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1. #MAC KEEPS REVERTING BACK TO SOUNDFLOWER UPDATE#
2. #MAC KEEPS REVERTING BACK TO SOUNDFLOWER PRO#
3. #MAC KEEPS REVERTING BACK TO SOUNDFLOWER SOFTWARE#
4. #MAC KEEPS REVERTING BACK TO SOUNDFLOWER PLUS#

When performing various routine tasks such as checking UPS status, at 0321 this morning it reported its first serious memory problem:Ġ3:21:09.447981+0100 kernel zone_map_exhaustion: Zone map size 12240662528, capacity 12884901888 Ġ3:21:09.448533+0100 kernel zone_map_exhaustion: Largest zone kalloc.48, size 6544393440Ġ3:21:09.449437+0100 kernel kernel zone_map_exhaustion: Nothing to do for the largest zone. Otherwise it is left to its own devices while I grab a few hours of sleep.

#MAC KEEPS REVERTING BACK TO SOUNDFLOWER PLUS#

I don’t let the system sleep, and it normally runs an hourly small Time Machine backup, small hourly ChronoSync backups, plus daily Carbon Copy Cloner backups. Last night, at around 0030, I quit the last open app and put the display onto screensaver for the night.

#MAC KEEPS REVERTING BACK TO SOUNDFLOWER UPDATE#

I leave this iMac on for very long periods, only restarting every two or three weeks, when I remember, and on this occasion it may not have been restarted since the 10.15.6 update was installed.

#MAC KEEPS REVERTING BACK TO SOUNDFLOWER SOFTWARE#

I think over that period of more than 18 months, it has had fewer than five panics in total, and those have mainly been attributable to third-party software which was rapidly removed.

Since new, it has run High Sierra briefly, then Mojave and now Catalina with hardly a problem (really!), and I can’t recall when it last had a kernel panic.

#MAC KEEPS REVERTING BACK TO SOUNDFLOWER PRO#

My own iMac Pro was updated to 10.15.6 on 15 July. The conclusion is that this is due to a memory leak in one of the kernel extensions which was updated in the 10.15.6 update, probably Sandbox.kext (). Many of those using VMWare Fusion 11.5.5 or Virtualbox 6.0.24 who leave their Windows VMs running for long periods have suffered kernel panics, which are discussed in depth here. This appears to be common among those who run some virtualisation products such as VMWare Fusion and VirtualBox, but I believe this may be a more general problem which could affect any Mac which is left running much of the time. There have been recent reports that the macOS Catalina 10.15.6 update can result in kernel panics.