I was testing v23.0rc2 compiled.

`./configure --without-miniupnpc --without-natpmp --enable-hardening --without-bdb --with-qrencode --with-zmq --with-sqlite=yes --disable-external-signer`

bitcoin.conf:

> assumevalid=0
> blockfilterindex=1
> coinstatsindex=1
> dbcache=1000
> prune=0
> sandbox=log-and-abort
> txindex=1
> cjdnsreachable=1
> discover=1
> i2psam=127.0.0.1:7656
> listen=1
> listenonion=1
> networkactive=1
> peerblockfilters=1
> proxy=127.0.0.1:9050
> addresstype=bech32m
> avoidpartialspends=1
> changetype=bech32m
> maxapsfee=0.001
> walletrbf=1
> shrinkdebugfile=1

I deleted my data directory (/home/user/.bitcoin) to start a fresh download of the blockchain to test any errors.  Ran out of space, and after deleting more and trying to start bitcoin-qt again:

> ERROR: The syscall "linkat" (syscall number 265) is not allowed by the syscall sandbox in thread "main". Please report.
> terminate called without an active exception
> Aborted

and in debug.log:

> 2022-03-11T13:00:02Z init message: Verifying blocks…
> 2022-03-11T13:00:02Z Verifying last 6 blocks at level 3
> 2022-03-11T13:00:02Z [0%]...[16%]...[33%]...[50%]...[66%]...[83%]...[99%]...[DONE].
> 2022-03-11T13:00:02Z No coin database inconsistencies in last 6 blocks (2938 transactions)
> 2022-03-11T13:00:02Z  block index            4963ms
> 2022-03-11T13:00:02Z Opening LevelDB in /home/user/.bitcoin/indexes/txindex
> 2022-03-11T13:00:02Z Opened LevelDB successfully
> 2022-03-11T13:00:02Z Using obfuscation key for /home/user/.bitcoin/indexes/txindex: 0000000000000000
> 2022-03-11T13:00:02Z Opening LevelDB in /home/user/.bitcoin/indexes/blockfilter/basic/db
> 2022-03-11T13:00:02Z txindex thread start
> 2022-03-11T13:00:02Z txindex is enabled at height 326934
> 2022-03-11T13:00:02Z txindex thread exit
> 2022-03-11T13:00:02Z Opened LevelDB successfully
> 2022-03-11T13:00:02Z Using obfuscation key for /home/user/.bitcoin/indexes/blockfilter/basic/db: 0000000000000000
> 2022-03-11T13:00:02Z Opening LevelDB in /home/user/.bitcoin/indexes/coinstats/db
> 2022-03-11T13:00:02Z basic block filter index thread start
> 2022-03-11T13:00:02Z basic block filter index is enabled at height 326934
> 2022-03-11T13:00:02Z basic block filter index thread exit
> 2022-03-11T13:00:02Z Opened LevelDB successfully
> 2022-03-11T13:00:02Z Using obfuscation key for /home/user/.bitcoin/indexes/coinstats/db: 0000000000000000
> 2022-03-11T13:00:02Z ERROR: Init: Cannot read current coinstatsindex state; index may be corrupted
> 2022-03-11T13:00:02Z Shutdown: In progress...
> 2022-03-11T13:00:02Z scheduler thread exit
> 2022-03-11T13:00:02Z Shutdown: done
> 2022-03-11T13:00:02Z ERROR: The syscall "linkat" (syscall number 265) is not allowed by the syscall sandbox in thread "main". Please report.

This was done on a Qubes 4.0 machine in a Debian 11 VM.
{
    assert(!g_syscall_sandbox_enabled && "SetupSyscallSandbox(...) should only be called once.");
    g_syscall_sandbox_enabled = true;
    g_syscall_sandbox_log_violation_before_terminating = log_syscall_violation_before_terminating;
    if (log_syscall_violation_before_terminating) {
        if (!SetupSyscallSandboxDebugHandler()) {
            return false;
        }
    }
    SetSyscallSandboxPolicy(SyscallSandboxPolicy::INITIALIZATION);
    return true;
}
void TestDisallowedSandboxCall()
{
    
    std::array<gid_t, 1> groups;
    [[maybe_unused]] int32_t ignored = getgroups(groups.size(), groups.data());
}
#endif 
void SetSyscallSandboxPolicy(SyscallSandboxPolicy syscall_policy)
{