From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- scripts/kconfig/qconf.h | 273 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 273 insertions(+) create mode 100644 scripts/kconfig/qconf.h (limited to 'scripts/kconfig/qconf.h') diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h new file mode 100644 index 000000000..ab4e51f12 --- /dev/null +++ b/scripts/kconfig/qconf.h @@ -0,0 +1,273 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 Roman Zippel + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "expr.h" + +class ConfigList; +class ConfigItem; +class ConfigMainWindow; + +class ConfigSettings : public QSettings { +public: + ConfigSettings(); + ~ConfigSettings(void); + QList readSizes(const QString& key, bool *ok); + bool writeSizes(const QString& key, const QList& value); +}; + +enum colIdx { + promptColIdx, nameColIdx, dataColIdx +}; +enum listMode { + singleMode, menuMode, symbolMode, fullMode, listMode +}; +enum optionMode { + normalOpt = 0, allOpt, promptOpt +}; + +class ConfigList : public QTreeWidget { + Q_OBJECT + typedef class QTreeWidget Parent; +public: + ConfigList(QWidget *parent, const char *name = 0); + ~ConfigList(); + void reinit(void); + ConfigItem* findConfigItem(struct menu *); + void setSelected(QTreeWidgetItem *item, bool enable) { + for (int i = 0; i < selectedItems().size(); i++) + selectedItems().at(i)->setSelected(false); + + item->setSelected(enable); + } + +protected: + void keyPressEvent(QKeyEvent *e); + void mouseReleaseEvent(QMouseEvent *e); + void mouseDoubleClickEvent(QMouseEvent *e); + void focusInEvent(QFocusEvent *e); + void contextMenuEvent(QContextMenuEvent *e); + +public slots: + void setRootMenu(struct menu *menu); + + void updateList(); + void setValue(ConfigItem* item, tristate val); + void changeValue(ConfigItem* item); + void updateSelection(void); + void saveSettings(void); + void setOptionMode(QAction *action); + void setShowName(bool on); + +signals: + void menuChanged(struct menu *menu); + void menuSelected(struct menu *menu); + void itemSelected(struct menu *menu); + void parentSelected(void); + void gotFocus(struct menu *); + void showNameChanged(bool on); + +public: + void updateListAll(void) + { + updateAll = true; + updateList(); + updateAll = false; + } + void setAllOpen(bool open); + void setParentMenu(void); + + bool menuSkip(struct menu *); + + void updateMenuList(ConfigItem *parent, struct menu*); + void updateMenuList(struct menu *menu); + + bool updateAll; + + bool showName; + enum listMode mode; + enum optionMode optMode; + struct menu *rootEntry; + QPalette disabledColorGroup; + QPalette inactivedColorGroup; + QMenu* headerPopup; + + static QList allLists; + static void updateListForAll(); + static void updateListAllForAll(); + + static QAction *showNormalAction, *showAllAction, *showPromptAction; +}; + +class ConfigItem : public QTreeWidgetItem { + typedef class QTreeWidgetItem Parent; +public: + ConfigItem(ConfigList *parent, ConfigItem *after, struct menu *m) + : Parent(parent, after), nextItem(0), menu(m), goParent(false) + { + init(); + } + ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m) + : Parent(parent, after), nextItem(0), menu(m), goParent(false) + { + init(); + } + ConfigItem(ConfigList *parent, ConfigItem *after) + : Parent(parent, after), nextItem(0), menu(0), goParent(true) + { + init(); + } + ~ConfigItem(void); + void init(void); + void updateMenu(void); + void testUpdateMenu(void); + ConfigList* listView() const + { + return (ConfigList*)Parent::treeWidget(); + } + ConfigItem* firstChild() const + { + return (ConfigItem *)Parent::child(0); + } + ConfigItem* nextSibling() + { + ConfigItem *ret = NULL; + ConfigItem *_parent = (ConfigItem *)parent(); + + if(_parent) { + ret = (ConfigItem *)_parent->child(_parent->indexOfChild(this)+1); + } else { + QTreeWidget *_treeWidget = treeWidget(); + ret = (ConfigItem *)_treeWidget->topLevelItem(_treeWidget->indexOfTopLevelItem(this)+1); + } + + return ret; + } + // TODO: Implement paintCell + + ConfigItem* nextItem; + struct menu *menu; + bool goParent; + + static QIcon symbolYesIcon, symbolModIcon, symbolNoIcon; + static QIcon choiceYesIcon, choiceNoIcon; + static QIcon menuIcon, menubackIcon; +}; + +class ConfigItemDelegate : public QStyledItemDelegate +{ +private: + struct menu *menu; +public: + ConfigItemDelegate(QObject *parent = nullptr) + : QStyledItemDelegate(parent) {} + QWidget *createEditor(QWidget *parent, + const QStyleOptionViewItem &option, + const QModelIndex &index) const override; + void setModelData(QWidget *editor, QAbstractItemModel *model, + const QModelIndex &index) const override; +}; + +class ConfigInfoView : public QTextBrowser { + Q_OBJECT + typedef class QTextBrowser Parent; + QMenu *contextMenu; +public: + ConfigInfoView(QWidget* parent, const char *name = 0); + bool showDebug(void) const { return _showDebug; } + +public slots: + void setInfo(struct menu *menu); + void saveSettings(void); + void setShowDebug(bool); + void clicked (const QUrl &url); + +signals: + void showDebugChanged(bool); + void menuSelected(struct menu *); + +protected: + void symbolInfo(void); + void menuInfo(void); + QString debug_info(struct symbol *sym); + static QString print_filter(const QString &str); + static void expr_print_help(void *data, struct symbol *sym, const char *str); + void contextMenuEvent(QContextMenuEvent *event); + + struct symbol *sym; + struct menu *_menu; + bool _showDebug; +}; + +class ConfigSearchWindow : public QDialog { + Q_OBJECT + typedef class QDialog Parent; +public: + ConfigSearchWindow(ConfigMainWindow *parent); + +public slots: + void saveSettings(void); + void search(void); + +protected: + QLineEdit* editField; + QPushButton* searchButton; + QSplitter* split; + ConfigList *list; + ConfigInfoView* info; + + struct symbol **result; +}; + +class ConfigMainWindow : public QMainWindow { + Q_OBJECT + + QString configname; + static QAction *saveAction; + static void conf_changed(bool); +public: + ConfigMainWindow(void); +public slots: + void changeMenu(struct menu *); + void changeItens(struct menu *); + void setMenuLink(struct menu *); + void listFocusChanged(void); + void goBack(void); + void loadConfig(void); + bool saveConfig(void); + void saveConfigAs(void); + void searchConfig(void); + void showSingleView(void); + void showSplitView(void); + void showFullView(void); + void showIntro(void); + void showAbout(void); + void saveSettings(void); + +protected: + void closeEvent(QCloseEvent *e); + + ConfigSearchWindow *searchWindow; + ConfigList *menuList; + ConfigList *configList; + ConfigInfoView *helpText; + QAction *backAction; + QAction *singleViewAction; + QAction *splitViewAction; + QAction *fullViewAction; + QSplitter *split1; + QSplitter *split2; +}; -- cgit v1.3.1