The branch stable/13 has been updated by kib:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=25a4a79ccca09a7d0259e393fd7902dacc867b9a

commit 25a4a79ccca09a7d0259e393fd7902dacc867b9a
Author:     Roger Pau MonnĂ© <[email protected]>
AuthorDate: 2021-08-11 14:55:10 +0000
Commit:     Konstantin Belousov <[email protected]>
CommitDate: 2021-08-23 23:21:15 +0000

    loader: fix multiboot loading on UEFI
    
    (cherry picked from commit 5e4279a8f35aa4b46debf728d3f743d64f15aaf8)
---
 stand/common/load_elf.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/stand/common/load_elf.c b/stand/common/load_elf.c
index 9ae91036dbb4..c163b50c9737 100644
--- a/stand/common/load_elf.c
+++ b/stand/common/load_elf.c
@@ -447,7 +447,7 @@ __elfN(loadfile_raw)(char *filename, uint64_t dest,
        *result = (struct preloaded_file *)fp;
        err = 0;
 #ifdef __amd64__
-       fp->f_kernphys_relocatable = is_kernphys_relocatable(&ef);
+       fp->f_kernphys_relocatable = multiboot || is_kernphys_relocatable(&ef);
 #endif
        goto out;
 
@@ -1253,6 +1253,11 @@ __elfN(lookup_symbol)(elf_file_t ef, const char* name, 
Elf_Sym *symp,
        char *strp;
        unsigned long hash;
 
+       if (ef->nbuckets == 0) {
+               printf(__elfN(bad_symtable));
+               return ENOENT;
+       }
+
        hash = elf_hash(name);
        COPYOUT(&ef->buckets[hash % ef->nbuckets], &symnum, sizeof(symnum));
 
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