======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.7.460/9854 is trying to acquire lock:
ffff88802ae25d60 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xb6/0x320

but task is already holding lock:
ffff88802ae25df8 (&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_create+0x1a5/0x440
       path_openat+0x14f4/0x3830
       do_filp_open+0x1fa/0x410
       do_sys_openat2+0x121/0x1c0
       __x64_sys_open+0x11e/0x150
       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_modify_bh+0xe8/0x470
       ocfs2_local_read_info+0x1465/0x17e0
       dquot_load_quota_sb+0x791/0xbd0
       dquot_load_quota_inode+0x2e1/0x5d0
       ocfs2_enable_quotas+0x1c6/0x450
       ocfs2_fill_super+0x50fe/0x63c0
       get_tree_bdev_flags+0x40e/0x4d0
       vfs_get_tree+0x92/0x2b0
       do_new_mount+0x2a2/0x9e0
       __se_sys_mount+0x317/0x410
       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_modify_bh+0xe8/0x470
       ocfs2_local_read_info+0x1465/0x17e0
       dquot_load_quota_sb+0x791/0xbd0
       dquot_load_quota_inode+0x2e1/0x5d0
       ocfs2_enable_quotas+0x1c6/0x450
       ocfs2_fill_super+0x50fe/0x63c0
       get_tree_bdev_flags+0x40e/0x4d0
       vfs_get_tree+0x92/0x2b0
       do_new_mount+0x2a2/0x9e0
       __se_sys_mount+0x317/0x410
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (sb_internal#4){.+.+}-{0:0}:
       lock_acquire+0x120/0x360
       ocfs2_start_trans+0x26b/0x6d0
       ocfs2_write_begin_nolock+0x1ca6/0x4340
       ocfs2_write_begin+0x1bb/0x310
       generic_perform_write+0x2c5/0x900
       ocfs2_file_write_iter+0x157a/0x1d10
       vfs_write+0x5c9/0xb30
       ksys_write+0x145/0x250
       do_syscall_64+0xfa/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_add_inode_to_orphan+0x56b/0x710
       ocfs2_dio_wr_get_block+0x7ea/0x1770
       __blockdev_direct_IO+0x16ff/0x3490
       ocfs2_direct_IO+0x25f/0x2d0
       generic_file_direct_write+0x1db/0x3e0
       __generic_file_write_iter+0x11d/0x230
       ocfs2_file_write_iter+0x157a/0x1d10
       do_iter_readv_writev+0x61c/0x8b0
       vfs_writev+0x31a/0x960
       __se_sys_pwritev2+0x179/0x290
       do_syscall_64+0xfa/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 ***

3 locks held by syz.7.460/9854:
 #0: ffff888106dba428 (sb_writers#20){.+.+}-{0:0}, at: vfs_writev+0x288/0x960
 #1: ffff88802ae260c0 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x429/0x1d10
 #2: ffff88802ae25df8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x320

stack backtrace:
CPU: 1 UID: 0 PID: 9854 Comm: syz.7.460 Not tainted syzkaller #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_add_inode_to_orphan+0x56b/0x710
 ocfs2_dio_wr_get_block+0x7ea/0x1770
 __blockdev_direct_IO+0x16ff/0x3490
 ocfs2_direct_IO+0x25f/0x2d0
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 ocfs2_file_write_iter+0x157a/0x1d10
 do_iter_readv_writev+0x61c/0x8b0
 vfs_writev+0x31a/0x960
 __se_sys_pwritev2+0x179/0x290
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea71b8ec29
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:00007fea6fdf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fea71dd6090 RCX: 00007fea71b8ec29
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006
RBP: 00007fea71c11e41 R08: 0000000000003000 R09: 0000000000000003
R10: 0000000000007c00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fea71dd6128 R14: 00007fea71dd6090 R15: 00007ffc1b0fddb8
 </TASK>
OCFS2: ERROR (device loop7): int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *, handle_t *, u32, u32, struct ocfs2_suballoc_result *): Chain allocator dinode 71 has 16777215 used bits but only 1024 total
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
(syz.7.460,9854,1):ocfs2_claim_suballoc_bits:2063 ERROR: status = -30
(syz.7.460,9854,1):__ocfs2_claim_clusters:2438 ERROR: status = -30
(syz.7.460,9854,1):__ocfs2_claim_clusters:2446 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_local_alloc_new_window:1199 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_local_alloc_new_window:1224 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_local_alloc_slide_window:1298 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_local_alloc_slide_window:1317 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_reserve_local_alloc_bits:672 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_reserve_local_alloc_bits:710 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_reserve_clusters_with_limit:1172 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_reserve_clusters_with_limit:1221 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_lock_allocators:2775 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_write_begin_nolock:1723 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_dio_wr_get_block:2218 ERROR: status = -30
(syz.7.460,9854,1):ocfs2_dio_end_io:2401 ERROR: Direct IO failed, bytes = -30
