Realm-java: Native Realm Crashes on 4.2.0

Created on 16 May 2018 · 15Comments · Source: realm/realm-java

Questions: Can someone decrypt and let me know if updating library will resolve these native crashes? I see the phrase OsSharedRealm_native in some of these logs, could it just be linked to a shared instance that has encryption? We have tried to reduce the amount of times realm could be open when not running in main instance.

Bugs: Native crashes reported in google play console. No steps to repro

Expected Results

Reduce/Remove crashes

Actual Results

1st trace Motorola Moto Z (griffin), 3072MB RAM, Android 7.1

*** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
pid: 0, tid: 0 >>> com.package.myapp <<<

backtrace:

00 pc 000000000001b120 /system/lib64/libc.so (memcpy+352)
01 pc 000000000012de10 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
02 pc 000000000012deb0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
03 pc 000000000012e188 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
04 pc 000000000012e358 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
05 pc 00000000001a5d48 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
06 pc 00000000001a5fb8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
07 pc 00000000001a6004 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
08 pc 00000000001a6f8c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
09 pc 000000000012b660 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
10 pc 000000000012e728 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
11 pc 00000000001a6ef4 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
12 pc 00000000001a3638 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
13 pc 00000000001a38d0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
14 pc 00000000001a53e8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
15 pc 0000000000105884 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
16 pc 00000000000eaedc /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
17 pc 000000000006b8a0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so (Java_io_realm_internal_OsSharedRealm_nativeCommitTransaction+48)
18 pc 0000000000f71a34 /data/app/com.package.myapp-1/oat/arm64/base.odex

2nd trace Samsung Galaxy S7 (heroqltevzw), 4096MB RAM, Android 7.0

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
pid: 0, tid: 0 >>> com.package.myapp <<<

backtrace:
#00 pc 0000000000127ea8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#01 pc 0000000000126cd8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#02 pc 0000000000126d3c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#03 pc 00000000001ee8f8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#04 pc 00000000001eea4c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#05 pc 00000000001f9b74 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#06 pc 000000000019f300 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#07 pc 000000000019f44c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#08 pc 00000000001f7668 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#09 pc 000000000019f3a0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#10 pc 000000000019f44c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#11 pc 00000000001f7668 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#12 pc 000000000019f3a0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#13 pc 000000000019f44c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#14 pc 00000000001f7668 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#15 pc 000000000019f3a0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#16 pc 000000000019f44c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#17 pc 00000000000d1e68 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#18 pc 00000000000d750c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#19 pc 00000000000e9e68 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#20 pc 00000000000e9e08 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#21 pc 00000000000ed4fc /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#22 pc 0000000000109d58 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#23 pc 00000000000eaba8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#24 pc 000000000006e938 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so (Java_io_realm_internal_OsSharedRealm_nativeGetSharedRealm+480)
#25 pc 000000000135be40 /data/app/com.package.myapp-1/oat/arm64/base.odex

3rd trace Samsung Galaxy S7 Edge (hero2qltevzw), 4096MB RAM, Android 7.0

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
pid: 0, tid: 0 >>> com.package.myapp <<<

backtrace:
#00 pc 000000000001b4a0 /system/lib64/libc.so (memcpy+352)
#01 pc 000000000012de10 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#02 pc 000000000012deb0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#03 pc 000000000012e968 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#04 pc 0000000000126d88 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#05 pc 000000000012defc /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#06 pc 000000000012e968 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#07 pc 0000000000126d88 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#08 pc 000000000012defc /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#09 pc 000000000012e188 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#10 pc 000000000012e358 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#11 pc 000000000018e25c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#12 pc 000000000018e744 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#13 pc 00000000001969c8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#14 pc 0000000000196f6c /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#15 pc 00000000001978f4 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#16 pc 00000000001a77ec /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#17 pc 00000000001edb60 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#18 pc 00000000001a38c0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#19 pc 00000000001a53e8 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#20 pc 0000000000105884 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#21 pc 00000000000eaedc /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so
#22 pc 000000000006b8a0 /data/app/com.package.myapp-1/lib/arm64/librealm-jni.so (Java_io_realm_internal_OsSharedRealm_nativeCommitTransaction+48)
#23 pc 0000000000f72a34 /data/app/com.package.myapp-1/oat/arm64/base.odex

