------------[ cut here ]------------ kernel BUG at fs/btrfs/extent-tree.c:3452! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 9519 Comm: syz.0.570 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_tree_block+0xbf4/0xc00 fs/btrfs/extent-tree.c:3452 lr : btrfs_free_tree_block+0xbf4/0xc00 fs/btrfs/extent-tree.c:3452 sp : ffff80009a966a20 x29: ffff80009a966b20 x28: ffff70001352cd4c x27: ffff00010b121000 x26: ffff00010b80f680 x25: ffff00010b121064 x24: 00000000fffffff4 x23: 0000000000000001 x22: 0000000000000002 x21: ffff80008ea8e298 x20: ffff0000dd5be250 x19: dfff800000000000 x18: 0000000000000008 x17: 0000000000000000 x16: ffff800082f8f174 x15: 0000000000000001 x14: 1ffff00011e7a636 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700011e7a637 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000e1191e40 x7 : fffffffffffc56f0 x6 : fffffffffffc56b0 x5 : ffff80009a965cd8 x4 : 00000000ffffffff x3 : 0000000000000c40 x2 : ffff0000d6b77dc0 x1 : 00000000fffffff4 x0 : 0000000000000000 Call trace: btrfs_free_tree_block+0xbf4/0xc00 fs/btrfs/extent-tree.c:3452 btrfs_force_cow_block+0xea8/0x1a58 fs/btrfs/ctree.c:623 btrfs_cow_block+0x318/0xa28 fs/btrfs/ctree.c:746 btrfs_search_slot+0xba0/0x2a08 btrfs_insert_empty_items+0xa4/0x17c fs/btrfs/ctree.c:4295 btrfs_insert_empty_item fs/btrfs/ctree.h:650 [inline] alloc_reserved_file_extent+0x234/0x618 fs/btrfs/extent-tree.c:4810 run_delayed_data_ref fs/btrfs/extent-tree.c:1572 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1766 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2027 [inline] __btrfs_run_delayed_refs+0x10cc/0x3cbc fs/btrfs/extent-tree.c:2097 btrfs_run_delayed_refs+0xc4/0x2bc fs/btrfs/extent-tree.c:2209 btrfs_commit_transaction+0x220/0x2ba8 fs/btrfs/transaction.c:2179 btrfs_sync_fs+0x534/0xad8 fs/btrfs/super.c:1014 sync_filesystem+0x1a0/0x218 fs/sync.c:66 btrfs_reconfigure+0x238/0x231c fs/btrfs/super.c:1473 reconfigure_super+0x1d0/0x6f0 fs/super.c:1072 do_remount fs/namespace.c:2892 [inline] path_mount+0xc0c/0xe04 fs/namespace.c:3671 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __arm64_sys_mount+0x3c4/0x488 fs/namespace.c:3875 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: 5281aee3 957545d8 d4210000 978ee28a (d4210000) ---[ end trace 0000000000000000 ]---