runtime crash with latest v8

[ibon]

Hi folks,

I have compiled 8.4-lkgr v8 (8.4.371.7) for Android, and I am getting the following crash at runtime.

I could supply the full stacktrace, but it is already clear this happens at Isolate initialization time.

Last time I compiled v8, was 8.0-lkgr arm7/arm64 and it turned out just fine.

```

 Build fingerprint: 'samsung/gta3xleea/gta3xl:9/PPR1.180610.011/T515XXS4ATB4:user/release-keys'

 Revision: '4'

 ABI: 'arm'

 pid: 16815, tid: 17134, name: GLThread 13261  >>> com.spellington <<<

 signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x21

 Cause: null pointer dereference

     r0  00000021  r1  00000021  r2  00000000  r3  00000007

     r4  00000000  r5  d22fd274  r6  d14bf23c  r7  d22fce74

     r8  f0068374  r9  00000000  r10 00000001  r11 8000002f

     ip  80000000  sp  d22fcd70  lr  f000c8f9  pc  effdbd0a

 5(delay),0(swap) memory pressure events were skipped after a kill!

 

 backtrace:

     #00 pc 0001ad0a  /system/lib/libc.so (strlen+22)

     #01 pc 0004b8f5  /system/lib/libc.so (__vfprintf+3224)

     #02 pc 00060103  /system/lib/libc.so (printf+54)

     #03 pc 00641993  /data/app/com.spellington-0qDtiUW1NUW5vOgloPwUkQ==/lib/arm/libspellington.so (v8::internal::Logger::SetUp(v8::internal::Isolate*)+630)

     #04 pc 0057ae9d  /data/app/com.spellington-0qDtiUW1NUW5vOgloPwUkQ==/lib/arm/libspellington.so (v8::internal::Isolate::Init(v8::internal::ReadOnlyDeserializer*, v8::internal::StartupDeserializer*)+840)

...

```

I get this consistently, with arm, arm64 and x86 versions. 

Using NDK 20.0.5594570 for cross compilation, and using latest Android Studio (NDK 21.1.6352462) to build the APK.

I have disabled Isolate logging which is fine with me, and things work as expected (just commented out `logger_->SetUp(this);` in `Isolate::Init` which I think beyond disabling Isolate logger, should be fine).

Is this something that can be addressed via config ? A bug maybe ?

This is my args.gn in case it is useful:

```

android_unstripped_runtime_outputs = false

is_component_build = false

is_debug = false

symbol_level = 1

target_cpu = "arm"

target_os = "android"

use_goma = false

v8_target_cpu = "arm"

v8_use_external_startup_data = false

v8_enable_i18n_support= false

v8_android_log_stdout = true

v8_static_library = true

v8_monolithic = true

```

Thanks in advance.

- i

[ibon]

Update:

I have tried compiling again the same exact version That did work before (8.0.426.9) and I get the same error.

I run `gclient sync` before compiling the new version. Might this be the culprit ?

[Camillo Bruni]

Hi,

Could you try a debug build instead?

See instructions here: https://v8.dev/docs/cross-compile-arm

cheers,

Camillo

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