[PATCH] makedumpfile: omit those section has 0 size

[Lei Wen]

If the area reserved for the kdump is at the end of system memory, then
it would occur such case that the second sector is turly 0 size. And as
the beginnig of the second sector is already out of system memory range.
Try to access this range, would cause makedumpfile failed.

Signed-off-by: Lei Wen <leiwen at marvell.com>
---
 makedumpfile.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/makedumpfile.c b/makedumpfile.c
index 7d0c663..3f8d9af 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -1336,6 +1336,8 @@ get_elf_info(void)
 		}
 		if (phdr.p_type != PT_LOAD)
 			continue;
+		if (phdr.p_filesz == 0)
+			continue;
 
 		if (j == 0) {
 			info->offset_load_memory = phdr.p_offset;
@@ -5756,6 +5758,8 @@ write_elf_pages(struct cache_data *cd_header, struct cache_data *cd_page)
 
 		if (load.p_type != PT_LOAD)
 			continue;
+		if (load.p_filesz == 0)
+			continue;
 
 		off_memory= load.p_offset;
 		paddr     = load.p_paddr;
-- 
1.7.0.4