BTRFS info (device loop7): at unmount dio bytes count 36864 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5226 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: 5226 Comm: syz-executor Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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 : ffff8000202f7750 x29: ffff8000202f7750 x28: dfff800000000000 x27: ffff80001523a700 x26: 0000000000000002 x25: 0000000000000001 x24: ffff0000e5428800 x23: 0000000000000000 x22: 1fffe0001ca8512c x21: dfff800000000000 x20: 0000000000009000 x19: ffff0000e5428800 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000824f3a0 x15: 0000000000000003 x14: 00000000ffff8000 x13: 00000000a179f48c x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000c1f4b680 x8 : ffff80000a2b38d4 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000a2b36b8 x2 : 0000000000000001 x1 : 0000000000009000 x0 : 0000000000000000 Call trace: btrfs_put_block_group+0x248/0x288 fs/btrfs/block-group.c:142 btrfs_free_block_groups+0x730/0xb54 fs/btrfs/block-group.c:3978 close_ctree+0x654/0x898 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/0x74 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+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 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+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 317506 hardirqs last enabled at (317505): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (317506): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (316612): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (316612): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (316607): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (316607): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (316607): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (316607): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 4a9f9b1ea6e75e97 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5226 at fs/btrfs/block-group.c:3996 btrfs_free_block_groups+0x850/0xb54 fs/btrfs/block-group.c:3995 Modules linked in: CPU: 1 PID: 5226 Comm: syz-executor Tainted: G W 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0x850/0xb54 fs/btrfs/block-group.c:3995 lr : btrfs_free_block_groups+0xa8c/0xb54 fs/btrfs/block-group.c:3995 sp : ffff8000202f7780 x29: ffff8000202f77a0 x28: dfff800000000000 x27: ffff80001523a700 x26: 1fffe0001d0eb220 x25: 0000000000000001 x24: 0000000000028000 x23: ffff0000e542f800 x22: ffff0000e542f8a8 x21: ffff0000e87599d0 x20: ffff0000e8759100 x19: ffff0000e8758000 x18: 1fffe0001ca85f0a x17: 0000000000000000 x16: ffff80000824f3a0 x15: 0000000000000003 x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000c1f4b680 x8 : ffff80000a2c83e0 x7 : ffff80000a2ae200 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008306180 x2 : 0000000000000001 x1 : 0000000000028000 x0 : 0000000000000000 Call trace: btrfs_free_block_groups+0x850/0xb54 fs/btrfs/block-group.c:3995 close_ctree+0x654/0x898 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/0x74 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+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 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+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 317682 hardirqs last enabled at (317681): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (317682): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (317642): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (317642): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (317509): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (317509): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (317509): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (317509): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 4a9f9b1ea6e75e98 ]--- BTRFS info (device loop7): space_info 5 has 2985984 free, is not full BTRFS info (device loop7): space_info total=3276800, used=90112, pinned=0, reserved=36864, may_use=163840, readonly=0 zone_unusable=0 BTRFS info (device loop7): global_block_rsv: size 0 reserved 0 BTRFS info (device loop7): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop7): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop7): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop7): delayed_refs_rsv: size 0 reserved 0 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5226 at fs/btrfs/block-group.c:4008 btrfs_free_block_groups+0xa5c/0xb54 fs/btrfs/block-group.c:4008 Modules linked in: CPU: 1 PID: 5226 Comm: syz-executor Tainted: G W 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0xa5c/0xb54 fs/btrfs/block-group.c:4008 lr : btrfs_free_block_groups+0xa5c/0xb54 fs/btrfs/block-group.c:4008 sp : ffff8000202f7780 x29: ffff8000202f77a0 x28: dfff800000000000 x27: ffff80001523a700 x26: 1fffe0001d0eb220 x25: 0000000000000001 x24: 0000000000009000 x23: ffff0000e542f800 x22: ffff0000e542f8a8 x21: ffff0000e87599d0 x20: ffff0000e8759100 x19: dead000000000100 x18: 1fffe0003683298e x17: 1fffe0003683298e x16: ffff8000082ed0ac x15: ffff800014c0f2a0 x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000c1f4b680 x8 : ffff80000a2c83b0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008046154 x2 : 0000000000000006 x1 : 0000000000009000 x0 : 0000000000000000 Call trace: btrfs_free_block_groups+0xa5c/0xb54 fs/btrfs/block-group.c:4008 close_ctree+0x654/0x898 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/0x74 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+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 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+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 317884 hardirqs last enabled at (317883): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] hardirqs last enabled at (317883): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:4783 hardirqs last disabled at (317884): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (317812): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (317812): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (317707): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (317707): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (317707): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (317707): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 4a9f9b1ea6e75e99 ]--- BTRFS info (device loop7): space_info 5 has 2985984 free, is not full BTRFS info (device loop7): space_info total=3276800, used=90112, pinned=0, reserved=36864, may_use=163840, readonly=0 zone_unusable=0 BTRFS info (device loop7): global_block_rsv: size 0 reserved 0 BTRFS info (device loop7): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop7): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop7): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop7): delayed_refs_rsv: size 0 reserved 0 VFS: Busy inodes after unmount of loop7. Self-destruct in 5 seconds. Have a nice day...