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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2019-03-18 19:09:38 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-27 14:14:40 +0900 |
| commit | daaeeca918e726bda1681a34196437819821bc7f (patch) | |
| tree | c8fa47c45cde21476c6f4ade3048223b9c1278dc /tools | |
| parent | 37c6f80898060e2db02569aa69c342821d4d81dc (diff) | |
| download | linux-stable-daaeeca918e726bda1681a34196437819821bc7f.tar.gz linux-stable-daaeeca918e726bda1681a34196437819821bc7f.tar.bz2 linux-stable-daaeeca918e726bda1681a34196437819821bc7f.zip | |
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>
Diffstat (limited to 'tools')
| -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 2928939b98ec..550f17611bd7 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2157,9 +2157,10 @@ 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; |