4th trace Samsung Galaxy S7 (heroqltevzw), 4096MB RAM, Android 7.0

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
pid: 0, tid: 0 >>> com.package.myapp <<<

backtrace:
#00 pc 000000000003bad0 /data/app/com.package.myapp-2/lib/arm64/librealm-jni.so
#01 pc 00000000000bd66c /data/app/com.package.myapp-2/lib/arm64/librealm-jni.so
#02 pc 00000000000512fc /data/app/com.package.myapp-2/lib/arm64/librealm-jni.so (Java_io_realm_internal_OsList_nativeGetValue+396)
#03 pc 0000000002504dfc /data/app/com.package.myapp-2/oat/arm64/base.odex

Version of Realm and tooling

Realm version(s): 4.2.0

Realm sync feature enabled: no

Android Studio version: 3.1

Which Android version and device: Several marked in trace

Encryption is definitely used.

O-Community Reproduction-Required T-Bug-Crash

Source

sirivanleo

👍1

Most helpful comment

@ironage the memmove was released in 3.1.1 this is using 4.2.0

nhachicha on 17 May 2018

👍3

All 15 comments

Unstripped traces:

1st trace Motorola Moto Z (griffin), 3072MB RAM, Android 7.1

000000000012de10 char* realm::safe_copy_n<char const*, long, char*>(char const*, long, char*)
000000000012deb0 realm::Array::do_copy_on_write(unsigned long)
000000000012e188 realm::Array::alloc(unsigned long, unsigned long)
000000000012e358 realm::Array::insert(unsigned long, long)
00000000001a5d48 realm::GroupWriter::extend_free_space(unsigned long)
00000000001a5fb8 realm::GroupWriter::reserve_free_space(unsigned long)
00000000001a6004 realm::GroupWriter::get_free_space(unsigned long)
00000000001a6f8c realm::GroupWriter::write_array(char const*, unsigned long, unsigned int)
000000000012b660 realm::Array::do_write_shallow(realm::_impl::ArrayWriterBase&) const
000000000012e728 realm::Array::do_write_deep(realm::_impl::ArrayWriterBase&, bool) const
00000000001a6ef4 realm::GroupWriter::write_group()
00000000001a3638 realm::SharedGroup::low_level_commit(unsigned long)
00000000001a38d0 realm::SharedGroup::do_commit()
00000000001a53e8 realm::SharedGroup::commit_and_continue_as_read()
0000000000105884 realm::_impl::RealmCoordinator::commit_write(realm::Realm&)
00000000000eaedc realm::Realm::commit_transaction()
000000000006b8a0 Java_io_realm_internal_OsSharedRealm_nativeCommitTransaction

2nd trace Samsung Galaxy S7 (heroqltevzw), 4096MB RAM, Android 7.0

0000000000127ea8 realm::SlabAlloc::do_translate(unsigned long) const
0000000000126cd8 realm::Allocator::translate(unsigned long) const
0000000000126d3c realm::Array::init_from_ref(unsigned long)
00000000001ee8f8 realm::Spec::init(realm::MemRef)
00000000001eea4c realm::Spec::init(unsigned long)
00000000001f9b74 realm::Table::init(unsigned long, realm::ArrayParent*, unsigned long, bool)
000000000019f300 realm::Group::create_table_accessor(unsigned long)
000000000019f44c realm::Group::do_get_table(unsigned long, bool (*)(realm::Spec const&))
00000000001f7668 realm::Table::refresh_column_accessors(unsigned long)
000000000019f3a0 realm::Group::create_table_accessor(unsigned long)
000000000019f44c realm::Group::do_get_table(unsigned long, bool (*)(realm::Spec const&))
00000000001f7668 realm::Table::refresh_column_accessors(unsigned long)
000000000019f3a0 realm::Group::create_table_accessor(unsigned long)
000000000019f44c realm::Group::do_get_table(unsigned long, bool (*)(realm::Spec const&))
00000000001f7668 realm::Table::refresh_column_accessors(unsigned long)
000000000019f3a0 realm::Group::create_table_accessor(unsigned long)
000000000019f44c realm::Group::do_get_table(unsigned long, bool (*)(realm::Spec const&))
00000000000d1e68 realm::ObjectSchema::ObjectSchema(realm::Group const&, realm::StringData, unsigned long)
00000000000d750c realm::ObjectStore::schema_from_group(realm::Group const&)
00000000000e9e68 realm::Realm::read_schema_from_group_if_needed()
00000000000e9e08 realm::Realm::read_group()
00000000000ed4fc realm::Realm::Realm(realm::Realm::Config, std::shared_ptr<realm::_impl::RealmCoordinator>)
0000000000109d58 realm::_impl::RealmCoordinator::get_realm(realm::Realm::Config)
00000000000eaba8 realm::Realm::get_shared_realm(realm::Realm::Config)
000000000006e938 Java_io_realm_internal_OsSharedRealm_nativeGetSharedRealm

