Commit d431ba69 authored by Josh Poimboeuf's avatar Josh Poimboeuf Committed by Greg Kroah-Hartman

objtool: Move objtool_file struct off the stack

commit 0c671812f152b628bd87c0af49da032cc2a2c319 upstream.

Objtool uses over 512k of stack, thanks to the hash table embedded in
the objtool_file struct.  This causes an unnecessarily large stack
allocation and breaks users with low stack limits.

Move the struct off the stack.

Fixes: 042ba73f ("objtool: Add several performance improvements")
Reported-by: default avatarVassili Karpov <>
Signed-off-by: default avatarJosh Poimboeuf <>
Signed-off-by: default avatarThomas Gleixner <>
Cc: Peter Zijlstra <>
Link: default avatarGreg Kroah-Hartman <>
parent 060c8899
......@@ -2132,9 +2132,10 @@ static void cleanup(struct objtool_file *file)
static struct objtool_file file;
int check(const char *_objname, bool orc)
struct objtool_file file;
int ret, warnings = 0;
objname = _objname;
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