BTRFS info (device loop7): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d BTRFS info (device loop7): at unmount dio bytes count 36864 ------------[ cut here ]------------ WARNING: fs/btrfs/block-group.c:172 at btrfs_put_block_group+0x2cc/0x364 fs/btrfs/block-group.c:172, CPU#1: syz-executor/6911 Modules linked in: CPU: 1 UID: 0 PID: 6911 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : btrfs_put_block_group+0x2cc/0x364 fs/btrfs/block-group.c:172 lr : btrfs_put_block_group+0x2cc/0x364 fs/btrfs/block-group.c:172 sp : ffff8000a0987900 x29: ffff8000a0987900 x28: dfff800000000000 x27: dead000000000100 x26: 0000000000000001 x25: ffff0000d09661a8 x24: ffff0000d0966000 x23: dfff800000000000 x22: ffff0000ce6e4188 x21: 0000000000000001 x20: 0000000000009000 x19: ffff0000d0966000 x18: 1fffe00033781890 x17: ffff80008f86e000 x16: ffff800080544804 x15: 0000000000000001 x14: 1fffe0001a12cc35 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001a12cc36 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cbeb5580 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff8000825f570c x2 : 0000000000000001 x1 : 0000000000009000 x0 : 0000000000000000 Call trace: btrfs_put_block_group+0x2cc/0x364 fs/btrfs/block-group.c:172 (P) btrfs_free_block_groups+0x9f0/0xd5c fs/btrfs/block-group.c:4573 close_ctree+0x64c/0x1138 fs/btrfs/disk-io.c:4410 btrfs_put_super+0x1ac/0x1c0 fs/btrfs/super.c:74 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_anon_super+0x4c/0x7c fs/super.c:1289 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2129 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 269784 hardirqs last enabled at (269783): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (269784): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (267920): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (267918): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: fs/btrfs/block-group.c:4467 at check_removing_space_info+0x108/0x278 fs/btrfs/block-group.c:4468, CPU#1: syz-executor/6911 Modules linked in: CPU: 1 UID: 0 PID: 6911 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : check_removing_space_info+0x108/0x278 fs/btrfs/block-group.c:4468 lr : check_removing_space_info+0x258/0x278 fs/btrfs/block-group.c:4467 sp : ffff8000a0987900 x29: ffff8000a0987900 x28: dfff800000000000 x27: dead000000000100 x26: 0000000000000001 x25: ffff0000d09671a8 x24: 1fffe0001ba74502 x23: ffff0000ce6e4000 x22: dfff800000000000 x21: 0000000000000000 x20: 0000000000028000 x19: ffff0000dd3a2800 x18: 00000000ffffffff x17: ffff800093598000 x16: ffff800080544804 x15: 0000000000000001 x14: 1fffe0001ba74504 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001ba74505 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cbeb5580 x7 : ffff8000825f0550 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008054490c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000dd3a2800 Call trace: check_removing_space_info+0x108/0x278 fs/btrfs/block-group.c:4468 (P) btrfs_free_block_groups+0xadc/0xd5c fs/btrfs/block-group.c:4585 close_ctree+0x64c/0x1138 fs/btrfs/disk-io.c:4410 btrfs_put_super+0x1ac/0x1c0 fs/btrfs/super.c:74 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_anon_super+0x4c/0x7c fs/super.c:1289 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2129 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 269904 hardirqs last enabled at (269903): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (269904): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (269878): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (269878): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (269787): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop7): space_info DATA+METADATA (sub-group id 0) has 2912256 free, is not full BTRFS info (device loop7): space_info total=3276800, used=163840, 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: fs/btrfs/block-group.c:4478 at check_removing_space_info+0x240/0x278 fs/btrfs/block-group.c:4479, CPU#1: syz-executor/6911 Modules linked in: CPU: 1 UID: 0 PID: 6911 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : check_removing_space_info+0x240/0x278 fs/btrfs/block-group.c:4479 lr : check_removing_space_info+0x234/0x278 fs/btrfs/block-group.c:4478 sp : ffff8000a0987900 x29: ffff8000a0987900 x28: dfff800000000000 x27: dead000000000100 x26: 0000000000000001 x25: ffff0000d09671a8 x24: 1fffe0001ba74502 x23: ffff0000ce6e4000 x22: dfff800000000000 x21: 0000000000000000 x20: 0000000000009000 x19: ffff0000dd3a2800 x18: 1fffe00033781890 x17: ffff80008f86e000 x16: ffff800082e5c71c x15: 0000000000000001 x14: 1fffe0001a2c82c8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001a2c82c9 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cbeb5580 x7 : ffff800082e5e488 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff8000803d4320 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000dd3a2800 Call trace: check_removing_space_info+0x240/0x278 fs/btrfs/block-group.c:4479 (P) btrfs_free_block_groups+0xadc/0xd5c fs/btrfs/block-group.c:4585 close_ctree+0x64c/0x1138 fs/btrfs/disk-io.c:4410 btrfs_put_super+0x1ac/0x1c0 fs/btrfs/super.c:74 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_anon_super+0x4c/0x7c fs/super.c:1289 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2129 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 270146 hardirqs last enabled at (270145): [] __call_rcu_common kernel/rcu/tree.c:3144 [inline] hardirqs last enabled at (270145): [] call_rcu+0x65c/0x978 kernel/rcu/tree.c:3239 hardirqs last disabled at (270146): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (270036): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (270036): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (269907): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop7): space_info DATA+METADATA (sub-group id 0) has 2912256 free, is not full BTRFS info (device loop7): space_info total=3276800, used=163840, 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 (btrfs) ------------[ cut here ]------------ kernel BUG at fs/super.c:653! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6911 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:651 lr : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:651 sp : ffff8000a0987ba0 x29: ffff8000a0987ba0 x28: 00007dfeb326b7b0 x27: ffff80008f871fc8 x26: ffffffffffffffff x25: dfff800000000000 x24: 1fffe0001a50bcf0 x23: ffff80008b494e20 x22: dfff800000000000 x21: 0000000000000000 x20: ffff80008ffe6fc0 x19: ffff0000d285e000 x18: 1fffe0003377d090 x17: ffff80008f86e000 x16: ffff800082e5c7a4 x15: 0000000000000001 x14: 1ffff00014130ef0 x13: 0000000000000000 x12: 0000000000000000 x11: 00000000000010f1 x10: 0000000000ff0100 x9 : fb300789c25bf300 x8 : fb300789c25bf300 x7 : ffff800080575c38 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807f0b34 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002f Call trace: generic_shutdown_super+0x2b4/0x2b8 fs/super.c:651 (P) kill_anon_super+0x4c/0x7c fs/super.c:1289 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2129 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: b0051ca0 91018000 9119a261 97cd632e (d4210000) ---[ end trace 0000000000000000 ]---