The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: e240b0fde52f33670d1336697c22d90a4fe33c84
Gitweb: https://git.kernel.org/tip/e240b0fde52f33670d1336697c22d90a4fe33c84
Author: Sven Schnelle <svens@xxxxxxxxxxxxx>
AuthorDate: Tue, 03 Sep 2024 12:23:12 +02:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Tue, 03 Sep 2024 16:54:02 +02:00
uprobes: Use kzalloc to allocate xol area
To prevent unitialized members, use kzalloc to allocate
the xol area.
Fixes: b059a453b1cf1 ("x86/vdso: Add mremap hook to vm_special_mapping")
Signed-off-by: Sven Schnelle <svens@xxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240903102313.3402529-1-svens@xxxxxxxxxxxxx
---
kernel/events/uprobes.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 73cc477..50d7949 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1489,7 +1489,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
struct xol_area *area;
void *insns;
- area = kmalloc(sizeof(*area), GFP_KERNEL);
+ area = kzalloc(sizeof(*area), GFP_KERNEL);
if (unlikely(!area))
goto out;
@@ -1499,7 +1499,6 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
goto free_area;
area->xol_mapping.name = "[uprobes]";
- area->xol_mapping.fault = NULL;
area->xol_mapping.pages = area->pages;
area->pages[0] = alloc_page(GFP_HIGHUSER);
if (!area->pages[0])
|