BTRFS warning (device loop3): the 'inode_cache' option is deprecated and has no effect since 5.11
BTRFS info (device loop3): force zlib compression, level 3
BTRFS info (device loop3): allowing degraded mounts
BTRFS info (device loop3): using free space tree
BTRFS info (device loop3): auto enabling async discard
=====================================================
BUG: KMSAN: uninit-value in htree_insert fs/btrfs/delayed-ref.c:281 [inline]
BUG: KMSAN: uninit-value in add_delayed_ref_head+0x360/0xc80 fs/btrfs/delayed-ref.c:787
 htree_insert fs/btrfs/delayed-ref.c:281 [inline]
 add_delayed_ref_head+0x360/0xc80 fs/btrfs/delayed-ref.c:787
 btrfs_add_delayed_tree_ref+0x10ec/0x1b40 fs/btrfs/delayed-ref.c:935
 btrfs_inc_extent_ref+0x1ad/0x300 fs/btrfs/extent-tree.c:1392
 __btrfs_mod_ref+0xed9/0x1360 fs/btrfs/extent-tree.c:2431
 btrfs_inc_ref+0x4b/0x60 fs/btrfs/extent-tree.c:2446
 btrfs_copy_root+0xa74/0xf70
 create_pending_snapshot+0x1163/0x3d20 fs/btrfs/transaction.c:1767
 create_pending_snapshots+0x258/0x3b0 fs/btrfs/transaction.c:1893
 btrfs_commit_transaction+0x20a2/0x6730 fs/btrfs/transaction.c:2363
 create_snapshot+0x92d/0xe80 fs/btrfs/ioctl.c:845
 btrfs_mksubvol+0xa27/0xbb0 fs/btrfs/ioctl.c:995
 btrfs_mksnapshot+0x11f/0x180 fs/btrfs/ioctl.c:1041
 __btrfs_ioctl_snap_create+0x54d/0x870 fs/btrfs/ioctl.c:1294
 btrfs_ioctl_snap_create+0x220/0x2e0 fs/btrfs/ioctl.c:1321
 btrfs_ioctl+0x4b0/0x1290
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4716
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x79b/0xfe0 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 stored to memory at:
 init_delayed_ref_head fs/btrfs/delayed-ref.c:734 [inline]
 btrfs_add_delayed_tree_ref+0x1433/0x1b40 fs/btrfs/delayed-ref.c:923
 btrfs_inc_extent_ref+0x1ad/0x300 fs/btrfs/extent-tree.c:1392
 __btrfs_mod_ref+0xed9/0x1360 fs/btrfs/extent-tree.c:2431
 btrfs_inc_ref+0x4b/0x60 fs/btrfs/extent-tree.c:2446
 btrfs_copy_root+0xa74/0xf70
 create_pending_snapshot+0x1163/0x3d20 fs/btrfs/transaction.c:1767
 create_pending_snapshots+0x258/0x3b0 fs/btrfs/transaction.c:1893
 btrfs_commit_transaction+0x20a2/0x6730 fs/btrfs/transaction.c:2363
 create_snapshot+0x92d/0xe80 fs/btrfs/ioctl.c:845
 btrfs_mksubvol+0xa27/0xbb0 fs/btrfs/ioctl.c:995
 btrfs_mksnapshot+0x11f/0x180 fs/btrfs/ioctl.c:1041
 __btrfs_ioctl_snap_create+0x54d/0x870 fs/btrfs/ioctl.c:1294
 btrfs_ioctl_snap_create+0x220/0x2e0 fs/btrfs/ioctl.c:1321
 btrfs_ioctl+0x4b0/0x1290
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4716
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x79b/0xfe0 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 stored to memory at:
 btrfs_init_generic_ref fs/btrfs/delayed-ref.h:284 [inline]
 __btrfs_mod_ref+0xca5/0x1360 fs/btrfs/extent-tree.c:2426
 btrfs_inc_ref+0x4b/0x60 fs/btrfs/extent-tree.c:2446
 btrfs_copy_root+0xa74/0xf70
 create_pending_snapshot+0x1163/0x3d20 fs/btrfs/transaction.c:1767
 create_pending_snapshots+0x258/0x3b0 fs/btrfs/transaction.c:1893
 btrfs_commit_transaction+0x20a2/0x6730 fs/btrfs/transaction.c:2363
 create_snapshot+0x92d/0xe80 fs/btrfs/ioctl.c:845
 btrfs_mksubvol+0xa27/0xbb0 fs/btrfs/ioctl.c:995
 btrfs_mksnapshot+0x11f/0x180 fs/btrfs/ioctl.c:1041
 __btrfs_ioctl_snap_create+0x54d/0x870 fs/btrfs/ioctl.c:1294
 btrfs_ioctl_snap_create+0x220/0x2e0 fs/btrfs/ioctl.c:1321
 btrfs_ioctl+0x4b0/0x1290
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4716
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x79b/0xfe0 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+0x9a4/0xe00 mm/page_alloc.c:4500
 alloc_pages+0xd01/0x1040
 folio_alloc+0x42/0x120 mm/mempolicy.c:2308
 filemap_alloc_folio+0xa5/0x430 mm/filemap.c:979
 __filemap_get_folio+0x908/0x13a0 mm/filemap.c:1933
 pagecache_get_page+0x4e/0x200 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:639 [inline]
 alloc_extent_buffer+0x6e8/0x2e60 fs/btrfs/extent_io.c:3601
 btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:588
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4771 [inline]
 btrfs_alloc_tree_block+0x344/0x1d10 fs/btrfs/extent-tree.c:4892
 btrfs_copy_root+0x40b/0xf70 fs/btrfs/ctree.c:331
 create_pending_snapshot+0x1163/0x3d20 fs/btrfs/transaction.c:1767
 create_pending_snapshots+0x258/0x3b0 fs/btrfs/transaction.c:1893
 btrfs_commit_transaction+0x20a2/0x6730 fs/btrfs/transaction.c:2363
 create_snapshot+0x92d/0xe80 fs/btrfs/ioctl.c:845
 btrfs_mksubvol+0xa27/0xbb0 fs/btrfs/ioctl.c:995
 btrfs_mksnapshot+0x11f/0x180 fs/btrfs/ioctl.c:1041
 __btrfs_ioctl_snap_create+0x54d/0x870 fs/btrfs/ioctl.c:1294
 btrfs_ioctl_snap_create+0x220/0x2e0 fs/btrfs/ioctl.c:1321
 btrfs_ioctl+0x4b0/0x1290
 btrfs_compat_ioctl+0x65/0x70 fs/btrfs/ioctl.c:4716
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x79b/0xfe0 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: 0 PID: 5424 Comm: syz-executor.3 Not tainted 6.5.0-rc7-syzkaller-00168-g7d2f353b2682 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
=====================================================