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objtool/klp: fix data alignment in __clone_symbol()

Commit 356e4b2f5b80 ("objtool: Fix data alignment in elf_add_data()")
corrected the alignment of data within a section (honoring the section's
sh_addralign). Apply the same alignment when klp-diff mode clones a
symbol, adjusting the new symbol's offset for the output section's
sh_addralign.

Fixes: dd590d4d57eb ("objtool/klp: Introduce klp diff subcommand for diffing object files")
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Link: https://patch.msgid.link/20260310203751.1479229-2-joe.lawrence@redhat.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>

authored by

Joe Lawrence and committed by
Josh Poimboeuf 2f2600de f338e773

+2 -1
+2 -1
tools/objtool/klp-diff.c
··· 14 14 #include <objtool/util.h> 15 15 #include <arch/special.h> 16 16 17 + #include <linux/align.h> 17 18 #include <linux/objtool_types.h> 18 19 #include <linux/livepatch_external.h> 19 20 #include <linux/stringify.h> ··· 561 560 } 562 561 563 562 if (!is_sec_sym(patched_sym)) 564 - offset = sec_size(out_sec); 563 + offset = ALIGN(sec_size(out_sec), out_sec->sh.sh_addralign); 565 564 566 565 if (patched_sym->len || is_sec_sym(patched_sym)) { 567 566 void *data = NULL;