rtld: clear any holes in the struct utrace_rtld passed to kernel logger

This should avoid an (almost) false positive from Valgrind, by filling
the padding on LP64.

PR:	284563
Reported by:	Paul Floyd <pjfloyd@wanadoo.fr>
Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D48854

This commit is contained in:

Konstantin Belousov

2025-02-05 00:33:11 +02:00

parent 84e3ffac12

commit e917958c36

1 changed files with 2 additions and 2 deletions

									
										libexec/rtld-elf/rtld.c
									
		+2
		-2
	
												View File
												
				@@ -337,14 +337,14 @@ ld_utrace_log(int event, void *handle, void *mapbase, size_t mapsize,

					struct utrace_rtld ut;

					static const char rtld_utrace_sig[RTLD_UTRACE_SIG_SZ] = RTLD_UTRACE_SIG;

					memset(&ut, 0, sizeof(ut));	/* clear holes */

					memcpy(ut.sig, rtld_utrace_sig, sizeof(ut.sig));

					ut.event = event;

					ut.handle = handle;

					ut.mapbase = mapbase;

					ut.mapsize = mapsize;

					ut.refcnt = refcnt;

					bzero(ut.name, sizeof(ut.name));

					if (name)

					if (name != NULL)

						strlcpy(ut.name, name, sizeof(ut.name));

					utrace(&ut, sizeof(ut));

				}