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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-09-03 12:23:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-12 11:11:42 +0200 |
| commit | 9faed52b98e11fb2638b6d252f1a0d7fd7de691f (patch) | |
| tree | 70267102dfadb65dc1a71f0c56551e0b7de6e24e /kernel | |
| parent | 7eeb7189c4d4b258fc80435a98181735e710f02f (diff) | |
| download | linux-9faed52b98e11fb2638b6d252f1a0d7fd7de691f.tar.gz linux-9faed52b98e11fb2638b6d252f1a0d7fd7de691f.tar.bz2 linux-9faed52b98e11fb2638b6d252f1a0d7fd7de691f.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 3048589e2e85..4705571f8034 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1480,7 +1480,7 @@ 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; @@ -1490,7 +1490,6 @@ 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]) |