======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz-executor/7120 is trying to acquire lock:
ffff8881b4e3a6c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1577/0x43b0

but task is already holding lock:
ffff8881b4e3ef40 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xeba/0x43b0

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}:
       lock_acquire+0x11f/0x350
       down_write+0x96/0x200
       ocfs2_del_inode_from_orphan+0x12e/0x7a0
       ocfs2_dio_end_io+0x543/0x1210
       dio_complete+0x25b/0x790
       __blockdev_direct_IO+0x2cb0/0x32f0
       ocfs2_direct_IO+0x251/0x2c0
       generic_file_direct_write+0x1db/0x3e0
       __generic_file_write_iter+0x11d/0x230
       ocfs2_file_write_iter+0x1690/0x1e60
       iter_file_splice_write+0x9a0/0x1130
       direct_splice_actor+0x101/0x160
       splice_direct_to_actor+0x53a/0xc70
       do_splice_direct+0x195/0x290
       do_sendfile+0x535/0x7c0
       __se_sys_sendfile64+0x144/0x1a0
       do_syscall_64+0xf0/0xfa0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}:
       lock_acquire+0x11f/0x350
       down_write+0x96/0x200
       ocfs2_create_local_dquot+0x1a5/0x1af0
       ocfs2_acquire_dquot+0x826/0xb40
       dqget+0x7b1/0xf10
       __dquot_initialize+0x3ba/0xd30
       ocfs2_get_init_inode+0x147/0x1c0
       ocfs2_mknod+0x87f/0x2230
       ocfs2_create+0x1a5/0x460
       path_openat+0x14fd/0x3890
       do_filp_open+0x22d/0x490
       do_sys_openat2+0x12f/0x1d0
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xf0/0xfa0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&dquot->dq_lock){+.+.}-{4:4}:
       lock_acquire+0x11f/0x350
       __mutex_lock+0x19f/0x1300
       dqget+0x72a/0xf10
       __dquot_initialize+0x3ba/0xd30
       ocfs2_get_init_inode+0x147/0x1c0
       ocfs2_mknod+0x87f/0x2230
       ocfs2_create+0x1a5/0x460
       path_openat+0x14fd/0x3890
       do_filp_open+0x22d/0x490
       do_sys_openat2+0x12f/0x1d0
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xf0/0xfa0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       validate_chain+0xb9a/0x2130
       __lock_acquire+0xab8/0xd20
       lock_acquire+0x11f/0x350
       down_write+0x96/0x200
       ocfs2_evict_inode+0x1577/0x43b0
       evict+0x53c/0xa00
       vfs_rmdir+0x3ef/0x530
       do_rmdir+0x270/0x540
       __x64_sys_unlinkat+0xc2/0xf0
       do_syscall_64+0xf0/0xfa0
       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-executor/7120:
 #0: ffff8881bb78a420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88801dc689c0 (&type->i_mutex_dir_key#19/1){+.+.}-{4:4}, at: do_rmdir+0x1c5/0x540
 #2: ffff8881135b8bd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0x106/0x270
 #3: ffff8881b4e3ef40 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xeba/0x43b0

stack backtrace:
CPU: 1 UID: 0 PID: 7120 Comm: syz-executor 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+0x1a9/0x280
 print_circular_bug+0x2ed/0x300
 check_noncircular+0x134/0x160
 validate_chain+0xb9a/0x2130
 __lock_acquire+0xab8/0xd20
 lock_acquire+0x11f/0x350
 down_write+0x96/0x200
 ocfs2_evict_inode+0x1577/0x43b0
 evict+0x53c/0xa00
 vfs_rmdir+0x3ef/0x530
 do_rmdir+0x270/0x540
 __x64_sys_unlinkat+0xc2/0xf0
 do_syscall_64+0xf0/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f14a8599dd7
Code: 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 07 01 00 00 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:00007ffed9190668 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f14a8599dd7
RDX: 0000000000000200 RSI: 00007ffed9191810 RDI: 00000000ffffff9c
RBP: 00007f14a860471f R08: 0000000000008560 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffed9191810
R13: 00007f14a860471f R14: 0000000000022472 R15: 00007ffed91939d0
 </TASK>
ocfs2: Unmounting device (7,5) on (node local)
