Hi Christian,
Thanks for confirming. The stack pointer was 0x412fc000, but I fixed the issue by compiling with "-fstack-protector-all". I guess it was a stack overflow.
Best, Rumen
________________________________________ From: Christian Prochaska via users users@lists.genode.org Sent: Tuesday, February 24, 2026 7:29 AM To: users@lists.genode.org Cc: Christian Prochaska Subject: Re: How To Add Address Sanitization
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Hi Rumen,
address sanitization is currently not supported, only undefined behavior sanitization when using the Genode build system (not Goa).
What is the value of the stack pointer? Maybe it is a stack overflow?
Christian
On 17.02.26 10:31, Rumen Mitov via users wrote:
Hi,
In my project I am encountering a segfault when trying to allocate with `Genode::Heap` (GDB output is from base-linux):
``` Thread 19 "ld.lib.so" received signal SIGSEGV, Segmentation fault. [Switching to LWP 13744] 0x0000000050019fc8 in Genode::Allocator_avl_base::Block::find_best_fit (this=0x7ffff43efd78, size=8128, align=3, range=...) at /phantomuserland/genode/repos/base/src/lib/base/allocator_avl.cc:28 28 { ```
According to the backtrace (see backtrace.log, if interested), I suspect the `find_best_fit` method is being called in an infinite loop. I was not able to recreate this SEGFAULT in a fresh Genode project, so the issue must be from my project's code.
What's interesting is that the SEGFAULT occurs during a `push %rbx` instruction, so perhaps this is due to stack corruption?
I tried adding `-fsanitize=address` to my compile flags, however during `goa build` I get errors stating that the linker cannot find any references to asan symbols (see build.log). I checked, and I have libasan8 installed.
Is address sanitization supported in Genode projects? If so, how can I compile my project with it?
Best, Rumen
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