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vinput: Fix multiple issue #258

Merged
merged 3 commits into from
May 14, 2024
Merged

vinput: Fix multiple issue #258

merged 3 commits into from
May 14, 2024

Commits on May 8, 2024

  1. vinput: Remove redundant memset call 

    Remove redundant memset calls as memory allocated with kzalloc is
already zeroed due to the presence of the __GFP_ZERO gfp flag.
    @visitorckw
    visitorckw committed May 8, 2024
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  2. vinput: Fix NULL pointer dereference caused by failed kzalloc allocation 

    When kzalloc fails to allocate memory and returns NULL, it leads to a
NULL pointer dereference error later on. Add a check for the return
value of kzalloc. When kzalloc fails to allocate memory, it prints an
error message and returns ERR_PTR(-ENOMEM).
    @visitorckw
    visitorckw committed May 8, 2024
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  3. vinput: Fix incorrect handling on raw_copy_to_user() failure 

    When raw_copy_to_user() failed in vinput_read(), the function would set
'count' to -EFAULT and then subtract EFAULT from '*offset'. However,
modifying '*offset' on raw_copy_to_user() failure was incorrect. Fix
this behavior by changing count = -EFAULT to return -EFAULT.
    @visitorckw
    visitorckw committed May 8, 2024
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