| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2019-03-19 00:09:38 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-27 05:13:03 (GMT) |
| commit | c818b2facea846407f140e8bb687ccca1947c888 (patch) | |
| tree | 11239dd7e1b6613c536d94b51506b809837d600e | |
| parent | 726c28f30ac16e0d4cab17751b447e4abf61b102 (diff) | |
| download | common-c818b2facea846407f140e8bb687ccca1947c888.zip common-c818b2facea846407f140e8bb687ccca1947c888.tar.gz common-c818b2facea846407f140e8bb687ccca1947c888.tar.bz2 | |
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: 042ba73fe7eb ("objtool: Add several performance improvements")
Reported-by: Vassili Karpov <moosotc@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/df92dcbc4b84b02ffa252f46876df125fb56e2d7.1552954176.git.jpoimboe@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | tools/objtool/check.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index e128d1c..3ff025b 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2132,9 +2132,10 @@ static void cleanup(struct objtool_file *file) elf_close(file->elf); } +static struct objtool_file file; + int check(const char *_objname, bool orc) { - struct objtool_file file; int ret, warnings = 0; objname = _objname; |