loop0: detected capacity change from 0 to 32768
BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5334)
BTRFS info (device loop0 state S): first mount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop0 state S): using blake2b (blake2b-256-generic) checksum algorithm
BTRFS info (device loop0 state S): using free-space-tree
workqueue: max_active 2097158 requested for btrfs-worker is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-delalloc is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-endio is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-endio-meta is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-rmw is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-endio-write is out of range, clamping between 1 and 2048
workqueue: max_active 2097158 requested for btrfs-compressed-write is out of range, clamping between 1 and 2048
BTRFS info (device loop0 state CS): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS warning (device loop0 state CS): transaction 9 (with 12288 dirty metadata bytes) is not committed
assertion failed: !found :: 0, in fs/btrfs/disk-io.c:4190
------------[ cut here ]------------
kernel BUG at fs/btrfs/disk-io.c:4190!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted 6.16.0-rc6-syzkaller-00121-g6832a9317eee #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:warn_about_uncommitted_trans fs/btrfs/disk-io.c:4190 [inline]
RIP: 0010:close_ctree+0xd5d/0xd60 fs/btrfs/disk-io.c:4413
Code: ff ff e8 a6 6a 96 00 48 c7 c7 20 4e cd 8b 48 c7 c6 a0 99 cd 8b 31 d2 48 c7 c1 a0 4e cd 8b 41 b8 5e 10 00 00 e8 84 d4 fd ff 90 <0f> 0b cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f
RSP: 0018:ffffc9000edffb60 EFLAGS: 00010246
RAX: 0000000000000039 RBX: ffff888053554d38 RCX: 6a462a3f45ba5100
RDX: ffffc9000dd12000 RSI: 000000000002195b RDI: 000000000002195c
RBP: ffffc9000edffd00 R08: ffff88801fc24293 R09: 1ffff11003f84852
R10: dffffc0000000000 R11: ffffed1003f84853 R12: ffffc9000edffc00
R13: ffffc9000edffc20 R14: ffffc9000edffbe0 R15: ffff88805260e000
FS:  00007f5e813316c0(0000) GS:ffff88808d21a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055da0b6c41c0 CR3: 00000000441cf000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_anon_super+0x3b/0x70 fs/super.c:1282
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2095
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417
 task_work_run+0x1d1/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e8059014a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f5e81330e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffec RBX: 00007f5e81330ef0 RCX: 00007f5e8059014a
RDX: 0000200000000080 RSI: 0000200000000040 RDI: 00007f5e81330eb0
RBP: 0000200000000080 R08: 00007f5e81330ef0 R09: 000000000001c005
R10: 000000000001c005 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f5e81330eb0 R14: 000000000000559f R15: 00002000000000c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:warn_about_uncommitted_trans fs/btrfs/disk-io.c:4190 [inline]
RIP: 0010:close_ctree+0xd5d/0xd60 fs/btrfs/disk-io.c:4413
Code: ff ff e8 a6 6a 96 00 48 c7 c7 20 4e cd 8b 48 c7 c6 a0 99 cd 8b 31 d2 48 c7 c1 a0 4e cd 8b 41 b8 5e 10 00 00 e8 84 d4 fd ff 90 <0f> 0b cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f
RSP: 0018:ffffc9000edffb60 EFLAGS: 00010246
RAX: 0000000000000039 RBX: ffff888053554d38 RCX: 6a462a3f45ba5100
RDX: ffffc9000dd12000 RSI: 000000000002195b RDI: 000000000002195c
RBP: ffffc9000edffd00 R08: ffff88801fc24293 R09: 1ffff11003f84852
R10: dffffc0000000000 R11: ffffed1003f84853 R12: ffffc9000edffc00
R13: ffffc9000edffc20 R14: ffffc9000edffbe0 R15: ffff88805260e000
FS:  00007f5e813316c0(0000) GS:ffff88808d21a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055da0b6dd590 CR3: 00000000441cf000 CR4: 0000000000352ef0