JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,5) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.5.12459/25281 is trying to acquire lock:
ffff888116d741a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xbeb/0x13a0

but task is already holding lock:
ffff888116d730e8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x494/0x13a0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x4a/0x330
       ocfs2_init_acl+0x2fd/0x7e0
       ocfs2_mknod+0x166a/0x2240
       ocfs2_create+0x195/0x460
       path_openat+0x133a/0x3830
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x115/0x200
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x4a/0x330
       ocfs2_start_trans+0x3ab/0x700
       ocfs2_reserve_suballoc_bits+0x7b7/0x4850
       ocfs2_reserve_new_metadata_blocks+0x415/0x9a0
       ocfs2_extend_dir+0xd35/0x4b60
       ocfs2_prepare_dir_for_insert+0x339a/0x5190
       ocfs2_mknod+0xa16/0x2240
       vfs_mknod+0x441/0x600
       filename_mknodat+0x3cb/0x660
       __se_sys_mknod+0x3a/0x150
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (sb_internal#3){.+.+}-{0:0}:
       ocfs2_start_trans+0x2ac/0x700
       ocfs2_remove_btree_range+0x819/0x15f0
       ocfs2_commit_truncate+0xc60/0x2560
       ocfs2_evict_inode+0xf8f/0x4390
       evict+0x624/0xb50
       ocfs2_dentry_iput+0x24d/0x390
       dentry_kill+0x1b9/0x880
       finish_dput+0x1a/0x260
       filename_renameat2+0x61b/0x9a0
       __se_sys_rename+0x55/0x2c0
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}:
       __lock_acquire+0x1520/0x2cf0
       lock_acquire+0x106/0x350
       down_write+0x96/0x200
       ocfs2_xattr_set+0xbeb/0x13a0
       __vfs_setxattr+0x442/0x480
       __vfs_setxattr_noperm+0x12a/0x660
       vfs_setxattr+0x163/0x360
       file_setxattr+0x1d9/0x2b0
       path_setxattrat+0x3cc/0x450
       __x64_sys_fsetxattr+0xbc/0xe0
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_xattr_sem);
                               lock(&journal->j_trans_barrier);
                               lock(&oi->ip_xattr_sem);
  lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]);

 *** DEADLOCK ***

3 locks held by syz.5.12459/25281:
 #0: ffff8881164f8450 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x60/0x200
 #1: ffff888116d733a0 (&sb->s_type->i_mutex_key#26){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360
 #2: ffff888116d730e8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x494/0x13a0

stack backtrace:
CPU: 0 UID: 0 PID: 25281 Comm: syz.5.12459 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+0x1520/0x2cf0
 lock_acquire+0x106/0x350
 down_write+0x96/0x200
 ocfs2_xattr_set+0xbeb/0x13a0
 __vfs_setxattr+0x442/0x480
 __vfs_setxattr_noperm+0x12a/0x660
 vfs_setxattr+0x163/0x360
 file_setxattr+0x1d9/0x2b0
 path_setxattrat+0x3cc/0x450
 __x64_sys_fsetxattr+0xbc/0xe0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c1d59ce59
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:00007f2c1e451028 EFLAGS: 00000246 ORIG_RAX: 00000000000000be
RAX: ffffffffffffffda RBX: 00007f2c1d815fa0 RCX: 00007f2c1d59ce59
RDX: 0000200000000240 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f2c1d632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c1d816038 R14: 00007f2c1d815fa0 R15: 00007ffdf7718fe8
 </TASK>
