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<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">Recentry, we got many NULL pointer access error reports.<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">It always shows the same error from xf86-video-armsoc driver.<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">Could you please assign xf86-video-armsoc engineer, and check the following error case with highest priority?<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">< armsoc_dumb.c ><o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">void mali_bo_clear_dmabuf(struct mali_bo *bo)<br>
{<br>
assert(bo->refcnt > 0);<br>
assert(mali_bo_has_dmabuf(bo));<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D"> close(bo->dmabuf);<br>
bo->dmabuf = -1;<br>
}<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">close -> ... -> filp_close -> locks_remove_posix -> filp->f_path.dentry ==> kernel oops because it is NULL<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">Please check if you have any previous history like this, and let us know which approach will be better to debug it.<o:p></o:p></span></p>
<p class="MsoNoSpacing"><span lang="EN-US" style="font-family:"Calibri","sans-serif";color:#1F497D">It is reproduced very rarely (once or twice in a day), so your quick response will be very helpful to get more detail debug information.<o:p></o:p></span></p>
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