-Wframe-larger-than= if KASAN_STACK is enabled

[nickdesaulniers]

Probably from CONFIG_KASAN=y but at least two instances:

  CC      fs/ext4/inode.o
fs/ext4/inode.c:53:14: warning: stack frame size of 2688 bytes in function 'ext4_inode_csum' [-Wframe-larger-than=]
static __u32 ext4_inode_csum(struct inode *inode, struct ext4_inode *raw,
             ^
  CC      fs/f2fs/inode.o
fs/f2fs/inode.c:137:14: warning: stack frame size of 2304 bytes in function 'f2fs_inode_chksum' [-Wframe-larger-than=]
static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
             ^

[nickdesaulniers]

  CC      fs/jbd2/commit.o
fs/jbd2/commit.c:344:6: warning: stack frame size of 2304 bytes in function
      'jbd2_journal_commit_transaction' [-Wframe-larger-than=]
void jbd2_journal_commit_transaction(journal_t *journal)
     ^
1 warning generated.
  CC      fs/jbd2/recovery.o
fs/jbd2/recovery.c:416:12: warning: stack frame size of 2688 bytes in function
      'do_one_pass' [-Wframe-larger-than=]
static int do_one_pass(journal_t *journal,
           ^

[nickdesaulniers]

  CC      fs/ocfs2/cluster/heartbeat.o
fs/ocfs2/cluster/heartbeat.c:1212:12: warning: stack frame size of 2144 bytes in
      function 'o2hb_thread' [-Wframe-larger-than=]
static int o2hb_thread(void *data)
           ^
  CC      fs/ocfs2/dlm/dlmdomain.o
fs/ocfs2/dlm/dlmdomain.c:2125:19: warning: stack frame size of 3104 bytes in function
      'dlm_register_domain' [-Wframe-larger-than=]
struct dlm_ctxt * dlm_register_domain(const char *domain,
                  ^
  CC      fs/ocfs2/dlm/dlmrecovery.o
fs/ocfs2/dlm/dlmrecovery.c:301:12: warning: stack frame size of 3872 bytes in function
      'dlm_recovery_thread' [-Wframe-larger-than=]
static int dlm_recovery_thread(void *data)
           ^
fs/ocfs2/dlm/dlmmaster.c:718:28: warning: stack frame size of 2400 bytes in function
      'dlm_get_lock_resource' [-Wframe-larger-than=]
struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
                           ^
  CC      fs/ocfs2/aops.o
fs/ocfs2/aops.c:1672:5: warning: stack frame size of 2336 bytes in function
      'ocfs2_write_begin_nolock' [-Wframe-larger-than=]
int ocfs2_write_begin_nolock(struct address_space *mapping,
    ^
  CC      fs/ocfs2/dir.o
fs/ocfs2/dir.c:4263:5: warning: stack frame size of 2400 bytes in function
      'ocfs2_prepare_dir_for_insert' [-Wframe-larger-than=]
int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
    ^
fs/ocfs2/dir.c:3175:12: warning: stack frame size of 2080 bytes in function
      'ocfs2_extend_dir' [-Wframe-larger-than=]
static int ocfs2_extend_dir(struct ocfs2_super *osb,
           ^
  CC      fs/ocfs2/refcounttree.o
fs/ocfs2/refcounttree.c:4420:5: warning: stack frame size of 2208 bytes in function
      'ocfs2_reflink_ioctl' [-Wframe-larger-than=]
int ocfs2_reflink_ioctl(struct inode *inode,
    ^
  CC      fs/ocfs2/move_extents.o
fs/ocfs2/move_extents.c:971:5: warning: stack frame size of 2144 bytes in function
      'ocfs2_ioctl_move_extents' [-Wframe-larger-than=]
int ocfs2_ioctl_move_extents(struct file *filp, void __user *argp)
    ^
  CC      fs/ocfs2/super.o
fs/ocfs2/super.c:1002:12: warning: stack frame size of 3712 bytes in function
      'ocfs2_fill_super' [-Wframe-larger-than=]
static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
           ^
  CC      fs/quota/quota.o
fs/quota/quota.c:836:5: warning: stack frame size of 3456 bytes in function
      'kernel_quotactl' [-Wframe-larger-than=]
int kernel_quotactl(unsigned int cmd, const char __user *special,
    ^
  CC      drivers/block/DAC960.o
drivers/block/DAC960.c:6511:16: warning: stack frame size of 2624 bytes in function
      'dac960_user_command_proc_write' [-Wframe-larger-than=]
static ssize_t dac960_user_command_proc_write(struct file *file,
               ^
  CC      drivers/crypto/ccp/ccp-ops.o
drivers/crypto/ccp/ccp-ops.c:2434:5: warning: stack frame size of 8928 bytes in
      function 'ccp_run_cmd' [-Wframe-larger-than=]
  CC      drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.o
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2401:6: warning: stack frame
      size of 2272 bytes in function 'core_link_enable_stream' [-Wframe-larger-than=]
void core_link_enable_stream(
     ^
  CC      drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.o
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c:940:1: warning: stack frame size of
      2848 bytes in function 'gt215_ram_new' [-Wframe-larger-than=]
gt215_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
^
  CC      drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.o
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c:567:1: warning: stack frame size of
      3744 bytes in function 'gf100_ram_new_' [-Wframe-larger-than=]
gf100_ram_new_(const struct nvkm_ram_func *func,
^
  CC      drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.o
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.c:1521:1: warning: stack frame size of
      5824 bytes in function 'gk104_ram_new_' [-Wframe-larger-than=]
gk104_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
^

[tpimh]

I guess this can be related (but I feel like submitting a separate issue for this):

arch/x86/kvm/x86.c:7369:12: warning: stack frame size of 2200 bytes in function 'vcpu_enter_guest' [-Wframe-larger-than=]
static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
           ^

arch/x86/kvm/emulate.c:3341:5: warning: stack frame size of 2200 bytes in function 'emulator_task_switch' [-Wframe-larger-than=]
int emulator_task_switch(struct x86_emulate_ctxt *ctxt,
    ^

[tpimh]

One more:

fs/f2fs/gc.c:1131:5: warning: stack frame size of 2168 bytes in function 'f2fs_gc' [-Wframe-larger-than=]
int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
    ^

[nickdesaulniers]

Useful comment in #96 (comment)