ocfs2: Mounting device (7,1) on (node local, slot 0) with ordered data mode. (syz.1.455,5761,1):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.1.110-syzkaller #0 Not tainted ------------------------------------- syz.1.455/5761 is trying to release lock (&oi->ip_io_mutex) at: [] ocfs2_inode_cache_io_unlock+0x20/0x30 fs/ocfs2/inode.c:1648 but there are no more locks to release! other info that might help us debug this: 8 locks held by syz.1.455/5761: #0: ffff0000f696c460 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000e14ca648 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff0000e14ca648 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: filename_create+0x204/0x468 fs/namei.c:3878 #2: ffff0000e14e6d88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff0000e14e6d88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x164/0x4428 fs/ocfs2/suballoc.c:782 #3: ffff0000e14cd108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #3: ffff0000e14cd108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x164/0x4428 fs/ocfs2/suballoc.c:782 #4: ffff0000e14e2648 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #4: ffff0000e14e2648 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0xfc/0x25dc fs/ocfs2/localalloc.c:635 #5: ffff0000f696c650 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_mknod+0xe64/0x2560 fs/ocfs2/namei.c:359 #6: ffff0000d44d20e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3dc/0x73c fs/ocfs2/journal.c:352 #7: ffff0000cd9b2990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1118/0x13ac fs/jbd2/transaction.c:461 stack backtrace: CPU: 1 PID: 5761 Comm: syz.1.455 Not tainted 6.1.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_unlock_imbalance_bug+0x250/0x2a4 kernel/locking/lockdep.c:5102 lock_release+0x4dc/0xa50 kernel/locking/lockdep.c:5682 __mutex_unlock_slowpath+0xe0/0x6cc kernel/locking/mutex.c:907 mutex_unlock+0x24/0x30 kernel/locking/mutex.c:543 ocfs2_inode_cache_io_unlock+0x20/0x30 fs/ocfs2/inode.c:1648 ocfs2_metadata_cache_io_unlock+0x6c/0x90 fs/ocfs2/uptodate.c:95 ocfs2_read_blocks+0x11d0/0x17e8 fs/ocfs2/buffer_head_io.c:394 ocfs2_read_block fs/ocfs2/buffer_head_io.h:52 [inline] ocfs2_read_group_descriptor fs/ocfs2/suballoc.c:299 [inline] ocfs2_search_chain+0x28c/0x239c fs/ocfs2/suballoc.c:1757 ocfs2_claim_suballoc_bits+0xd38/0x1e1c fs/ocfs2/suballoc.c:1930 ocfs2_claim_new_inode+0x2d0/0x798 fs/ocfs2/suballoc.c:2210 ocfs2_mknod_locked+0x134/0x2e4 fs/ocfs2/namei.c:633 ocfs2_mknod+0x10ac/0x2560 fs/ocfs2/namei.c:379 vfs_mknod+0x3c8/0x448 fs/namei.c:3987 do_mknodat+0x3f8/0x610 __do_sys_mknodat fs/namei.c:4065 [inline] __se_sys_mknodat fs/namei.c:4062 [inline] __arm64_sys_mknodat+0xb0/0xcc fs/namei.c:4062 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 (syz.1.455,5761,1):ocfs2_search_chain:1761 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_search_chain:1871 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_claim_suballoc_bits:1940 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_claim_suballoc_bits:1983 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_claim_new_inode:2216 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_claim_new_inode:2231 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_mknod_locked:637 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_mknod:383 ERROR: status = -12 (syz.1.455,5761,1):ocfs2_mknod:500 ERROR: status = -12