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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-19 09:06:37 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-19 09:06:37 +0100 |
| commit | 36d97cdaf46593330067c34ed3639d0556d4fd6d (patch) | |
| tree | 8f15f5dc52d5c0a045751b8dd20768bd8a11605f /drivers/xen/privcmd.c | |
| parent | 548fcf037b3f8592e9fe41469110453a777416d6 (diff) | |
| parent | b401b621758e46812da61fa58a67c3fd8d91de0d (diff) | |
| download | linux-stable-36d97cdaf46593330067c34ed3639d0556d4fd6d.tar.gz linux-stable-36d97cdaf46593330067c34ed3639d0556d4fd6d.tar.bz2 linux-stable-36d97cdaf46593330067c34ed3639d0556d4fd6d.zip | |
Merge 6.8-rc5 into tty-next
We need the serial/tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/xen/privcmd.c')
| -rw-r--r-- | drivers/xen/privcmd.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 35b6e306026a..67dfa4778864 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -1223,18 +1223,13 @@ struct privcmd_kernel_ioreq *alloc_ioreq(struct privcmd_ioeventfd *ioeventfd) kioreq->ioreq = (struct ioreq *)(page_to_virt(pages[0])); mmap_write_unlock(mm); - size = sizeof(*ports) * kioreq->vcpus; - ports = kzalloc(size, GFP_KERNEL); - if (!ports) { - ret = -ENOMEM; + ports = memdup_array_user(u64_to_user_ptr(ioeventfd->ports), + kioreq->vcpus, sizeof(*ports)); + if (IS_ERR(ports)) { + ret = PTR_ERR(ports); goto error_kfree; } - if (copy_from_user(ports, u64_to_user_ptr(ioeventfd->ports), size)) { - ret = -EFAULT; - goto error_kfree_ports; - } - for (i = 0; i < kioreq->vcpus; i++) { kioreq->ports[i].vcpu = i; kioreq->ports[i].port = ports[i]; @@ -1256,7 +1251,7 @@ struct privcmd_kernel_ioreq *alloc_ioreq(struct privcmd_ioeventfd *ioeventfd) error_unbind: while (--i >= 0) unbind_from_irqhandler(irq_from_evtchn(ports[i]), &kioreq->ports[i]); -error_kfree_ports: + kfree(ports); error_kfree: kfree(kioreq); |