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Fix single-VMA chunk range conflict due to mremap locking order

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Hui, Chunyang 2022-04-14 03:38:55 +00:00 committed by volcano
parent fbde30d1c3
commit 70dbf84782
1 changed files with 2 additions and 1 deletions
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3
src/libos/src/vm/vm_manager.rs
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@ -424,8 +424,9 @@ impl VMManager {
// Try merging all connecting chunks
{
let mut merged_vmas = current.vm().merge_all_single_vma_chunks()?;
// Must lock the internal manager first here in case the chunk's range and vma are conflict when other threads are operating the VM
let mut internal_manager = self.internal.lock().unwrap();
let mut merged_vmas = current.vm().merge_all_single_vma_chunks()?;
while merged_vmas.len() != 0 {
let merged_vma = merged_vmas.pop().unwrap();
internal_manager.add_new_chunk(&current, merged_vma);