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[v2,04/16] scripts/sorttable: Have the ORC code use the _r() functions to read

Message ID 20250102232649.293540958@goodmis.org (mailing list archive)
State Not Applicable
Headers show
Series scripts/sorttable: ftrace: Remove place holders for weak functions in available_filter_functions | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Steven Rostedt Jan. 2, 2025, 11:26 p.m. UTC 
From: Steven Rostedt <rostedt@goodmis.org>

The ORC code reads the section information directly from the file. This
currently works because the default read function is for 64bit little
endian machines. But if for some reason that ever changes, this will
break. Instead of having a surprise breakage, use the _r() functions that
will read the values from the file properly.

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 scripts/sorttable.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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Patch

diff --git a/scripts/sorttable.h b/scripts/sorttable.h
index aa7a8499a516..7c06a754e31a 100644
--- a/scripts/sorttable.h
+++ b/scripts/sorttable.h
@@ -296,14 +296,14 @@  static int do_sort(Elf_Ehdr *ehdr,
 #if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
 		/* locate the ORC unwind tables */
 		if (!strcmp(secstrings + idx, ".orc_unwind_ip")) {
-			orc_ip_size = s->sh_size;
+			orc_ip_size = _r(&s->sh_size);
 			g_orc_ip_table = (int *)((void *)ehdr +
-						   s->sh_offset);
+						   _r(&s->sh_offset));
 		}
 		if (!strcmp(secstrings + idx, ".orc_unwind")) {
-			orc_size = s->sh_size;
+			orc_size = _r(&s->sh_size);
 			g_orc_table = (struct orc_entry *)((void *)ehdr +
-							     s->sh_offset);
+							     _r(&s->sh_offset));
 		}
 #endif
 	} /* for loop */