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Change History

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dpu: Add mutex lock in control vblank irq

Add a mutex lock to control vblank irq to synchronize vblank
enable/disable operations happening from different threads to prevent
race conditions while registering/unregistering the vblank irq callback.

v4: -Removed vblank_ctl_lock from dpu_encoder_virt, so it is only a
    parameter of dpu_encoder_phys.
    -Switch from atomic refcnt to a simple int counter as mutex has
    

Linux https://git.kernel.org/stable/c/14f109bf74dd67e1d0469fed859c8e506b0df53f [No types assigned]

Linux https://git.kernel.org/stable/c/45284ff733e4caf6c118aae5131eb7e7cf3eea5a [No types assigned]