[PATCH] Ignore PT_NOTE program headers with offset 0.

[Ian Campbell <ian.campbell@xxxxxxxxxxxxx>]

There is a binutils bug which causes PT_NOTE segments to have an offset of
zero (http://sourceware.org/bugzilla/show_bug.cgi?id=594). The fix has not
made it into any release binutils, although several distributions have
backported it.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxxxxx>
---

 kexec/kexec-elf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kexec/kexec-elf.c b/kexec/kexec-elf.c
index 63f5b4c..ce457f2 100644
--- a/kexec/kexec-elf.c
+++ b/kexec/kexec-elf.c
@@ -676,7 +676,7 @@ static int build_mem_notes(const char *buf, off_t len, struct mem_ehdr *ehdr)
 	note_start = note_end = NULL;
 	for(i = 0; !note_start && (i < ehdr->e_phnum); i++) {
 		struct mem_phdr *phdr = &ehdr->e_phdr[i];
-		if (phdr->p_type == PT_NOTE) {
+		if (phdr->p_type == PT_NOTE && phdr->p_offset) {
 			note_start = (unsigned char *)phdr->p_data;
 			note_end = note_start + phdr->p_filesz;
 		}
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