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-rw-r--r--kexec/crashdump-elf.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/kexec/crashdump-elf.c b/kexec/crashdump-elf.c
index 850087e..dd89180 100644
--- a/kexec/crashdump-elf.c
+++ b/kexec/crashdump-elf.c
@@ -73,6 +73,17 @@ int FUNC(struct kexec_info *info,
sz += sizeof(PHDR);
}
+ /*
+ * Make sure the ELF core header is aligned to at least 1024.
+ * We do this because the secondary kernel gets the ELF core
+ * header address on the kernel command line through the memmap=
+ * option, and this option requires 1k granularity.
+ */
+
+ if (align % ELF_CORE_HEADER_ALIGN) {
+ return -1;
+ }
+
sz += align - 1;
sz &= ~(align - 1);