(syz.1.6,3751,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.1.111-syzkaller #0 Not tainted ------------------------------------- syz.1.6/3751 is trying to release lock (&oi->ip_io_mutex) at: [] ocfs2_read_blocks+0x11ef/0x16e0 fs/ocfs2/buffer_head_io.c:394 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz.1.6/3751: #0: ffff88805bc7e0e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228 stack backtrace: CPU: 0 PID: 3751 Comm: syz.1.6 Not tainted 6.1.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_unlock_imbalance_bug+0x24e/0x2c0 kernel/locking/lockdep.c:5102 __lock_release kernel/locking/lockdep.c:5339 [inline] lock_release+0x5ad/0xa20 kernel/locking/lockdep.c:5682 __mutex_unlock_slowpath+0xde/0x750 kernel/locking/mutex.c:907 ocfs2_read_blocks+0x11ef/0x16e0 fs/ocfs2/buffer_head_io.c:394 ocfs2_map_slot_buffers fs/ocfs2/slot_map.c:385 [inline] ocfs2_init_slot_info+0xb30/0x1490 fs/ocfs2/slot_map.c:424 ocfs2_initialize_super fs/ocfs2/super.c:2274 [inline] ocfs2_fill_super+0x30ce/0x5730 fs/ocfs2/super.c:994 mount_bdev+0x2c9/0x3f0 fs/super.c:1443 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x2ba/0xb40 fs/namespace.c:3051 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7e20f7f69a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f7e21db3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7e21db3ef0 RCX: 00007f7e20f7f69a RDX: 0000000020004440 RSI: 0000000020000040 RDI: 00007f7e21db3eb0 RBP: 0000000020004440 R08: 00007f7e21db3ef0 R09: 00000000000008c0 R10: 00000000000008c0 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f7e21db3eb0 R14: 0000000000004459 R15: 0000000020000180 (syz.1.6,3751,1):ocfs2_map_slot_buffers:388 ERROR: status = -12 (syz.1.6,3751,1):ocfs2_init_slot_info:426 ERROR: status = -12 (syz.1.6,3751,0):ocfs2_initialize_super:2276 ERROR: status = -12 (syz.1.6,3751,1):ocfs2_fill_super:1176 ERROR: status = -12