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Ticket Resolution Summary Owner Reporter
#19772 fixed macOS Catalina 10.15.6 host crashes when executing a VM for several hours (memory leak) fth0
Description

When a VirtualBox VM (or a VMware Fusion VM) has been running on a macOS Catalina 10.15.6 host for a few hours, the host OS crashes. The crashes have already been analyzed to some degree in a VirtualBox forum thread (https://forums.virtualbox.org/viewtopic.php?f=8&t=99161) and in a VMware Fusion forum thread (https://communities.vmware.com/thread/640143). What is known so far:

  • The crashes occur only on macOS Catalina 10.15.6, not on macOS Catalina 10.15.5.
  • The VirtualBox version probably doesn't matter (e.g. 6.1.12, 6.1.10, 6.0.22).
  • In the macOS kernel memory zone named "kalloc.32", continuously allocation of memory takes place, with a rate of about 1GB per hour. This can be easily observed using sudo zprint -d. When the kernel memory is exhausted, macOS randomly terminates processes but cannot recover, eventually leading to crashes in a random process.
  • Terminating a VM doesn't free the kernel memory, so the memory usage is accumulating until the next macOS reboot.
  • A VMware Fusion developer (Darius, dariusd) has "narrowed down the problem to a regression in the com.apple.security.sandbox kext (or one of its related components)" and "filed a comprehensive report with Apple". They have no known workaround at the moment, other than not using macOS Catalina 10.15.6 or running VMs only shortly.

After reproducing the crash, I've stripped down a VM to virtually nothing (see attached Empty.vbox). This VM contains no storage controller, no graphics controller, no everything I could get rid of. Even this VM exhibits the memory allocation, while endlessly displaying at the "No bootable medium found" message, albeit at a much slower rate of 4 KB per second (still more than enough for debugging ;)).

#19769 duplicate Kernel Modules for 6.1.12 in openSUSE Leap 15.2 don't compile ichamel
Description

During installation the compilation of the kernel modules fails with these messages.

/tmp/vbox.0/linux/VBoxNetFlt-linux.c: In function ‘vboxNetFltLinuxSkBufToSG’: /tmp/vbox.0/linux/VBoxNetFlt-linux.c:931:36: error: ‘skb_frag_t {aka struct bio_vec}’ has no member named ‘size’

pSG->aSegs[iSeg].cb = pFrag->size;

~

/tmp/vbox.0/linux/VBoxNetFlt-linux.c:932:66: error: ‘skb_frag_t {aka struct bio_vec}’ has no member named ‘page_offset’; did you mean ‘bv_offset’?

pSG->aSegs[iSeg].pv = VBOX_SKB_KMAP_FRAG(pFrag) + pFrag->page_offset;

bv_offset

/tmp/vbox.0/linux/VBoxNetFlt-linux.c:952:40: error: ‘skb_frag_t {aka struct bio_vec}’ has no member named ‘size’

pSG->aSegs[iSeg].cb = pFrag->size;

~

/tmp/vbox.0/linux/VBoxNetFlt-linux.c:953:70: error: ‘skb_frag_t {aka struct bio_vec}’ has no member named ‘page_offset’; did you mean ‘bv_offset’?

pSG->aSegs[iSeg].pv = VBOX_SKB_KMAP_FRAG(pFrag) + pFrag->page_offset;

bv_offset

make[3]: * /tmp/vbox.0/linux/VBoxNetFlt-linux.o Error 1 make[2]: * _module_/tmp/vbox.0 Error 2 make[1]: * sub-make Error 2 make: * vboxnetflt Error 2

I'll try to attach the complete /var/log/vbox-setup.log.

Thanks in advance for any help... Michael Vinnemeier

#19768 invalid OK button does'nt work matematix1
Description

Hi, I have a problem. I open Settings in my VM and I change a setting and i cannot click the OK button. Regards, Jakub

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