Error on realloc call

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cy8berpunk

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Feb 22, 2023, 5:26:39 AM2/22/23
to Dr. Memory Users
Hi,
I'm completely new to dbi and I'm unsure wether it's me or an actual bug.
So I've written a client that is meant to create multiple arrays that store mem reads/ writes.
When the array limit is reached I'm calling realloc(it's a very basic process, nothing complex) but upon access of the newly returned pointer (which is only 12k away from the original pointer), I'm getting a segfault.

regards Luick
The error:
```
<Application /home/ubuntu/projekte/MlConcurrencyAstAnalyser/basicMultiThread.elf (10722).  Tool internal crash at PC 0x0000000072004f50.  Please report this at your tool's issue tracker.  Program aborted.
Received SIGSEGV at client library pc 0x0000000072004f50 in thread 10722
Base: 0x0000000071000000
Registers:    eflags=0x0000000060001000
version 9.0.1, custom build
-no_dynamic_options -client_lib '/home/ubuntu/projekte/MlConcurrencyAstAnalyser/build/libmyclient.so;0;' -client_lib64 '/home/ubuntu/projekte/MlConcurrencyAstAnalyser/build/libmyclient.so;0;' -code_api -stack_size 56K -signal_stack_size 32K -max_elide_jmp 0 -max_elide_call 0 -early_inject -emulate_brk -no_inline_ignored_
0x0000fffdbc10bc50 0x0000000072002c5c
0x0000fffdbc10bcc0 0x000000003101b7c4
0x0000ffffe7fb44c0 0x0000ffffbc07e108
/home/ubuntu/projekte/MlConcurrencyAstAnalyser/DynamoRIO/lib64/release/libdynamorio.so=0x0000000071000000
/home/ubuntu/projekte/MlConcurrencyAstAnalyser/build/libmyclient.so=0x0000000072000000
/lib/aarch64-linux-gnu/libc.so.6=0x0000fffdbbef2000
/usr/lib/ld-linux-aarch64.so.1=0x0000fffdbbebd000
/home/ubuntu/projekte/MlConcurrencyAstAnalyser/DynamoRIO/ext/lib64/release/libdrx.so=0x0000000077000000
/home/ubuntu/projekte/MlConcurrencyAstAnalyser/Dyn>
```

Derek Bruening

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Feb 22, 2023, 8:10:09 PM2/22/23
to drmemor...@googlegroups.com
I think you meant to send this to https://groups.google.com/g/dynamorio-users rather than this list?

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