jbd2_journal_bmap: journal block not found at offset 32 on loop3-75
JBD2: bad block at offset 32
ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.3.6108/31374 is trying to acquire lock:
ffff8881b9a1bee8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x2fd/0x7e0

but task is already holding lock:
ffff88816e429ce0 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x47/0x2e0
       ocfs2_start_trans+0x3ab/0x700
       ocfs2_shutdown_local_alloc+0x1f5/0xa40
       ocfs2_dismount_volume+0x1ec/0x8d0
       generic_shutdown_super+0x13d/0x2d0
       kill_block_super+0x44/0x90
       deactivate_locked_super+0xbc/0x130
       cleanup_mnt+0x437/0x4d0
       task_work_run+0x1d9/0x270
       exit_to_user_mode_loop+0xf3/0x4d0
       do_syscall_64+0x33e/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (sb_internal#3){.+.+}-{0:0}:
       ocfs2_start_trans+0x2ac/0x700
       ocfs2_truncate_file+0x631/0x14e0
       ocfs2_setattr+0x15e5/0x1ca0
       notify_change+0xc1a/0xf40
       do_truncate+0x1c2/0x250
       path_openat+0x2f89/0x3860
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_open+0x11e/0x150
       do_syscall_64+0x15f/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+0xdf3/0x14e0
       ocfs2_setattr+0x15e5/0x1ca0
       notify_change+0xc1a/0xf40
       do_truncate+0x1c2/0x250
       path_openat+0x2f89/0x3860
       do_file_open+0x23e/0x4a0
       do_sys_openat2+0x113/0x200
       __x64_sys_open+0x11e/0x150
       do_syscall_64+0x15f/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&oi->ip_xattr_sem){++++}-{4:4}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0x106/0x350
       down_read+0x47/0x2e0
       ocfs2_init_acl+0x2fd/0x7e0
       ocfs2_mknod+0x1679/0x2260
       vfs_mknod+0x447/0x610
       unix_bind+0x548/0x1230
       __sys_bind+0x2e3/0x410
       __x64_sys_bind+0x7a/0x90
       do_syscall_64+0x15f/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &oi->ip_xattr_sem --> sb_internal#3 --> &journal->j_trans_barrier

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(&journal->j_trans_barrier);
                               lock(sb_internal#3);
                               lock(&journal->j_trans_barrier);
  rlock(&oi->ip_xattr_sem);

 *** DEADLOCK ***

8 locks held by syz.3.6108/31374:
 #0: ffff888177c4c410 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881b9a1c1a0 (&type->i_mutex_dir_key#11/1){+.+.}-{4:4}, at: filename_create+0x200/0x370
 #2: ffff8881b99f25a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4840
 #3: ffff8881b99f5da0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4840
 #4: ffff8881b99f4fa0 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4840
 #5: ffff888177c4c600 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_mknod+0x1181/0x2260
 #6: ffff88816e429ce0 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700
 #7: ffff8881aaf74938 (jbd2_handle#2){.+.+}-{0:0}, at: start_this_handle+0x2054/0x2290

stack backtrace:
CPU: 1 UID: 0 PID: 31374 Comm: syz.3.6108 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+0x15a5/0x2cf0
 lock_acquire+0x106/0x350
 down_read+0x47/0x2e0
 ocfs2_init_acl+0x2fd/0x7e0
 ocfs2_mknod+0x1679/0x2260
 vfs_mknod+0x447/0x610
 unix_bind+0x548/0x1230
 __sys_bind+0x2e3/0x410
 __x64_sys_bind+0x7a/0x90
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfe839cdd9
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:00007fdfe65f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00007fdfe8615fa0 RCX: 00007fdfe839cdd9
RDX: 000000000000006e RSI: 00002000000000c0 RDI: 000000000000000e
RBP: 00007fdfe8432d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdfe8616038 R14: 00007fdfe8615fa0 R15: 00007ffe4ac793a8
 </TASK>
