(syz.1.98,6246,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.11.0-syzkaller #0 Not tainted ------------------------------------- syz.1.98/6246 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: 2 locks held by syz.1.98/6246: #0: ffff88801264ce58 (&osb->obs_trim_fs_mutex){+.+.}-{3:3}, at: ocfs2_trim_fs_lock_res_init+0x35/0x4d0 fs/ocfs2/dlmglue.c:702 #1: ffff888011dded80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #1: ffff888011dded80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_trim_mainbm fs/ocfs2/alloc.c:7564 [inline] #1: ffff888011dded80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_trim_fs+0xb26/0x2940 fs/ocfs2/alloc.c:7702 stack backtrace: CPU: 0 UID: 0 PID: 6246 Comm: syz.1.98 Not tainted 6.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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_block fs/ocfs2/buffer_head_io.h:52 [inline] ocfs2_read_group_descriptor+0xe7/0x240 fs/ocfs2/suballoc.c:303 ocfs2_trim_mainbm fs/ocfs2/alloc.c:7606 [inline] ocfs2_trim_fs+0xeb3/0x2940 fs/ocfs2/alloc.c:7702 ocfs2_ioctl+0x71d/0x7e0 fs/ocfs2/ioctl.c:936 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 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: 0033:0x7effe857def9 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:00007effe83f8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007effe8735f80 RCX: 00007effe857def9 RDX: 0000000020000180 RSI: 00000000c0185879 RDI: 0000000000000004 RBP: 00007effe85f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007effe8735f80 R15: 00007ffde4ba88a8 (syz.1.98,6246,1):ocfs2_trim_mainbm:7610 ERROR: status = -12