diff options
| -rw-r--r-- | fs/proc/vmcore.c | 18 |
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; |