Merge tag 'io_uring-7.3-20261002' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linuxgrafted

Pull io_uring fixes from Jens Axboe:

 - Fix a task_work add use-after-free with SQPOLL.

   The sqpoll thread could pop and complete the last request while
   io_req_normal_work_add() was still looking at them after the mpscq
   push.

   Use the same approach as DEFER_TASKRUN to protect from that, holding
   an RCU read lock across the add, and have exit wait for an RCU grace
   period for SQPOLL rings as well.

 - CQE32 ring fixes: correct the free entry check for 32b CQEs, zero the
   big_cqe for aux CQEs, and only post the dummy skip CQE on CQE_MIXED
   rings

 - Mark the source filter table as COW when cloning bpf filters, so
   registering another filter on the source doesn't modify the shared
   table in place

 - Initialize the task context before running the BPF loop

 - Requeue zcrx multishot receives stopped by a local resource

 - End a TX_TIMESTAMP multishot cmd when the CQ is full (lollipopkit)

* tag 'io_uring-7.3-20261002' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: fix task_work add use-after-free with SQPOLL
  io_uring/cmd_net: end TX_TIMESTAMP multishot when the CQ is full
  io_uring/zcrx: requeue multishot receives stopped by a local resource
  io_uring: initialize task context before running the BPF loop
  io_uring: zero big_cqe for aux CQEs on CQE32 rings
  io_uring: fix free entry check for 32b CQEs on CQE32 rings
  io_uring: only post the dummy skip CQE on CQE_MIXED rings
  io_uring/bpf_filter: mark source as COW when cloning filters

1 files changed, 89 insertions, 0 deletions

diff --git a/crypto/sm3.c b/crypto/sm3.c
new file mode 100644
index 000000000..05111a99b
--- /dev/null
+++ b/crypto/sm3.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * SM3 secure hash, as specified by OSCCA GM/T 0004-2012 SM3 and
+ * described at https://tools.ietf.org/html/draft-shen-sm3-hash-01
+ *
+ * Copyright (C) 2017 ARM Limited or its affiliates.
+ * Written by Gilad Ben-Yossef <gilad@benyossef.com>
+ * Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+ * Copyright 2026 Google LLC
+ */
+
+#include <crypto/internal/hash.h>
+#include <crypto/sm3.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#define SM3_CTX(desc) ((struct sm3_ctx *)shash_desc_ctx(desc))
+
+static int crypto_sm3_init(struct shash_desc *desc)
+{
+	sm3_init(SM3_CTX(desc));
+	return 0;
+}
+
+static int crypto_sm3_update(struct shash_desc *desc,
+			     const u8 *data, unsigned int len)
+{
+	sm3_update(SM3_CTX(desc), data, len);
+	return 0;
+}
+
+static int crypto_sm3_final(struct shash_desc *desc, u8 *out)
+{
+	sm3_final(SM3_CTX(desc), out);
+	return 0;
+}
+
+static int crypto_sm3_digest(struct shash_desc *desc,
+			     const u8 *data, unsigned int len, u8 *out)
+{
+	sm3(data, len, out);
+	return 0;
+}
+
+static int crypto_sm3_export_core(struct shash_desc *desc, void *out)
+{
+	memcpy(out, SM3_CTX(desc), sizeof(struct sm3_ctx));
+	return 0;
+}
+
+static int crypto_sm3_import_core(struct shash_desc *desc, const void *in)
+{
+	memcpy(SM3_CTX(desc), in, sizeof(struct sm3_ctx));
+	return 0;
+}
+
+static struct shash_alg sm3_alg = {
+	.base.cra_name		= "sm3",
+	.base.cra_driver_name	= "sm3-lib",
+	.base.cra_priority	= 300,
+	.base.cra_blocksize	= SM3_BLOCK_SIZE,
+	.base.cra_module	= THIS_MODULE,
+	.digestsize		= SM3_DIGEST_SIZE,
+	.init			= crypto_sm3_init,
+	.update			= crypto_sm3_update,
+	.final			= crypto_sm3_final,
+	.digest			= crypto_sm3_digest,
+	.export_core		= crypto_sm3_export_core,
+	.import_core		= crypto_sm3_import_core,
+	.descsize		= sizeof(struct sm3_ctx),
+};
+
+static int __init crypto_sm3_mod_init(void)
+{
+	return crypto_register_shash(&sm3_alg);
+}
+module_init(crypto_sm3_mod_init);
+
+static void __exit crypto_sm3_mod_exit(void)
+{
+	crypto_unregister_shash(&sm3_alg);
+}
+module_exit(crypto_sm3_mod_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Crypto API support for SM3");
+
+MODULE_ALIAS_CRYPTO("sm3");
+MODULE_ALIAS_CRYPTO("sm3-lib");