[PATCH kexec-tools v2 04/32] kdump: fix kdump mapping

[Russell King]

When kdump tries to map the program header, it fails to take account
of ehdr->e_phoff being an offset from the start of the ELF "file",
which causes:

Cannot mmap /dev/mem offset: 64 size: 392: Invalid argument

Ensure that we take account of the start address when mapping this.

This fix has been extracted from a larger patch by Vitaly Andrianov
adding support for Keystone 2.

Signed-off-by: Russell King <rmk at arm.linux.org.uk>
---
 kdump/kdump.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kdump/kdump.c b/kdump/kdump.c
index 1f5b984..34d2149 100644
--- a/kdump/kdump.c
+++ b/kdump/kdump.c
@@ -284,7 +284,8 @@ int main(int argc, char **argv)
 	}
 	
 	/* Get the program header */
-	phdr = map_addr(fd, sizeof(*phdr)*(ehdr->e_phnum), ehdr->e_phoff);
+	phdr = map_addr(fd, sizeof(*phdr)*(ehdr->e_phnum), 
+			start_addr + ehdr->e_phoff);
 
 	/* Collect up the notes */
 	note_bytes = 0;
-- 
1.9.1