From: Joonwon Kang <kjw1627@gmail.com> To: keescook@chromium.org Cc: re.emese@gmail.com, kernel-hardening@lists.openwall.com, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, jinb.park7@gmail.com Subject: [PATCH 1/2] randstruct: fix a bug in is_pure_ops_struct() Date: Thu, 1 Aug 2019 03:01:10 +0900 [thread overview] Message-ID: <2ba5ebfa2c622ece4952b5068b4154213794e5c4.1564595346.git.kjw1627@gmail.com> (raw) In-Reply-To: <cover.1564595346.git.kjw1627@gmail.com> Before this, there were false negatives in the case where a struct contains other structs which contain only function pointers because of unreachable code in is_pure_ops_struct(). Signed-off-by: Joonwon Kang <kjw1627@gmail.com> --- scripts/gcc-plugins/randomize_layout_plugin.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c index 6d5bbd31db7f..bd29e4e7a524 100644 --- a/scripts/gcc-plugins/randomize_layout_plugin.c +++ b/scripts/gcc-plugins/randomize_layout_plugin.c @@ -443,13 +443,13 @@ static int is_pure_ops_struct(const_tree node) if (node == fieldtype) continue; - if (!is_fptr(fieldtype)) - return 0; - - if (code != RECORD_TYPE && code != UNION_TYPE) + if (code == RECORD_TYPE || code == UNION_TYPE) { + if (!is_pure_ops_struct(fieldtype)) + return 0; continue; + } - if (!is_pure_ops_struct(fieldtype)) + if (!is_fptr(fieldtype)) return 0; } -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Joonwon Kang <kjw1627@gmail.com> To: keescook@chromium.org Cc: re.emese@gmail.com, kernel-hardening@lists.openwall.com, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, jinb.park7@gmail.com Subject: [PATCH 1/2] randstruct: fix a bug in is_pure_ops_struct() Date: Wed, 31 Jul 2019 18:01:10 +0000 [thread overview] Message-ID: <2ba5ebfa2c622ece4952b5068b4154213794e5c4.1564595346.git.kjw1627@gmail.com> (raw) In-Reply-To: <cover.1564595346.git.kjw1627@gmail.com> Before this, there were false negatives in the case where a struct contains other structs which contain only function pointers because of unreachable code in is_pure_ops_struct(). Signed-off-by: Joonwon Kang <kjw1627@gmail.com> --- scripts/gcc-plugins/randomize_layout_plugin.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c index 6d5bbd31db7f..bd29e4e7a524 100644 --- a/scripts/gcc-plugins/randomize_layout_plugin.c +++ b/scripts/gcc-plugins/randomize_layout_plugin.c @@ -443,13 +443,13 @@ static int is_pure_ops_struct(const_tree node) if (node = fieldtype) continue; - if (!is_fptr(fieldtype)) - return 0; - - if (code != RECORD_TYPE && code != UNION_TYPE) + if (code = RECORD_TYPE || code = UNION_TYPE) { + if (!is_pure_ops_struct(fieldtype)) + return 0; continue; + } - if (!is_pure_ops_struct(fieldtype)) + if (!is_fptr(fieldtype)) return 0; } -- 2.17.1
next prev parent reply other threads:[~2019-07-31 18:01 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-31 18:00 [PATCH 0/2] fix is_pure_ops_struct() Joonwon Kang 2019-07-31 18:00 ` Joonwon Kang 2019-07-31 18:01 ` Joonwon Kang [this message] 2019-07-31 18:01 ` [PATCH 1/2] randstruct: fix a bug in is_pure_ops_struct() Joonwon Kang 2019-07-31 19:58 ` Kees Cook 2019-07-31 19:58 ` Kees Cook 2019-07-31 18:01 ` [PATCH 2/2] randstruct: remove dead code " Joonwon Kang 2019-07-31 18:01 ` Joonwon Kang 2019-07-31 19:59 ` Kees Cook 2019-07-31 19:59 ` Kees Cook 2019-08-01 13:41 ` Joonwon Kang 2019-08-01 13:41 ` Joonwon Kang
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