loop0: detected capacity change from 0 to 6957 (syz.0.0,5116,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0 Not tainted ------------------------------------- syz.0.0/5116 is trying to release lock (&oi->ip_io_mutex) at: [] ocfs2_read_blocks+0x11c6/0x1620 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.0.0/5116: #0: ffff8880334720e0 (&type->s_umount_key#46/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344 stack backtrace: CPU: 0 UID: 0 PID: 5116 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_unlock_imbalance_bug+0x256/0x2c0 kernel/locking/lockdep.c:5199 __lock_release kernel/locking/lockdep.c:5436 [inline] lock_release+0x5cb/0xa30 kernel/locking/lockdep.c:5780 __mutex_unlock_slowpath+0xe2/0x750 kernel/locking/mutex.c:912 ocfs2_read_blocks+0x11c6/0x1620 fs/ocfs2/buffer_head_io.c:394 ocfs2_map_slot_buffers fs/ocfs2/slot_map.c:385 [inline] ocfs2_init_slot_info+0xb35/0x13d0 fs/ocfs2/slot_map.c:424 ocfs2_initialize_super fs/ocfs2/super.c:2274 [inline] ocfs2_fill_super+0x31b7/0x5880 fs/ocfs2/super.c:994 mount_bdev+0x20a/0x2d0 fs/super.c:1679 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3472 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997 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: 0033:0x7fda07b7f69a 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:00007fda0898ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fda0898cef0 RCX: 00007fda07b7f69a RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 00007fda0898ceb0 RBP: 0000000020000080 R08: 00007fda0898cef0 R09: 0000000002a00403 R10: 0000000002a00403 R11: 0000000000000246 R12: 00000000200000c0 R13: 00007fda0898ceb0 R14: 000000000000446f R15: 00000000200003c0 (syz.0.0,5116,0):ocfs2_map_slot_buffers:388 ERROR: status = -12 (syz.0.0,5116,0):ocfs2_init_slot_info:426 ERROR: status = -12 (syz.0.0,5116,0):ocfs2_initialize_super:2276 ERROR: status = -12 (syz.0.0,5116,0):ocfs2_fill_super:1178 ERROR: status = -12