diff --git a/module/zfs/blake3_zfs.c b/module/zfs/blake3_zfs.c
index bcc595bca8f2..7783282b671a 100644
--- a/module/zfs/blake3_zfs.c
+++ b/module/zfs/blake3_zfs.c
@@ -1,117 +1,120 @@
 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License (the "License").
  * You may not use this file except in compliance with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or http://opensource.org/licenses/CDDL-1.0.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 
 /*
  * Copyright 2022 Tino Reichardt <milky-zfs@mcmilk.de>
  */
 
 #include <sys/zfs_context.h>
 #include <sys/zio_checksum.h>
 #include <sys/blake3.h>
 #include <sys/abd.h>
 
 static int
 blake3_incremental(void *buf, size_t size, void *arg)
 {
 	BLAKE3_CTX *ctx = arg;
 
 	Blake3_Update(ctx, buf, size);
 
 	return (0);
 }
 
 /*
  * Computes a native 256-bit BLAKE3 MAC checksum. Please note that this
  * function requires the presence of a ctx_template that should be allocated
  * using abd_checksum_blake3_tmpl_init.
  */
 void
 abd_checksum_blake3_native(abd_t *abd, uint64_t size, const void *ctx_template,
     zio_cksum_t *zcp)
 {
 	ASSERT(ctx_template != NULL);
 
 #if defined(_KERNEL)
-	BLAKE3_CTX *ctx = blake3_per_cpu_ctx[CPU_SEQID_UNSTABLE];
+	kpreempt_disable();
+	BLAKE3_CTX *ctx = blake3_per_cpu_ctx[CPU_SEQID];
 #else
 	BLAKE3_CTX *ctx = kmem_alloc(sizeof (*ctx), KM_SLEEP);
 #endif
 
 	memcpy(ctx, ctx_template, sizeof (*ctx));
 	(void) abd_iterate_func(abd, 0, size, blake3_incremental, ctx);
 	Blake3_Final(ctx, (uint8_t *)zcp);
 
-#if !defined(_KERNEL)
+#if defined(_KERNEL)
+	kpreempt_enable();
+#else
 	memset(ctx, 0, sizeof (*ctx));
 	kmem_free(ctx, sizeof (*ctx));
 #endif
 }
 
 /*
  * Byteswapped version of abd_checksum_blake3_native. This just invokes
  * the native checksum function and byteswaps the resulting checksum (since
  * BLAKE3 is internally endian-insensitive).
  */
 void
 abd_checksum_blake3_byteswap(abd_t *abd, uint64_t size,
     const void *ctx_template, zio_cksum_t *zcp)
 {
 	zio_cksum_t tmp;
 
 	ASSERT(ctx_template != NULL);
 
 	abd_checksum_blake3_native(abd, size, ctx_template, &tmp);
 	zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]);
 	zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]);
 	zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]);
 	zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]);
 }
 
 /*
  * Allocates a BLAKE3 MAC template suitable for using in BLAKE3 MAC checksum
  * computations and returns a pointer to it.
  */
 void *
 abd_checksum_blake3_tmpl_init(const zio_cksum_salt_t *salt)
 {
 	BLAKE3_CTX *ctx;
 
 	ASSERT(sizeof (salt->zcs_bytes) == 32);
 
 	/* init reference object */
 	ctx = kmem_zalloc(sizeof (*ctx), KM_SLEEP);
 	Blake3_InitKeyed(ctx, salt->zcs_bytes);
 
 	return (ctx);
 }
 
 /*
  * Frees a BLAKE3 context template previously allocated using
  * zio_checksum_blake3_tmpl_init.
  */
 void
 abd_checksum_blake3_tmpl_free(void *ctx_template)
 {
 	BLAKE3_CTX *ctx = ctx_template;
 
 	memset(ctx, 0, sizeof (*ctx));
 	kmem_free(ctx, sizeof (*ctx));
 }