loop0: detected capacity change from 0 to 32768 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5106,0):ocfs2_read_blocks:240 ERROR: status = -12 ===================================== WARNING: bad unlock balance detected! 6.11.0-rc7-syzkaller-00151-gd42f7708e27c #0 Not tainted ------------------------------------- syz.0.0/5106 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: 8 locks held by syz.0.0/5106: #0: ffff88804c25a420 (sb_writers#10){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff888040f389c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline] #1: ffff888040f389c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3979 #2: ffff888011f089c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #2: ffff888011f089c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 #3: ffff888040f3ed80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #3: ffff888040f3ed80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 #4: ffff888011f0a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #4: ffff888011f0a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0x132/0x2870 fs/ocfs2/localalloc.c:636 #5: ffff88804c25a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_mknod+0x150c/0x2b40 fs/ocfs2/namei.c:359 #6: ffff888033a1c0e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350 #7: ffff88800e5cc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448 stack backtrace: CPU: 0 UID: 0 PID: 5106 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00151-gd42f7708e27c #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_block fs/ocfs2/buffer_head_io.h:52 [inline] ocfs2_read_group_descriptor fs/ocfs2/suballoc.c:303 [inline] ocfs2_search_chain+0x2d3/0x26d0 fs/ocfs2/suballoc.c:1810 ocfs2_claim_suballoc_bits+0x11ef/0x2570 fs/ocfs2/suballoc.c:1985 ocfs2_claim_new_inode+0x338/0x870 fs/ocfs2/suballoc.c:2267 ocfs2_mknod_locked+0x17a/0x3b0 fs/ocfs2/namei.c:633 ocfs2_mknod+0x17d4/0x2b40 fs/ocfs2/namei.c:379 vfs_mknod+0x36d/0x3b0 fs/namei.c:4088 do_mknodat+0x3ec/0x5b0 __do_sys_mknodat fs/namei.c:4166 [inline] __se_sys_mknodat fs/namei.c:4163 [inline] __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4163 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: 0033:0x7fdc1e77def9 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:00007fdc1f5ce038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 RAX: ffffffffffffffda RBX: 00007fdc1e935f80 RCX: 00007fdc1e77def9 RDX: 000000000000c1c0 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007fdc1e7f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdc1e935f80 R15: 00007ffe46e02068 (syz.0.0,5106,0):ocfs2_search_chain:1814 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_search_chain:1926 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_claim_suballoc_bits:1995 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_claim_suballoc_bits:2038 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_claim_new_inode:2273 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_claim_new_inode:2288 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_mknod_locked:637 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_mknod:383 ERROR: status = -12 (syz.0.0,5106,0):ocfs2_mknod:500 ERROR: status = -12