diff --git a/pkg/sentry/fsutil/BUILD b/pkg/sentry/fsutil/BUILD
index 4a3b1624f..6d57175b9 100644
--- a/pkg/sentry/fsutil/BUILD
+++ b/pkg/sentry/fsutil/BUILD
@@ -1,11 +1,26 @@
 load("//tools:defs.bzl", "go_library", "go_test")
 load("//tools/go_generics:defs.bzl", "go_template_instance")
+load("//pkg/sync/locking:locking.bzl", "declare_mutex")
 
 package(
     default_applicable_licenses = ["//:license"],
     licenses = ["notice"],
 )
 
+declare_mutex(
+    name = "refs_mutex",
+    out = "refs_mutex.go",
+    package = "fsutil",
+    prefix = "refs",
+)
+
+declare_mutex(
+    name = "maps_mutex",
+    out = "maps_mutex.go",
+    package = "fsutil",
+    prefix = "maps",
+)
+
 go_template_instance(
     name = "dirty_set_impl",
     out = "dirty_set_impl.go",
@@ -70,6 +85,8 @@ go_library(
         "host_file_mapper.go",
         "host_file_mapper_state.go",
         "host_file_mapper_unsafe.go",
+        "maps_mutex.go",
+        "refs_mutex.go",
     ],
     visibility = ["//pkg/sentry:internal"],
     deps = [
@@ -88,6 +105,7 @@ go_library(
         "//pkg/sentry/usage",
         "//pkg/state",
         "//pkg/sync",
+        "//pkg/sync/locking",
         "//pkg/usermem",
         "//pkg/waiter",
         "@org_golang_x_sys//unix:go_default_library",
diff --git a/pkg/sentry/fsutil/host_file_mapper.go b/pkg/sentry/fsutil/host_file_mapper.go
index 7849069da..456bf9b53 100644
--- a/pkg/sentry/fsutil/host_file_mapper.go
+++ b/pkg/sentry/fsutil/host_file_mapper.go
@@ -22,7 +22,6 @@ import (
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/safemem"
 	"gvisor.dev/gvisor/pkg/sentry/memmap"
-	"gvisor.dev/gvisor/pkg/sync"
 )
 
 // HostFileMapper caches mappings of an arbitrary host file descriptor. It is
@@ -35,13 +34,13 @@ type HostFileMapper struct {
 	// size and alignment chunkSize, and caches mappings of the file on a chunk
 	// granularity.
 
-	refsMu sync.Mutex `state:"nosave"`
+	refsMu refsMutex `state:"nosave"`
 
 	// refs maps chunk start offsets to the sum of reference counts for all
 	// pages in that chunk. refs is protected by refsMu.
 	refs map[uint64]int32
 
-	mapsMu sync.Mutex `state:"nosave"`
+	mapsMu mapsMutex `state:"nosave"`
 
 	// mappings maps chunk start offsets to mappings of those chunks,
 	// obtained by calling unix.Mmap. mappings is protected by
diff --git a/pkg/sentry/kernel/BUILD b/pkg/sentry/kernel/BUILD
index e78262e66..a1b5da7a8 100644
--- a/pkg/sentry/kernel/BUILD
+++ b/pkg/sentry/kernel/BUILD
@@ -36,6 +36,13 @@ declare_mutex(
     prefix = "task",
 )
 
+declare_mutex(
+    name = "task_work_mutex",
+    out = "task_work_mutex.go",
+    package = "kernel",
+    prefix = "taskWork",
+)
+
 declare_mutex(
     name = "cgroup_mutex",
     out = "cgroup_mutex.go",
@@ -261,6 +268,7 @@ go_library(
         "task_syscall.go",
         "task_usermem.go",
         "task_work.go",
+        "task_work_mutex.go",
         "taskset_mutex.go",
         "thread_group.go",
         "thread_group_timer_mutex.go",
diff --git a/pkg/sentry/kernel/fasync/BUILD b/pkg/sentry/kernel/fasync/BUILD
index e4517b2da..33c74e84e 100644
--- a/pkg/sentry/kernel/fasync/BUILD
+++ b/pkg/sentry/kernel/fasync/BUILD
@@ -1,13 +1,32 @@
 load("//tools:defs.bzl", "go_library")
+load("//pkg/sync/locking:locking.bzl", "declare_mutex")
 
 package(
     default_applicable_licenses = ["//:license"],
     licenses = ["notice"],
 )
 
