option from the mount to silence this warning.
=======================================================
ocfs2: Slot 0 on device (7,0) was already allocated to this node!
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/4429 is trying to acquire lock:
ffff88806e3d8660 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x266/0x980 fs/ocfs2/extent_map.c:984

but task is already holding lock:
ffff88807ca6f8e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a4/0x6f0 fs/ocfs2/journal.c:374

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&journal->j_trans_barrier){.+.+}-{3:3}:
       down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
       ocfs2_start_trans+0x3a4/0x6f0 fs/ocfs2/journal.c:374
       ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline]
       ocfs2_reserve_local_alloc_bits+0xaad/0x2770 fs/ocfs2/localalloc.c:668
       ocfs2_reserve_clusters_with_limit+0x1b6/0xc10 fs/ocfs2/suballoc.c:1184
       ocfs2_expand_inline_dir fs/ocfs2/dir.c:2855 [inline]
       ocfs2_extend_dir+0x77b/0x4c40 fs/ocfs2/dir.c:3200
       ocfs2_prepare_dir_for_insert+0x3217/0x5600 fs/ocfs2/dir.c:4321
       ocfs2_mknod+0xb92/0x2500 fs/ocfs2/namei.c:295
       ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:659
       vfs_mkdir+0x386/0x570 fs/namei.c:4157
       do_mkdirat+0x1d8/0x440 fs/namei.c:4182
       __do_sys_mkdirat fs/namei.c:4197 [inline]
       __se_sys_mkdirat fs/namei.c:4195 [inline]
       __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4195
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #2 (sb_internal#2){.+.+}-{0:0}:
       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
       __sb_start_write include/linux/fs.h:1897 [inline]
       sb_start_intwrite include/linux/fs.h:2019 [inline]
       ocfs2_start_trans+0x2a5/0x6f0 fs/ocfs2/journal.c:372
       ocfs2_expand_inline_dir fs/ocfs2/dir.c:2868 [inline]
       ocfs2_extend_dir+0x107a/0x4c40 fs/ocfs2/dir.c:3200
       ocfs2_prepare_dir_for_insert+0x3217/0x5600 fs/ocfs2/dir.c:4321
       ocfs2_mknod+0xb92/0x2500 fs/ocfs2/namei.c:295
       ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:659
       vfs_mkdir+0x386/0x570 fs/namei.c:4157
       do_mkdirat+0x1d8/0x440 fs/namei.c:4182
       __do_sys_mkdirat fs/namei.c:4197 [inline]
       __se_sys_mkdirat fs/namei.c:4195 [inline]
       __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4195
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}:
       down_write+0x36/0x60 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:764 [inline]
       ocfs2_reserve_local_alloc_bits+0x11e/0x2770 fs/ocfs2/localalloc.c:635
       ocfs2_reserve_clusters_with_limit+0x1b6/0xc10 fs/ocfs2/suballoc.c:1184
       ocfs2_expand_inline_dir fs/ocfs2/dir.c:2855 [inline]
       ocfs2_extend_dir+0x77b/0x4c40 fs/ocfs2/dir.c:3200
       ocfs2_prepare_dir_for_insert+0x3217/0x5600 fs/ocfs2/dir.c:4321
       ocfs2_mknod+0xb92/0x2500 fs/ocfs2/namei.c:295
       ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:659
       vfs_mkdir+0x386/0x570 fs/namei.c:4157
       do_mkdirat+0x1d8/0x440 fs/namei.c:4182
       __do_sys_mkdirat fs/namei.c:4197 [inline]
       __se_sys_mkdirat fs/namei.c:4195 [inline]
       __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4195
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3162 [inline]
       check_prevs_add kernel/locking/lockdep.c:3281 [inline]
       validate_chain kernel/locking/lockdep.c:3897 [inline]
       __lock_acquire+0x3a03/0x7ea0 kernel/locking/lockdep.c:5171
       lock_acquire+0x1bc/0x4a0 kernel/locking/lockdep.c:5790
       down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
       ocfs2_read_virt_blocks+0x266/0x980 fs/ocfs2/extent_map.c:984
       ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
       ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
       ocfs2_find_entry+0x3a8/0x2080 fs/ocfs2/dir.c:1091
       ocfs2_rename+0x1e64/0x3930 fs/ocfs2/namei.c:1570
       vfs_rename+0xd57/0x10f0 fs/namei.c:4925
       do_renameat2+0x8ac/0xc80 fs/namei.c:5078
       __do_sys_rename fs/namei.c:5124 [inline]
       __se_sys_rename fs/namei.c:5122 [inline]
       __x64_sys_rename+0x82/0x90 fs/namei.c:5122
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

Chain exists of:
  &ocfs2_file_ip_alloc_sem_key --> sb_internal#2 --> &journal->j_trans_barrier

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(&journal->j_trans_barrier);
                               lock(sb_internal#2);
                               lock(&journal->j_trans_barrier);
  rlock(&ocfs2_file_ip_alloc_sem_key);

 *** DEADLOCK ***

5 locks held by syz.0.17/4429:
 #0: ffff88801a752460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402
 #1: ffff88806e3d89c8 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline]
 #1: ffff88806e3d89c8 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: do_renameat2+0x43c/0xc80 fs/namei.c:5017
 #2: ffff88801a752650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_rename+0x1a42/0x3930 fs/ocfs2/namei.c:1490
 #3: ffff88807ca6f8e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3a4/0x6f0 fs/ocfs2/journal.c:374
 #4: ffff888068866990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x2014/0x2240 fs/jbd2/transaction.c:463

stack backtrace:
CPU: 0 PID: 4429 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 check_noncircular+0x2f8/0x400 kernel/locking/lockdep.c:2215
 check_prev_add kernel/locking/lockdep.c:3162 [inline]
 check_prevs_add kernel/locking/lockdep.c:3281 [inline]
 validate_chain kernel/locking/lockdep.c:3897 [inline]
 __lock_acquire+0x3a03/0x7ea0 kernel/locking/lockdep.c:5171
 lock_acquire+0x1bc/0x4a0 kernel/locking/lockdep.c:5790
 down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
 ocfs2_read_virt_blocks+0x266/0x980 fs/ocfs2/extent_map.c:984
 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
 ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
 ocfs2_find_entry+0x3a8/0x2080 fs/ocfs2/dir.c:1091
 ocfs2_rename+0x1e64/0x3930 fs/ocfs2/namei.c:1570
 vfs_rename+0xd57/0x10f0 fs/namei.c:4925
 do_renameat2+0x8ac/0xc80 fs/namei.c:5078
 __do_sys_rename fs/namei.c:5124 [inline]
 __se_sys_rename fs/namei.c:5122 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5122
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc149d9e1d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff5cfeaf58 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fc14a025fa0 RCX: 00007fc149d9e1d9
RDX: 0000000000000000 RSI: 0000200000000400 RDI: 0000200000000f00
RBP: 00007fc149e35888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc14a025fac R14: 00007fc14a025fa0 R15: 00007fc14a025fa0
 </TASK>
syz.0.17 (4429) used greatest stack depth: 19136 bytes left