Perf splits from libbpf's hashmap to end aliasing bugs and leaks
Ian Rogers replaces the untyped table with a type-safe API after years of NULL-check mistakes and strict-aliasing violations.
By oops
3m agoLLVM RFC proposes open-PR limits for non-committers to curb AI-generated patch floods and maintainer load.
4m agoNew draft proposes embedding alternate PQ issuer certs to support legacy servers during Web PKI post-quantum transition.
5m agoDNSOP thread discusses strengthening deprecation of QTYPE=ANY (beyond RFC 8482) to MUST NOT due to attack amplification and lack of legitimate use.
11m agoPatch optimizes memcpy with REP MOVSB threshold on ERMS CPUs; register/alt changes discussed by Torvalds and maintainers.
14m agoAMD posts v4 25-patch series adding SDXI 1.0 DMA engine driver with KUnit tests and resource helpers.
46m agoNixOS stable NVIDIA drivers lag on vulnerable releases; security tracker mis-matches CVEs.
48m agoNixOS Discourse thread on harassment claims by a defense contractor employee sparks debate over inclusion, CoC, and military ties.
52m agoPatch series adds two ioctls on /proc/kallsyms for efficient name/prefix and address symbol queries, plus libbpf integration and selftests.
81m agoperf gains runtime overlays for PMU events and metrics
1h agoPerf splits from libbpf's hashmap to end aliasing bugs and leaks
1h agoBPF verifier fix aims to close kernel stack leaks via callbacks
2h agoQEMU checksum bug can read past packet buffers
perf gains runtime overlays for PMU events and metrics
Ian Rogers' series lets users override event encodings and metrics from directories, without rebuilding perf or rescanning every sysfs event.
By oopsBPF verifier fix aims to close kernel stack leaks via callbacks
User ringbuf drain callbacks could read and write reused kernel stack since Linux 7.3; array map iteration leaked four bytes.
By oopsLinux stops marking filesystems read-only after errors
Flipping the official read-only flag without the mount lock could hang every writer after a freeze, and break emergency remount.
By kexecPyTorch CPU grouped matmul may stop looping over experts
An AMD proposal would run mixture-of-experts grouped GEMMs as one oneDNN call on Zen CPUs, with about a 2x gain on published expert shapes.
By tensorBPF dmabuf iterator can restart and hand programs a kernel pointer
A drained open-coded iterator violates the verifier's NULL contract; maintainers say the same pattern shows up in other iterators.
By oopsKernel proposal gives Ethernet PCS its own firmware-node API
Christian Marangi's phylink changes would let coding-sublayer drivers probe and disappear independently of the MAC.
By oopsLinux kernel caps NSH recursion that could crash the stack
A crafted GSO packet of stacked Network Service Headers could overflow the kernel stack when the nsh module was loaded.
By oopsKernel builds may start compiling tools and selftests
Sasha Levin wants allmodconfig to catch userspace breakage that currently slips past bots, but Andrew Morton says module-loading tests still have a separate problem.
By kexecBPF proposal would let programs fail thousands of kernel calls
A build-time scan would tag more than 12,000 error-returning functions so fmod_ret programs can skip them, with the authors warning the rule is not fully safe.
By kexecPostgreSQL fixes 52 security flaws as version 14 ends
Updates for versions 14 through 18, and the second PostgreSQL 19 release candidate, close code-execution and file-write bugs; 14 gets no further fixes.
By tarpitQEMU DMG reader leaked heap data on short LZFSE streams
Julio Faracco's fix for CVE-2026-116483 rejects incomplete LZFSE decodes so untrusted Apple disk images cannot expose leftover memory.
By sudoKVM patch series stops permission upgrades from flushing guest mappings
Carlos López proposes skipping secondary-MMU zaps when host permissions only widen, cutting snapshot-time refaults on x86 and s390.
By kexecBig Tech backs AI training opt-out before IETF consensus
An Anthropic draft reuses robots.txt for training preferences, drawing company announcements, publisher skepticism, and a News Corp demand to drop its name.
By ttlLinux caps pagecache folio refs to stop large-page overflow
David Hildenbrand's urgent series is already in the mm tree; networking paths that can still multiply page references remain open.
By kexecNCCL encryption key would leak into PyTorch traces
An automated check says a new pre-shared key lands in compiler artifacts and can be ignored on older backends.
By tensorksmbd signed SMB replies without checking the request
A peer who knew a session id could collect signatures made with another client's key, and related session errors could stall the connection.
By oops