3rd trace Samsung Galaxy S7 Edge (hero2qltevzw), 4096MB RAM, Android 7.0

000000000012de10 char* realm::safe_copy_n<char const*, long, char*>(char const*, long, char*)
000000000012deb0 realm::Array::do_copy_on_write(unsigned long)
000000000012e968 realm::Array::set(unsigned long, long)
0000000000126d88 realm::Array::update_parent()
000000000012defc realm::Array::do_copy_on_write(unsigned long)
000000000012e968 realm::Array::set(unsigned long, long)
0000000000126d88 realm::Array::update_parent()
000000000012defc realm::Array::do_copy_on_write(unsigned long)
000000000012e188 realm::Array::alloc(unsigned long, unsigned long)
000000000012e358 realm::Array::insert(unsigned long, long)
000000000018e25c realm::ArrayBinary::insert(unsigned long, realm::BinaryData, bool)
000000000018e744 realm::ArrayBinary::bptree_leaf_insert(unsigned long, realm::BinaryData, bool, realm::TreeInsertBase&)
00000000001969c8 realm::BinaryColumn::leaf_insert(realm::MemRef, realm::ArrayParent&, unsigned long, realm::Allocator&, unsigned long, realm::BpTreeNode::TreeInsert<realm::BinaryColumn>&)
0000000000196f6c unsigned long realm::BpTreeNode::bptree_append<realm::BinaryColumn>(realm::BpTreeNode::TreeInsert<realm::BinaryColumn>&)
00000000001978f4 realm::BinaryColumn::do_insert(unsigned long, realm::BinaryData, bool, unsigned long)
00000000001a77ec (anonymous namespace)::InRealmHistoryImpl::prepare_changeset(char const*, unsigned long, unsigned long)
00000000001edb60 realm::TrivialReplication::do_prepare_commit(unsigned long)
00000000001a38c0 realm::SharedGroup::do_commit()
00000000001a53e8 realm::SharedGroup::commit_and_continue_as_read()
0000000000105884 realm::_impl::RealmCoordinator::commit_write(realm::Realm&)
00000000000eaedc realm::Realm::commit_transaction()
000000000006b8a0 Java_io_realm_internal_OsSharedRealm_nativeCommitTransaction

4th trace Samsung Galaxy S7 (heroqltevzw), 4096MB RAM, Android 7.0

000000000003bad0 string_to_hex(std::string const&, realm::StringData&, char const*, char const*, unsigned short*, unsigned short*, unsigned long, unsigned long)
00000000000bd66c to_jstring(_JNIEnv*, realm::StringData)
00000000000512fc Java_io_realm_internal_OsList_nativeGetValue

nhachicha on 16 May 2018

I can not relate these traces to known bugs in Core.

finnschiermer on 17 May 2018

@kneth if they are using an old realm-java version, could it be your friend the memmove bug?

ironage on 17 May 2018

@ironage the memmove was released in 3.1.1 this is using 4.2.0

nhachicha on 17 May 2018

👍3

@sirivanleo Can you try to increase the log level and report the result: RealmLog.setLevel(LogLevel.VERBOSE) (you can do this after the init)

nhachicha on 18 May 2018

Any error messages (from asserts)? Or can I assume that these crashes are segfaults? The stack traces does not look like any we've seen before.

Are there any other indicators of trouble on the affected devices, for example disk full or very close to full?

We likely need to be able to reproduce this to make progress

finnschiermer on 20 May 2018

@sirivanleo The logs should also contain an error message or assertion that failed. Without that information it is really hard to say what is going wrong.

Also, is it something you can reproduce consistently?

cmelchior on 22 May 2018

These are seg faults, I do not have the seg message at this time I can get those tomorrow but they are showing up mainly in our Google Play console. I tried to add the ALL logging but it actually made our app perform extremely slow so I reduced logging to INFO in prod and DEBUG in debug(Current config in prod is WARN).
These changes won't go out for another week or 2 so I can't get more info until then.

