ion: fix crash when alloc len is -1

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If userspace passes a length between -4095 and -1 to allocate it
will pass the len != 0 check, but when len is page aligned it will
be 0.  Check len after page aligning.

Drop the warning as well, userspace shouldn't be able to trigger
a warning in the kernel.

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Colin Cross 2013-12-13 14:25:00 -08:00 • committed by Greg Kroah-Hartman

parent 83271f6262

commit a14baf71b9

1 changed files with 3 additions and 3 deletions

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drivers/staging/android/ion/ion.c

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