Messages in this thread | | | Subject | Re: [PATCH] block: Avoid accessing an already freed kobject in delete_partition | From | Rajat Asthana <> | Date | Tue, 6 Jul 2021 06:31:11 +0530 |
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On 03/07/21 10:56 am, Christoph Hellwig wrote: > This should be fixed properly by: > > "block: check disk exist before trying to add partition"
Hi Christoph, thanks a lot for suggesting this fix. I have been working on implementing this and have tried the following: - I checked if the the kobject of device structure embedded in gendisk structure is not NULL, to add the partition. This didn't work.
- Then I checked the if kobject of the block_device struct (part0) embedded in the gendisk struct is not NULL, to add the partition. This also didn't work.
- Then I checked the i_state of the bd_inode field of block_device struct embedded in the gendisk struct. I checked if the I_FREEING or I_WILL_FREE fields are not set. The reason behind doing this was to confirm that we only create partition on the disks which are not being freed.
Am I going in the right direction? Can you point me to the correct direction if I am not?
thanks -- Rajat
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