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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvmpipe] crashes when GL context is created and a previous context was shared"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101556#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvmpipe] crashes when GL context is created and a previous context was shared"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101556">bug 101556</a>
from <span class="vcard"><a class="email" href="mailto:florianlink@gmail.com" title="Florian Link <florianlink@gmail.com>"> <span class="fn">Florian Link</span></a>
</span></b>
<pre>I reverted the commit from
<a href="https://github.com/mesa3d/mesa/commit/043883647acaee0b2c67c1c6b496404ebb4e8d67">https://github.com/mesa3d/mesa/commit/043883647acaee0b2c67c1c6b496404ebb4e8d67</a>
and then the crash is gone. The problem seems to be:
stw_context.c: line 442:
if (old_ctx->shared) {
struct pipe_fence_handle *fence = NULL;
old_ctx->st->flush(old_ctx->st,
ST_FLUSH_FRONT | ST_FLUSH_WAIT, &fence);
}
else {
old_ctx->st->flush(old_ctx->st, ST_FLUSH_FRONT, NULL);
}
if I change that back to just:
old_ctx->st->flush(old_ctx->st, ST_FLUSH_FRONT, NULL);
then the crash is gone. Since the fence pointer points to NULL and stays NULL,
the old_ctx->st->flush crashes.</pre>
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