BTRFS info (device loop0): at unmount dio bytes count 12288 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4022 at fs/btrfs/block-group.c:142 btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 Modules linked in: CPU: 1 PID: 4022 Comm: syz-executor Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 lr : btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 sp : ffff80001be87830 x29: ffff80001be87830 x28: 1fffe0001ab8612c x27: ffff0000dcc641d0 x26: dfff800000000000 x25: ffff800014811580 x24: 0000000000000002 x23: 0000000000000001 x22: ffff0000d5c30800 x21: dfff800000000000 x20: 0000000000003000 x19: ffff0000d5c30800 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d52a4 x15: 0000000000000003 x14: 00000000ffff8000 x13: 0000000084645e8f x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a039204 x8 : ffff0000c9153680 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000a038fe8 x2 : 0000000000000001 x1 : 0000000000003000 x0 : 0000000000000000 Call trace: btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 btrfs_free_block_groups+0x708/0xb44 fs/btrfs/block-group.c:3978 close_ctree+0x608/0x84c fs/btrfs/disk-io.c:4528 btrfs_put_super+0x40/0x50 fs/btrfs/super.c:340 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_anon_super+0x4c/0x80 fs/super.c:1089 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2391 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 403174 hardirqs last enabled at (403173): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (403174): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (403028): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (403028): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (403017): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (403017): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (403017): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (403017): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace 532c214ae56d6769 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4022 at fs/btrfs/block-group.c:3996 btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:3997 Modules linked in: CPU: 1 PID: 4022 Comm: syz-executor Tainted: G W 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:3997 lr : btrfs_free_block_groups+0xa7c/0xb44 fs/btrfs/block-group.c:3995 sp : ffff80001be87860 x29: ffff80001be87880 x28: 1fffe0001cebaa20 x27: ffff0000e69c91d0 x26: dfff800000000000 x25: ffff0000e75d59d0 x24: 0000000000028000 x23: ffff0000dcc64000 x22: ffff0000dcc640a8 x21: 0000000000000000 x20: ffff0000e75d5100 x19: ffff0000e75d4000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d52a4 x15: 0000000000000003 x14: 000000001119adc0 x13: 1ffff0000282a06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a04c6bc x8 : ffff0000c9153680 x7 : ffff80000a033ef0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000dcc64000 x0 : ffff0000e75d4000 Call trace: btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:3997 close_ctree+0x608/0x84c fs/btrfs/disk-io.c:4528 btrfs_put_super+0x40/0x50 fs/btrfs/super.c:340 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_anon_super+0x4c/0x80 fs/super.c:1089 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2391 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 403394 hardirqs last enabled at (403393): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (403394): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (403368): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (403368): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (403177): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (403177): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (403177): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (403177): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace 532c214ae56d676a ]--- BTRFS info (device loop0): space_info 5 has 3043328 free, is not full BTRFS info (device loop0): space_info total=3276800, used=57344, pinned=0, reserved=12288, may_use=163840, readonly=0 zone_unusable=0 BTRFS info (device loop0): global_block_rsv: size 0 reserved 0 BTRFS info (device loop0): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_refs_rsv: size 0 reserved 0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4022 at fs/btrfs/block-group.c:4008 btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4009 Modules linked in: CPU: 0 PID: 4022 Comm: syz-executor Tainted: G W 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4009 lr : btrfs_free_block_groups+0xa54/0xb44 fs/btrfs/block-group.c:4008 sp : ffff80001be87860 x29: ffff80001be87880 x28: 1fffe0001cebaa20 x27: ffff0000e69c91d0 x26: dfff800000000000 x25: ffff0000e75d59d0 x24: 0000000000003000 x23: ffff0000dcc64000 x22: ffff0000dcc640a8 x21: 0000000000000000 x20: ffff0000e75d5100 x19: ffff0000e75d4000 x18: 1fffe0003685738e x17: 1fffe0003685738e x16: ffff8000082bfa24 x15: ffff8000141eec20 x14: ffff0001b42b9c80 x13: 1ffff0000282a06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a04c694 x8 : ffff0000c9153680 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000dcc64000 x0 : ffff0000e75d4000 Call trace: btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4009 close_ctree+0x608/0x84c fs/btrfs/disk-io.c:4528 btrfs_put_super+0x40/0x50 fs/btrfs/super.c:340 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_anon_super+0x4c/0x80 fs/super.c:1089 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2391 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 403646 hardirqs last enabled at (403645): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] hardirqs last enabled at (403645): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:4784 hardirqs last disabled at (403646): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (403640): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (403640): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586 softirqs last disabled at (403539): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (403539): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (403539): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (403539): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641 ---[ end trace 532c214ae56d676b ]--- BTRFS info (device loop0): space_info 5 has 3043328 free, is not full BTRFS info (device loop0): space_info total=3276800, used=57344, pinned=0, reserved=12288, may_use=163840, readonly=0 zone_unusable=0 BTRFS info (device loop0): global_block_rsv: size 0 reserved 0 BTRFS info (device loop0): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_refs_rsv: size 0 reserved 0 VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...