$ gdb gears core.3121
(gdb) bt
#0  0x0000003cbcc32a4c in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x0000003cbcc33fa1 in __GI_abort () at abort.c:89
#2  0x0000003cbcc2b715 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x4625a0 "res == VK_SUCCESS", file=file@entry=0x462870 "/home/atom/apps/vulkan-demos/base/vulkanexamplebase.cpp", line=line@entry=541, 
    function=function@entry=0x4639c0 <VulkanExampleBase::prepareFrame()::__PRETTY_FUNCTION__> "void VulkanExampleBase::prepareFrame()") at assert.c:92
#3  0x0000003cbcc2b7c3 in __GI___assert_fail (assertion=0x4625a0 "res == VK_SUCCESS", file=0x462870 "/home/atom/apps/vulkan-demos/base/vulkanexamplebase.cpp", line=541, 
    function=0x4639c0 <VulkanExampleBase::prepareFrame()::__PRETTY_FUNCTION__> "void VulkanExampleBase::prepareFrame()") at assert.c:101
#4  0x0000000000442426 in VulkanExampleBase::prepareFrame() ()
#5  0x0000000000437b5b in VulkanExample::draw() ()
#6  0x0000000000437d5d in VulkanExample::render() ()
#7  0x0000000000441dee in VulkanExampleBase::renderLoop() ()
#8  0x0000000000435331 in main ()