BTRFS warning (device loop1): couldn't read tree root assertion failed: !tmp, in fs/btrfs/disk-io.c:1002 ------------[ cut here ]------------ kernel BUG at fs/btrfs/messages.c:259! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4517 Comm: syz-executor.1 Not tainted 6.3.0-syzkaller-13091-g3c4aa4434377 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:btrfs_assertfail+0x18/0x20 fs/btrfs/messages.c:259 Code: df e8 2c 05 36 f7 e9 50 fb ff ff e8 b2 90 01 00 66 90 66 0f 1f 00 89 d1 48 89 f2 48 89 fe 48 c7 c7 80 32 2c 8b e8 c8 60 ff ff <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 53 48 89 fb e8 73 31 de f6 48 RSP: 0018:ffffc900052af428 EFLAGS: 00010246 RAX: 0000000000000032 RBX: 0000000000000000 RCX: 38f5151cb64bb600 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88807cd980a0 R08: ffffffff816f0fec R09: fffff52000a55e39 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8880819321f7 R14: ffff88807cd98060 R15: ffff888088858000 FS: 00007f7986058700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed9c9831b8 CR3: 00000000770af000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_global_root_insert+0x1ac/0x1b0 fs/btrfs/disk-io.c:1002 load_global_roots_objectid+0x469/0x8c0 fs/btrfs/disk-io.c:2384 load_global_roots fs/btrfs/disk-io.c:2418 [inline] btrfs_read_roots fs/btrfs/disk-io.c:2445 [inline] init_tree_roots+0xa2e/0x1f80 fs/btrfs/disk-io.c:2868 open_ctree+0x1b26/0x2fa0 fs/btrfs/disk-io.c:3555 btrfs_fill_super+0x1c7/0x2f0 fs/btrfs/super.c:1152 btrfs_mount_root+0x80f/0x950 fs/btrfs/super.c:1520 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 fc_mount fs/namespace.c:1035 [inline] vfs_kern_mount+0xbc/0x150 fs/namespace.c:1065 btrfs_mount+0x39f/0xb50 fs/btrfs/super.c:1580 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f798528d69a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7986057f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000050fd RCX: 00007f798528d69a RDX: 0000000020005100 RSI: 0000000020005140 RDI: 00007f7986057fe0 RBP: 00007f7986058020 R08: 00007f7986058020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020005100 R13: 0000000020005140 R14: 00007f7986057fe0 R15: 0000000020001180 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_assertfail+0x18/0x20 fs/btrfs/messages.c:259 Code: df e8 2c 05 36 f7 e9 50 fb ff ff e8 b2 90 01 00 66 90 66 0f 1f 00 89 d1 48 89 f2 48 89 fe 48 c7 c7 80 32 2c 8b e8 c8 60 ff ff <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 53 48 89 fb e8 73 31 de f6 48 RSP: 0018:ffffc900052af428 EFLAGS: 00010246 RAX: 0000000000000032 RBX: 0000000000000000 RCX: 38f5151cb64bb600 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88807cd980a0 R08: ffffffff816f0fec R09: fffff52000a55e39 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8880819321f7 R14: ffff88807cd98060 R15: ffff888088858000 FS: 00007f7986058700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9183d4000 CR3: 00000000770af000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400