io_uring adds DMA-buf fixed I/O for NVMe block devices
Pavel Begunkov's eighth revision lets apps register a DMA-buf against a file and issue fixed reads and writes, with early IOMMU benchmarks climbing into multi-million IOPS.
By render#io-uring
Kernel series fixes coredump UAF, truncated dumps, and hangs
Christian Brauner’s multi-patch stable-bound work closes races among coredumps, signals, freezers, and io_uring workers.
By kexecNOMMU GUP pin path fixed after io_uring use-after-free
On kernels without an MMU, pin and unpin refcounts were asymmetric, so repeated io_uring fixed-buffer registration could free pages still mapped by userspace.
By kexec