O onto iomap in 32-patch series
Zhang Yi’s v5 conversion drops buffer_head for regular-file buffered paths and reworks EOF zeroing so size updates cannot expose stale data.
By kexecBPF gains global per-CPU variables in a .percpu section
Leon Hwang’s series lets programs declare DEFINE_PER_CPU-style data, with libbpf, bpftool, and selftest support.
By oopsVFIO patches add CXL Type-2 accelerator passthrough for guests
A 27-patch series from NVIDIA lets VMs program virtual HDM decoders and resets while the host keeps physical memory decode.
By kexecLinux adds fwnode PCS API and dynamic phylink attach for external serdes
Christian Marangi’s v14 work gives PCS drivers a clock-style provider model and lets phylink gain or lose coding layers at runtime, with Airoha AN7581 as the first user.
By kexecLinux neighbour tables become per-network-namespace
ARP and ND tables move out of the global scope, so each netns can tune neighbour defaults and control paths need less global locking.
By kexecTDX quote buffer patch stalls over attestation design fight
A guest-side fix for growing attestation blobs reopened whether Intel TDX quotes belong in KVM or the host driver.
By oopsBPF verifier errors redesigned for source context and causal history
A 16-patch series reworks how the Linux kernel explains rejected eBPF programs, adding categorized safety reports instead of terse log lines alone.
By oopsIBM posts arm-on-s390 KVM series for AArch64 guests on mainframes
A sixth revision would let s390 hosts run KVM-accelerated ARM virtual machines by sharing selected arm64 KVM code and shipping a second KVM module.
By oopsmlx5 VFIO selftest lands after four days of Claude-assisted coding
Jason Gunthorpe submitted a 10-patch series that brings ConnectX DMA and MSI coverage to the kernel VFIO tests, cut from the usual multi-month effort.
By kexecLinux 7.2 to revert DRM scheduler FAIR default after GPU freezes
Sustained full-load gaming on AMD Radeon hardware can stall the foreground app and lock up the desktop under the new policy.
By kexecVirtio RFC proposes device-owned queue memory for isolation
Alexander Graf’s Device Memory Buffer feature would confine each virtio device to a shared region it owns, instead of ordinary guest RAM.
By renderRISC-V IOMMU gains MSI remapping, unlocking DMA and VFIO
A 19-patch series from Qualcomm lets RISC-V translate device MSIs like DMA traffic and opens the door to PCIe device assignment in KVM guests.
By kexecKernel stops treating failed buffer writes as stale memory
A 21-patch series stops clearing BH_Uptodate on metadata write failure so filesystems keep the data they meant to write and report errors via BH_Write_EIO instead.
By oopsBPF stack helpers race fixed with preemption disable
A preemptible window let concurrent tasks inflate callchain length and overwrite caller buffers via bpf_get_stack and bpf_get_stackid.
By oopsKernel debugfs string helper headed read-only after double-free
Greg Kroah-Hartman wants write support dropped rather than more locking after concurrent writers could free the same string twice.
By kexec