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devobj: fix memory leak for device file mapping

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This commit is contained in:
Balazs Gerofi
2016-08-16 14:17:59 +09:00
parent f584e2ec25
commit 4410e702d9
1 changed files with 3 additions and 1 deletions
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4
kernel/devobj.c
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@ -166,6 +166,8 @@ static void devobj_release(struct memobj *memobj)
struct devobj *obj = to_devobj(memobj); struct devobj *obj = to_devobj(memobj);
struct devobj *free_obj = NULL; struct devobj *free_obj = NULL;
uintptr_t handle; uintptr_t handle;
const size_t pfn_npages =
(obj->npages / (PAGE_SIZE / sizeof(uintptr_t))) + 1;
dkprintf("devobj_release(%p %lx)\n", obj, obj->handle); dkprintf("devobj_release(%p %lx)\n", obj, obj->handle);
@ -194,7 +196,7 @@ static void devobj_release(struct memobj *memobj)
} }
if (obj->pfn_table) { if (obj->pfn_table) {
free_pages(obj->pfn_table, 1); free_pages(obj->pfn_table, pfn_npages);
} }
kfree(free_obj); kfree(free_obj);
} }