[PATCH 0/6] cdev: delete partitions when deleting master cdev

[Sascha Hauer]

On Wed, Jan 03, 2024 at 11:16:23AM +0100, Ahmad Fatoum wrote:
> blockdevice_unregister only calls devfs_remove on the root cdev and
> leaves the partition cdevs dangling. This doesn't break until the
> block device parent struct device is freed at which time, it will
> iterate over its cdevs to free them. If there's partitions there,
> list_del on the partitions triggers a use after free.
> 
> This series fixes this by removing partitions whenever the master cdev
> is deleted.
> 
> Code has been this way since for ever, but virtio deletes its devices on
> shutdown triggering this issue. As virtio isn't that critical, I think
> it's ok to not go into master right away and sit in next first.

Applied, thanks

Sascha

> 
>  common/partitions.c    | 12 +++++++----
>  drivers/base/driver.c  |  2 +-
>  drivers/of/partition.c | 16 +++++++--------
>  fs/devfs-core.c        | 45 +++++++++++++++++++++++++++---------------
>  include/driver.h       | 12 +++++++----
>  lib/bootstrap/devfs.c  |  2 +-
>  6 files changed, 55 insertions(+), 34 deletions(-)
> 
> -- 
> 2.39.2
> 
> 
> 

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