yggdrasil-old/kernel
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix shmem regions not being removed from list (memory corruption)

Browse Source
This commit is contained in:
Mark
2020-04-07 13:41:27 +03:00
parent 636ad966c4
commit 2a8653bb4b
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sys/shmem.c
+8
View File
@@ -62,6 +62,12 @@ uintptr_t shm_region_map(struct shm_region *region, struct thread *thr) {
uintptr_t vaddr = vmfind(thr->space, 0x80000000, 0x100000000, region->page_count);
if (vaddr == MM_NADDR) {
kfree(reg_ref);
kfree(own_ref);
kerror("Could not find memory for mapping\n");
return MM_NADDR;
}
kdebug("-> %p\n", vaddr);
reg_ref->type = SHM_TYPE_PHYS;
@@ -249,6 +255,7 @@ int sys_munmap(void *_addr, size_t length) {
if (!reg->ref_count) {
spin_release_irqrestore(&reg->lock, &irq);
list_del(&reg->link);
shm_region_free(reg);
} else {
spin_release_irqrestore(&reg->lock, &irq);
@@ -353,6 +360,7 @@ void shm_region_release_all(struct thread *thr, int noumap) {
if (!region->ref_count) {
spin_release_irqrestore(&region->lock, &irq);
list_del(&region->link);
shm_region_free(region);
} else {
spin_release_irqrestore(&region->lock, &irq);