ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.765/9545 is trying to acquire lock:
ffff8881bb1fec78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_calc_xattr_init+0x20a/0xd90

but task is already holding lock:
ffff8881bb3209c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16a/0x4940

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+0x1539/0x44e0
       evict+0x61e/0xb10
       ocfs2_dentry_iput+0x24d/0x390
       __dentry_kill+0x209/0x660
       finish_dput+0xc9/0x480
       __fput+0x691/0xa70
       task_work_run+0x1d9/0x270
       do_exit+0x69b/0x2310
       do_group_exit+0x21b/0x2d0
       get_signal+0x1284/0x1330
       arch_do_signal_or_restart+0xbc/0x830
       exit_to_user_mode_loop+0x86/0x480
       do_syscall_64+0x32d/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/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+0x1663/0x1ed0
       do_iter_readv_writev+0x619/0x8c0
       vfs_writev+0x33c/0x990
       __se_sys_pwritev2+0x184/0x2a0
       do_syscall_64+0x14d/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&oi->ip_alloc_sem){++++}-{4:4}:
       down_write+0x96/0x200
       ocfs2_try_remove_refcount_tree+0xb6/0x340
       ocfs2_truncate_file+0xdf3/0x1540
       ocfs2_setattr+0x15e5/0x1cc0
       notify_change+0xc1a/0xf40
       do_truncate+0x1c2/0x250
       path_openat+0x2f89/0x3860
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_creat+0x8f/0xc0
       do_syscall_64+0x14d/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&oi->ip_xattr_sem){++++}-{4:4}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0xf0/0x2e0
       down_read+0x47/0x2e0
       ocfs2_calc_xattr_init+0x20a/0xd90
       ocfs2_mknod+0xf51/0x2290
       ocfs2_create+0x195/0x490
       path_openat+0x1395/0x3860
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0x14d/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.3.765/9545:
 #0: ffff8881a85c4420 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881bb1fef40 (&type->i_mutex_dir_key#11){++++}-{4:4}, at: path_openat+0xb4c/0x3860
 #2: ffff8881bb3209c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16a/0x4940

stack backtrace:
CPU: 1 UID: 0 PID: 9545 Comm: syz.3.765 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+0xf0/0x2e0
 down_read+0x47/0x2e0
 ocfs2_calc_xattr_init+0x20a/0xd90
 ocfs2_mknod+0xf51/0x2290
 ocfs2_create+0x195/0x490
 path_openat+0x1395/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa723d9acb9
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:00007fa724c08028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa724015fa0 RCX: 00007fa723d9acb9
RDX: 0000000000181242 RSI: 0000200000000180 RDI: ffffffffffffff9c
RBP: 00007fa723e08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000148 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa724016038 R14: 00007fa724015fa0 R15: 00007ffd3477f1d8
 </TASK>
OCFS2: ERROR (device loop3): int ocfs2_validate_gd_self(struct super_block *, struct buffer_head *, int): Group descriptor #1792 has bad signature 
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.3.765,9545,1):ocfs2_search_chain:1923 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_search_chain:2011 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_claim_suballoc_bits:2098 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_claim_suballoc_bits:2151 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_claim_new_inode:2392 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_claim_new_inode:2407 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_mknod_locked:642 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_mknod:389 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_mknod:506 ERROR: status = -30
(syz.3.765,9545,1):ocfs2_create:679 ERROR: status = -30
