[arm] Crash on android

[kuangzhongwen]

#ifndef XMRIG_ARM

define VARIANT1_INIT(part) \

uint64_t tweak1_2_##part = 0; \
if (VARIANT > 0) { \
    tweak1_2_##part = (*reinterpret_cast<const uint64_t*>(input + 35 + part * size) ^ \
                      *(reinterpret_cast<const uint64_t*>(ctx[part]->state) + 24)); \
}

#else

define VARIANT1_INIT(part) \

uint64_t tweak1_2_##part = 0; \
if (VARIANT > 0) { \
    volatile const uint64_t a = *reinterpret_cast<const uint64_t*>(input + 35 + part * size); \
    volatile const uint64_t b = *(reinterpret_cast<const uint64_t*>(ctx[part]->state) + 24); \
    tweak1_2_##part = a ^ b; \
}

#endif

The "self_test" function crashed in this piece, my cell phone was Android 7, I used NDK compilation, compiled and passed, but this crash problem occurred during the runtime, and looked at the JNI crash log:
05-08 22:33:22.919 26600 26600 F DEBUG : signal 7 (SIGBUS), code 1 (BUS_ADRALN), fault addr 0xc9170aa3
05-08 22:33:22.919 26600 26600 F DEBUG : r0 c6db2000 r1 c6cfe780 r2 f2052714 r3 f2052714
05-08 22:33:22.919 26600 26600 F DEBUG : r4 c9170aa3 r5 e711b008 r6 c937c9c4 r7 0000004c
05-08 22:33:22.919 26600 26600 F DEBUG : r8 df990504 r9 c937ccb0 sl c9121c45 fp 0000000d
05-08 22:33:22.919 26600 26600 F DEBUG : ip 00000000 sp c6cfe840 lr c911170d pc c911c67c cpsr 60010030
05-08 22:33:22.920 419 419 E ServiceManager: try to find service failed, not allowed access from isolated processes.
05-08 22:33:22.921 26600 26600 F DEBUG :
05-08 22:33:22.921 26600 26600 F DEBUG : backtrace:
05-08 22:33:22.921 26600 26600 F DEBUG : #00 pc 0002e67c /data/app/io.waterhole.miner-1/lib/arm/libmonero-miner.so (_Z23cryptonight_single_hashILN5xmrig4AlgoE0ELb1ELi1EEvPKhjPhPP15cryptonight_ctx+75)
05-08 22:33:22.921 26600 26600 F DEBUG : #1 pc 00031f25 /data/app/io.waterhole.miner-1/lib/arm/libmonero-miner.so (_ZN11MultiWorkerILj1EE8selfTestEv+92)
05-08 22:33:22.921 26600 26600 F DEBUG : #2 pc 00033cd9 /data/app/io.waterhole.miner-1/lib/arm/libmonero-miner.so (_ZN7Workers7onReadyEPv+148)
05-08 22:33:22.921 26600 26600 F DEBUG : #3 pc 00047983 /system/lib/libc.so (_ZL15__pthread_startPv+22)
05-08 22:33:22.922 26600 26600 F DEBUG : #4 pc 00019efd /system/lib/libc.so (__start_thread+6)

It seems that the memory alignment problem, I hope you can help me. Thx!

[xmrig]

It known issue #446 still no fix it.
@NanoBytesInc maybe you already found solution?
Thank you.

[kuangzhongwen]

@xmrig https://github.com/NanoBytesInc/miners，he @NanoBytesInc ran the old version on Android. The code seems to have changed little. Is there anything special?

[kuangzhongwen]

@NanoBytesInc But my machine is 64-bit, I can use the old xmrig you compiled to run, but the new version of xmrig I compiled has crashed.

root 590 1 2252552 17024 0 0000000000 S zygote64

The new versions of this code(crash):
#ifndef XMRIG_ARM
#define VARIANT1_INIT(part)
uint64_t tweak1_2_##part = 0;
if (VARIANT > 0) {
tweak1_2_##part = (reinterpret_cast<const uint64_t>(input + 35 + part * size) ^
(reinterpret_cast<const uint64_t>(ctx[part]->state) + 24));
}
#else
#define VARIANT1_INIT(part)
uint64_t tweak1_2_##part = 0;
if (VARIANT > 0) {
volatile const uint64_t a = reinterpret_cast<const uint64_t>(input + 35 + part * size);
volatile const uint64_t b = (reinterpret_cast<const uint64_t>(ctx[part]->state) + 24);
LOGD("%s", "arm VARIANT1_INIT end");
}
#endif

The old versions of this code(ok):
#define VARIANT1_INIT(part)
uint64_t tweak1_2_##part = 0;
if (VARIANT > 0) {
tweak1_2_##part = (reinterpret_cast<const uint64_t>(input + 35 + part * size) ^
(reinterpret_cast<const uint64_t>(ctx->state##part) + 24));
}