JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,8) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.8.2968/17539 is trying to acquire lock:
ffff8881ab9523f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_calc_xattr_init+0x20a/0xd90

but task is already holding lock:
ffff8881ab97d240 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x170/0x4960

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_evict_inode+0x1534/0x4440
       evict+0x624/0xb50
       vfs_rmdir+0x413/0x6a0
       filename_rmdir+0x292/0x520
       __se_sys_unlinkat+0x71/0x1a0
       do_syscall_64+0x170/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_del_inode_from_orphan+0x12e/0x7b0
       ocfs2_dio_end_io+0x543/0x1210
       dio_complete+0x251/0x790
       __blockdev_direct_IO+0x2cbc/0x3310
       ocfs2_direct_IO+0x249/0x2c0
       generic_file_direct_write+0x1d0/0x3f0
       __generic_file_write_iter+0x11d/0x230
       ocfs2_file_write_iter+0x1706/0x1f70
       iter_file_splice_write+0xa31/0x1240
       direct_splice_actor+0x101/0x160
       splice_direct_to_actor+0x57b/0xcb0
       do_splice_direct+0x195/0x290
       do_sendfile+0x52e/0x7c0
       __se_sys_sendfile64+0x144/0x1a0
       do_syscall_64+0x170/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&oi->ip_alloc_sem){++++}-{4:4}:
       down_write+0x96/0x200
       ocfs2_try_remove_refcount_tree+0xb6/0x360
       ocfs2_truncate_file+0xe9c/0x1600
       ocfs2_setattr+0x1641/0x1d40
       notify_change+0xbba/0xea0
       do_truncate+0x1c2/0x250
       path_openat+0x2fbd/0x3890
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0x170/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&oi->ip_xattr_sem){++++}-{4:4}:
       __lock_acquire+0x1520/0x2cd0
       lock_acquire+0xf0/0x2e0
       down_read+0x47/0x2e0
       ocfs2_calc_xattr_init+0x20a/0xd90
       ocfs2_mknod+0xf48/0x2270
       ocfs2_create+0x195/0x490
       path_openat+0x17ba/0x3890
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0x170/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

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

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);
                               lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
                               lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);
  rlock(&oi->ip_xattr_sem);

 *** DEADLOCK ***

3 locks held by syz.8.2968/17539:
 #0: ffff8881774f2420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881ab9526c0 (&type->i_mutex_dir_key#19){++++}-{4:4}, at: path_openat+0xb5a/0x3890
 #2: ffff8881ab97d240 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x170/0x4960

stack backtrace:
CPU: 1 UID: 0 PID: 17539 Comm: syz.8.2968 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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+0x1520/0x2cd0
 lock_acquire+0xf0/0x2e0
 down_read+0x47/0x2e0
 ocfs2_calc_xattr_init+0x20a/0xd90
 ocfs2_mknod+0xf48/0x2270
 ocfs2_create+0x195/0x490
 path_openat+0x17ba/0x3890
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x170/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b1bf9e019
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:00007f0b1cebc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0b1c225fa0 RCX: 00007f0b1bf9e019
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f0b1c03500c R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0b1c226038 R14: 00007f0b1c225fa0 R15: 00007ffe30b99da8
 </TASK>
