igt@kms_fbcon_fbt@psr-suspend - incomplete - pstore logs - is trying to acquire lock at: down_trylock, but task is already holding lock at: raw_spin_rq_lock_nested

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_6999/shard-iclb4/igt@kms_fbcon_fbt@psr-suspend.html https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_6999/shard-iclb4/pstore21-1650920458_Panic_1.txt

<0>[  336.452907] Kernel panic - not syncing: EXT4-fs (device sda2): panic forced after error
<4>[  336.453296] ------------[ cut here ]------------
<4>[  336.453318] 
<4>[  336.453319] ======================================================
<4>[  336.453320] WARNING: possible circular locking dependency detected
<4>[  336.453322] 5.18.0-rc4-CI_DRM_11550-g56b089ae03ef+ #1 Not tainted
<4>[  336.453325] ------------------------------------------------------
<4>[  336.453326] kworker/5:1H/103 is trying to acquire lock:
<4>[  336.453328] ffffffff82734458 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0xa/0x30
<4>[  336.453342] 
<4>[  336.453342] but task is already holding lock:
<4>[  336.453343] ffff88849fdbb798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x1b/0x30
<4>[  336.453353] 
<4>[  336.453353] which lock already depends on the new lock.
<4>[  336.453353] 
<4>[  336.453354] 
<4>[  336.453354] the existing dependency chain (in reverse order) is:
<4>[  336.453355] 
<4>[  336.453355] -> #2 (&rq->__lock){-.-.}-{2:2}:
<4>[  336.453360]        _raw_spin_lock_nested+0x2d/0x40
<4>[  336.453365]        raw_spin_rq_lock_nested+0x1b/0x30
<4>[  336.453370]        task_fork_fair+0x43/0x170
<4>[  336.453375]        sched_cgroup_fork+0xec/0x130
<4>[  336.453378]        copy_process+0x127b/0x1c80
<4>[  336.453382]        kernel_clone+0x98/0x730
<4>[  336.453386]        kernel_thread+0x50/0x70
<4>[  336.453390]        rest_init+0x1d/0x260
<4>[  336.453395]        start_kernel+0x66b/0x692
<4>[  336.453400]        secondary_startup_64_no_verify+0xc3/0xcb
<4>[  336.453405] 
<4>[  336.453405] -> #1 (&p->pi_lock){-.-.}-{2:2}:
<4>[  336.453409]        _raw_spin_lock_irqsave+0x33/0x50
<4>[  336.453413]        try_to_wake_up+0x6b/0x830
<4>[  336.453419]        up+0x3b/0x50
<4>[  336.453422]        __up_console_sem+0x58/0x70
<4>[  336.453427]        console_unlock+0x370/0x590
<4>[  336.453432]        do_con_write+0x63f/0xa00
<4>[  336.453436]        con_write+0xa/0x20
<4>[  336.453440]        do_output_char+0x115/0x1e0
<4>[  336.453445]        n_tty_write+0x20e/0x510
<4>[  336.453450]        file_tty_write.isra.27+0x14c/0x340
<4>[  336.453454]        do_iter_readv_writev+0x130/0x190
<4>[  336.453460]        do_iter_write+0x6c/0x190
<4>[  336.453465]        vfs_writev+0x97/0x290
<4>[  336.453470]        do_writev+0x63/0x100
<4>[  336.453474]        do_syscall_64+0x37/0x80
<4>[  336.453478]        entry_SYSCALL_64_after_hwframe+0x44/0xae
<4>[  336.453483] 
<4>[  336.453483] -> #0 ((console_sem).lock){-.-.}-{2:2}:
<4>[  336.453487]        __lock_acquire+0x15ad/0x2940
<4>[  336.453492]        lock_acquire+0xd3/0x310
<4>[  336.453497]        _raw_spin_lock_irqsave+0x33/0x50
<4>[  336.453500]        down_trylock+0xa/0x30
<4>[  336.453504]        __down_trylock_console_sem+0x25/0xa0
<4>[  336.453509]        console_trylock+0xe/0x60
<4>[  336.453513]        vprintk_emit+0x133/0x370
<4>[  336.453518]        _printk+0x53/0x6a
<4>[  336.453523]        __warn_printk+0x41/0x82
<4>[  336.453528]        native_smp_send_reschedule+0x2f/0x40
<4>[  336.453533]        check_preempt_curr+0x44/0x90
<4>[  336.453538]        ttwu_do_wakeup+0x14/0x230
<4>[  336.453543]        try_to_wake_up+0x257/0x830
<4>[  336.453548]        wake_bit_function+0x2e/0x60
<4>[  336.453553]        __wake_up_common+0x81/0x1a0
<4>[  336.453559]        __wake_up_common_lock+0x75/0xb0
<4>[  336.453564]        __wake_up_bit+0x4e/0x70
<4>[  336.453568]        end_buffer_write_sync+0x1b/0x40
<4>[  336.453573]        end_bio_bh_io_sync+0x1e/0x40
<4>[  336.453577]        blk_update_request+0x10d/0x4b0
<4>[  336.453583]        blk_mq_end_request+0x15/0x100
<4>[  336.453587]        blk_flush_complete_seq+0xde/0x320
<4>[  336.453591]        mq_flush_data_end_io+0x7d/0xf0
<4>[  336.453594]        blk_mq_dispatch_rq_list+0x62f/0x8e0
<4>[  336.453599]        __blk_mq_sched_dispatch_requests+0xad/0x130
<4>[  336.453603]        blk_mq_sched_dispatch_requests+0x2e/0x60
<4>[  336.453606]        __blk_mq_run_hw_queue+0x6b/0x1c0
<4>[  336.453611]        __blk_mq_delay_run_hw_queue+0x18b/0x1d0
<4>[  336.453616]        blk_mq_run_hw_queues+0x76/0xf0
<4>[  336.453620]        blk_mq_requeue_work+0x14b/0x170
<4>[  336.453625]        process_one_work+0x272/0x5c0
<4>[  336.453629]        worker_thread+0x37/0x370
<4>[  336.453633]        kthread+0xed/0x120
<4>[  336.453636]        ret_from_fork+0x1f/0x30
<4>[  336.453639] 
<4>[  336.453639] other info that might help us debug this:
<4>[  336.453639] 
<4>[  336.453640] Chain exists of:
<4>[  336.453640]   (console_sem).lock --> &p->pi_lock --> &rq->__lock
<4>[  336.453640] 
<4>[  336.453645]  Possible unsafe locking scenario:
<4>[  336.453645] 
<4>[  336.453646]        CPU0                    CPU1
<4>[  336.453647]        ----                    ----
<4>[  336.453648]   lock(&rq->__lock);
<4>[  336.453650]                                lock(&p->pi_lock);
<4>[  336.453653]                                lock(&rq->__lock);
<4>[  336.453655]   lock((console_sem).lock);
<4>[  336.453657] 
<4>[  336.453657]  *** DEADLOCK ***`