[ammarfaizi2-block:dhowells/linux-fs/netfs-maple 19/40] lib/maple_tree.c:4203:20: warning: stack frame size (1288) exceeds limit (1024) in 'mas_wr_modify'
From: kernel test robot
Date: Tue Apr 05 2022 - 19:17:46 EST
tree: https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-maple
head: 674eea41fc70a740ff83ec590f9833f805852464
commit: 51b63e667ad83864c161cf2b8ef462e907536070 [19/40] Maple Tree: Add new data structure
config: arm-moxart_defconfig (https://download.01.org/0day-ci/archive/20220405/202204051827.GTlRliPg-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/ammarfaizi2/linux-block/commit/51b63e667ad83864c161cf2b8ef462e907536070
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-maple
git checkout 51b63e667ad83864c161cf2b8ef462e907536070
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
lib/maple_tree.c:758:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case maple_dense:
^
lib/maple_tree.c:758:2: note: insert 'break;' to avoid fall-through
case maple_dense:
^
break;
lib/maple_tree.c:5556:6: warning: no previous prototype for function 'mas_wr_store_setup' [-Wmissing-prototypes]
void mas_wr_store_setup(struct ma_wr_state *wr_mas)
^
lib/maple_tree.c:5556:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void mas_wr_store_setup(struct ma_wr_state *wr_mas)
^
static
lib/maple_tree.c:6184:5: warning: no previous prototype for function 'mtree_alloc_range' [-Wmissing-prototypes]
int mtree_alloc_range(struct maple_tree *mt, unsigned long *startp,
^
lib/maple_tree.c:6184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int mtree_alloc_range(struct maple_tree *mt, unsigned long *startp,
^
static
lib/maple_tree.c:6219:5: warning: no previous prototype for function 'mtree_alloc_rrange' [-Wmissing-prototypes]
int mtree_alloc_rrange(struct maple_tree *mt, unsigned long *startp,
^
lib/maple_tree.c:6219:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int mtree_alloc_rrange(struct maple_tree *mt, unsigned long *startp,
^
static
lib/maple_tree.c:76:28: warning: unused variable 'mt_max' [-Wunused-const-variable]
static const unsigned long mt_max[] = {
^
lib/maple_tree.c:317:20: warning: unused function 'mte_set_full' [-Wunused-function]
static inline void mte_set_full(const struct maple_enode *node)
^
lib/maple_tree.c:322:20: warning: unused function 'mte_clear_full' [-Wunused-function]
static inline void mte_clear_full(const struct maple_enode *node)
^
lib/maple_tree.c:832:35: warning: unused function 'mas_get_slot' [-Wunused-function]
static inline struct maple_enode *mas_get_slot(struct ma_state *mas,
^
lib/maple_tree.c:4608:19: warning: unused function 'mas_dead_node' [-Wunused-function]
static inline int mas_dead_node(struct ma_state *mas, unsigned long index)
^
lib/maple_tree.c:4630:21: warning: unused function 'mas_first_entry' [-Wunused-function]
static inline void *mas_first_entry(struct ma_state *mas, struct maple_node *mn,
^
lib/maple_tree.c:3863:19: warning: stack frame size (1040) exceeds limit (1024) in 'mas_wr_spanning_store' [-Wframe-larger-than]
static inline int mas_wr_spanning_store(struct ma_wr_state *wr_mas)
^
>> lib/maple_tree.c:4203:20: warning: stack frame size (1288) exceeds limit (1024) in 'mas_wr_modify' [-Wframe-larger-than]
static inline void mas_wr_modify(struct ma_wr_state *wr_mas)
^
12 warnings generated.
vim +/mas_wr_modify +4203 lib/maple_tree.c
4202
> 4203 static inline void mas_wr_modify(struct ma_wr_state *wr_mas)
4204 {
4205 unsigned char zero;
4206 unsigned char node_slots;
4207 struct ma_state *mas = wr_mas->mas;
4208 struct maple_big_node b_node;
4209
4210 /* Direct replacement */
4211 if (wr_mas->r_min == mas->index && wr_mas->r_max == mas->last) {
4212 rcu_assign_pointer(wr_mas->slots[mas->offset], wr_mas->entry);
4213 if (!!wr_mas->entry ^ !!wr_mas->content)
4214 mas_update_gap(mas);
4215 return;
4216 }
4217
4218 /* Attempt to append */
4219 node_slots = mt_slots[wr_mas->type];
4220 /* slot and node store will not fit, go to the slow path */
4221 if (unlikely(wr_mas->offset_end + 1 >= node_slots))
4222 goto slow_path;
4223
4224 if (wr_mas->entry && (wr_mas->node_end < node_slots - 1) &&
4225 (mas->offset == wr_mas->node_end) && mas_wr_append(wr_mas)) {
4226 if (!wr_mas->content || !wr_mas->entry)
4227 mas_update_gap(mas);
4228 return;
4229 }
4230
4231 if ((wr_mas->offset_end - mas->offset <= 1) && mas_wr_slot_store(wr_mas))
4232 return;
4233 else if (mas_wr_node_store(wr_mas))
4234 return;
4235
4236 if (mas_is_err(mas))
4237 return;
4238
4239 slow_path:
4240 b_node.b_end = mas_store_b_node(wr_mas, &b_node, wr_mas->offset_end);
4241 b_node.min = mas->min;
4242 zero = MAPLE_BIG_NODE_SLOTS - b_node.b_end - 1;
4243 memset(b_node.slot + b_node.b_end + 1, 0, sizeof(void *) * zero--);
4244 memset(b_node.pivot + b_node.b_end + 1, 0,
4245 sizeof(unsigned long) * zero);
4246
4247 trace_ma_write(__func__, mas, 0, wr_mas->entry);
4248 mas_commit_b_node(mas, &b_node, wr_mas->node_end);
4249 }
4250
--
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https://01.org/lkp