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| author | Eugene Loh <eugene.loh@oracle.com> | 2019-02-25 22:59:58 +0300 |
|---|---|---|
| committer | Jessica Yu <jeyu@kernel.org> | 2019-03-28 17:00:37 +0300 |
| commit | 1c7651f43777cdd59c1aaa82c87324d3e7438c7b (patch) | |
| tree | a58807d49e10a14e300b1ad9d538770178bec762 /kernel/module-internal.h | |
| parent | 9672e2cb0fbdcb11d64ac43bcb4ee86a76b4221f (diff) | |
| download | linux-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.h | 2 |
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; |