With CONFIG_INTERMIX_VMALLOC, we can no longer assume all vmalloc
is contained between VMALLOC_START and VMALLOC_END. For code that
relies on operating on the vmalloc space, use
for_each_potential_vmalloc_area to track each area separately.
Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
---
fs/proc/kcore.c | 20 +++++++++++++++-----
1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 5ed0e52..9be81a8 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -585,8 +585,6 @@ static struct notifier_block kcore_callback_nb __meminitdata = {
.priority = 0,
};
-static struct kcore_list kcore_vmalloc;
-
#ifdef CONFIG_ARCH_PROC_KCORE_TEXT
static struct kcore_list kcore_text;
/*
@@ -621,6 +619,11 @@ static void __init add_modules_range(void)
static int __init proc_kcore_init(void)
{
+ struct kcore_list *kcore_vmalloc;
+ unsigned long vstart;
+ unsigned long vend;
+ int i;
+
proc_root_kcore = proc_create("kcore", S_IRUSR, NULL,
&proc_kcore_operations);
if (!proc_root_kcore) {
@@ -629,9 +632,16 @@ static int __init proc_kcore_init(void)
}
/* Store text area if it's special */
proc_kcore_text_init();
- /* Store vmalloc area */
- kclist_add(&kcore_vmalloc, (void *)VMALLOC_START,
- VMALLOC_END - VMALLOC_START, KCORE_VMALLOC);
+ for_each_potential_vmalloc_area(&vstart, &vend, &i) {
+ kcore_vmalloc = kzalloc(sizeof(*kcore_vmalloc), GFP_KERNEL);
+ if (!kcore_vmalloc)
+ return 0;
+
+ /* Store vmalloc area */
+ kclist_add(kcore_vmalloc, (void *)vstart,
+ vend - vstart, KCORE_VMALLOC);
+ }
+
add_modules_range();
/* Store direct-map area from physical memory map */
kcore_update_ram();
--
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