(syz.0.0,5115,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.11.0-rc7-syzkaller-00149-g0babf683783d #0 Not tainted ------------------------------------- syz.0.0/5115 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.0.0/5115: #0: ffff88801ff25100 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #0: ffff88801ff25100 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x46a/0x1f60 fs/ocfs2/file.c:2387 stack backtrace: CPU: 0 UID: 0 PID: 5115 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #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_read_inode_block_full fs/ocfs2/inode.c:1593 [inline] ocfs2_read_inode_block+0x106/0x1e0 fs/ocfs2/inode.c:1605 ocfs2_assign_bh fs/ocfs2/dlmglue.c:2414 [inline] ocfs2_inode_lock_full_nested+0x300/0x1c10 fs/ocfs2/dlmglue.c:2509 ocfs2_inode_lock_for_extent_tree+0x3d/0x180 fs/ocfs2/file.c:2188 ocfs2_prepare_inode_for_write fs/ocfs2/file.c:2254 [inline] ocfs2_file_write_iter+0x693/0x1f60 fs/ocfs2/file.c:2437 aio_write+0x575/0x7d0 fs/aio.c:1633 io_submit_one+0x8a7/0x18b0 fs/aio.c:2052 __do_sys_io_submit fs/aio.c:2111 [inline] __se_sys_io_submit+0x179/0x2f0 fs/aio.c:2081 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: 0033:0x7f973957def9 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:00007f973a3fe038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f9739736058 RCX: 00007f973957def9 RDX: 00000000200002c0 RSI: 0000000000000001 RDI: 00007f973a3dd000 RBP: 00007f97395f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f9739736058 R15: 00007fff155d30e8 (syz.0.0,5115,0):ocfs2_assign_bh:2416 ERROR: status = -12 (syz.0.0,5115,0):ocfs2_inode_lock_full_nested:2511 ERROR: status = -12 (syz.0.0,5115,0):ocfs2_prepare_inode_for_write:2261 ERROR: status = -12 (syz.0.0,5115,0):ocfs2_file_write_iter:2440 ERROR: status = -12