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authorEugene Loh <eugene.loh@oracle.com>2019-02-25 22:59:58 +0300
committerJessica Yu <jeyu@kernel.org>2019-03-28 17:00:37 +0300
commit1c7651f43777cdd59c1aaa82c87324d3e7438c7b (patch)
treea58807d49e10a14e300b1ad9d538770178bec762 /kernel/module-internal.h
parent9672e2cb0fbdcb11d64ac43bcb4ee86a76b4221f (diff)
downloadlinux-1c7651f43777cdd59c1aaa82c87324d3e7438c7b.tar.xz
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 <eugene.loh@oracle.com> Reviewed-by: Nick Alcock <nick.alcock@oracle.com> [jeyu: renamed typeoff -> typeoffs ] Signed-off-by: Jessica Yu <jeyu@kernel.org>
Diffstat (limited to 'kernel/module-internal.h')
-rw-r--r--kernel/module-internal.h2
1 files changed, 1 insertions, 1 deletions
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;