======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.1156/14911 is trying to acquire lock:
ffff88811ac88610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0xcc6/0x1c70

but task is already holding lock:
ffff888118505d60 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0xcb7/0x1c70

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&oi->ip_alloc_sem){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_try_remove_refcount_tree+0xb6/0x340
       ocfs2_xattr_set+0x61a/0x13e0
       ocfs2_set_acl+0x701/0x7b0
       ocfs2_iop_set_acl+0x1b1/0x2b0
       vfs_remove_acl+0x482/0x6f0
       ovl_workdir_create+0x5b3/0x940
       ovl_fill_super+0x1a1e/0x5e60
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x329/0xa50
       __se_sys_mount+0x31d/0x420
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x47/0x2e0
       ocfs2_init_acl+0x2fd/0x7e0
       ocfs2_mknod+0x1423/0x2210
       ocfs2_create+0x195/0x440
       path_openat+0x18dd/0x3e20
       do_filp_open+0x22d/0x490
       do_sys_openat2+0x12f/0x220
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x47/0x2e0
       ocfs2_start_trans+0x3ab/0x700
       ocfs2_mknod+0xf31/0x2210
       ocfs2_create+0x195/0x440
       path_openat+0x18dd/0x3e20
       do_filp_open+0x22d/0x490
       do_sys_openat2+0x12f/0x220
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (sb_internal#2){.+.+}-{0:0}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0x106/0x330
       ocfs2_start_trans+0x2ac/0x700
       ocfs2_setattr+0xcc6/0x1c70
       notify_change+0xc1a/0xf40
       ovl_workdir_create+0x716/0x940
       ovl_fill_super+0x1a1e/0x5e60
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x329/0xa50
       __se_sys_mount+0x31d/0x420
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_alloc_sem);
                               lock(&oi->ip_xattr_sem);
                               lock(&oi->ip_alloc_sem);
  rlock(sb_internal#2);

 *** DEADLOCK ***

4 locks held by syz.3.1156/14911:
 #0: ffff888172b240e0 (&type->s_umount_key#79/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xaa0
 #1: ffff88811ac88420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #2: ffff8881185060c0 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: ovl_workdir_create+0x6b7/0x940
 #3: ffff888118505d60 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0xcb7/0x1c70

stack backtrace:
CPU: 0 UID: 0 PID: 14911 Comm: syz.3.1156 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+0xe8/0x150
 print_circular_bug+0x2e1/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a5/0x2cf0
 lock_acquire+0x106/0x330
 ocfs2_start_trans+0x2ac/0x700
 ocfs2_setattr+0xcc6/0x1c70
 notify_change+0xc1a/0xf40
 ovl_workdir_create+0x716/0x940
 ovl_fill_super+0x1a1e/0x5e60
 get_tree_nodev+0xbb/0x150
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x329/0xa50
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faea279acb9
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:00007faea3643028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007faea2a15fa0 RCX: 00007faea279acb9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007faea2808bf7 R08: 0000200000000400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faea2a16038 R14: 00007faea2a15fa0 R15: 00007fff3ad99878
 </TASK>
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
OCFS2: ERROR (device loop3): int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *, handle_t *, u32, u32, struct ocfs2_suballoc_result *): Chain allocator dinode 23 has 4294967295 used bits but only 16777215 total
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.3.1156,14911,1):ocfs2_claim_suballoc_bits:2074 ERROR: status = -30
(syz.3.1156,14911,1):__ocfs2_claim_clusters:2449 ERROR: status = -30
(syz.3.1156,14911,1):__ocfs2_claim_clusters:2457 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_block_group_alloc_contig:438 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_block_group_alloc:712 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_block_group_alloc:765 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_reserve_suballoc_bits:840 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_reserve_suballoc_bits:857 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_reserve_new_metadata_blocks:997 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_reserve_new_metadata_blocks:1020 ERROR: status = -30
(syz.3.1156,14911,1):ocfs2_init_xattr_set_ctxt:3310 ERROR: status = -30
(syz.3.1156,14911,1):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.
