BTRFS info (device loop2): enabling ssd optimizations ------------[ cut here ]------------ WARNING: CPU: 1 PID: 27449 at fs/read_write.c:525 __kernel_write+0x8cc/0xa60 Modules linked in: CPU: 1 PID: 27449 Comm: syz-executor.2 Not tainted 5.15.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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 14 72 ab ff <0f> 0b 49 c7 c6 f7 ff ff ff eb 9d e8 04 72 ab ff eb 05 e8 fd 71 ab RSP: 0018:ffffc900100a77a0 EFLAGS: 00010287 RAX: ffffffff81d4b03c RBX: 00000000000a801d RCX: 0000000000040000 RDX: ffffc90002de1000 RSI: 0000000000002e6b RDI: 0000000000002e6c RBP: ffffc900100a7930 R08: ffffffff81d4a8b0 R09: ffffc900100a7890 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92002014f00 R13: dffffc0000000000 R14: ffff88801f8cd704 R15: 0000000000000011 FS: 00007f3ffe5356c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30727000 CR3: 000000001dd2a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7f3ffffb3ae9 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:00007f3ffe5350c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f40000d2f80 RCX: 00007f3ffffb3ae9 RDX: 00000000200000c0 RSI: 0000000040489426 RDI: 0000000000000004 RBP: 00007f3ffffff47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f40000d2f80 R15: 00007ffca6c99398