(syz-executor,4181,0):__ocfs2_flush_truncate_log:6056 ERROR: status = -12
(syz-executor,4181,0):ocfs2_truncate_log_shutdown:6321 ERROR: status = -12
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz-executor/4181 is trying to acquire lock:
ffff88805d70a990 (jbd2_handle){++++}-{0:0}, at: jbd2_journal_lock_updates+0x85/0x380 fs/jbd2/transaction.c:881

but task is already holding lock:
ffff88805d70a990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1312/0x15a0 fs/jbd2/transaction.c:462

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(jbd2_handle);
  lock(jbd2_handle);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz-executor/4181:
 #0: ffff88801f95e0e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365
 #1: ffff88801f95e650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_replay_truncate_records fs/ocfs2/alloc.c:5939 [inline]
 #1: ffff88801f95e650 (sb_internal#2){.+.+}-{0:0}, at: __ocfs2_flush_truncate_log+0x46a/0x1060 fs/ocfs2/alloc.c:6053
 #2: ffff88805deb74e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x368/0x6c0 fs/ocfs2/journal.c:374
 #3: ffff88805d70a990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1312/0x15a0 fs/jbd2/transaction.c:462

stack backtrace:
CPU: 0 PID: 4181 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 __lock_acquire+0x1227/0x7c60 kernel/locking/lockdep.c:-1
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 jbd2_journal_lock_updates+0xa1/0x380 fs/jbd2/transaction.c:881
 ocfs2_journal_shutdown+0x3f8/0xac0 fs/ocfs2/journal.c:1042
 ocfs2_dismount_volume+0x1f6/0x880 fs/ocfs2/super.c:1892
 generic_shutdown_super+0x130/0x300 fs/super.c:475
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1148
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8df2e82a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff92a09be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f8df2f05d7d RCX: 00007f8df2e82a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff92a09ca0
RBP: 00007fff92a09ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff92a0ad30
R13: 00007f8df2f05d7d R14: 00000000000110e9 R15: 00007fff92a0ad70
 </TASK>