overlayfs: upper fs does not support tmpfile.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.4.328/7758 is trying to acquire lock:
ffff8881bcb8a6c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1507/0x4040

but task is already holding lock:
ffff8881bc8ca6c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf6c/0x4040

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x1f0
       ocfs2_del_inode_from_orphan+0x134/0x740
       ocfs2_dio_end_io+0x479/0x10f0
       dio_complete+0x25b/0x790
       __blockdev_direct_IO+0x2e63/0x3490
       ocfs2_direct_IO+0x25f/0x2d0
       generic_file_direct_write+0x1db/0x3e0
       __generic_file_write_iter+0x11d/0x230
       ocfs2_file_write_iter+0x1582/0x1cf0
       do_iter_readv_writev+0x623/0x8c0
       vfs_writev+0x31a/0x960
       __se_sys_pwritev2+0x179/0x290
       do_syscall_64+0xec/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}:
       down_write+0x96/0x1f0
       ocfs2_create_local_dquot+0x19d/0x1a40
       ocfs2_acquire_dquot+0x7ff/0xb10
       dqget+0x7b1/0xf10
       __dquot_initialize+0x3b3/0xcb0
       ocfs2_get_init_inode+0x13b/0x1b0
       ocfs2_mknod+0x858/0x2030
       ocfs2_mkdir+0x181/0x420
       vfs_mkdir+0x512/0x5b0
       do_mkdirat+0x276/0x4b0
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xec/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&dquot->dq_lock){+.+.}-{4:4}:
       __mutex_lock+0x187/0x1350
       dqget+0x72a/0xf10
       __dquot_initialize+0x3b3/0xcb0
       ocfs2_get_init_inode+0x13b/0x1b0
       ocfs2_mknod+0x858/0x2030
       ocfs2_mkdir+0x181/0x420
       vfs_mkdir+0x512/0x5b0
       do_mkdirat+0x276/0x4b0
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xec/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       __lock_acquire+0x15a6/0x2cf0
       lock_acquire+0x107/0x340
       down_write+0x96/0x1f0
       ocfs2_evict_inode+0x1507/0x4040
       evict+0x5f4/0xae0
       ocfs2_dentry_iput+0x247/0x370
       __dentry_kill+0x209/0x660
       finish_dput+0xc9/0x480
       ovl_fill_super+0x4644/0x5a90
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x302/0xa10
       __se_sys_mount+0x313/0x410
       do_syscall_64+0xec/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
                               lock(&ocfs2_quota_ip_alloc_sem_key);
                               lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
  lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);

 *** DEADLOCK ***

4 locks held by syz.4.328/7758:
 #0: ffff8881a70400e0 (&type->s_umount_key#48/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xaa0
 #1: ffff8881bef7c420 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #2: ffff888169be8bd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0x106/0x250
 #3: ffff8881bc8ca6c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf6c/0x4040

stack backtrace:
CPU: 1 UID: 0 PID: 7758 Comm: syz.4.328 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+0x2e2/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a6/0x2cf0
 lock_acquire+0x107/0x340
 down_write+0x96/0x1f0
 ocfs2_evict_inode+0x1507/0x4040
 evict+0x5f4/0xae0
 ocfs2_dentry_iput+0x247/0x370
 __dentry_kill+0x209/0x660
 finish_dput+0xc9/0x480
 ovl_fill_super+0x4644/0x5a90
 get_tree_nodev+0xbb/0x150
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x302/0xa10
 __se_sys_mount+0x313/0x410
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8be8b8f7c9
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:00007f8be9a61038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f8be8de5fa0 RCX: 00007f8be8b8f7c9
RDX: 0000200000000b80 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f8be8bf297f R08: 0000200000000200 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8be8de6038 R14: 00007f8be8de5fa0 R15: 00007ffce7642988
 </TASK>
overlayfs: upper fs does not support RENAME_WHITEOUT.
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.
