Exit Code -1 on Raspberry Pi 5 - Regression in recent image build

[aabramos]

Technical Facts:

• Hardware: Raspberry Pi 5 (8GB) running 64-bit OS with 16KB page size (Verified via getconf PAGESIZE).
• Failure observed on Image Tag: 2026.2.0
• Working Image Tag: 2025.12.2
• Error: SIGSEGV at x64pc=0x30000080/"box64/ExitEmulation".

Observed Behavior:

• The container using the 2026.2.0 tag (currently latest) fails immediately upon execution of the Bedrock binary.
• The Box64 log confirms it is running on a Cortex-A76 with 16384 pagesize.
• The crash occurs before the Minecraft server can initialize its own logs.
• Cleared all binaries and .so files to force a clean download, but the issue persists.
• Reverting to image 2025.12.2 resolves the issue and allows the server to start normally on the same host and kernel.

Steps to Reproduce:

1. Run the image on a Raspberry Pi 5 with the default 16k page size kernel.
2. Set VERSION=LATEST (currently 1.26.1.1).
3. The server exits with code -1.

Note: Raspberry Pi 5 is a known sensitive environment for Box64 emulation. The regression seems to specifically break the 4k-to-16k memory mapping that was working in previous builds.

Logs (with BOX64_LOG=1):

DEBU[0000] Using /data to match uid and gid
DEBU[0000] Resolved UID=1000 from match path
DEBU[0000] Resolved GID=1000 from match path
Image info: buildtime=2026-02-21T23:16:46.688Z,version=master,revision=9c027c86802d67e4313ec469b6808ce4ad803a37
Looking up latest version...
Updating permissions
Starting Bedrock server...
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Cortex-A76 with 4 cores, pagesize: 16384
[BOX64] Will use hardware counter measured at 54.0 MHz emulating 3.4 GHz
[BOX64] Detected 48bits at least of address space
[BOX64] Counted 28 Env var
[BOX64] Library search path:
[BOX64] Binary search path: ./:bin/:/usr/local/sbin/:/usr/local/bin/:/usr/sbin/:/usr/bin/:/sbin/:/bin/
[BOX64] Looking for ./bedrock_server-1.26.1.1
[BOX64] 0037|SIGSEGV @0x7fff161b3130 (???(/lib/aarch64-linux-gnu/libc.so.6+0xa3130)) (x64pc=0x30000080/"box64/ExitEmulation", rsp=0x7fff15ef0000, stack=0x7fff15eb0000:0x7fff15ef0000 own=0x7fff15eb0000 fp=(nil)), for accessing 0x10331e2a0 (code=2/prot=5), db=(nil)((nil):(nil)/(nil):(nil)/???:clean, hash:0/0) handler=(nil)
RAX:0x0000000000000000 RCX:0x0000000000000000 RDX:0x0000000000000000 RBX:0x0000000000000000
RSP:0x00007fff15ef0000 RBP:0x0000000000000000 RSI:0x0000000000000000 RDI:0x0000000000000000
R8:0x0000000000000000 R9:0x0000000000000000 R10:0x0000000000000000 R11:0x0000000000000000
R12:0x0000000000000000 R13:0x0000000000000000 R14:0x0000000000000000 R15:0x0000000000000000 ES:0x002b CS:0x0033 SS:0x002b DS:0x002b FS:0x0000 GS:0x0000 FSBASE=0x6661d690 GSBASE=(nil)
2026-02-22T20:05:27.280Z WARN mc-server-runner Minecraft server failed. Inspect logs above for errors that indicate cause. DO NOT report this line as an error. {"exitCode": -1}
2026-02-22T20:05:27.280Z INFO mc-server-runner Done

[itzg]

Thanks for reporting this. Since you're familiar with box64 being involved then you'll appreciate there is nothing I can do other than wait for an upstream fix from box64.

[ethanconbolt01]

So... I assume theres nothing more to do except wait for upstream support? I was also attempting to install this on a Raspberry Pi 5 and got the same error.

[aabramos]

Well, I reported this directly to Box64, let's see if it helps.

[itzg]

This also seems to be a duplicate of #587 and it sounds like the latest version might work #587 (comment)

[itzg]

Please try 2026.2.1

[aabramos]

Same issue with 2026.2.1, unfortunately :(

DEBU[0000] Using /data to match uid and gid             
DEBU[0000] Resolved UID=1000 from match path            
DEBU[0000] Resolved GID=1000 from match path            
Image info: buildtime=2026-02-22T23:51:23.240Z,version=2026.2.1,revision=9c027c86802d67e4313ec469b6808ce4ad803a37
Using existing bedrock server executable
Updating permissions
Starting Bedrock server...
[BOX64] Dynarec for ARM64, with extension: ASIMD AES CRC32 PMULL ATOMICS SHA1 SHA2
[BOX64] Running on Cortex-A76 with 4 cores, pagesize: 16384
[BOX64] Will use hardware counter measured at 54.0 MHz emulating 3.4 GHz
[BOX64] Detected 48bits at least of address space
[BOX64] Counted 29 Env var
[BOX64] Library search path: 
[BOX64] Binary search path: ./:bin/:/usr/local/sbin/:/usr/local/bin/:/usr/sbin/:/usr/bin/:/sbin/:/bin/
[BOX64] Looking for ./bedrock_server-1.26.1.1
[BOX64] 0033|SIGSEGV @0x7ffef5663130 (???(/lib/aarch64-linux-gnu/libc.so.6+0xa3130)) (x64pc=0x30000080/"box64/ExitEmulation", rsp=0x7ffef53a0000, stack=0x7ffef5360000:0x7ffef53a0000 own=0x7ffef5360000 fp=(nil)), for accessing 0x10331e2a0 (code=2/prot=5), db=(nil)((nil):(nil)/(nil):(nil)/???:clean, hash:0/0) handler=(nil)
RAX:0x0000000000000000 RCX:0x0000000000000000 RDX:0x0000000000000000 RBX:0x0000000000000000 
RSP:0x00007ffef53a0000 RBP:0x0000000000000000 RSI:0x0000000000000000 RDI:0x0000000000000000 
R8:0x0000000000000000  R9:0x0000000000000000 R10:0x0000000000000000 R11:0x0000000000000000 
R12:0x0000000000000000 R13:0x0000000000000000 R14:0x0000000000000000 R15:0x0000000000000000 ES:0x002b CS:0x0033 SS:0x002b DS:0x002b FS:0x0000 GS:0x0000 FSBASE=0x41ea96c0 GSBASE=(nil)
2026-02-23T13:01:27.861Z	WARN	mc-server-runner	Minecraft server failed. Inspect logs above for errors that indicate cause. DO NOT report this line as an error.	{"exitCode": -1}
2026-02-23T13:01:27.861Z	INFO	mc-server-runner	Done