+declare_mutex(
+    name = "reg_mutex",
+    out = "reg_mutex.go",
+    package = "fasync",
+    prefix = "reg",
+)
+
+declare_mutex(
+    name = "file_mutex",
+    out = "file_mutex.go",
+    package = "fasync",
+    prefix = "file",
+)
+
 go_library(
     name = "fasync",
-    srcs = ["fasync.go"],
+    srcs = [
+        "fasync.go",
+        "file_mutex.go",
+        "reg_mutex.go",
+    ],
     visibility = ["//:sandbox"],
     deps = [
         "//pkg/abi/linux",
@@ -16,6 +35,7 @@ go_library(
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/vfs",
         "//pkg/sync",
+        "//pkg/sync/locking",
         "//pkg/waiter",
     ],
 )
diff --git a/pkg/sentry/kernel/fasync/fasync.go b/pkg/sentry/kernel/fasync/fasync.go
index b682f5898..c8c7e6325 100644
--- a/pkg/sentry/kernel/fasync/fasync.go
+++ b/pkg/sentry/kernel/fasync/fasync.go
@@ -21,7 +21,6 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/waiter"
 )
 
@@ -67,12 +66,12 @@ type FileAsync struct {
 	// through the registration action itself.
 	//
 	// Lock ordering: regMu, mu.
-	regMu sync.Mutex `state:"nosave"`
+	regMu regMutex `state:"nosave"`
 
 	// mu protects all following fields.
 	//
 	// Lock ordering: e.mu, mu.
-	mu         sync.Mutex `state:"nosave"`
+	mu         fileMutex `state:"nosave"`
 	requester  *auth.Credentials
 	registered bool
 	// signal is the signal to deliver upon I/O being available.
diff --git a/pkg/sentry/kernel/task.go b/pkg/sentry/kernel/task.go
index b9e1eb52e..97516c6c6 100644
--- a/pkg/sentry/kernel/task.go
+++ b/pkg/sentry/kernel/task.go
@@ -74,7 +74,7 @@ type Task struct {
 	taskWorkCount atomicbitops.Int32
 
 	// taskWorkMu protects taskWork.
-	taskWorkMu sync.Mutex `state:"nosave"`
+	taskWorkMu taskWorkMutex `state:"nosave"`
 
 	// taskWork is a queue of work to be executed before resuming user execution.
 	// It is similar to the task_work mechanism in Linux.
diff --git a/pkg/sentry/pgalloc/BUILD b/pkg/sentry/pgalloc/BUILD
index 090f0e143..d0829dd69 100644
--- a/pkg/sentry/pgalloc/BUILD
+++ b/pkg/sentry/pgalloc/BUILD
@@ -1,11 +1,26 @@
 load("//tools:defs.bzl", "go_library", "go_test")
 load("//tools/go_generics:defs.bzl", "go_template_instance")
+load("//pkg/sync/locking:locking.bzl", "declare_mutex")
 
 package(
     default_applicable_licenses = ["//:license"],
     licenses = ["notice"],
 )
 
