From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org, Yi Zhang <yi.zhang@redhat.com>
Subject: Re: [PATCH 0/4] block: fix race between adding wbt and normal IO
Date: Fri, 4 Jun 2021 08:03:21 +0800 [thread overview]
Message-ID: <YLltyRYCpidJBas1@T590> (raw)
In-Reply-To: <20210525080442.1896417-1-ming.lei@redhat.com>
On Tue, May 25, 2021 at 04:04:38PM +0800, Ming Lei wrote:
> Hello,
>
> Yi reported several kernel panics on:
>
> [16687.001777] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
> ...
> [16687.163549] pc : __rq_qos_track+0x38/0x60
>
> or
>
> [ 997.690455] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020
> ...
> [ 997.850347] pc : __rq_qos_done+0x2c/0x50
>
> Turns out it is caused by race between adding wbt and normal IO.
>
> Fix the issue by moving wbt allocation/addition into blk_alloc_queue().
Hello Guys,
Ping...
Thanks,
Ming
prev parent reply other threads:[~2021-06-04 0:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 8:04 [PATCH 0/4] block: fix race between adding wbt and normal IO Ming Lei
2021-05-25 8:04 ` [PATCH 1/4] block: split wbt_init() into two parts Ming Lei
2021-06-04 0:32 ` Bart Van Assche
2021-05-25 8:04 ` [PATCH 2/4] block: move wbt allocation into blk_alloc_queue Ming Lei
2021-06-04 0:44 ` Bart Van Assche
2021-06-04 1:22 ` Ming Lei
2021-05-25 8:04 ` [PATCH 3/4] block: reuse wbt_set_min_lat for setting wbt->min_lat_nsec Ming Lei
2021-05-25 8:04 ` [PATCH 4/4] block: mark queue init done at the end of blk_register_queue Ming Lei
2021-06-04 0:03 ` Ming Lei [this message]
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