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-rw-r--r--fs/proc/vmcore.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 9b9270eb0599..1082492e02fc 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -369,6 +369,7 @@ static int __init merge_note_headers_elf64(char *elfptr, size_t *elfsz,
Elf64_Ehdr *ehdr_ptr;
Elf64_Phdr phdr;
u64 phdr_sz = 0, note_off;
+ struct vm_struct *vm;
ehdr_ptr = (Elf64_Ehdr *)elfptr;
@@ -385,6 +386,14 @@ static int __init merge_note_headers_elf64(char *elfptr, size_t *elfsz,
if (!*notes_buf)
return -ENOMEM;
+ /*
+ * Allow users to remap ELF note segment buffer on vmalloc memory using
+ * remap_vmalloc_range.()
+ */
+ vm = find_vm_area(*notes_buf);
+ BUG_ON(!vm);
+ vm->flags |= VM_USERMAP;
+
rc = copy_notes_elf64(ehdr_ptr, *notes_buf);
if (rc < 0)
return rc;
@@ -548,6 +557,7 @@ static int __init merge_note_headers_elf32(char *elfptr, size_t *elfsz,
Elf32_Ehdr *ehdr_ptr;
Elf32_Phdr phdr;
u64 phdr_sz = 0, note_off;
+ struct vm_struct *vm;
ehdr_ptr = (Elf32_Ehdr *)elfptr;
@@ -564,6 +574,14 @@ static int __init merge_note_headers_elf32(char *elfptr, size_t *elfsz,
if (!*notes_buf)
return -ENOMEM;
+ /*
+ * Allow users to remap ELF note segment buffer on vmalloc memory using
+ * remap_vmalloc_range()
+ */
+ vm = find_vm_area(*notes_buf);
+ BUG_ON(!vm);
+ vm->flags |= VM_USERMAP;
+
rc = copy_notes_elf32(ehdr_ptr, *notes_buf);
if (rc < 0)
return rc;