RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-10-31 22:02:44 +00:00
Code Issues Activity Actions

Kernel: Change kmalloc lock to be recursive

Browse source 
If the heap code dumps a stack trace (e.g. out of memory) then
it may recursively call into it. Rather than deadlocking, allow
recursion.
This commit is contained in:
Tom 2020-07-02 08:34:11 -06:00 • committed by Andreas Kling
parent 038dd9f30e
commit 3cc0e86cd8
2 changed files with 6 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/Heap/kmalloc.cpp
View file

@ -67,7 +67,7 @@ bool g_dump_kmalloc_stacks;
static u8* s_next_eternal_ptr;
static u8* s_end_of_eternal_range;
static SpinLock s_lock;
static RecursiveSpinLock s_lock; // needs to be recursive because of dump_backtrace()
void kmalloc_init()
{