From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
YangYang <yang.yang@vivo.com>,
linux-block@vger.kernel.org
Subject: Re: [PATCH 1/2] block: also mark disk-owned queues as dying in __blk_mark_disk_dead
Date: Sun, 20 Oct 2024 00:11:44 +0900 [thread overview]
Message-ID: <20241019151144.GH1279924@google.com> (raw)
In-Reply-To: <ZxPKP8SEb7Y4ceOq@fedora>
On (24/10/19 23:03), Ming Lei wrote:
> Probably bio_queue_enter() waits for runtime PM, and the queue is in
> ->pm_only state, and BLK_MQ_REQ_PM isn't passed actually from
> ioctl_internal_command() <- scsi_set_medium_removal().
>
> And if you have vmcore collected, it shouldn't be not hard to root cause.
We don't collect those.
> Also I'd suggest to collect intact related dmesg log in future, instead of
> providing selective log, such as, there isn't even kernel version...
These "selected" backtraces are the only backtraces in the dmesg.
I literally have reports that have just two backtraces of tasks blocked
over 120 seconds, one close()->bio_queue_enter()->schedule (under
->open_mutex) and the other one del_gendisk()->mutex_lock()->schedule().
next prev parent reply other threads:[~2024-10-19 15:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-09 11:38 try to avoid del_gendisk vs passthrough from ->release deadlocks v2 Christoph Hellwig
2024-10-09 11:38 ` [PATCH 1/2] block: also mark disk-owned queues as dying in __blk_mark_disk_dead Christoph Hellwig
2024-10-09 12:31 ` Sergey Senozhatsky
2024-10-09 12:41 ` Christoph Hellwig
2024-10-09 12:43 ` Sergey Senozhatsky
2024-10-09 13:49 ` Jens Axboe
2024-10-16 4:14 ` YangYang
2024-10-16 11:09 ` Ming Lei
2024-10-16 12:32 ` Christoph Hellwig
2024-10-16 12:49 ` Ming Lei
2024-10-16 13:35 ` Ming Lei
2024-10-19 1:25 ` Sergey Senozhatsky
2024-10-19 12:32 ` Ming Lei
2024-10-19 12:37 ` Sergey Senozhatsky
2024-10-19 12:50 ` Ming Lei
2024-10-19 12:58 ` Sergey Senozhatsky
2024-10-19 13:09 ` Ming Lei
2024-10-19 13:50 ` Sergey Senozhatsky
2024-10-19 15:03 ` Ming Lei
2024-10-19 15:11 ` Sergey Senozhatsky [this message]
2024-10-19 15:40 ` Sergey Senozhatsky
2024-10-28 5:44 ` Sergey Senozhatsky
2024-10-09 11:38 ` [PATCH 2/2] block: mark the disk dead before taking open_mutx in del_gendisk Christoph Hellwig
2024-10-16 4:15 ` YangYang
2024-10-16 2:09 ` try to avoid del_gendisk vs passthrough from ->release deadlocks v2 Sergey Senozhatsky
-- strict thread matches above, loose matches on Subject: below --
2024-10-08 11:57 RFC: try to avoid del_gendisk vs passthrough from ->release deadlocks Christoph Hellwig
2024-10-08 11:57 ` [PATCH 1/2] block: also mark disk-owned queues as dying in __blk_mark_disk_dead Christoph Hellwig
2024-10-09 5:06 ` Sergey Senozhatsky
2024-10-09 7:34 ` Christoph Hellwig
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