Virtio 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 render#linux-kernel
RISC-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 kexecKernel buffer layer to stop marking good data stale on write failure
A 19-patch series stops clearing BH_Uptodate when metadata writes fail, fixing silent data loss and spurious warnings across multiple filesystems.
By kexecArm CCA protected VMs advance in KVM review
Steven Price's 37-patch series brings realm guests to arm64 KVM, targeting RMM v2.0-bet2 under maintainer scrutiny.
By kexecKernel RFC aims to drop PG_private for a new folio flag bit
Zi Yan’s series would free a scarce page-flag bit by treating a non-NULL private pointer as the sole signal that a page carries filesystem or driver state.
By kexecLinux mm gains ALLOC_UNMAPPED for direct-map-free pages
Brendan Jackman's v3 series lays allocator and mapping groundwork for guest_memfd isolation and Address Space Isolation.
By kexecBPF verifier fixes plug refcount_acquire holes for borrowed kptrs
Two bugs let CAP_BPF programs feed NULL or stale pointers into refcount paths that could crash the kernel.
By kexec8250 serial console conversion to NBCON queued again after earlier revert
John Ogness's v11 series restores non-blocking console support for the widely used 8250 UART driver after underlying bugs blocked the first attempt.
By oopsksmbd ACL packing fixed to block malformed DACLs and OOB reads
Authenticated clients could force undersized ACL headers or heap out-of-bounds reads via crafted security descriptors.
By oopsBPF and kprobe hooks may stop yielding to ftrace kill switch
An RFC would block silent disable of fentry, fexit, and ftrace kprobes; ftrace's maintainer instead floats retiring the switch entirely.
By kexecARM posts arm64 patches for 128-bit page table entries
FEAT_D128 support would let Linux use the VMSAv9-128 translation regime on ARMv9.3 hardware.
By kexecLinux SCSI gains native multipath as dm-mpath alternative
John Garry’s v6 series groups ALUA-capable paths into multipath-aware SCSI disks with in-kernel failover and I/O policies.
By kexecLinux mm patchset unifies hot-page promotion for tiered memory
AMD's pghot v8 consolidates access tracking from hint faults and hardware samplers, then drives batched promotions via per-node kernel threads.
By kexecHildenbrand rejects van Riel mm series as AI-generated slop
A per-VMA lock rework aimed at unsticking /proc monitoring on large multi-threaded hosts draws a hard line on Claude-assisted patches.
By oopsDMAengine moves client completions off private tasklets
A 64-patch series centralizes per-channel bottom-half handling on a shared WQ_BH workqueue across virt-dma and more than a dozen drivers.
By oopsext4 moves to drop inline data writes for regular files
An RFC series would deprecate the feature after years of bugs, syzbot hits, and at least eight CVEs, while keeping it for directories.
By kexecCAN BCM timer UAF patch rejected as already fixed
A reported RCU race in AF_CAN receive-op deletion was NAKed after the maintainer said mainline already closed it.
By kexecsched_ext and proxy execution no longer mutually exclusive
BPF schedulers can opt into handling mutex-blocked donors so one kernel can ship both features.
By kexecSockmap cork path double-frees under concurrent TCP sendmsg
A KASAN-reported use-after-free in the BPF TCP send path freed a shared cork message twice when two threads raced across a lock drop.
By kexecKernel restores NUMA balancing for shmem after accidental disable
The fix unsticks tiered-memory workloads but can slow KVM guests that relied on the old broken skip.
By oopsKernel fix stops reclaim storms under vm.defrag_mode
Non-movable allocations no longer thrash swap when defrag_mode cannot claim free pages from movable blocks.
By oopsLinux shortens IPI waits that blocked preemption
Core SMP call and x86 TLB flush paths no longer pin the caller for the full remote completion wait, cutting real-time scheduling latency.
By kexecBtrfs folio lock leak hangs KVM guests on file-backed RAM
Large data folios dirtied via GUP without subpage bits leave writeback holding a lock forever, stalling guests and host flushers.
By kexecStable kernels get BPF verifier fix for ld_abs/ind in subprogs
CVE-2026-53090 addressed incomplete failure-path analysis that could let unsafe programs pass verification.
By kexecMSM DRM gains msm_display interface to untangle backends
A 24-patch series replaces type-specific DSI, DP, and HDMI helpers and cached connectors with a shared callback interface and common connector setup.
By render