diff --git a/libc/kernel/tools/generate_uapi_headers.sh b/libc/kernel/tools/generate_uapi_headers.sh
index 4603fbe..575da31 100755
--- a/libc/kernel/tools/generate_uapi_headers.sh
+++ b/libc/kernel/tools/generate_uapi_headers.sh
@@ -248,6 +248,9 @@
 copy_hdrs "${KERNEL_DIR}/${src_dir}/drivers/staging/android/uapi" \
           "${ANDROID_KERNEL_DIR}/uapi/linux" "no-copy-dirs"
 
+# Remove ion.h, it's not fully supported by the upstream kernel (see b/77976082).
+rm "${ANDROID_KERNEL_DIR}/uapi/linux/ion.h"
+
 # Copy the generated headers.
 copy_hdrs "${KERNEL_DIR}/${src_dir}/include/generated/uapi" \
           "${ANDROID_KERNEL_DIR}/uapi"
diff --git a/libc/kernel/uapi/linux/ion.h b/libc/kernel/uapi/linux/ion.h
deleted file mode 100644
index 7c9e6d7..0000000
--- a/libc/kernel/uapi/linux/ion.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef _UAPI_LINUX_ION_H
-#define _UAPI_LINUX_ION_H
-#include <linux/ioctl.h>
-#include <linux/types.h>
-enum ion_heap_type {
-  ION_HEAP_TYPE_SYSTEM,
-  ION_HEAP_TYPE_SYSTEM_CONTIG,
-  ION_HEAP_TYPE_CARVEOUT,
-  ION_HEAP_TYPE_CHUNK,
-  ION_HEAP_TYPE_DMA,
-  ION_HEAP_TYPE_CUSTOM,
-};
-#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
-#define ION_FLAG_CACHED 1
-struct ion_allocation_data {
-  __u64 len;
-  __u32 heap_id_mask;
-  __u32 flags;
-  __u32 fd;
-  __u32 unused;
-};
-#define MAX_HEAP_NAME 32
-struct ion_heap_data {
-  char name[MAX_HEAP_NAME];
-  __u32 type;
-  __u32 heap_id;
-  __u32 reserved0;
-  __u32 reserved1;
-  __u32 reserved2;
-};
-struct ion_heap_query {
-  __u32 cnt;
-  __u32 reserved0;
-  __u64 heaps;
-  __u32 reserved1;
-  __u32 reserved2;
-};
-#define ION_IOC_MAGIC 'I'
-#define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
-#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
-#endif