diff options
| author | Sven Schnelle <svens@linux.ibm.com> | 2024-09-03 12:23:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-12 11:03:56 +0200 |
| commit | c6011b495da251f1ee110b5626e2065ea25e45cc (patch) | |
| tree | 7d9e304ddf7f170d31477475bdcf574188953d7f /kernel | |
| parent | 302ac43e58118fd0d9cc8294d8ef669c14294a00 (diff) | |
| download | linux-c6011b495da251f1ee110b5626e2065ea25e45cc.tar.gz linux-c6011b495da251f1ee110b5626e2065ea25e45cc.tar.bz2 linux-c6011b495da251f1ee110b5626e2065ea25e45cc.zip | |
uprobes: Use kzalloc to allocate xol area
commit e240b0fde52f33670d1336697c22d90a4fe33c84 upstream.
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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -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 1799427a384a..c812575f0461 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1491,7 +1491,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr) uprobe_opcode_t insn = UPROBE_SWBP_INSN; struct xol_area *area; - area = kmalloc(sizeof(*area), GFP_KERNEL); + area = kzalloc(sizeof(*area), GFP_KERNEL); if (unlikely(!area)) goto out; @@ -1501,7 +1501,6 @@ 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]) |