[Bug 246964] bhyve usb_mouse SIGSEGV on null pointer dereference

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246964

Ali Abdallah <ali.abdallah at suse.com> changed:

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--- Comment #3 from Ali Abdallah <ali.abdallah at suse.com> ---
Created attachment 215213
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=215213&action=edit
Fix null pointer dereferences in usb_mouse

Fix a couple of more dereferences in usb_mouse.

Please note that running 'scan-build80 make' in /usr/src/usr.sbin/bhyve reveals
also other dereference of null pointers (no more in usb_mouse). I think those
also can be potentially triggered in some way and should be fixed.

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