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charset=us-ascii Content-Disposition: inline :::::: :::::: Manual check reason: "low confidence static check warning: fs/bcachefs/sb-members.c:505:46: sparse: sparse: cannot dereference this type" :::::: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: Linux Memory Management List TO: Kent Overstreet tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6804f0edbe7747774e6ae60f20cec4ee3ad7c187 commit: 4e7795eda4459bf3e69c87c793bc34f610f9d981 [7634/8795] bcachefs: bch2_sb_member_alloc() :::::: branch date: 3 hours ago :::::: commit date: 31 hours ago config: x86_64-randconfig-122-20240903 (https://download.01.org/0day-ci/archive/20240903/202409031808.CPMMUdNT-lkp@intel.com/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240903/202409031808.CPMMUdNT-lkp@intel.com/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 | Closes: https://lore.kernel.org/r/202409031808.CPMMUdNT-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) fs/bcachefs/sb-members.c: note: in included file: fs/bcachefs/bcachefs.h:996:9: sparse: sparse: array of flexible structures fs/bcachefs/sb-members.c:503:9: sparse: sparse: typename in expression fs/bcachefs/sb-members.c:503:18: sparse: sparse: Expected ; at end of statement fs/bcachefs/sb-members.c:503:18: sparse: sparse: got nr_devices fs/bcachefs/sb-members.c:503:31: sparse: sparse: Expected ; at the end of type declaration fs/bcachefs/sb-members.c:503:31: sparse: sparse: got ) fs/bcachefs/sb-members.c:505:46: sparse: sparse: undefined identifier 'c' >> fs/bcachefs/sb-members.c:505:46: sparse: sparse: cannot dereference this type >> fs/bcachefs/sb-members.c:505:46: sparse: sparse: cannot dereference this type fs/bcachefs/sb-members.c:509:14: sparse: sparse: undefined identifier 'c' fs/bcachefs/sb-members.c:509:14: sparse: sparse: cannot dereference this type fs/bcachefs/sb-members.c:509:14: sparse: sparse: cannot dereference this type fs/bcachefs/sb-members.c:510:13: sparse: sparse: Expected ) in function declarator fs/bcachefs/sb-members.c:510:13: sparse: sparse: got ! >> fs/bcachefs/sb-members.c:510:9: sparse: sparse: Trying to use reserved word 'if' as identifier fs/bcachefs/sb-members.c:513:10: sparse: sparse: Expected ; at end of declaration fs/bcachefs/sb-members.c:513:10: sparse: sparse: got -> >> fs/bcachefs/sb-members.c:514:9: sparse: sparse: Trying to use reserved word 'return' as identifier fs/bcachefs/sb-members.c:514:16: sparse: sparse: Expected ; at end of declaration fs/bcachefs/sb-members.c:514:16: sparse: sparse: got dev_idx fs/bcachefs/sb-members.c:515:1: sparse: sparse: Expected ; at the end of type declaration fs/bcachefs/sb-members.c:515:1: sparse: sparse: got } fs/bcachefs/sb-members.c:503:9: sparse: sparse: undefined identifier 'unsigned' fs/bcachefs/sb-members.c:503:31: sparse: sparse: undefined identifier '__UNIQUE_ID_x_653' fs/bcachefs/sb-members.c:505:46: sparse: sparse: undefined identifier 'c' >> fs/bcachefs/sb-members.c:505:46: sparse: sparse: non-scalar type in conditional: fs/bcachefs/sb-members.c:505:46: sparse: bad type _ptr fs/bcachefs/sb-members.c:506:25: sparse: sparse: undefined identifier 'nr_devices' fs/bcachefs/sb-members.c:509:14: sparse: sparse: undefined identifier 'c' fs/bcachefs/sb-members.c:509:14: sparse: sparse: non-scalar type in conditional: fs/bcachefs/sb-members.c:509:14: sparse: bad type _ptr