BTRFS info (device loop0): last unmount of filesystem c6b85f58-0c7e-41ca-a553-c8d9f94f6663 assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4707 ------------[ cut here ]------------ kernel BUG at fs/btrfs/ctree.h:3717! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7288 Comm: syz-executor Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:assertfail+0x18/0x1a fs/btrfs/ctree.h:3717 Code: 80 b5 4d 8b 48 c7 c2 a0 b2 4d 8b e8 17 e4 ff ff 0f 0b 89 f1 48 89 fe 48 c7 c7 00 e6 4d 8b 48 c7 c2 70 b7 4d 8b e8 fd e3 ff ff <0f> 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec RSP: 0018:ffffc900030cfb38 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff88806289cd58 RCX: b86bc34e35f66f00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900030cfce0 R08: ffffffff816e4eac R09: fffff52000619f09 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88806289c010 R13: ffff88806289c000 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055557b7bb500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd320600000 CR3: 000000007b171000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: close_ctree+0x830/0xc35 fs/btrfs/disk-io.c:4707 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_anon_super+0x37/0x60 fs/super.c:1128 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2449 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fef4417f327 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc9fdc7638 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fef441f0134 RCX: 00007fef4417f327 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9fdc76f0 RBP: 00007ffc9fdc76f0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc9fdc8770 R13: 00007fef441f0134 R14: 0000000000034950 R15: 00007ffc9fdc87b0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:assertfail+0x18/0x1a fs/btrfs/ctree.h:3717 Code: 80 b5 4d 8b 48 c7 c2 a0 b2 4d 8b e8 17 e4 ff ff 0f 0b 89 f1 48 89 fe 48 c7 c7 00 e6 4d 8b 48 c7 c2 70 b7 4d 8b e8 fd e3 ff ff <0f> 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec RSP: 0018:ffffc900030cfb38 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff88806289cd58 RCX: b86bc34e35f66f00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900030cfce0 R08: ffffffff816e4eac R09: fffff52000619f09 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88806289c010 R13: ffff88806289c000 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055557b7bb500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4ab90d7000 CR3: 000000007b171000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400