------------[ cut here ]------------
WARNING: CPU: 0 PID: 4687 at fs/read_write.c:504 __kernel_write_iter+0x508/0x5f8
Modules linked in:
CPU: 0 PID: 4687 Comm: syz-executor.4 Not tainted 6.1.49-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __kernel_write_iter+0x508/0x5f8
lr : __kernel_write_iter+0x504/0x5f8 fs/read_write.c:504
sp : ffff80001fad74c0
x29: ffff80001fad75a0 x28: ffff700003f5aea0 x27: ffff80001fad7640
x26: dfff800000000000 x25: fffffffffffffff7 x24: 1fffe0001b1a8a8f
x23: ffff0000d8d4547c x22: ffff00011ca0d408 x21: dfff800000000000
x20: ffff0000d8d45400 x19: 00000000002a0001 x18: ffff80001fad7560
x17: ffff80000a1bd900 x16: ffff800012077400 x15: 000000000001da22
x14: 1ffff00002b160b0 x13: dfff800000000000 x12: 0000000000040000
x11: 00000000000022e7 x10: ffff800025e2a000 x9 : ffff800008a36c2c
x8 : 00000000000022e8 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000011 x3 : 0000000000000001
x2 : ffff00011ca0d408 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __kernel_write_iter+0x508/0x5f8
 __kernel_write fs/read_write.c:537 [inline]
 kernel_write+0x1b0/0x2f0 fs/read_write.c:558
 write_buf fs/btrfs/send.c:591 [inline]
 send_header fs/btrfs/send.c:709 [inline]
 send_subvol+0x174/0x3f0c fs/btrfs/send.c:7675
 btrfs_ioctl_send+0x1c40/0x21b4 fs/btrfs/send.c:8041
 _btrfs_ioctl_send+0x314/0x468 fs/btrfs/ioctl.c:5242
 btrfs_ioctl+0x638/0xb08
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
irq event stamp: 85754
hardirqs last  enabled at (85753): [<ffff8000122096ac>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (85753): [<ffff8000122096ac>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (85754): [<ffff800012124e3c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (85724): [<ffff80000803308c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (85722): [<ffff800008033058>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---