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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-09-03 12:23:12 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-09-03 16:54:02 +0200 |
| commit | e240b0fde52f33670d1336697c22d90a4fe33c84 (patch) | |
| tree | d57a0be6f4f005332cea79f2a79cd92732277ec7 /kernel/events | |
| parent | perf/x86/intel: Limit the period on Haswell (diff) | |
| download | linux-e240b0fde52f33670d1336697c22d90a4fe33c84.tar.xz linux-e240b0fde52f33670d1336697c22d90a4fe33c84.zip | |
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@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903102313.3402529-1-svens@linux.ibm.com
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/uprobes.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 73cc47708679..50d7949be2b1 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]) |