assertion failed: block_start != EXTENT_MAP_HOLE, in fs/btrfs/extent_io.c:1721
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent_io.c:1721!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 17168 Comm: syz.3.1023 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:submit_one_sector fs/btrfs/extent_io.c:1721 [inline]
RIP: 0010:extent_writepage_io+0x1070/0x11a0 fs/btrfs/extent_io.c:1826
Code: 18 fd 90 0f 0b e8 10 33 b7 fd 48 c7 c7 a0 4b b8 8b 48 c7 c6 c0 62 b8 8b 48 c7 c2 20 4c b8 8b b9 b9 06 00 00 e8 51 bd 18 fd 90 <0f> 0b e8 e9 32 b7 fd 48 89 ef 48 c7 c6 80 53 b8 8b e8 1a 1c 19 fd
RSP: 0018:ffffc90004ddf080 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffffea0000444748 RCX: a06b7948973b8a00
RDX: ffffc90011920000 RSI: 0000000000007130 RDI: 0000000000007131
RBP: ffffea0000444740 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520009bbdc1 R12: 0000000000001000
R13: dffffc0000000000 R14: ffff88803c1d42f0 R15: fffffffffffffffd
FS:  00007f818f4156c0(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000069000 CR3: 000000005f088000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 extent_writepage fs/btrfs/extent_io.c:1936 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2593 [inline]
 btrfs_writepages+0x17a1/0x28b0 fs/btrfs/extent_io.c:2725
 do_writepages+0x338/0x560 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range+0x1f2/0x300 mm/filemap.c:412
 btrfs_fdatawrite_range+0x54/0xf0 fs/btrfs/file.c:3884
 btrfs_direct_write+0x6a0/0xc30 fs/btrfs/direct-io.c:1038
 btrfs_do_write_iter+0x329/0x790 fs/btrfs/file.c:1449
 do_iter_readv_writev+0x624/0x8d0 fs/read_write.c:-1
 vfs_writev+0x34c/0x990 fs/read_write.c:1058
 do_pwritev fs/read_write.c:1154 [inline]
 __do_sys_pwritev2 fs/read_write.c:1212 [inline]
 __se_sys_pwritev2+0x17a/0x2a0 fs/read_write.c:1203
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f81911de019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f818f415028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f8191466090 RCX: 00007f81911de019
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
RBP: 00007f819127500c R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000007000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8191466128 R14: 00007f8191466090 R15: 00007ffd326240a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_one_sector fs/btrfs/extent_io.c:1721 [inline]
RIP: 0010:extent_writepage_io+0x1070/0x11a0 fs/btrfs/extent_io.c:1826
Code: 18 fd 90 0f 0b e8 10 33 b7 fd 48 c7 c7 a0 4b b8 8b 48 c7 c6 c0 62 b8 8b 48 c7 c2 20 4c b8 8b b9 b9 06 00 00 e8 51 bd 18 fd 90 <0f> 0b e8 e9 32 b7 fd 48 89 ef 48 c7 c6 80 53 b8 8b e8 1a 1c 19 fd
RSP: 0018:ffffc90004ddf080 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffffea0000444748 RCX: a06b7948973b8a00
RDX: ffffc90011920000 RSI: 0000000000007130 RDI: 0000000000007131
RBP: ffffea0000444740 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520009bbdc1 R12: 0000000000001000
R13: dffffc0000000000 R14: ffff88803c1d42f0 R15: fffffffffffffffd
FS:  00007f818f4156c0(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa67ff3f010 CR3: 000000005f088000 CR4: 00000000003526f0