======================================================
WARNING: possible circular locking dependency detected
6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0 Not tainted
------------------------------------------------------
syz.8.1629/17790 is trying to acquire lock:
ffff88802b0c2360 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xb6/0x320

but task is already holding lock:
ffff88802b0c23f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x320

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&oi->ip_xattr_sem){++++}-{4:4}:
       lock_acquire+0x120/0x360
       down_read+0x46/0x2e0
       ocfs2_init_acl+0x2f9/0x720
       ocfs2_mknod+0x1321/0x2050
       ocfs2_mkdir+0x191/0x440
       vfs_mkdir+0x306/0x510
       do_mkdirat+0x247/0x590
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #3 (jbd2_handle){++++}-{0:0}:
       lock_acquire+0x120/0x360
       start_this_handle+0x1fa7/0x21c0
       jbd2__journal_start+0x2c1/0x5b0
       jbd2_journal_start+0x2a/0x40
       ocfs2_start_trans+0x376/0x6d0
       ocfs2_reserve_suballoc_bits+0x711/0x4640
       ocfs2_reserve_new_metadata_blocks+0x403/0x940
       ocfs2_extend_dir+0xc76/0x4870
       ocfs2_prepare_dir_for_insert+0x2fe8/0x5450
       ocfs2_symlink+0xaa4/0x23e0
       vfs_symlink+0x143/0x2f0
       do_symlinkat+0x1b1/0x3f0
       __x64_sys_symlink+0x7a/0x90
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
       lock_acquire+0x120/0x360
       down_read+0x46/0x2e0
       ocfs2_start_trans+0x36a/0x6d0
       ocfs2_reserve_suballoc_bits+0x711/0x4640
       ocfs2_reserve_new_metadata_blocks+0x403/0x940
       ocfs2_extend_dir+0xc76/0x4870
       ocfs2_prepare_dir_for_insert+0x2fe8/0x5450
       ocfs2_symlink+0xaa4/0x23e0
       vfs_symlink+0x143/0x2f0
       do_symlinkat+0x1b1/0x3f0
       __x64_sys_symlink+0x7a/0x90
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (sb_internal#3){.+.+}-{0:0}:
       lock_acquire+0x120/0x360
       ocfs2_start_trans+0x26b/0x6d0
       ocfs2_truncate_file+0x643/0x1420
       ocfs2_setattr+0x1520/0x1b40
       notify_change+0xb36/0xe40
       do_truncate+0x1a4/0x220
       coredump_file+0x7cb/0xaf0
       vfs_coredump+0x16b1/0x2ab0
       get_signal+0x1109/0x1340
       arch_do_signal_or_restart+0x9a/0x750
       exit_to_user_mode_loop+0x75/0x110
       do_syscall_64+0x2bd/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}:
       validate_chain+0xb9b/0x2140
       __lock_acquire+0xab9/0xd20
       lock_acquire+0x120/0x360
       down_write+0x96/0x1f0
       ocfs2_try_remove_refcount_tree+0xb6/0x320
       ocfs2_truncate_file+0xda0/0x1420
       ocfs2_setattr+0x1520/0x1b40
       notify_change+0xb36/0xe40
       do_truncate+0x1a4/0x220
       coredump_file+0x7cb/0xaf0
       vfs_coredump+0x16b1/0x2ab0
       get_signal+0x1109/0x1340
       arch_do_signal_or_restart+0x9a/0x750
       exit_to_user_mode_loop+0x75/0x110
       do_syscall_64+0x2bd/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_file_ip_alloc_sem_key --> jbd2_handle --> &oi->ip_xattr_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_xattr_sem);
                               lock(jbd2_handle);
                               lock(&oi->ip_xattr_sem);
  lock(&ocfs2_file_ip_alloc_sem_key);

 *** DEADLOCK ***

2 locks held by syz.8.1629/17790:
 #0: ffff88802b0c26c0 (&sb->s_type->i_mutex_key#24){++++}-{4:4}, at: do_truncate+0x171/0x220
 #1: ffff88802b0c23f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x320

stack backtrace:
CPU: 0 UID: 0 PID: 17790 Comm: syz.8.1629 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_circular_bug+0x2ee/0x310
 check_noncircular+0x134/0x160
 validate_chain+0xb9b/0x2140
 __lock_acquire+0xab9/0xd20
 lock_acquire+0x120/0x360
 down_write+0x96/0x1f0
 ocfs2_try_remove_refcount_tree+0xb6/0x320
 ocfs2_truncate_file+0xda0/0x1420
 ocfs2_setattr+0x1520/0x1b40
 notify_change+0xb36/0xe40
 do_truncate+0x1a4/0x220
 coredump_file+0x7cb/0xaf0
 vfs_coredump+0x16b1/0x2ab0
 get_signal+0x1109/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff82484f920
Code: 48 c1 e8 12 83 e0 01 88 15 d2 5d e9 00 88 05 cf 5d e9 00 c3 50 48 8d 35 01 25 1c 00 48 8d 3d 07 25 1c 00 31 c0 e8 20 f7 ff ff <53> 89 fb 48 83 ec 10 64 8b 04 25 94 ff ff ff 85 c0 74 2a 89 fe 31
RSP: 002b:00007ff8258c8c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007ff824bb5fa8 RCX: 00007ff82498ebe9
RDX: 00007ff8258c8c80 RSI: 00007ff8258c8db0 RDI: 000000000000000b
RBP: 00007ff824bb5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff824bb6038 R14: 00007ffce6b2f720 R15: 00007ffce6b2f808
 </TASK>
