author: Jann Horn <jannh@google.com> 2020-10-15 20:12:46 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2020-10-16 11:11:21 -0700
commit: afc63a97b764bc5a715762d0d9cc9785c2ef4e75
parent: df0c09c0117300cd03f6e8532527bf591d4eee65
Commit Summary:
Diffstat:
1 file changed, 3 insertions, 15 deletions
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index a53f83830986..76e8c0defdc8 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1534,21 +1534,9 @@ static bool elf_fdpic_dump_segments(struct coredump_params *cprm)
if (!maydump(vma, cprm->mm_flags))
continue;
- for (addr = vma->vm_start; addr < vma->vm_end;
- addr += PAGE_SIZE) {
- bool res;
- struct page *page = get_dump_page(addr);
- if (page) {
- void *kaddr = kmap(page);
- res = dump_emit(cprm, kaddr, PAGE_SIZE);
- kunmap(page);
- put_page(page);
- } else {
- res = dump_skip(cprm, PAGE_SIZE);
- }
- if (!res)
- return false;
- }
+ if (!dump_user_range(cprm, vma->vm_start,
+ vma->vma_end - vma->vm_start))
+ return false;
}
return true;
}