fs/bcachefs/sb-members.c:509:9: sparse: sparse: symbol 'mi' has multiple initializers (originally initialized at fs/bcachefs/sb-members.c:505) fs/bcachefs/sb-members.c:509:9: sparse: sparse: symbol 'mi' redeclared with different type (different base types): fs/bcachefs/sb-members.c:509:9: sparse: int [addressable] [toplevel] mi fs/bcachefs/sb-members.c:505:40: sparse: note: previously declared as: fs/bcachefs/sb-members.c:505:40: sparse: struct bch_sb_field_members_v2 *[addressable] [toplevel] mi vim +505 fs/bcachefs/sb-members.c 4e7795eda4459bf Kent Overstreet 2024-09-01 476 4e7795eda4459bf Kent Overstreet 2024-09-01 477 int bch2_sb_member_alloc(struct bch_fs *c) 4e7795eda4459bf Kent Overstreet 2024-09-01 478 { 4e7795eda4459bf Kent Overstreet 2024-09-01 479 unsigned dev_idx = c->sb.nr_devices; 4e7795eda4459bf Kent Overstreet 2024-09-01 480 if (dev_idx < BCH_SB_MEMBERS_MAX) 4e7795eda4459bf Kent Overstreet 2024-09-01 481 goto have_slot; 4e7795eda4459bf Kent Overstreet 2024-09-01 482 4e7795eda4459bf Kent Overstreet 2024-09-01 483 int best = -1; 4e7795eda4459bf Kent Overstreet 2024-09-01 484 u64 best_last_mount = 0; 4e7795eda4459bf Kent Overstreet 2024-09-01 485 for (dev_idx = 0; dev_idx < BCH_SB_MEMBERS_MAX; dev_idx++) { 4e7795eda4459bf Kent Overstreet 2024-09-01 486 struct bch_member m = bch2_sb_member_get(c->disk_sb.sb, dev_idx); 4e7795eda4459bf Kent Overstreet 2024-09-01 487 if (bch2_member_alive(&m)) 4e7795eda4459bf Kent Overstreet 2024-09-01 488 continue; 4e7795eda4459bf Kent Overstreet 2024-09-01 489 4e7795eda4459bf Kent Overstreet 2024-09-01 490 u64 last_mount = le64_to_cpu(m.last_mount); 4e7795eda4459bf Kent Overstreet 2024-09-01 491 if (best < 0 || last_mount < best_last_mount) { 4e7795eda4459bf Kent Overstreet 2024-09-01 492 best = dev_idx; 4e7795eda4459bf Kent Overstreet 2024-09-01 493 best_last_mount = last_mount; 4e7795eda4459bf Kent Overstreet 2024-09-01 494 } 4e7795eda4459bf Kent Overstreet 2024-09-01 495 } 4e7795eda4459bf Kent Overstreet 2024-09-01 496 if (best >= 0) { 4e7795eda4459bf Kent Overstreet 2024-09-01 497 dev_idx = best; 4e7795eda4459bf Kent Overstreet 2024-09-01 498 goto have_slot; 4e7795eda4459bf Kent Overstreet 2024-09-01 499 } 4e7795eda4459bf Kent Overstreet 2024-09-01 500 4e7795eda4459bf Kent Overstreet 2024-09-01 501 return -BCH_ERR_ENOSPC_sb_members; 4e7795eda4459bf Kent Overstreet 2024-09-01 502 have_slot: 4e7795eda4459bf Kent Overstreet 2024-09-01 503 unsigned nr_devices = max_t(unsigned, dev_idx + 1, c->sb.nr_devices); 4e7795eda4459bf Kent Overstreet 2024-09-01 504 4e7795eda4459bf Kent Overstreet 2024-09-01 @505 struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2); 4e7795eda4459bf Kent Overstreet 2024-09-01 506 unsigned u64s = DIV_ROUND_UP(sizeof(struct bch_sb_field_members_v2) + 4e7795eda4459bf Kent Overstreet 2024-09-01 507 le16_to_cpu(mi->member_bytes) * nr_devices, sizeof(u64)); 4e7795eda4459bf Kent Overstreet 2024-09-01 508 4e7795eda4459bf Kent Overstreet 2024-09-01 509 mi = bch2_sb_field_resize(&c->disk_sb, members_v2, u64s); 4e7795eda4459bf Kent Overstreet 2024-09-01 @510 if (!mi) 4e7795eda4459bf Kent Overstreet 2024-09-01 511 return -BCH_ERR_ENOSPC_sb_members; 4e7795eda4459bf Kent Overstreet 2024-09-01 512 4e7795eda4459bf Kent Overstreet 2024-09-01 513 c->disk_sb.sb->nr_devices = nr_devices; 4e7795eda4459bf Kent Overstreet 2024-09-01 @514 return dev_idx; -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki