linux.git/io_uring/net.c, branch master

Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20T20:55:16+00:00

Pull block updates from Jens Axboe: - NVMe updates via Keith: - Enable Clang context analysis for the nvme host driver, adding context annotations across core, fabrics, rdma, tcp and pci - nvmet reservation state exposed through a new namespace-level debugfs directory, plus ABI documentation for the host sysfs and target configfs interfaces - nvme-tcp host memory disclosure fixes on the read path: reject a read that transferred too few bytes, don't accept C2HData based on blk_rq_payload_bytes() alone, and fix the R2T case for a read command - Parallelize nvme-rdma I/O queue allocation and startup (Surabhi) - Apple nvme fixes and quirks: page aligned admin queue buffers, destroy the admin queue on removal, and various DMA/NVMMU correctness fixes - A large pile of nvmet and host fixes for out-of-bounds reads, refcount/resource leaks, and NULL derefs across auth, zns, passthru, pci-epf, rdma and configfs - Various other fixes and cleanups - MD updates via Yu Kuai: - llbitmap reshape support, the large series wiring exact bitmap mapping and reshape lifecycle through raid5 and raid10, growing the page cache in place, and remapping checkpointed bits as reshape progresses - raid5 fixes for lockless max_nr_stripes and recovery_offset accesses, a reshape deadlock with more failed devices than max degraded, and bitmap batch counter consistency - Atomic write handling for raid1/raid10, and removal of the REQ_NOWAIT support from raid1/10/456 - raid5-ppl use-after-free fix in ppl_do_flush() - A batch of smaller fixes across md core and the bitmap code - s390/dasd ESE full-track write support and the surrounding infrastructure, plus enabling CONTEXT_ANALYSIS for s390/block - RWF_DONTCACHE support for block devices, built on new task-context bio completion infrastructure, and wiring it up for the iomap and buffer dropbehind writeback paths - Async io_uring zone reset all, plus zone management command cleanups allowing REQ_NOWAIT and tightening conventional zone rejection - Block integrity refactoring: lift BIP_CHECK_FLAGS to the shared header, handle nogenerate/noverify properly in fs-integrity, and drop the blk-integrity.h include from bdev.c - Split out a new blk_plug.h header - ublk improvements: add UBLK_F_IO_DESC_SIZE, split request validation from io_desc init, reject non-power-of-2 zone sizes in SET_PARAMS, and a series of hardening fixes around map/unmap and auto buf reg - null_blk cleanups and configfs serialization fixes - nbd queue freeze removal on the setup paths, and a new pre_defined_connections module parameter for pre-created devices - blk-cgroup fixes for the race between policy activation and blkg destruction, and accounting per-cpu stats over possible CPUs across blk-stat, iolatency, iocost and kyber - Various dio fixes: leak on metadata mapping error, validate user space vectors during extraction, and set dma_alignment from the backing file for loop and zloop direct I/O - bio cleanups - Various other fixes and cleanups all over * tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (241 commits) nbd: add pre_defined_connections module parameter for pre-created devices nbd: remove queue freeze for newly created nbd from netlink path nbd: factor out a nbd_genl_foreach_sock nbd: skip queue freeze when setting size at device startup nbd: remove queue freeze in nbd_add_socket nbd: clear queue limits on disconnect nbd: disallow NBD_SET_SOCK on an active device nbd: simplify find_fallback() by removing redundant logic blk-mq: add missing call to srcu_barrier() in blk_mq_free_tag_set() block: mtip32xx: synchronize ioctls with device removal ublk: avoid teardown retry loop on xarray allocation failure null_blk: fix UBSAN shift-out-of-bounds when zone_size is 0 or overflows block: don't include blk-integrity.h in bdev.c xfs: avoid double deferrals for RWF_DONTCACHE writes loop: Fix recently introduced lock inversion block: set QUEUE_FLAG_DYING unconditionally in blk_mark_disk_dead() swim3: Add missing MODULE_DESCRIPTION selftests: ublk: add SET_PARAMS validation test selftests: ublk: add helper for SET_PARAMS ublk: reject non-power-of-2 zone sizes in SET_PARAMS ...

