sudo strace hexagonrpcd -f /dev/fastrpc-sdsp -s -R /usr/share/qcom/sm8150/xiaomi/nabu/ > strace.log
execve("/usr/bin/hexagonrpcd", ["hexagonrpcd", "-f", "/dev/fastrpc-sdsp", "-s", "-R", "/usr/share/qcom/sm8150/xiaomi/na"...], 0xffffe78575e8 /* 47 vars */) = 0
set_tid_address(0xffffb3c88e80)         = 2323
brk(NULL)                               = 0xaaaae5282000
brk(0xaaaae5284000)                     = 0xaaaae5284000
mmap(0xaaaae5282000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xaaaae5282000
openat(AT_FDCWD, "/etc/ld-musl-aarch64.path", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/libhexagonrpc.so", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/local/lib/libhexagonrpc.so", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/libhexagonrpc.so", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0755, st_size=67192, ...}) = 0
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 960) = 960
mmap(NULL, 135168, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xffffb3ba5000
mmap(0xffffb3bc4000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xf000) = 0xffffb3bc4000
close(3)                                = 0
mprotect(0xffffb3bc4000, 4096, PROT_READ) = 0
mprotect(0xffffb3c85000, 4096, PROT_READ) = 0
mprotect(0xaaaadae0f000, 4096, PROT_READ) = 0
ioctl(1, TIOCGWINSZ, 0xffffc0233ac8)    = -1 ENOTTY (Not a tty)
writev(1, [{iov_base="Starting hexagonrpcd (INIT_ATTAC"..., iov_len=59}, {iov_base="\n", iov_len=1}], 2) = 60
openat(AT_FDCWD, "/dev/fastrpc-sdsp", O_RDWR|O_LARGEFILE) = 3
ioctl(3, FASTRPC_IOCTL_INIT_ATTACH_SNS, 0) = -1 EPIPE (Broken pipe)
writev(2, [{iov_base="Could not attach to FastRPC node"..., iov_len=46}, {iov_base=NULL, iov_len=0}], 2Could not attach to FastRPC node: Broken pipe
) = 46
close(3)                                = 0
exit_group(4)                           = ?
+++ exited with 4 +++