Re: [PATCH v2] scsi: sg: Avoid sg device teardown race

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On Wed, Mar 20, 2024 at 12:08:09PM +0100, Alexander Wetzel wrote:
> sg_remove_sfp_usercontext() must not use sg_device_destroy() after
> calling scsi_device_put().
> 
> sg_device_destroy() is accessing the parent scsi device request_queue.
> Which will already be set to NULL when the preceding call to
> scsi_device_put() removed the last reference to the parent scsi device.
> 
> The resulting NULL pointer exception will then crash the kernel.
> 
> Link: https://lore.kernel.org/r/20240305150509.23896-1-Alexander@xxxxxxxxxxxxxx
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Alexander Wetzel <Alexander@xxxxxxxxxxxxxx>
> ---
> Changes compared to V1:
> Reworked the commit message

What commit id does this fix?

thanks,

greg k-h




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