assertion failed: block_start != EXTENT_MAP_HOLE, in fs/btrfs/extent_io.c:1391
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent_io.c:1391!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.14.0-rc5-syzkaller-g48a5eed9ad58 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:submit_one_sector fs/btrfs/extent_io.c:1391 [inline]
RIP: 0010:extent_writepage_io+0xd9c/0xe30 fs/btrfs/extent_io.c:1477
Code: 37 fd 90 0f 0b e8 c4 75 d2 fd 48 c7 c7 20 07 6d 8c 48 c7 c6 20 14 6d 8c 48 c7 c2 c0 06 6d 8c b9 6f 05 00 00 e8 e5 b8 37 fd 90 <0f> 0b e8 9d 75 d2 fd 4c 89 ff 48 c7 c6 a0 0b 6d 8c e8 0e cf 1a fe
RSP: 0018:ffffc90000ab6dc0 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffffea000174e7c8 RCX: 506249d354384a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000ab6f30 R08: ffffffff81a114cc R09: 1ffff92000156d54
R10: dffffc0000000000 R11: fffff52000156d55 R12: dffffc0000000000
R13: 0000000000002000 R14: fffffffffffffffd R15: ffffea000174e7c0
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055791fc54018 CR3: 000000007909a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 extent_writepage fs/btrfs/extent_io.c:1564 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2248 [inline]
 btrfs_writepages+0x1428/0x22c0 fs/btrfs/extent_io.c:2376
 do_writepages+0x35f/0x880 mm/page-writeback.c:2687
 filemap_fdatawrite_wbc+0xde/0x140 mm/filemap.c:389
 start_delalloc_inodes+0x7cb/0xc60 fs/btrfs/inode.c:8540
 btrfs_start_delalloc_roots+0x72a/0xab0 fs/btrfs/inode.c:8617
 shrink_delalloc fs/btrfs/space-info.c:680 [inline]
 flush_space+0x664/0xd30 fs/btrfs/space-info.c:790
 btrfs_async_reclaim_metadata_space+0x178/0x3b0 fs/btrfs/space-info.c:1120
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_one_sector fs/btrfs/extent_io.c:1391 [inline]
RIP: 0010:extent_writepage_io+0xd9c/0xe30 fs/btrfs/extent_io.c:1477
Code: 37 fd 90 0f 0b e8 c4 75 d2 fd 48 c7 c7 20 07 6d 8c 48 c7 c6 20 14 6d 8c 48 c7 c2 c0 06 6d 8c b9 6f 05 00 00 e8 e5 b8 37 fd 90 <0f> 0b e8 9d 75 d2 fd 4c 89 ff 48 c7 c6 a0 0b 6d 8c e8 0e cf 1a fe
RSP: 0018:ffffc90000ab6dc0 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffffea000174e7c8 RCX: 506249d354384a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000ab6f30 R08: ffffffff81a114cc R09: 1ffff92000156d54
R10: dffffc0000000000 R11: fffff52000156d55 R12: dffffc0000000000
R13: 0000000000002000 R14: fffffffffffffffd R15: ffffea000174e7c0
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff8b2dfea8 CR3: 000000007909a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400