loop0: detected capacity change from 0 to 512
=====================================================
BUG: KMSAN: uninit-value in check_igot_inode fs/ext4/inode.c:4670 [inline]
BUG: KMSAN: uninit-value in __ext4_iget+0xd39/0x5f00 fs/ext4/inode.c:4716
 check_igot_inode fs/ext4/inode.c:4670 [inline]
 __ext4_iget+0xd39/0x5f00 fs/ext4/inode.c:4716
 __ext4_fill_super fs/ext4/super.c:5482 [inline]
 ext4_fill_super+0x94c4/0xaf60 fs/ext4/super.c:5712
 get_tree_bdev+0x67d/0x890 fs/super.c:1619
 ext4_get_tree+0x34/0x40 fs/ext4/super.c:5744
 vfs_get_tree+0xa5/0x520 fs/super.c:1784
 do_new_mount+0x68d/0x1550 fs/namespace.c:3341
 path_mount+0x73d/0x1f20 fs/namespace.c:3668
 do_mount fs/namespace.c:3681 [inline]
 __do_sys_mount fs/namespace.c:3887 [inline]
 __se_sys_mount+0x725/0x810 fs/namespace.c:3864
 __x64_sys_mount+0xe4/0x140 fs/namespace.c:3864
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591
 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133
 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204
 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+0x552/0x970 mm/slub.c:3509
 alloc_inode_sb include/linux/fs.h:3018 [inline]
 fat_alloc_inode+0x63/0x180 fs/fat/inode.c:750
 alloc_inode+0x83/0x440 fs/inode.c:261
 new_inode_pseudo fs/inode.c:1006 [inline]
 new_inode+0x38/0x420 fs/inode.c:1032
 fat_build_inode+0x427/0x7b0 fs/fat/inode.c:603
 msdos_create+0x638/0x920 fs/fat/namei_msdos.c:292
 lookup_open fs/namei.c:3477 [inline]
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0x2d53/0x5ac0 fs/namei.c:3776
 do_filp_open+0x20d/0x590 fs/namei.c:3806
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
 do_sys_open fs/open.c:1419 [inline]
 __do_sys_openat fs/open.c:1435 [inline]
 __se_sys_openat fs/open.c:1430 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1430
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 1 PID: 9846 Comm: syz-executor.0 Tainted: G        W          6.7.0-syzkaller-00562-g9f8413c4a66f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
=====================================================