ARCv2: strace unexpectedly segv

[vineetgarc]

strace is experiencing unexpected segv (not seen for same binary on nSIM / hardware).
Issue seen on refactored arc64 branch as well as old code base

~/arc/QEMU/upstream/build/arc-softmmu/qemu-system-arc -cpu archs -M virt -nographic -no-reboot -monitor none -global cpu.freq_hz=5000000 -serial stdio -device virtio-net-device,netdev=net0 -netdev user,id=net0,hostfwd=tcp::5555-:21,hostfwd=tcp::5556-:23 -kernel vmlinux

# strace ls /
potentially unexpected fatal signal 11.
Path: /usr/bin/strace
CPU: 0 PID: 96 Comm: strace Not tainted 5.6.0-00222-gd6a9d9d0a1b9 #223
Insn could not be fetched
    @No matching VMA found
ECR: 0x00040000 EFA: 0x00000001 ERET: 0x00000001
STAT32: 0x80081282 [IE U     ]   BTA: 0x00000001
 SP: 0x5ffffbf4  FP: 0x00000000 BLK: 0x200be002
LPS: 0x2005b8e2	LPE: 0x2005b906	LPC: 0x00000000
r00: 0x00000006	r01: 0x0005112c	r02: 0x00000001
r03: 0x00012ab4	r04: 0x00000000	r05: 0x2000c9f4
r06: 0x5ffffe70	r07: 0x00000000	r08: 0x00000105
r09: 0x00000042	r10: 0x20010fd4	r11: 0x200209a8
r12: 0x20021260	r13: 0x00000006	r14: 0x5ffffe74
r15: 0x0005112c	r16: 0x00000000	r17: 0x000a4444
r18: 0x20195a94	r19: 0x000a441c	r20: 0x00000000
r21: 0x00000001	r22: 0xffffffff	r23: 0x5ffffc88
r24: 0x000a4430	r25: 0x201e0e68
Segmentation fault

[vineetgarc]

vmlinux-210414-ARCv2-haps-BR-glibc-667d9c8d55-softfp.gz.log
target-210414-BR-2020.11-softfp.tar.gz.log

[cupertinomiranda]

Closing, currently fixed. Video is long due to some external mount the image waits for.