EXT4-fs error (device loop7): ext4_mb_generate_buddy:1220: group 0, block bitmap and bg descriptor inconsistent: 227 vs 220 free clusters ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 19259 at kernel/locking/lockdep.c:234 hlock_class kernel/locking/lockdep.c:234 [inline] WARNING: CPU: 1 PID: 19259 at kernel/locking/lockdep.c:234 check_wait_context kernel/locking/lockdep.c:4852 [inline] WARNING: CPU: 1 PID: 19259 at kernel/locking/lockdep.c:234 __lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5178 Modules linked in: CPU: 1 UID: 0 PID: 19259 Comm: syz.7.2967 Not tainted 6.14.0-rc6-syzkaller-00003-g4d872d51bc9d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4852 [inline] RIP: 0010:__lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5178 Code: 00 00 83 3d 21 4c a0 0e 00 75 23 90 48 c7 c7 40 b2 2a 8c 48 c7 c6 40 b5 2a 8c e8 b7 bd e4 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 31 db 48 81 c3 c4 00 00 00 48 89 d8 48 c1 e8 03 0f RSP: 0018:ffffc90004c77610 EFLAGS: 00010046 RAX: 86b1a92ca305e600 RBX: 0000000000001420 RCX: 0000000000080000 RDX: dffffc0000000000 RSI: 000000000000344e RDI: 000000000000344f RBP: 00000000000c1420 R08: ffffffff81819e52 R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffff8880316164d4 R13: 000000000000000a R14: 1ffff110062c2cac R15: ffff888031616560 FS: 00007f86e6d086c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000043b06000 CR4: 0000000000350ef0 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 _double_lock_balance kernel/sched/sched.h:3006 [inline] double_lock_balance kernel/sched/sched.h:3051 [inline] find_lock_lowest_rq+0x1e1/0x670 kernel/sched/rt.c:1914 push_rt_task+0x144/0x790 kernel/sched/rt.c:2048 push_rt_tasks kernel/sched/rt.c:2096 [inline] task_woken_rt+0x14c/0x220 kernel/sched/rt.c:2394 ttwu_do_activate+0x30c/0x760 kernel/sched/core.c:3741 ttwu_queue kernel/sched/core.c:4002 [inline] try_to_wake_up+0x89b/0x1470 kernel/sched/core.c:4330 wake_up_process kernel/sched/core.c:4463 [inline] wake_up_q+0xc8/0x120 kernel/sched/core.c:1075 futex_wake+0x523/0x5c0 kernel/futex/waitwake.c:199 do_futex+0x392/0x560 kernel/futex/syscalls.c:107 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f86e5f8d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f86e6d080e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f86e61a6168 RCX: 00007f86e5f8d169 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f86e61a616c RBP: 00007f86e61a6160 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f86e61a616c R13: 0000000000000000 R14: 00007ffd906d3af0 R15: 00007ffd906d3bd8