Merge tag 'seccomp-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...

[linux-2.6-microblaze.git] / kernel / crash_core.c

diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index da449c1..eb53f5e 100644 (file)
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2002-2004 Eric Biederman  <ebiederm@xmission.com>
  */
 
+#include <linux/buildid.h>
 #include <linux/crash_core.h>
 #include <linux/utsname.h>
 #include <linux/vmalloc.h>
@@ -378,53 +379,6 @@ phys_addr_t __weak paddr_vmcoreinfo_note(void)
 }
 EXPORT_SYMBOL(paddr_vmcoreinfo_note);
 
-#define NOTES_SIZE (&__stop_notes - &__start_notes)
-#define BUILD_ID_MAX SHA1_DIGEST_SIZE
-#define NT_GNU_BUILD_ID 3
-
-struct elf_note_section {
-       struct elf_note n_hdr;
-       u8 n_data[];
-};
-
-/*
- * Add build ID from .notes section as generated by the GNU ld(1)
- * or LLVM lld(1) --build-id option.
- */
-static void add_build_id_vmcoreinfo(void)
-{
-       char build_id[BUILD_ID_MAX * 2 + 1];
-       int n_remain = NOTES_SIZE;
-
-       while (n_remain >= sizeof(struct elf_note)) {
-               const struct elf_note_section *note_sec =
-                       &__start_notes + NOTES_SIZE - n_remain;
-               const u32 n_namesz = note_sec->n_hdr.n_namesz;
-
-               if (note_sec->n_hdr.n_type == NT_GNU_BUILD_ID &&
-                   n_namesz != 0 &&
-                   !strcmp((char *)&note_sec->n_data[0], "GNU")) {
-                       if (note_sec->n_hdr.n_descsz <= BUILD_ID_MAX) {
-                               const u32 n_descsz = note_sec->n_hdr.n_descsz;
-                               const u8 *s = &note_sec->n_data[n_namesz];
-
-                               s = PTR_ALIGN(s, 4);
-                               bin2hex(build_id, s, n_descsz);
-                               build_id[2 * n_descsz] = '\0';
-                               VMCOREINFO_BUILD_ID(build_id);
-                               return;
-                       }
-                       pr_warn("Build ID is too large to include in vmcoreinfo: %u > %u\n",
-                               note_sec->n_hdr.n_descsz,
-                               BUILD_ID_MAX);
-                       return;
-               }
-               n_remain -= sizeof(struct elf_note) +
-                       ALIGN(note_sec->n_hdr.n_namesz, 4) +
-                       ALIGN(note_sec->n_hdr.n_descsz, 4);
-       }
-}
-
 static int __init crash_save_vmcoreinfo_init(void)
 {
        vmcoreinfo_data = (unsigned char *)get_zeroed_page(GFP_KERNEL);
@@ -443,7 +397,7 @@ static int __init crash_save_vmcoreinfo_init(void)
        }
 
        VMCOREINFO_OSRELEASE(init_uts_ns.name.release);
-       add_build_id_vmcoreinfo();
+       VMCOREINFO_BUILD_ID();
        VMCOREINFO_PAGESIZE(PAGE_SIZE);
 
        VMCOREINFO_SYMBOL(init_uts_ns);