I have a repeatable crash using qemu emulation to cross compile amd64 to arm64 using poudriere and qemu. While building rubygem-asciidoctor the emulated ruby33 and native qemu both dump core. This is on 15.0-CURRENT running inside bhyve. I have overridden some default versions. RUBY_DEFAULT=3.3 LLVM_DEFAULT=18 Host /etc/make.conf sets CPUTYPE?=znver1. Target poudriere.d/make.conf sets CPUTYPE?=cortex-a53. The log says. => SHA256 Checksum OK for rubygem/asciidoctor-2.0.22.gem. Unpacked gem: '/wrkdirs/usr/ports/textproc/rubygem-asciidoctor/work/asciidoctor-2.0.22' <jemalloc>: jemalloc_rtree.c:205: Failed assertion: "!dependent || leaf != NULL" *** Signal 6 There are two core dumps. # ls -ldh *core -r--r--r-- 1 root 6001 1.0G Apr 10 14:26 qemu-aarch64-static.core -rw-r--r-- 1 root 6001 20K Apr 10 14:26 qemu_ruby33.core # file *core qemu-aarch64-static.core: ELF 64-bit LSB core file, x86-64, version 1 (FreeBSD), FreeBSD-style, from '/usr/local/bin/qemu-aarch64-static /usr/local/bin/ruby33 /usr/local/bin/gem unpa', pid=42031 qemu_ruby33.core: ELF 64-bit LSB core file, ARM aarch64, version 1 (FreeBSD), can't read elf program headers at 20616 The qemu core has no usable symbols and I don't know how to debug the arm64 core on an amd64 host. I can run again with whatever debugging settings seem useful. (lldb) bt * thread #1, name = 'qemu-aarch64-static', stop reason = signal SIGSEGV * frame #0: 0x00000000605f1a4a qemu-aarch64-static`___lldb_unnamed_symbol12822 + 282 frame #1: 0x0000000060320db7 qemu-aarch64-static`___lldb_unnamed_symbol1691 + 71 frame #2: 0x000000006030cef6 qemu-aarch64-static`___lldb_unnamed_symbol1329 + 3734 frame #3: 0x000000006030f197 qemu-aarch64-static`___lldb_unnamed_symbol1365 + 135 frame #4: 0x00000000603106b9 qemu-aarch64-static`___lldb_unnamed_symbol1372 + 1481 frame #5: 0x0000000060308f5d qemu-aarch64-static`___lldb_unnamed_symbol1313 + 157 frame #6: 0x0000000060309f33 qemu-aarch64-static`___lldb_unnamed_symbol1320 + 2931 frame #7: 0x0000000060572b48 qemu-aarch64-static`___lldb_unnamed_symbol10704 + 280 frame #8: 0x000000006029e110 qemu-aarch64-static`___lldb_unnamed_symbol1 + 48 (lldb) x/i $pc x/i $pc -> 0x605f1a4a: f3 48 a5 other rep movsq (%rsi), %es:(%rdi) (lldb) register read General Purpose Registers: rax = 0x0000000880938f90 rbx = 0x0000000000001000 rcx = 0x0000000000000200 rdx = 0x0000000000001000 rdi = 0x0000000880938f90 rsi = 0x00007fffe07c3000 rbp = 0x0000000880938a10 rsp = 0x00000008809389e8 r8 = 0xffff8008a0175f90 r9 = 0x0000000000000000 r10 = 0x0000000000000000 r11 = 0x0000000000000246 r12 = 0x0000000000016000 r13 = 0x0000000880938b08 r14 = 0x00007fffe07c3000 r15 = 0x0000000880938f90 rip = 0x00000000605f1a4a qemu-aarch64-static`___lldb_unnamed_symbol12822 + 282 rflags = 0x0000000000010216 cs = 0x0000000000000043 fs = 0x0013 gs = 0x001b ss = 0x000000000000003b ds = 0x003b es = 0x003b (lldb) p (char *)$rdi (char *) 0x0000000880938f90 "\U0000007fELF\U00000002\U00000001\U00000001\t" (lldb) x/8g $rdi 0x880938f90: 0x09010102464c457f 0x0000000000000000 0x880938fa0: 0x0000000100b70003 0x0000000000000000 0x880938fb0: 0x0000000000000040 0x0000000000001280 0x880938fc0: 0x0038004000000000 0x001a001b0040000a The memory addressed by $rsi is unreadable, as is the previous page ($rsi - 8).
This is the failing shell command, with /tmp/work being any scratch directory you like. Run it in in a qemu-emulated arm64 world with ruby 3.3 installed. # gem unpack --target=/tmp/work /distfiles/rubygem/asciidoctor-2.0.22.gem Unpacked gem: '/tmp/work/asciidoctor-2.0.22' <jemalloc>: jemalloc_rtree.c:205: Failed assertion: "!dependent || leaf != NULL" Segmentation fault (core dumped)