======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.2.265/7374 is trying to acquire lock:
ffff88810b2c8610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_setattr+0x9a4/0x1bb0

but task is already holding lock:
ffff888024014ee0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x995/0x1bb0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}:
       down_write+0x96/0x1f0
       ocfs2_try_remove_refcount_tree+0xb6/0x320
       ocfs2_xattr_set+0x595/0x11f0
       ocfs2_set_acl+0x701/0x7b0
       ocfs2_iop_set_acl+0x1aa/0x2a0
       vfs_remove_acl+0x482/0x6f0
       ovl_workdir_create+0x57d/0x900
       ovl_fill_super+0x188f/0x5a90
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x302/0xa10
       __se_sys_mount+0x313/0x410
       do_syscall_64+0xfa/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x47/0x2e0
       ocfs2_init_acl+0x2f7/0x7a0
       ocfs2_mknod+0x12ff/0x2030
       ocfs2_create+0x195/0x420
       path_openat+0x18bb/0x3dd0
       do_filp_open+0x1fa/0x410
       do_sys_openat2+0x121/0x200
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xfa/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x47/0x2e0
       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+0x50dd/0x63a0
       get_tree_bdev_flags+0x40e/0x4d0
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x302/0xa10
       __se_sys_mount+0x313/0x410
       do_syscall_64+0xfa/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (sb_internal#5){.+.+}-{0:0}:
       __lock_acquire+0x15a6/0x2cf0
       lock_acquire+0x117/0x340
       ocfs2_start_trans+0x26b/0x6d0
       ocfs2_setattr+0x9a4/0x1bb0
       notify_change+0xc1a/0xf40
       ovl_workdir_create+0x717/0x900
       ovl_fill_super+0x188f/0x5a90
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x302/0xa10
       __se_sys_mount+0x313/0x410
       do_syscall_64+0xfa/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  sb_internal#5 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_file_ip_alloc_sem_key);
                               lock(&oi->ip_xattr_sem);
                               lock(&ocfs2_file_ip_alloc_sem_key);
  rlock(sb_internal#5);

 *** DEADLOCK ***

4 locks held by syz.2.265/7374:
 #0: ffff8881b2abe0e0 (&type->s_umount_key#79/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xaa0
 #1: ffff88810b2c8420 (sb_writers#29){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #2: ffff888024015240 (&sb->s_type->i_mutex_key#40){+.+.}-{4:4}, at: ovl_workdir_create+0x6a1/0x900
 #3: ffff888024014ee0 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x995/0x1bb0

stack backtrace:
CPU: 1 UID: 0 PID: 7374 Comm: syz.2.265 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+0x2e2/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a6/0x2cf0
 lock_acquire+0x117/0x340
 ocfs2_start_trans+0x26b/0x6d0
 ocfs2_setattr+0x9a4/0x1bb0
 notify_change+0xc1a/0xf40
 ovl_workdir_create+0x717/0x900
 ovl_fill_super+0x188f/0x5a90
 get_tree_nodev+0xbb/0x150
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x302/0xa10
 __se_sys_mount+0x313/0x410
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa7338f7c9
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:00007ffa742f7038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffa735e5fa0 RCX: 00007ffa7338f7c9
RDX: 0000200000000080 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007ffa733f297f R08: 00002000000001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffa735e6038 R14: 00007ffa735e5fa0 R15: 00007ffcf7e69528
 </TASK>
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
OCFS2: ERROR (device loop2): 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.
OCFS2: File system is now read-only.
(syz.2.265,7374,1):ocfs2_claim_suballoc_bits:2074 ERROR: status = -30
(syz.2.265,7374,1):__ocfs2_claim_clusters:2449 ERROR: status = -30
(syz.2.265,7374,1):__ocfs2_claim_clusters:2457 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_block_group_alloc_contig:438 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_block_group_alloc:712 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_block_group_alloc:765 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_reserve_suballoc_bits:840 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_reserve_suballoc_bits:857 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_reserve_new_metadata_blocks:997 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_reserve_new_metadata_blocks:1020 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_init_xattr_set_ctxt:3310 ERROR: status = -30
(syz.2.265,7374,1):ocfs2_xattr_set:3667 ERROR: status = -30
overlayfs: failed to set xattr on upper
overlayfs: ...falling back to redirect_dir=nofollow.
overlayfs: ...falling back to index=off.
overlayfs: ...falling back to uuid=null.
overlayfs: upper fs missing required features.
