From 1c7651f43777cdd59c1aaa82c87324d3e7438c7b Mon Sep 17 00:00:00 2001 From: Eugene Loh Date: Mon, 25 Feb 2019 11:59:58 -0800 Subject: kallsyms: store type information in its own array When a module is loaded, its symbols' Elf_Sym information is stored in a symtab. Further, type information is also captured. Since Elf_Sym has no type field, historically the st_info field has been hijacked for storing type: st_info was overwritten. commit 5439c985c5a83a8419f762115afdf560ab72a452 ("module: Overwrite st_size instead of st_info") changes that practice, as its one-liner indicates. Unfortunately, this change overwrites symbol size, information that a tool like DTrace expects to find. Allocate a typetab array to store type information so that no Elf_Sym field needs to be overwritten. Fixes: 5439c985c5a8 ("module: Overwrite st_size instead of st_info") Signed-off-by: Eugene Loh Reviewed-by: Nick Alcock [jeyu: renamed typeoff -> typeoffs ] Signed-off-by: Jessica Yu --- kernel/module-internal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/module-internal.h') diff --git a/kernel/module-internal.h b/kernel/module-internal.h index 79c9be2dbbe9..d354341f8cc0 100644 --- a/kernel/module-internal.h +++ b/kernel/module-internal.h @@ -20,7 +20,7 @@ struct load_info { unsigned long len; Elf_Shdr *sechdrs; char *secstrings, *strtab; - unsigned long symoffs, stroffs; + unsigned long symoffs, stroffs, init_typeoffs, core_typeoffs; struct _ddebug *debug; unsigned int num_debug; bool sig_ok; -- cgit v1.2.1