diff --git a/arch/riscv/errata/sifive/errata.c b/arch/riscv/errata/sifive/errata.c
index ef9a4eec0dba6a..da55cb247e8949 100644
--- a/arch/riscv/errata/sifive/errata.c
+++ b/arch/riscv/errata/sifive/errata.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/memory.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/bug.h>
@@ -107,8 +108,10 @@ void __init_or_module sifive_errata_patch_func(struct alt_entry *begin,
 
 		tmp = (1U << alt->errata_id);
 		if (cpu_req_errata & tmp) {
+			mutex_lock(&text_mutex);
 			patch_text_nosync(ALT_OLD_PTR(alt), ALT_ALT_PTR(alt),
 					  alt->alt_len);
+			mutex_lock(&text_mutex);
 			cpu_apply_errata |= tmp;
 		}
 	}
diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c
index 1dd90a5f86f0de..3b96a06d3c5446 100644
--- a/arch/riscv/errata/thead/errata.c
+++ b/arch/riscv/errata/thead/errata.c
@@ -5,6 +5,7 @@
 
 #include <linux/bug.h>
 #include <linux/kernel.h>
+#include <linux/memory.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/uaccess.h>
@@ -101,10 +102,13 @@ void __init_or_module thead_errata_patch_func(struct alt_entry *begin, struct al
 			altptr = ALT_ALT_PTR(alt);
 
 			/* On vm-alternatives, the mmu isn't running yet */
-			if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
+			if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) {
 				memcpy(oldptr, altptr, alt->alt_len);
-			else
+			} else {
+				mutex_lock(&text_mutex);
 				patch_text_nosync(oldptr, altptr, alt->alt_len);
+				mutex_unlock(&text_mutex);
+			}
 		}
 	}
 
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 21fb567e1b227b..59d58ee0f68d6d 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -10,6 +10,7 @@
 #include <linux/ctype.h>
 #include <linux/libfdt.h>
 #include <linux/log2.h>
+#include <linux/memory.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <asm/alternative.h>
@@ -292,8 +293,11 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin,
 
 		oldptr = ALT_OLD_PTR(alt);
 		altptr = ALT_ALT_PTR(alt);
+
+		mutex_lock(&text_mutex);
 		patch_text_nosync(oldptr, altptr, alt->alt_len);
 		riscv_alternative_fix_offsets(oldptr, alt->alt_len, oldptr - altptr);
+		mutex_unlock(&text_mutex);
 	}
 }
 #endif