[PATCH v3 0/2] Ensure that a request queue is dissociated from the cgroup controller

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Hello Jens,

Several block drivers call alloc_disk() followed by put_disk() if
something fails before device_add_disk() is called without calling
blk_cleanup_queue(). Make sure that also for this scenario a request
queue is dissociated from the cgroup controller. This patch avoids
that loading the parport_pc, paride and pf drivers trigger a kernel
crash. Please consider these patches for the upstream kernel.

Thanks,

Bart.

Changes between v2 and v3:
- Avoid code duplication by introducing a new helper function.

Changes between v1 and v2:
- Fixed the build for CONFIG_BLK_CGROUP=n.

Bart Van Assche (2):
  block: Introduce blk_exit_queue()
  block: Ensure that a request queue is dissociated from the cgroup
    controller

 block/blk-core.c  | 54 ++++++++++++++++++++++++++++++------------------------
 block/blk-sysfs.c | 25 +++++++++++++++++++++++++
 block/blk.h       |  1 +
 3 files changed, 56 insertions(+), 24 deletions(-)

-- 
2.16.3




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