Be kind and give some more information on what went wrong.
Signed-off-by: Philipp Rudo <prudo@xxxxxxxxxx>
---
arch/s390/kernel/machine_kexec_file.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c
index 9975ad200d74..b53fa670e289 100644
--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -7,6 +7,8 @@
* Author(s): Philipp Rudo <prudo@xxxxxxxxxxxxxxxxxx>
*/
+#define pr_fmt(fmt) "kexec: " fmt
+
#include <linux/elf.h>
#include <linux/errno.h>
#include <linux/kexec.h>
@@ -304,15 +306,22 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
sym = (void *)pi->ehdr + symtab->sh_offset;
sym += ELF64_R_SYM(relas[i].r_info);
- if (sym->st_shndx == SHN_UNDEF)
+ if (sym->st_shndx == SHN_UNDEF) {
+ pr_err("Undefined symbol\n");
return -ENOEXEC;
+ }
- if (sym->st_shndx == SHN_COMMON)
+ if (sym->st_shndx == SHN_COMMON) {
+ pr_err("symbol in common section\n");
return -ENOEXEC;
+ }
if (sym->st_shndx >= pi->ehdr->e_shnum &&
- sym->st_shndx != SHN_ABS)
+ sym->st_shndx != SHN_ABS) {
+ pr_err("Invalid section %d for symbol\n",
+ sym->st_shndx);
return -ENOEXEC;
+ }
loc = pi->purgatory_buf;
loc += section->sh_offset;
--
2.31.1
