tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 21ef7b1e17d039053edaeaf41142423810572741 commit: fee8feb67f0b2954eb7a2a259122e43a15cf3a52 [8173/8441] list_debug: introduce CONFIG_DEBUG_LIST_MINIMAL config: hexagon-randconfig-r041-20230808 (https://download.01.org/0day-ci/archive/20230809/202308091820.0dPY7D6f-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20230809/202308091820.0dPY7D6f-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308091820.0dPY7D6f-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from arch/hexagon/kernel/asm-offsets.c:12: In file included from include/linux/compat.h:14: In file included from include/linux/sem.h:5: In file included from include/uapi/linux/sem.h:5: In file included from include/linux/ipc.h:5: In file included from include/linux/spinlock.h:56: In file included from include/linux/preempt.h:12: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from arch/hexagon/kernel/asm-offsets.c:12: In file included from include/linux/compat.h:14: In file included from include/linux/sem.h:5: In file included from include/uapi/linux/sem.h:5: In file included from include/linux/ipc.h:5: In file included from include/linux/spinlock.h:56: In file included from include/linux/preempt.h:12: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from arch/hexagon/kernel/asm-offsets.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from arch/hexagon/kernel/asm-offsets.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from arch/hexagon/kernel/asm-offsets.c:15: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ 8 warnings generated. -- In file included from lib/idr.c:5: In file included from include/linux/idr.h:15: In file included from include/linux/radix-tree.h:13: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/idr.c:5: In file included from include/linux/idr.h:15: In file included from include/linux/radix-tree.h:13: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ 2 warnings generated. -- In file included from lib/maple_tree.c:54: In file included from include/linux/maple_tree.h:12: In file included from include/linux/rcupdate.h:27: In file included from include/linux/preempt.h:12: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/maple_tree.c:54: In file included from include/linux/maple_tree.h:12: In file included from include/linux/rcupdate.h:27: In file included from include/linux/preempt.h:12: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/maple_tree.c:63: In file included from include/trace/events/maple_tree.h:123: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from lib/maple_tree.c:63: In file included from include/trace/events/maple_tree.h:123: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from lib/maple_tree.c:63: In file included from include/trace/events/maple_tree.h:123: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ lib/maple_tree.c:331:21: warning: unused function 'mte_set_full' [-Wunused-function] static inline void *mte_set_full(const struct maple_enode *node) ^ lib/maple_tree.c:336:21: warning: unused function 'mte_clear_full' [-Wunused-function] static inline void *mte_clear_full(const struct maple_enode *node) ^ lib/maple_tree.c:341:20: warning: unused function 'mte_has_null' [-Wunused-function] static inline bool mte_has_null(const struct maple_enode *node) ^ lib/maple_tree.c:672:29: warning: unused function 'mas_pivot' [-Wunused-function] static inline unsigned long mas_pivot(struct ma_state *mas, unsigned char piv) ^ 12 warnings generated. -- In file included from lib/radix-tree.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:15: In file included from include/linux/dev_printk.h:16: In file included from include/linux/ratelimit.h:6: In file included from include/linux/sched.h:14: In file included from include/linux/pid.h:5: In file included from include/linux/rculist.h:10: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/radix-tree.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:15: In file included from include/linux/dev_printk.h:16: In file included from include/linux/ratelimit.h:6: In file included from include/linux/sched.h:14: In file included from include/linux/pid.h:5: In file included from include/linux/rculist.h:10: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ lib/radix-tree.c:1136:50: warning: parameter 'slot' set but not used [-Wunused-but-set-parameter] void __rcu **radix_tree_iter_resume(void __rcu **slot, ^ 3 warnings generated. -- In file included from lib/test_ida.c:9: In file included from include/linux/idr.h:15: In file included from include/linux/radix-tree.h:13: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/test_ida.c:9: In file included from include/linux/idr.h:15: In file included from include/linux/radix-tree.h:13: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ lib/test_ida.c:16:6: warning: no previous prototype for function 'ida_dump' [-Wmissing-prototypes] void ida_dump(struct ida *ida) { } ^ lib/test_ida.c:16:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void ida_dump(struct ida *ida) { } ^ static 3 warnings generated. -- In file included from lib/list_debug.c:9: >> include/linux/list.h:53:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ In file included from lib/list_debug.c:9: include/linux/list.h:96:13: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] extern bool __list_valid_slowpath __list_del_entry_valid_or_report(struct list_head *entry); ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ >> lib/list_debug.c:20:1: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] __list_valid_slowpath ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ lib/list_debug.c:43:1: warning: '__preserve_most__' calling convention is not supported for this target [-Wignored-attributes] __list_valid_slowpath ^ include/linux/list.h:44:39: note: expanded from macro '__list_valid_slowpath' # define __list_valid_slowpath __cold __preserve_most ^ include/linux/compiler_types.h:132:49: note: expanded from macro '__preserve_most' # define __preserve_most notrace __attribute__((__preserve_most__)) ^ 4 warnings generated. .. vim +/__preserve_most__ +53 include/linux/list.h 48 49 /* 50 * Performs the full set of list corruption checks before __list_add(). 51 * On list corruption reports a warning, and returns false. 52 */ > 53 extern bool __list_valid_slowpath __list_add_valid_or_report(struct list_head *new, 54 struct list_head *prev, 55 struct list_head *next); 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