BTRFS info (device loop1): force zlib compression, level 3
BTRFS info (device loop1): allowing degraded mounts
BTRFS info (device loop1): using free space tree
BTRFS info (device loop1): auto enabling async discard
=====================================================
BUG: KMSAN: uninit-value in leaf_space_used fs/btrfs/ctree.c:3009 [inline]
BUG: KMSAN: uninit-value in btrfs_leaf_free_space+0x693/0x790 fs/btrfs/ctree.c:3024
 leaf_space_used fs/btrfs/ctree.c:3009 [inline]
 btrfs_leaf_free_space+0x693/0x790 fs/btrfs/ctree.c:3024
 search_leaf fs/btrfs/ctree.c:1895 [inline]
 btrfs_search_slot+0x3376/0x4710 fs/btrfs/ctree.c:2172
 btrfs_insert_empty_items fs/btrfs/ctree.c:4202 [inline]
 btrfs_insert_empty_item fs/btrfs/ctree.h:646 [inline]
 btrfs_insert_item+0x19c/0x510 fs/btrfs/ctree.c:4231
 btrfs_insert_root+0x8a/0xb0 fs/btrfs/root-tree.c:207
 btrfs_create_tree+0xb91/0xe50 fs/btrfs/disk-io.c:1140
 btrfs_quota_enable+0x4c2/0x38f0 fs/btrfs/qgroup.c:1036
 btrfs_ioctl_quota_ctl+0x28d/0x370 fs/btrfs/ioctl.c:3682
 btrfs_ioctl+0xafa/0x1290 fs/btrfs/ioctl.c:4643
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4702
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910
 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+0x9f6/0xe90 mm/page_alloc.c:5614
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2283
 folio_alloc+0x42/0x120 mm/mempolicy.c:2293
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:976
 __filemap_get_folio+0xe4b/0x1920 mm/filemap.c:1970
 pagecache_get_page+0x4f/0x290 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:632 [inline]
 alloc_extent_buffer+0x733/0x3190 fs/btrfs/extent_io.c:4044
 btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:835
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4799 [inline]
 btrfs_alloc_tree_block+0x371/0x1f70 fs/btrfs/extent-tree.c:4918
 __btrfs_cow_block+0x575/0x1de0 fs/btrfs/ctree.c:541
 btrfs_cow_block+0x7cc/0xa00 fs/btrfs/ctree.c:696
 btrfs_search_slot+0x189f/0x4710 fs/btrfs/ctree.c:2136
 btrfs_insert_empty_items fs/btrfs/ctree.c:4202 [inline]
 btrfs_insert_empty_item fs/btrfs/ctree.h:646 [inline]
 btrfs_insert_item+0x19c/0x510 fs/btrfs/ctree.c:4231
 btrfs_insert_root+0x8a/0xb0 fs/btrfs/root-tree.c:207
 btrfs_create_tree+0xb91/0xe50 fs/btrfs/disk-io.c:1140
 btrfs_quota_enable+0x4c2/0x38f0 fs/btrfs/qgroup.c:1036
 btrfs_ioctl_quota_ctl+0x28d/0x370 fs/btrfs/ioctl.c:3682
 btrfs_ioctl+0xafa/0x1290 fs/btrfs/ioctl.c:4643
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4702
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910
 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: 1 PID: 24735 Comm: syz-executor.1 Tainted: G        W          6.3.0-rc3-syzkaller-g90ea0df61c98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/17/2023
=====================================================