Re: BUG: unable to handle kernel NULL pointer dereference in bio_associate_blkg_from_css

From: Christoph Hellwig
Date: Sun Oct 30 2022 - 05:57:18 EST

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In reply to: Wei Chen: "BUG: unable to handle kernel NULL pointer dereference in bio_associate_blkg_from_css"
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On Sun, Oct 30, 2022 at 05:39:59PM +0800, Wei Chen wrote:
> Dear Linux Developer,
>
> Recently when using our tool to fuzz kernel, the following crash was triggered:

This looks like jfs somehow not setting log->bdev before doing I/O.

Next message: Christoph Hellwig: "Re: [PATCH] blk-mq: move queue_is_mq out of blk_mq_cancel_work_sync"
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In reply to: Wei Chen: "BUG: unable to handle kernel NULL pointer dereference in bio_associate_blkg_from_css"
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