50 lines
1.9 KiB
Diff
50 lines
1.9 KiB
Diff
Downstream-only patch to move the recently added members (from
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glibc-rh2047981-5.patch and glibc-rh2047981-6.patch) to the end
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of _rtld_global_ro. This avoids changing the offset of
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GLRO (dl_naudit).
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Without this change, the audit invocation loop in the old
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__libc_start_main function in a not-yet-updated version of libc.so.6
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reads a non-zero garbage value for GLRO (dl_naudit), assumes that
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auditing is active, and reads further garbage pointers, leading to
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to a crash. Preserving the old offset of GLRO (dl_naudit) avoids
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that. This works because RPM updates /lib64/ld-* before
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/lib64/libc.so.6 because it sorts earlier (except on POWER9 due
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to the glibc-hwcaps/power9 multilib).
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diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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index 9dec9e3d3b6d6aa2..5e56550a4d556fa7 100644
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--- a/sysdeps/generic/ldsodefs.h
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+++ b/sysdeps/generic/ldsodefs.h
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@@ -648,6 +648,15 @@ struct rtld_global_ro
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void *(*_dl_open) (const char *file, int mode, const void *caller_dlopen,
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Lmid_t nsid, int argc, char *argv[], char *env[]);
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void (*_dl_close) (void *map);
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+ void *(*_dl_tls_get_addr_soft) (struct link_map *);
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+#ifdef HAVE_DL_DISCOVER_OSVERSION
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+ int (*_dl_discover_osversion) (void);
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+#endif
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+
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+ /* List of auditing interfaces. */
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+ struct audit_ifaces *_dl_audit;
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+ unsigned int _dl_naudit;
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+
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/* libdl in a secondary namespace (after dlopen) must use
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_dl_catch_error from the main namespace, so it has to be
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exported in some way. */
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@@ -657,14 +666,6 @@ struct rtld_global_ro
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/* libdl in a secondary namespace must use free from the base
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namespace. */
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void (*_dl_error_free) (void *);
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- void *(*_dl_tls_get_addr_soft) (struct link_map *);
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-#ifdef HAVE_DL_DISCOVER_OSVERSION
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- int (*_dl_discover_osversion) (void);
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-#endif
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-
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- /* List of auditing interfaces. */
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- struct audit_ifaces *_dl_audit;
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- unsigned int _dl_naudit;
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};
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# define __rtld_global_attribute__
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# if IS_IN (rtld)
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