Memory leak in macOS 10.15.6?

Software
1

My iMac Pro has been kernel panicking every night, and this seems to have started after updating to 10.15.6.

I leave it on, come in in the morning and it’s off. I turn it on, login, it begins to boot, then I get the “circle of death” meaning no OS present. Turn it off, and back on, log in, and it boots. Tells me about the shutdown, with text beginning as below.

Anyone else, or am I just lucky?

panic(cpu 11 caller 0xffffff8008f729eb): "zalloc: zone map exhausted while allocating from zone buf.16384, likely due to memory leak in zone kalloc.32 (7849201664 total bytes, 245287542 elements allocated)"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.1/osfmk/kern/zalloc.c:3627
Backtrace (CPU 11), Frame : Return Address
0xffffff838344b740 : 0xffffff8008f1a65d 
0xffffff838344b790 : 0xffffff8009054a75 
0xffffff838344b7d0 : 0xffffff80090465fe 
0xffffff838344b820 : 0xffffff8008ec0a40 
0xffffff838344b840 : 0xffffff8008f19d27 
0xffffff838344b940 : 0xffffff8008f1a117 
0xffffff838344b990 : 0xffffff80096c1abc 
0xffffff838344ba00 : 0xffffff8008f729eb 
0xffffff838344bb30 : 0xffffff8009157b1f 
0xffffff838344bb60 : 0xffffff8009157910 
0xffffff838344bbb0 : 0xffffff800915b622 
0xffffff838344bcb0 : 0xffffff7f8c67ff24 
0xffffff838344bd00 : 0xffffff7f8c67fd26 
0xffffff838344bd20 : 0xffffff7f8c67f833 
0xffffff838344bdb0 : 0xffffff7f8c7461ab 
0xffffff838344bdf0 : 0xffffff7f8c745ef9 
0xffffff838344be50 : 0xffffff7f8c75c51e 
0xffffff838344bf30 : 0xffffff7f8c75bfb9 
0xffffff838344bfa0 : 0xffffff8008ec013e 
      Kernel Extensions in backtrace:
         com.apple.filesystems.apfs(1412.141.1)[6DA33D13-4501-3D48-B4D8-0329E6AEC86D]@0xffffff7f8c67d000->0xffffff7f8c7a4fff
            dependency: com.apple.kec.corecrypto(1.0)[804DD660-F561-3444-A076-05D7A52D65E3]@0xffffff7f89f46000
            dependency: com.apple.driver.AppleEffaceableStorage(1.0)[E4993D72-53F9-3248-8711-2A0410F5FCA2]@0xffffff7f89e9e000
            dependency: com.apple.iokit.IOStorageFamily(2.1)[3581A46A-F3F3-3CE7-BA52-7046E8D66C32]@0xffffff7f89c80000
2

Mine too. I’m just shutting down every night as I haven’t had chance to investigate further.

1 Like
3

I’ve recently begun to see a kernel panic on shutdown. No idea if this could be related to @JohnAtl‘s issue. I’m away from home, so haven’t done any troubleshooting yet.

Update: My problem is not the same as @JohnAtl’s.

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