------------[ cut here ]------------
WARNING: CPU: 1 PID: 5729 at fs/read_write.c:525 __kernel_write+0x8cc/0xa60
Modules linked in:
CPU: 1 PID: 5729 Comm: syz-executor.3 Not tainted 5.15.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__kernel_write+0x8cc/0xa60 fs/read_write.c:525
Code: 25 28 00 00 00 48 3b 84 24 40 01 00 00 0f 85 a4 01 00 00 4c 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d4 76 ab ff <0f> 0b 49 c7 c6 f7 ff ff ff eb 9d e8 c4 76 ab ff eb 05 e8 bd 76 ab
RSP: 0018:ffffc900042c77a0 EFLAGS: 00010283
RAX: ffffffff81d4ab0c RBX: 00000000000a801d RCX: 0000000000040000
RDX: ffffc9000aec1000 RSI: 0000000000001691 RDI: 0000000000001692
RBP: ffffc900042c7930 R08: ffffffff81d4a380 R09: ffffc900042c7890
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000858f00
R13: dffffc0000000000 R14: ffff88807ddd5c04 R15: 0000000000000011
FS:  00007f5d388b26c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9371df440 CR3: 000000007ab07000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kernel_write+0xcd/0x200 fs/read_write.c:568
 write_buf fs/btrfs/send.c:565 [inline]
 send_header fs/btrfs/send.c:684 [inline]
 send_subvol+0x188/0x4200 fs/btrfs/send.c:7385
 btrfs_ioctl_send+0x193a/0x1d60 fs/btrfs/send.c:7711
 _btrfs_ioctl_send+0x2fb/0x430 fs/btrfs/ioctl.c:4893
 btrfs_ioctl+0x595/0xb10
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5d3a330ae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d388b20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5d3a44ff80 RCX: 00007f5d3a330ae9
RDX: 0000000020000200 RSI: 0000000040489426 RDI: 0000000000000003
RBP: 00007f5d3a37c47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5d3a44ff80 R15: 00007ffc78436268
 </TASK>