BTRFS info (device loop0): at unmount dio bytes count 65536 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4029 at fs/btrfs/block-group.c:142 btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 Modules linked in: CPU: 0 PID: 4029 Comm: syz-executor Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 : ffff80001f117830 x29: ffff80001f117830 x28: 1fffe0001a090a2c x27: ffff0000d04811d0 x26: dfff800000000000 x25: ffff800014821c60 x24: 0000000000000002 x23: 0000000000000001 x22: ffff0000d0485000 x21: dfff800000000000 x20: 0000000000010000 x19: ffff0000d0485000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d4c48 x15: 0000000000000003 x14: 00000000ffff8000 x13: 00000000f99049b7 x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a03a6fc x8 : ffff0000dbdf8000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000a03a4e0 x2 : 0000000000000001 x1 : 0000000000010000 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:3982 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:2390 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 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:949 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: 896216 hardirqs last enabled at (896215): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (896216): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (895030): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (895030): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (894897): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (894897): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (894897): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (894897): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace 3fdca93abc027c10 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4029 at fs/btrfs/block-group.c:4000 btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:4001 Modules linked in: CPU: 0 PID: 4029 Comm: syz-executor Tainted: G W 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:4001 lr : btrfs_free_block_groups+0xa7c/0xb44 fs/btrfs/block-group.c:3999 sp : ffff80001f117860 x29: ffff80001f117880 x28: 1fffe0001ed14a20 x27: ffff0000d04801d0 x26: dfff800000000000 x25: ffff0000f68a59d0 x24: 0000000000028000 x23: ffff0000d0481000 x22: ffff0000d04810a8 x21: 0000000000000000 x20: ffff0000f68a5100 x19: ffff0000f68a4000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d4c48 x15: 0000000000000003 x14: 00000000111a5658 x13: 1ffff0000282c06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a04dbc0 x8 : ffff0000dbdf8000 x7 : ffff80000a0353e8 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000d0481000 x0 : ffff0000f68a4000 Call trace: btrfs_free_block_groups+0x830/0xb44 fs/btrfs/block-group.c:4001 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:2390 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 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:949 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: 896420 hardirqs last enabled at (896419): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (896420): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (896364): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (896364): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (896219): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (896219): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (896219): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (896219): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace 3fdca93abc027c11 ]--- BTRFS info (device loop0): space_info 5 has 2867200 free, is not full BTRFS info (device loop0): space_info total=3276800, used=180224, pinned=0, reserved=65536, 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: 4029 at fs/btrfs/block-group.c:4012 btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4013 Modules linked in: CPU: 0 PID: 4029 Comm: syz-executor Tainted: G W 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4013 lr : btrfs_free_block_groups+0xa54/0xb44 fs/btrfs/block-group.c:4012 sp : ffff80001f117860 x29: ffff80001f117880 x28: 1fffe0001ed14a20 x27: ffff0000d04801d0 x26: dfff800000000000 x25: ffff0000f68a59d0 x24: 0000000000010000 x23: ffff0000d0481000 x22: ffff0000d04810a8 x21: 0000000000000000 x20: ffff0000f68a5100 x19: ffff0000f68a4000 x18: 0000000000000100 x17: 0000000000000000 x16: ffff8000082bf3c8 x15: 00000000c0000000 x14: 00000000ffff8000 x13: 1ffff0000282c06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a04db98 x8 : ffff0000dbdf8000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000d0481000 x0 : ffff0000f68a4000 Call trace: btrfs_free_block_groups+0xa64/0xb44 fs/btrfs/block-group.c:4013 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:2390 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 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:949 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: 896800 hardirqs last enabled at (896799): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] hardirqs last enabled at (896799): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:4784 hardirqs last disabled at (896800): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (896764): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (896764): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (896743): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (896743): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (896743): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (896743): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace 3fdca93abc027c12 ]--- BTRFS info (device loop0): space_info 5 has 2867200 free, is not full BTRFS info (device loop0): space_info total=3276800, used=180224, pinned=0, reserved=65536, 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...