syz-executor.5[5309]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set loop5: detected capacity change from 0 to 64 ===================================================== BUG: KMSAN: uninit-value in hfs_ext_read_extent fs/hfs/extent.c:196 [inline] BUG: KMSAN: uninit-value in hfs_get_block+0x59e/0xf40 fs/hfs/extent.c:366 hfs_ext_read_extent fs/hfs/extent.c:196 [inline] hfs_get_block+0x59e/0xf40 fs/hfs/extent.c:366 block_read_full_folio+0x68f/0x1540 fs/buffer.c:2388 hfs_read_folio+0x34/0x40 fs/hfs/inode.c:39 filemap_read_folio+0xce/0x370 mm/filemap.c:2385 do_read_cache_folio+0x6ae/0xc10 mm/filemap.c:3718 do_read_cache_page mm/filemap.c:3784 [inline] read_cache_page+0x63/0x2f0 mm/filemap.c:3793 read_mapping_page include/linux/pagemap.h:860 [inline] hfs_btree_open+0x6ef/0x1aa0 fs/hfs/btree.c:78 hfs_mdb_get+0x2092/0x28b0 fs/hfs/mdb.c:204 hfs_fill_super+0x1cf5/0x23c0 fs/hfs/super.c:406 mount_bdev+0x3d7/0x560 fs/super.c:1603 hfs_mount+0x4d/0x60 fs/hfs/super.c:456 legacy_get_tree+0x110/0x290 fs/fs_context.c:638 vfs_get_tree+0xa5/0x520 fs/super.c:1724 do_new_mount+0x68d/0x1550 fs/namespace.c:3335 path_mount+0x73d/0x1f20 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3861 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Uninit was created at: __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4462 alloc_pages+0xd01/0x1040 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab mm/slub.c:2017 [inline] new_slab+0x421/0x1570 mm/slub.c:2070 ___slab_alloc+0x13db/0x33d0 mm/slub.c:3223 __slab_alloc mm/slub.c:3322 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x5ee/0xa10 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2908 [inline] hfs_alloc_inode+0x5a/0xc0 fs/hfs/super.c:165 alloc_inode+0x83/0x440 fs/inode.c:259 iget_locked+0x2dd/0xe80 fs/inode.c:1314 hfs_btree_open+0x16c/0x1aa0 fs/hfs/btree.c:38 hfs_mdb_get+0x1fe2/0x28b0 fs/hfs/mdb.c:199 hfs_fill_super+0x1cf5/0x23c0 fs/hfs/super.c:406 mount_bdev+0x3d7/0x560 fs/super.c:1603 hfs_mount+0x4d/0x60 fs/hfs/super.c:456 legacy_get_tree+0x110/0x290 fs/fs_context.c:638 vfs_get_tree+0xa5/0x520 fs/super.c:1724 do_new_mount+0x68d/0x1550 fs/namespace.c:3335 path_mount+0x73d/0x1f20 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3861 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 CPU: 0 PID: 5309 Comm: syz-executor.5 Not tainted 6.5.0-syzkaller-04808-g6c1b980a7e79 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 =====================================================