Merge tag 'for-7.3/io_uring-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-08-20T20:47:56+00:00

Pull io_uring update from Jens Axboe: "On top of the usual cleanups and fixes, the bigger items in here are: - zcrx work, most of it centered around adding dynamic area provisioning, plus a bunch of prep and cleanups leading up to it: scale refilling with large pages, coalesce same-niov RQEs on refill, separate the RQ head/tail cache lines and cache the RQ tail, and rework the area creation locking. - Fix the futex inflight accounting so that only private futex waits are marked inflight, and don't mark wake requests as inflight at all. - Drop the custom iov copy in the buffer select prep and msg header copy paths, using the generic helpers instead. - Fix a folio size overflow in io_vec_fill_bvec(), and account the pages a compound region really uses in the memmap path. - Fix an iovec leak in uring_cmd when the async cmd isn't recycled, skip the blocking task work for io_uring_cmd_issue_blocking(), and don't skip completion for a synchronous multishot cmd - Defer eventfd signaling when queued from a wakeup handler - Fix io-wq worker accounting when canceling creation callbacks - Annotate remote tasks for kcoverage" * tag 'for-7.3/io_uring-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (30 commits) io_uring: Add missing include for ITER_SOURCE and ITER_DEST io_uring/uring_cmd: don't skip completion for a synchronous multishot cmd io_uring/memmap: account the pages a compound region really uses io_uring/zcrx: add dynamic area provisioning io_uring/zcrx: lock area creation with pp_lock io_uring/zcrx: keep array of areas io_uring/zcrx: move freelist lock to struct zcrx io_uring/zcrx: unmap under netdev lock io_uring/zcrx: split dmabuf unmap and release io_uring/zcrx: don't pass ifq_reg to area creation io_uring/zcrx: add helper for deriving area token io_uring/zcrx: don't reload skb_shinfo io_urint/zcrx: narrow var scope in io_zcrx_recv_skb() io_uring/zcrx: constify area_reg on import io_uring/zcrx: coalesce same-niov RQEs on refill io_uring/zcrx: cache RQ tail io_uring/zcrx: add RQ iterator io_uring/zcrx: move RQ head/tail to separate cache lines io_uring/zcrx: scale refilling with large pages io_uring/io-wq: fix worker accounting when canceling creation callbacks ...

io_uring/net: Drop ddir argument from io_msg_copy_hdr

2026-08-15T23:25:33+00:00

ddir was only ever forwarded to io_compat_msg_copy_hdr, which never looked at it. Drop it. Signed-off-by: Gabriel Krisman Bertazi Link: https://patch.msgid.link/20260813004022.3514537-4-krisman@suse.de Signed-off-by: Jens Axboe

io_uring/net: Drop custom iov copy in io_msg_copy_hdr

2026-08-15T23:25:33+00:00

Similar to commit f4eaf8eda89e ("io_uring/rsrc: Drop io_copy_iov in favor of iovec API"), avoid the custom copy of a single iovec and just rely on the iovec api. This lets the compat and native paths share the buffer-select length lookup Signed-off-by: Gabriel Krisman Bertazi Link: https://patch.msgid.link/20260813004022.3514537-3-krisman@suse.de Signed-off-by: Jens Axboe

block: rename bi_bvec_done

2026-08-06T12:47:33+00:00

struct bvec_iter::bi_bvec_done is used an offset in the current bvec, let's rename it accordingly for better clarity. I also plan to use it for non-bvec based iteration in the future like dma-buf, so drop the "bvec" part. Suggested-by: Christoph Hellwig Reviewed-by: Christoph Hellwig Signed-off-by: Pavel Begunkov Link: https://patch.msgid.link/4e4c21858705a200bd8848ffe4080522e3eb5c1c.1786018753.git.asml.silence@gmail.com Signed-off-by: Jens Axboe

io_uring/net: initialize mshot_len for send

2026-07-30T16:33:05+00:00

Commit: 6a8afb9fff64 ("io_uring/net: allow multishot receive per-invocation cap") changed how io_mshot_prep_retry() set sr->len, and added the same initialization in io_mshot_prep_retry(). But it neglected to touch the send path, which may also uses the mshot retry path. Ensure that sr->mshot_len always gets initialized correctly. Fixes: 6a8afb9fff64 ("io_uring/net: allow multishot receive per-invocation cap") Cc: stable@vger.kernel.org Reported-by: Sung Keum Reviewed-by: Gabriel Krisman Bertazi Signed-off-by: Jens Axboe

Merge tag 'for-7.2/io_uring-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-06-16T07:23:59+00:00

Pull io_uring updates from Jens Axboe: - Rework the task_work infrastructure. Both the local (DEFER_TASKRUN) and the normal (tctx) task_work lists were llist based, which is LIFO ordered, and hence each run had to do an O(n) list reversal pass first to restore queue order. Additionally, to cap the amount of task_work run, each method needed a retry list as well. Add a lockless MPCS FIFO queue (based on Dmitry Vyukov's intrusive MPSC algorithm) and switch both task_work lists to it. It performs better than llists and we can then also ditch the retry lists as well as entries are popped one-at-the-time. On top of those changes, run the tctx fallback task_work directly and remove the now-unused per-ctx fallback machinery entirely. - zcrx user notifications. Add a mechanism for zcrx to communicate conditions back to userspace via a dedicated CQE, with the initial users being notification on running out of buffers and on a frag copy fallback, plus shared-memory notification statistics. Alongside that, a series of zcrx reliability and cleanup fixes: more reliable scrubbing, poisoning pointers on unregistration, dropping an extra ifq close, adding a ctx back-pointer, reordering fd allocation in the export path, and killing a dead 'sock' member. - Allow using io_uring registered buffers for plain SEND and RECV, not just for the zero-copy send path. This enables targets like ublk's NBD backend to push/pull IO data directly to/from a registered buffer over a plain send/recv on a TCP socket. - Registered buffer improvements: account huge pages correctly, bump the io_mapped_ubuf length field to size_t, and raise the previous 1GB registered buffer size limit. - Restrict the ctx access exposed to io_uring BPF struct_ops programs by handing them an opaque type rather than the full io_ring_ctx, and add a separate MAINTAINERS entry for the bpf-ops code. - Allow opcode filtering on IORING_OP_CONNECT. - Validate ring-provided buffer addresses with access_ok(), and align the legacy buffer add limit with MAX_BIDS_PER_BGID. - Various other cleanups and minor fixes, including avoiding msghdr async data on connect/bind, dropping async_size for OP_LISTEN, making the POLL_FIRST receive side checks consistent, re-checking IO_WQ_BIT_EXIT for each linked work item, and using trace_call__##name() at guarded tracepoint call sites. * tag 'for-7.2/io_uring-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (31 commits) io_uring/bpf-ops: add a separate maintainer entry io_uring/net: make POLL_FIRST receive side checks consistent io_uring: remove the per-ctx fallback task_work machinery io_uring: run the tctx task_work fallback directly io_uring: switch normal task_work to a mpscq io_uring: switch local task_work to a mpscq io_uring/mpscq: add lockless multi-producer, single-consumer FIFO queue io_uring: grab RCU read lock marking task run io_uring/zcrx: kill dead 'sock' member in struct io_zcrx_args io_uring/kbuf: validate ring provided buffer addresses with access_ok() io_uring/net: support registered buffer for plain send and recv io_uring/nop: Drop a wrong comment in struct io_nop io_uring/net: Remove async_size for OP_LISTEN io_uring/net: Avoid msghdr on op_connect/op_bind async data io_uring/bpf-ops: restrict ctx access to BPF io_uring/io-wq: re-check IO_WQ_BIT_EXIT for each linked work item io_uring/kbuf: align legacy buffer add limit with MAX_BIDS_PER_BGID io_uring/zcrx: add shared-memory notification statistics io_uring/zcrx: notify user on frag copy fallback io_uring/zcrx: notify user when out of buffers ...

Merge tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2026-06-16T03:31:23+00:00

Pull crypto updates from Herbert Xu: "API: - Drop support for off-CPU cryptography in af_alg - Document that af_alg is *always* slower - Document the deprecation of af_alg - Remove zero-copy support from skcipher and aead in af_alg - Cap AEAD AD length to 0x80000000 in af_alg - Free default RNG on module exit Algorithms: - Fix vli multiplication carry overflow in ecc - Drop unused cipher_null crypto_alg - Remove unused variants of drbg - Use lib/crypto in drbg - Use memcpy_from/to_sglist in authencesn - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode - Filter out async aead implementations at alloc in krb5 - Fix non-parallel fallback by rstoring callback in pcrypt - Validate poly1305 template argument in chacha20poly1305 Drivers: - Add sysfs PCI reset support to qat - Add KPT support for GEN6 devices to qat - Remove unused character device and ioctls from qat - Add support for hw access via SMCC to mtk - Remove prng support from crypto4xx - Remove prng support from hisi-trng - Remove prng support from sun4i-ss - Remove prng support from xilinx-trng - Remove loongson-rng - Remove exynos-rng Others: - Remove support for AIO on sockets" * tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (196 commits) crypto: tegra - fix refcount leak in tegra_se_host1x_submit() crypto: rng - Free default RNG on module exit crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode hwrng: jh7110 - fix refcount leak in starfive_trng_read() crypto: atmel-ecc - drop dead code in atmel_ecdh_max_size crypto: cavium/cpt - fix DMA cleanup using wrong loop index crypto: marvell/octeontx - fix DMA cleanup using wrong loop index MAINTAINERS: make myself the maintainer of the Qualcomm QCE driver crypto: amcc - convert irq_of_parse_and_map to platform_get_irq crypto: sun4i-ss - Remove insecure and unused rng_alg hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/ crypto: xilinx-trng - Replace crypto_drbg_ctr_df() with HMAC-SHA512 crypto: xilinx-trng - Fix return value of xtrng_hwrng_trng_read() crypto: xilinx-trng - Remove crypto_rng interface crypto: exynos-rng - Remove exynos-rng driver hwrng: hisi-trng - Move hisi-trng into drivers/char/hw_random/ crypto: hisi-trng - Remove crypto_rng interface crypto: loongson - Remove broken and unused loongson-rng crypto: crypto4xx - Remove insecure and unused rng_alg crypto: qat - validate RSA CRT component lengths ...

io_uring/net: make POLL_FIRST receive side checks consistent

2026-06-13T12:27:24+00:00

io_recv() and io_recvzc() are the odd ones out, as they checks for whether POLL_FIRST should be honored before checking if the file is a socket. It doesn't really matter, but might as well make it consistent across all receive and send types. Signed-off-by: Jens Axboe

io_uring/net: support registered buffer for plain send and recv

2026-06-08T14:32:43+00:00

So far IORING_RECVSEND_FIXED_BUF is only honoured on the SEND_ZC path, even though the import wiring is already present for plain send and completely absent for recv. Targets such as ublk's NBD backend want to push/pull I/O data directly to/from an io_uring registered buffer over a plain send/recv on a TCP socket. Wire IORING_RECVSEND_FIXED_BUF into the plain IORING_OP_SEND and IORING_OP_RECV paths: - Accept the flag in SENDMSG_FLAGS / RECVMSG_FLAGS and, at prep time, restrict it to the non-vectorized IORING_OP_SEND / IORING_OP_RECV opcodes. It is mutually exclusive with buffer select, bundles and (for recv) multishot, and records sqe->buf_index. - For recv, set REQ_F_IMPORT_BUFFER in setup so the registered buffer is imported lazily at issue time, mirroring the send path. - In io_send()/io_recv(), import the registered buffer via io_import_reg_buf() (ITER_SOURCE for send, ITER_DEST for recv) and clear REQ_F_IMPORT_BUFFER. The resulting bvec iter persists in async_data, so MSG_WAITALL partial send/recv retries resume at the right offset. Signed-off-by: Ming Lei Link: https://patch.msgid.link/20260608142511.659240-2-ming.lei@redhat.com [axboe: combine flags checks] Signed-off-by: Jens Axboe