BTRFS info (device loop0): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d VFS: Busy inodes after unmount of loop0 (btrfs) ------------[ cut here ]------------ kernel BUG at fs/super.c:652! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 5843 Comm: syz-executor150 Not tainted 6.14.0-rc2-next-20250214-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a9 1a ee ff 48 8b 13 48 c7 c7 c0 c4 38 8c 4c 89 e6 e8 87 85 eb fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000418fbb0 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8f0a2e00 RCX: 0952fb7c0014f700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff110062738f0 R08: ffffffff81a16efc R09: 1ffff92000831f10 R10: dffffc0000000000 R11: fffff52000831f11 R12: ffff88803139c668 R13: dffffc0000000000 R14: ffffffff8c6bfa38 R15: ffff88803139c780 FS: 00005555576c6380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb3e63f9458 CR3: 00000000784c6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_anon_super+0x3b/0x70 fs/super.c:1237 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2100 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1424 task_work_run+0x24f/0x310 kernel/task_work.c:227 ptrace_notify+0x2d9/0x380 kernel/signal.c:2522 ptrace_report_syscall include/linux/ptrace.h:415 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline] syscall_exit_work+0xc7/0x1d0 kernel/entry/common.c:173 syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline] syscall_exit_to_user_mode+0x24a/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fef5bf32f37 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd02d58dd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fef5bf32f37 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd02d58e90 RBP: 00007ffd02d58e90 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd02d59f10 R13: 00005555576c76c0 R14: 431bde82d7b634db R15: 00007ffd02d59f30 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a9 1a ee ff 48 8b 13 48 c7 c7 c0 c4 38 8c 4c 89 e6 e8 87 85 eb fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000418fbb0 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8f0a2e00 RCX: 0952fb7c0014f700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff110062738f0 R08: ffffffff81a16efc R09: 1ffff92000831f10 R10: dffffc0000000000 R11: fffff52000831f11 R12: ffff88803139c668 R13: dffffc0000000000 R14: ffffffff8c6bfa38 R15: ffff88803139c780 FS: 00005555576c6380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb3e67ff440 CR3: 00000000784c6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400