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System Crash

Someone can explain what happened?

panic(cpu 1 caller 0xfffffff022ce8dac): "Digital Mic::allocateBuffers attempting to release/re-allocate DMA buffer while DMA is streaming."

Debugger message: panic

Memory ID: 0x6

OS release type: User

OS version: 18P4346

macOS version: 20D74

Kernel version: Darwin Kernel Version 20.3.0: Tue Jan 5 18:50:06 PST 2021; root:xnu-7195.80.35~4/RELEASE_ARM64_T8010

Kernel UUID: C7A021A0-C976-37C8-B2E7-A18B3A7CD973

iBoot version: iBoot-6723.80.19

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0x1

x86 Previous Power Transitions: 0x10001000100

PCIeUp link state: 0x89271614

Paniclog version: 13

Kernel slide: 0x000000001abe4000

Kernel text base: 0xfffffff021be8000

mach_absolute_time: 0x3c914385bca

Epoch Time: sec usec

Boot : 0x60240c7d 0x00096cba

Sleep : 0x602763d6 0x0009d175

Wake : 0x60276b2b 0x000695f0

Calendar: 0x6027f865 0x0008f1f8

Panicked task 0xffffffe19bcaf3c8: 901 pages, 11 threads: pid 46: bridgeaudiod

Panicked thread: 0xffffffe19be475b8, backtrace: 0xffffffe80cc5b160, tid: 68480

lr: 0xfffffff022314494 fp: 0xffffffe80cc5b1a0

lr: 0xfffffff0223142f0 fp: 0xffffffe80cc5b210

lr: 0xfffffff02243ad7c fp: 0xffffffe80cc5b2e0

lr: 0xfffffff0229295fc fp: 0xffffffe80cc5b2f0

lr: 0xfffffff022314024 fp: 0xffffffe80cc5b670

lr: 0xfffffff022314024 fp: 0xffffffe80cc5b6d0

lr: 0xfffffff02330aaf8 fp: 0xffffffe80cc5b6f0

lr: 0xfffffff022ce8dac fp: 0xffffffe80cc5b710

lr: 0xfffffff022ce758c fp: 0xffffffe80cc5b780

lr: 0xfffffff022d0ddd8 fp: 0xffffffe80cc5b7a0

lr: 0xfffffff022c0fd9c fp: 0xffffffe80cc5b7b0

lr: 0xfffffff0228b6d28 fp: 0xffffffe80cc5b810

lr: 0xfffffff0228881c8 fp: 0xffffffe80cc5b880

lr: 0xfffffff022c105a0 fp: 0xffffffe80cc5b900

lr: 0xfffffff0228c0c44 fp: 0xffffffe80cc5baa0

lr: 0xfffffff022408280 fp: 0xffffffe80cc5bbc0

lr: 0xfffffff022319a1c fp: 0xffffffe80cc5bc20

lr: 0xfffffff0222ec69c fp: 0xffffffe80cc5bca0

lr: 0xfffffff022306e4c fp: 0xffffffe80cc5bd50

lr: 0xfffffff02242f400 fp: 0xffffffe80cc5be20

lr: 0xfffffff02243b044 fp: 0xffffffe80cc5bef0

lr: 0xfffffff0229295fc fp: 0xffffffe80cc5bf00

MacBook Air 13″, macOS 11.2

Posted on Feb 13, 2021 8:13 AM

Best reply

steve626

Level 6

10,061 points

Posted on Feb 13, 2021 10:11 AM

What were you doing at the time of the crash? Were you using any peripherals that were connected to your Mac? Were you streaming, gaming, or watching videos? The crash occurred during Direct Memory Access (DMA) which involves directly reserving memory for some intensive activity and bypassing the computer main processor for memory allocation. Since this works around the normal memory allocation process, this can lead to a memory conflict, which if serious enough, can bring the entire system to a halt. Unless this happens again, I would not worry about it.

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System Crash

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