+declare_mutex(
+    name = "memory_file_mutex",
+    out = "memory_file_mutex.go",
+    package = "pgalloc",
+    prefix = "memoryFile",
+)
+
+declare_mutex(
+    name = "mappings_mutex",
+    out = "mappings_mutex.go",
+    package = "pgalloc",
+    prefix = "mappings",
+)
+
 go_template_instance(
     name = "evictable_range",
     out = "evictable_range.go",
@@ -78,6 +93,8 @@ go_library(
         "context.go",
         "evictable_range.go",
         "evictable_range_set.go",
+        "mappings_mutex.go",
+        "memory_file_mutex.go",
         "pgalloc.go",
         "pgalloc_unsafe.go",
         "reclaim_set.go",
@@ -101,6 +118,7 @@ go_library(
         "//pkg/state",
         "//pkg/state/wire",
         "//pkg/sync",
+        "//pkg/sync/locking",
         "//pkg/usermem",
         "@org_golang_x_sys//unix:go_default_library",
     ],
diff --git a/pkg/sentry/pgalloc/pgalloc.go b/pkg/sentry/pgalloc/pgalloc.go
index 3757fc3eb..30b714c1e 100644
--- a/pkg/sentry/pgalloc/pgalloc.go
+++ b/pkg/sentry/pgalloc/pgalloc.go
@@ -96,7 +96,7 @@ type MemoryFile struct {
 	// file is the backing file. The file pointer is immutable.
 	file *os.File
 
-	mu sync.Mutex
+	mu memoryFileMutex
 
 	// usage maps each page in the file to metadata for that page. Pages for
 	// which no segment exists in usage are both unallocated (not in use) and
@@ -152,7 +152,7 @@ type MemoryFile struct {
 	// only requires *either* holding mappingsMu or using atomic memory
 	// operations. This allows MemoryFile.MapInternal to avoid locking in the
 	// common case where chunk mappings already exist.
-	mappingsMu sync.Mutex
+	mappingsMu mappingsMutex
 	mappings   atomic.Value
 
 	// destroyed is set by Destroy to instruct the reclaimer goroutine to
diff --git a/pkg/sentry/usage/BUILD b/pkg/sentry/usage/BUILD
index 5fac80c28..e142a7698 100644
--- a/pkg/sentry/usage/BUILD
+++ b/pkg/sentry/usage/BUILD
@@ -1,16 +1,25 @@
 load("//tools:defs.bzl", "go_library")
+load("//pkg/sync/locking:locking.bzl", "declare_rwmutex")
 
 package(
     default_applicable_licenses = ["//:license"],
     licenses = ["notice"],
 )
 
+declare_rwmutex(
+    name = "memory_mutex",
+    out = "memory_mutex.go",
+    package = "usage",
+    prefix = "memory",
+)
+
 go_library(
     name = "usage",
     srcs = [
         "cpu.go",
         "io.go",
         "memory.go",
+        "memory_mutex.go",
         "memory_unsafe.go",
         "usage.go",
     ],
@@ -22,6 +31,7 @@ go_library(
         "//pkg/bits",
         "//pkg/memutil",
         "//pkg/sync",
+        "//pkg/sync/locking",
         "@org_golang_x_sys//unix:go_default_library",
     ],
 )
diff --git a/pkg/sentry/usage/memory.go b/pkg/sentry/usage/memory.go
index 9966bd1e1..88c5a0f94 100644
--- a/pkg/sentry/usage/memory.go
+++ b/pkg/sentry/usage/memory.go
@@ -22,7 +22,6 @@ import (
 	"gvisor.dev/gvisor/pkg/atomicbitops"
 	"gvisor.dev/gvisor/pkg/bits"
 	"gvisor.dev/gvisor/pkg/memutil"
-	"gvisor.dev/gvisor/pkg/sync"
 )
 
 // MemoryKind represents a type of memory used by the application.
@@ -118,7 +117,7 @@ type RTMemoryStats struct {
 
 // MemoryLocked is Memory with access methods.
 type MemoryLocked struct {
-	mu sync.RWMutex
+	mu memoryRWMutex
 	// memoryStats records the memory stats.
 	memoryStats
 	// RTMemoryStats records the memory stats that need to be exposed through