Is there anything people recommend we do in regards to how we are accessing realm that could mitigate these problems? We tend to open and close the realm thread per access and isolate these transactions to our internal Realm Scheduler. We then copyFromRealm so we don't create a live link to the realm object and don't get caught up in the wrong thread.

We have no idea how this happens we cannot reproduce these problems internal, I've only seen the state happen once and I wasn't able to determine root cause before the app was uninstalled and cleaned up.

sirivanleo on 22 May 2018

I don't think upping the log level will do much in your case. That is mostly useful in order to trace the route through the code at a higher level, which I don't think will give us much here.

It would definitely be interesting if you have metrics around free space and memory on the device around the time of the crash, because some of the traces do indicate it might be a problem with running out of either disk or memory, but without the error message itself it is hard to know.

cmelchior on 22 May 2018

Was able to get this crash on my Pixel 2XL.
I also have a more detailed Bug Report, let me know if you guys want to take a look.

Version of Realm and tooling
Realm version(s): 5.1.0

Realm sync feature enabled: no

Android Studio version: 3.2

Which Android version and device: Several marked in trace

Encryption is definitely used.

--------- beginning of crash 2018-06-14 11:07:33.255 13841-13841/? A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x28 in tid 13841 (.example.android), pid 13841 (.example.android) 2018-06-14 11:07:33.326 13926-13926/? I/crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone 2018-06-14 11:07:33.330 859-859/? I//system/bin/tombstoned: received crash request for pid 13841 2018-06-14 11:07:33.337 13926-13926/? I/crash_dump64: performing dump of process 13841 (target tid = 13841) 2018-06-14 11:07:33.337 13926-13926/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 2018-06-14 11:07:33.337 13926-13926/? A/DEBUG: Build fingerprint: 'google/taimen/taimen:8.1.0/OPM4.171019.016.B1/4720843:user/release-keys' 2018-06-14 11:07:33.337 13926-13926/? A/DEBUG: Revision: 'rev_10' 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: ABI: 'arm64' 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: pid: 13841, tid: 13841, name: .example.android >>> com.example.android <<< 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x28 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: Cause: null pointer dereference 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x0 0000000000000000 x1 0000000000000005 x2 000000773d286f00 x3 0000000000000004 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x4 0000000000000000 x5 0000000000000000 x6 000000004adac1f8 x7 00000000ec37d6f7 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x8 0000000000000000 x9 0000000000000002 x10 0000000000000001 x11 0000000000000000 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x12 000000774840dad8 x13 0000000097ca21c0 x14 0000000021cf4b5e x15 00000000b5bc7662 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x16 0000007730e8b7e0 x17 00000077cbf0bb50 x18 0000000083b8a89b x19 000000773d286f00 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x20 00000077312a4740 x21 0000000000000004 x22 000000773d286f00 x23 000000773d2870c0 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x24 0000000000000005 x25 000000000000000e x26 000000773d2c7010 x27 000000773d286f78 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: x28 0000000000000000 x29 0000007fea0565f0 x30 0000007730d7c164 2018-06-14 11:07:33.338 13926-13926/? A/DEBUG: sp 0000007fea056400 pc 0000007730d7b214 pstate 0000000060000000 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: backtrace: 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #00 pc 00000000001f5214 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #01 pc 00000000001f6160 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #02 pc 00000000001f50cc /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #03 pc 000000000019c380 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #04 pc 000000000019c42c /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #05 pc 00000000001f4f04 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #06 pc 000000000019c380 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #07 pc 000000000019c42c /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #08 pc 00000000000d0b98 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #09 pc 00000000000d643c /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #10 pc 00000000000e91e4 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #11 pc 00000000000e9184 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #12 pc 00000000000ebe44 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #13 pc 00000000001091f4 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #14 pc 00000000000e9fb0 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #15 pc 000000000006e88c /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/lib/arm64/librealm-jni.so (Java_io_realm_internal_OsSharedRealm_nativeGetSharedRealm+480) 2018-06-14 11:07:33.344 13926-13926/? A/DEBUG: #16 pc 00000000000367a4 /data/app/com.example.android-malHfvIHMXxEt1vBqtiDpw==/oat/arm64/base.odex (offset 0x32000) 2018-06-14 11:07:34.054 859-859/? E//system/bin/tombstoned: Tombstone written to: /data/tombstones/tombstone_09 2018-06-14 11:07:34.063 1140-1190/? I/BootReceiver: Copying /data/tombstones/tombstone_09 to DropBox (SYSTEM_TOMBSTONE)