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nvme fixes for Linux 6.3

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- mark Lexar NM760 as IGNORE_DEV_SUBNQN (Juraj Pecigos)
  - fix a possible UAF when failing to allocate an TCP io queue
    (Sagi Grimberg)
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Merge tag 'nvme-6.3-2023-03-31' of git://git.infradead.org/nvme into block-6.3

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 6.3

 - mark Lexar NM760 as IGNORE_DEV_SUBNQN (Juraj Pecigos)
 - fix a possible UAF when failing to allocate an TCP io queue
   (Sagi Grimberg)"

* tag 'nvme-6.3-2023-03-31' of git://git.infradead.org/nvme:
  nvme-tcp: fix a possible UAF when failing to allocate an io queue
  nvme-pci: mark Lexar NM760 as IGNORE_DEV_SUBNQN
This commit is contained in:
Jens Axboe 2023-03-30 16:39:04 -06:00
commit 1a06ed2d42
2 changed files with 28 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/nvme/host/pci.c
View File

@ -3441,7 +3441,8 @@ static const struct pci_device_id nvme_id_table[] = {
{ PCI_DEVICE(0x1d97, 0x1d97), /* Lexar NM620 */
.driver_data = NVME_QUIRK_BOGUS_NID, },
{ PCI_DEVICE(0x1d97, 0x2269), /* Lexar NM760 */
.driver_data = NVME_QUIRK_BOGUS_NID, },
.driver_data = NVME_QUIRK_BOGUS_NID |
NVME_QUIRK_IGNORE_DEV_SUBNQN, },
{ PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0x0061),
.driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, },
{ PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0x0065),

46
drivers/nvme/host/tcp.c
View File

@ -1620,22 +1620,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, int qid)
if (ret)
goto err_init_connect;
queue->rd_enabled = true;
set_bit(NVME_TCP_Q_ALLOCATED, &queue->flags);
nvme_tcp_init_recv_ctx(queue);
write_lock_bh(&queue->sock->sk->sk_callback_lock);
queue->sock->sk->sk_user_data = queue;
queue->state_change = queue->sock->sk->sk_state_change;
queue->data_ready = queue->sock->sk->sk_data_ready;
queue->write_space = queue->sock->sk->sk_write_space;
queue->sock->sk->sk_data_ready = nvme_tcp_data_ready;
queue->sock->sk->sk_state_change = nvme_tcp_state_change;
queue->sock->sk->sk_write_space = nvme_tcp_write_space;
#ifdef CONFIG_NET_RX_BUSY_POLL
queue->sock->sk->sk_ll_usec = 1;
#endif
write_unlock_bh(&queue->sock->sk->sk_callback_lock);
return 0;
@ -1655,7 +1640,7 @@ err_destroy_mutex:
return ret;
}
static void nvme_tcp_restore_sock_calls(struct nvme_tcp_queue *queue)
static void nvme_tcp_restore_sock_ops(struct nvme_tcp_queue *queue)
{
struct socket *sock = queue->sock;
@ -1670,7 +1655,7 @@ static void nvme_tcp_restore_sock_calls(struct nvme_tcp_queue *queue)
static void __nvme_tcp_stop_queue(struct nvme_tcp_queue *queue)
{
kernel_sock_shutdown(queue->sock, SHUT_RDWR);
nvme_tcp_restore_sock_calls(queue);
nvme_tcp_restore_sock_ops(queue);
cancel_work_sync(&queue->io_work);
}
@ -1688,21 +1673,42 @@ static void nvme_tcp_stop_queue(struct nvme_ctrl *nctrl, int qid)
mutex_unlock(&queue->queue_lock);
}
static void nvme_tcp_setup_sock_ops(struct nvme_tcp_queue *queue)
{
write_lock_bh(&queue->sock->sk->sk_callback_lock);
queue->sock->sk->sk_user_data = queue;
queue->state_change = queue->sock->sk->sk_state_change;
queue->data_ready = queue->sock->sk->sk_data_ready;
queue->write_space = queue->sock->sk->sk_write_space;
queue->sock->sk->sk_data_ready = nvme_tcp_data_ready;
queue->sock->sk->sk_state_change = nvme_tcp_state_change;
queue->sock->sk->sk_write_space = nvme_tcp_write_space;
#ifdef CONFIG_NET_RX_BUSY_POLL
queue->sock->sk->sk_ll_usec = 1;
#endif
write_unlock_bh(&queue->sock->sk->sk_callback_lock);
}
static int nvme_tcp_start_queue(struct nvme_ctrl *nctrl, int idx)
{
struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
struct nvme_tcp_queue *queue = &ctrl->queues[idx];
int ret;
queue->rd_enabled = true;
nvme_tcp_init_recv_ctx(queue);
nvme_tcp_setup_sock_ops(queue);
if (idx)
ret = nvmf_connect_io_queue(nctrl, idx);
else
ret = nvmf_connect_admin_queue(nctrl);
if (!ret) {
set_bit(NVME_TCP_Q_LIVE, &ctrl->queues[idx].flags);
set_bit(NVME_TCP_Q_LIVE, &queue->flags);
} else {
if (test_bit(NVME_TCP_Q_ALLOCATED, &ctrl->queues[idx].flags))
__nvme_tcp_stop_queue(&ctrl->queues[idx]);
if (test_bit(NVME_TCP_Q_ALLOCATED, &queue->flags))
__nvme_tcp_stop_queue(queue);
dev_err(nctrl->device,
"failed to connect queue: %d ret=%d\n", idx, ret);
}