assertion failed: block_start != EXTENT_MAP_HOLE, in fs/btrfs/extent_io.c:1356 ------------[ cut here ]------------ kernel BUG at fs/btrfs/extent_io.c:1356! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 48 Comm: kworker/u4:3 Not tainted 6.7.0-rc8-syzkaller-00119-g1f874787ed9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: writeback wb_workfn (flush-btrfs-881) RIP: 0010:__extent_writepage_io+0xcd5/0xd00 fs/btrfs/extent_io.c:1356 Code: 77 07 90 0f 0b e8 fb 3f f1 fd 48 c7 c7 00 b7 ab 8b 48 c7 c6 00 c4 ab 8b 48 c7 c2 a0 b6 ab 8b b9 4c 05 00 00 e8 4c ca 77 07 90 <0f> 0b e8 d4 3f f1 fd 48 8b 3c 24 e8 db 22 01 00 48 89 c7 48 c7 c6 RSP: 0018:ffffc90000b8ef40 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000000 RCX: dd7515fb3559da00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: fffffffffffffffd R08: ffffffff8171373c R09: 1ffff92000171d88 R10: dffffc0000000000 R11: fffff52000171d89 R12: 0000000000004000 R13: 0000000000004000 R14: ffffea00010525a8 R15: ffff888020207dd0 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32024000 CR3: 0000000036a58000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __extent_writepage fs/btrfs/extent_io.c:1446 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2108 [inline] extent_writepages+0x1260/0x26a0 fs/btrfs/extent_io.c:2230 do_writepages+0x3a6/0x670 mm/page-writeback.c:2553 __writeback_single_inode+0x155/0xfc0 fs/fs-writeback.c:1625 writeback_sb_inodes+0x8e3/0x1220 fs/fs-writeback.c:1916 wb_writeback+0x44d/0xc70 fs/fs-writeback.c:2092 wb_do_writeback fs/fs-writeback.c:2239 [inline] wb_workfn+0x400/0xfb0 fs/fs-writeback.c:2279 process_one_work kernel/workqueue.c:2627 [inline] process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__extent_writepage_io+0xcd5/0xd00 fs/btrfs/extent_io.c:1356 Code: 77 07 90 0f 0b e8 fb 3f f1 fd 48 c7 c7 00 b7 ab 8b 48 c7 c6 00 c4 ab 8b 48 c7 c2 a0 b6 ab 8b b9 4c 05 00 00 e8 4c ca 77 07 90 <0f> 0b e8 d4 3f f1 fd 48 8b 3c 24 e8 db 22 01 00 48 89 c7 48 c7 c6 RSP: 0018:ffffc90000b8ef40 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000000 RCX: dd7515fb3559da00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: fffffffffffffffd R08: ffffffff8171373c R09: 1ffff92000171d88 R10: dffffc0000000000 R11: fffff52000171d89 R12: 0000000000004000 R13: 0000000000004000 R14: ffffea00010525a8 R15: ffff888020207dd0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e741fe000 CR3: 00000000357b6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400