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check shmid access

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This commit is contained in:
Marcel Lütke Dreimann
2025-08-26 14:19:00 +02:00
parent 2c1866dff4
commit f72d10d279
1 changed files with 15 additions and 1 deletions
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16
repos/dde_uos-intel-gpgpu/src/virt/rpc.cc
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@@ -87,7 +87,21 @@ void Session_component::start_task(unsigned long kconf)
}
else // for pointer set phys addr
{
const Genode::addr_t addrBase = kc->buffConfigs[i].shmid == -1 ? base : SHM_manager::getInstance().getBase(kc->buffConfigs[i].shmid);
const int shmid = kc->buffConfigs[i].shmid;
Genode::addr_t addrBase;
if(shmid == -1) // no shm
{
addrBase = base;
}
else
{
if(!vgpu.hasSHM(shmid)) {
Genode::error("Invalid GPU SHM access: ", shmid);
_global_sched->trigger();
return;
}
addrBase = SHM_manager::getInstance().getBase(shmid);
}
kc->buffConfigs[i].buffer = (void*)((Genode::addr_t)kc->buffConfigs[i].buffer + addrBase);
}
}