RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 23:27:36 +00:00
Code Issues Activity Actions

Kernel: Fail with ENOMEM if there's insufficient VM for a SharedBuffer

Browse source
This commit is contained in:
Andreas Kling 2020-02-24 13:33:10 +01:00
parent 30a8991dbf
commit cb9d9846e0
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/SharedBuffer.cpp
View file

@ -88,6 +88,8 @@ void* SharedBuffer::ref_for_process_and_get_address(Process& process)
if (ref.pid == process.pid()) { if (ref.pid == process.pid()) {
if (!ref.region) { if (!ref.region) {
auto* region = process.allocate_region_with_vmobject(VirtualAddress(), size(), m_vmobject, 0, "SharedBuffer", PROT_READ | (m_writable ? PROT_WRITE : 0)); auto* region = process.allocate_region_with_vmobject(VirtualAddress(), size(), m_vmobject, 0, "SharedBuffer", PROT_READ | (m_writable ? PROT_WRITE : 0));
if (!region)
return (void*)-ENOMEM;
ref.region = region->make_weak_ptr(); ref.region = region->make_weak_ptr();
ref.region->set_shared(true); ref.region->set_shared(true);
} }