diff --git a/.gitignore b/.gitignore
index 7e2a0c885e..9a7baff23c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,8 @@ rusty-tags.vi
 /testcases/riscv64-linux-musl-native.tgz
 /testcases/gcc/riscv64-linux-musl-native
 /testcases/ZLM/MediaServer
+/testcases/ZLM/ffmpeg
+/testcases/ZLM/lib
 testsuits-x86_64-linux-musl.tgz
 .idea/
 arceos-fada.bin.gz
diff --git a/build_img.sh b/build_img.sh
index 0f00d655a3..2d066f77dd 100755
--- a/build_img.sh
+++ b/build_img.sh
@@ -96,7 +96,7 @@ if [ "$FILE" = "testsuits-x86_64-linux-musl" ] && [ ! -e testcases/$FILE ]; then
 fi
 
 rm -f disk.img
-dd if=/dev/zero of=disk.img bs=4M count=30
+dd if=/dev/zero of=disk.img bs=4M count=90
 
 if [ "$fs" = "ext4" ]; then
 	mkfs.ext4 -t ext4 disk.img
@@ -124,4 +124,4 @@ else
 	sudo umount mnt
 	sudo rm -rf mnt
 	sudo chmod 777 disk.img
-fi
\ No newline at end of file
+fi
diff --git a/platforms/x86_64-qemu-q35.toml b/platforms/x86_64-qemu-q35.toml
index fecf29441b..0348fbf88d 100644
--- a/platforms/x86_64-qemu-q35.toml
+++ b/platforms/x86_64-qemu-q35.toml
@@ -39,7 +39,7 @@ timer-frequency = "4_000_000_000"   # 4.0GHz
 # Testcase memory start address.
 testcase-memory-start = "0x1_8000_0000"
 # Testcase memory size.
-testcase-memory-size = "0x800_0000"
+testcase-memory-size = "0x1700_0000"
 # The base address of the user heap.
 user-heap-base = "0x3FA0_0000"
 # The base address of the user stack. And the stack bottom is `user-stack-top + max-user-stack-size`.
diff --git a/testcases/ZLM/downloads.sh b/testcases/ZLM/downloads.sh
new file mode 100755
index 0000000000..7464b51c2f
--- /dev/null
+++ b/testcases/ZLM/downloads.sh
@@ -0,0 +1,6 @@
+rm -rf lib ffmpeg MediaServer
+git clone https://gitee.com/baiqiaosen/zlm_ffmpeg.git
+mv zlm_ffmpeg/lib ./
+mv zlm_ffmpeg/ffmpeg ./
+mv zlm_ffmpeg/MediaServer ./
+rm -rf zlm_ffmpeg
diff --git a/ulib/axstarry/src/syscall_mem/imp.rs b/ulib/axstarry/src/syscall_mem/imp.rs
index 069d5011a0..6a38e8bf07 100644
--- a/ulib/axstarry/src/syscall_mem/imp.rs
+++ b/ulib/axstarry/src/syscall_mem/imp.rs
@@ -376,3 +376,8 @@ pub fn syscall_shmat(args: [usize; 6]) -> SyscallResult {
 
     Ok(addr.as_usize() as isize)
 }
+
+/// # mlock
+pub fn syscall_mlock(args: [usize; 6]) -> SyscallResult {
+    Ok(0)
+}
diff --git a/ulib/axstarry/src/syscall_mem/mem_syscall_id.rs b/ulib/axstarry/src/syscall_mem/mem_syscall_id.rs
index b880918740..be8c33c8ca 100644
--- a/ulib/axstarry/src/syscall_mem/mem_syscall_id.rs
+++ b/ulib/axstarry/src/syscall_mem/mem_syscall_id.rs
@@ -44,5 +44,6 @@ numeric_enum_macro::numeric_enum! {
         MSYNC = 26,
         MPROTECT = 10,
         MEMBARRIER = 324,
+        MLOCK = 149,
     }
 }
diff --git a/ulib/axstarry/src/syscall_mem/mod.rs b/ulib/axstarry/src/syscall_mem/mod.rs
index 05d225c62f..d1889de28e 100644
--- a/ulib/axstarry/src/syscall_mem/mod.rs
+++ b/ulib/axstarry/src/syscall_mem/mod.rs
@@ -22,6 +22,7 @@ pub fn mem_syscall(syscall_id: mem_syscall_id::MemSyscallId, args: [usize; 6]) -
         SHMGET => syscall_shmget(args),
         SHMCTL => Ok(0),
         SHMAT => syscall_shmat(args),
+        MLOCK => syscall_mlock(args),
         #[allow(unused)]
         _ => {
             panic!("Invalid Syscall Id: {:?}!", syscall_id);