loop0: detected capacity change from 0 to 32768
BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5323)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c (crc32c-x86_64) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): rebuilding free space tree
assertion failed: folio_order(folio) == 0, in fs/btrfs/disk-io.c:3856
------------[ cut here ]------------
kernel BUG at fs/btrfs/disk-io.c:3856!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-13524-gf4d2ef48250a #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:write_dev_supers fs/btrfs/disk-io.c:3856 [inline]
RIP: 0010:write_all_supers+0x400f/0x4090 fs/btrfs/disk-io.c:4153
Code: 1d fe 90 0f 0b e8 f1 d7 d0 fd 48 c7 c7 40 cd 8c 8c 48 c7 c6 00 16 8d 8c 48 c7 c2 c0 cd 8c 8c b9 10 0f 00 00 e8 32 8d 34 fd 90 <0f> 0b e8 ca d7 d0 fd 4c 89 f7 48 c7 c6 80 00 8d 8c e8 2b 21 1d fe
RSP: 0018:ffffc9000d4bebc0 EFLAGS: 00010246
RAX: 0000000000000045 RBX: 0000000000000002 RCX: 381f84f60259ec00
RDX: ffffc9000dfba000 RSI: 0000000000007d5b RDI: 0000000000007d5c
RBP: ffffc9000d4bef90 R08: ffffffff81a2a49c R09: fffffbfff1d7a978
R10: dffffc0000000000 R11: fffffbfff1d7a978 R12: ffffea0000482d08
R13: 1ffffd40000905a1 R14: 1ffffd40000905a0 R15: ffffea0000482d00
FS:  00007f68656746c0(0000) GS:ffff88808c596000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bd7984634 CR3: 0000000041248000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_sync_log+0x1f66/0x2ac0 fs/btrfs/tree-log.c:3163
 btrfs_sync_file+0xd9e/0x11e0 fs/btrfs/file.c:1691
 generic_write_sync include/linux/fs.h:2976 [inline]
 btrfs_do_write_iter+0x5fe/0x7c0 fs/btrfs/file.c:1390
 iter_file_splice_write+0xbdf/0x1530 fs/splice.c:738
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x11b/0x220 fs/splice.c:1158
 splice_direct_to_actor+0x595/0xc90 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x281/0x3d0 fs/splice.c:1227
 do_sendfile+0x582/0x8c0 fs/read_write.c:1368
 __do_sys_sendfile64 fs/read_write.c:1429 [inline]
 __se_sys_sendfile64+0x17e/0x1e0 fs/read_write.c:1415
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f686478d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6865674038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f68649a5fa0 RCX: 00007f686478d169
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f686480e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f68649a5fa0 R15: 00007ffebcad8e48
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_dev_supers fs/btrfs/disk-io.c:3856 [inline]
RIP: 0010:write_all_supers+0x400f/0x4090 fs/btrfs/disk-io.c:4153
Code: 1d fe 90 0f 0b e8 f1 d7 d0 fd 48 c7 c7 40 cd 8c 8c 48 c7 c6 00 16 8d 8c 48 c7 c2 c0 cd 8c 8c b9 10 0f 00 00 e8 32 8d 34 fd 90 <0f> 0b e8 ca d7 d0 fd 4c 89 f7 48 c7 c6 80 00 8d 8c e8 2b 21 1d fe
RSP: 0018:ffffc9000d4bebc0 EFLAGS: 00010246
RAX: 0000000000000045 RBX: 0000000000000002 RCX: 381f84f60259ec00
RDX: ffffc9000dfba000 RSI: 0000000000007d5b RDI: 0000000000007d5c
RBP: ffffc9000d4bef90 R08: ffffffff81a2a49c R09: fffffbfff1d7a978
R10: dffffc0000000000 R11: fffffbfff1d7a978 R12: ffffea0000482d08
R13: 1ffffd40000905a1 R14: 1ffffd40000905a0 R15: ffffea0000482d00
FS:  00007f68656746c0(0000) GS:ffff88808c596000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6865653990 CR3: 0000000041248000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400