diff options
author | Dave Airlie <airlied@redhat.com> | 2023-07-21 12:02:31 +1000 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2023-07-21 12:14:05 +1000 |
commit | f4f19c03cfb99b587cf35ff057be97cb98c5d251 (patch) | |
tree | 0664c11558c76a35afd91b867d11c65eeaac3ebc /drivers/accel | |
parent | 78e9b217d78e9f69c5699ccff18794ea03be597f (diff) | |
parent | ea293f823a8805735d9e00124df81a8f448ed1ae (diff) | |
download | linux-f4f19c03cfb99b587cf35ff057be97cb98c5d251.tar.gz linux-f4f19c03cfb99b587cf35ff057be97cb98c5d251.tar.bz2 linux-f4f19c03cfb99b587cf35ff057be97cb98c5d251.zip |
Merge tag 'drm-misc-fixes-2023-07-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Memory leak fixes in drm/client, memory access/leak fixes for
accel/qaic, another leak fix in dma-buf and three nouveau fixes around
hotplugging.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/fmj5nok7zggux2lcpdtls2iknweba54wfc6o4zxq6i6s3dgi2r@7z3eawwhyhen
Diffstat (limited to 'drivers/accel')
-rw-r--r-- | drivers/accel/qaic/qaic_control.c | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/drivers/accel/qaic/qaic_control.c b/drivers/accel/qaic/qaic_control.c index 5c57f7b4494e..cfbc92da426f 100644 --- a/drivers/accel/qaic/qaic_control.c +++ b/drivers/accel/qaic/qaic_control.c @@ -14,6 +14,7 @@ #include <linux/mm.h> #include <linux/moduleparam.h> #include <linux/mutex.h> +#include <linux/overflow.h> #include <linux/pci.h> #include <linux/scatterlist.h> #include <linux/types.h> @@ -366,7 +367,7 @@ static int encode_passthrough(struct qaic_device *qdev, void *trans, struct wrap if (in_trans->hdr.len % 8 != 0) return -EINVAL; - if (msg_hdr_len + in_trans->hdr.len > QAIC_MANAGE_EXT_MSG_LENGTH) + if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_EXT_MSG_LENGTH) return -ENOSPC; trans_wrapper = add_wrapper(wrappers, @@ -418,9 +419,12 @@ static int find_and_map_user_pages(struct qaic_device *qdev, } ret = get_user_pages_fast(xfer_start_addr, nr_pages, 0, page_list); - if (ret < 0 || ret != nr_pages) { - ret = -EFAULT; + if (ret < 0) goto free_page_list; + if (ret != nr_pages) { + nr_pages = ret; + ret = -EFAULT; + goto put_pages; } sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); @@ -557,11 +561,8 @@ static int encode_dma(struct qaic_device *qdev, void *trans, struct wrapper_list msg = &wrapper->msg; msg_hdr_len = le32_to_cpu(msg->hdr.len); - if (msg_hdr_len > (UINT_MAX - QAIC_MANAGE_EXT_MSG_LENGTH)) - return -EINVAL; - /* There should be enough space to hold at least one ASP entry. */ - if (msg_hdr_len + sizeof(*out_trans) + sizeof(struct wire_addr_size_pair) > + if (size_add(msg_hdr_len, sizeof(*out_trans) + sizeof(struct wire_addr_size_pair)) > QAIC_MANAGE_EXT_MSG_LENGTH) return -ENOMEM; @@ -634,7 +635,7 @@ static int encode_activate(struct qaic_device *qdev, void *trans, struct wrapper msg = &wrapper->msg; msg_hdr_len = le32_to_cpu(msg->hdr.len); - if (msg_hdr_len + sizeof(*out_trans) > QAIC_MANAGE_MAX_MSG_LENGTH) + if (size_add(msg_hdr_len, sizeof(*out_trans)) > QAIC_MANAGE_MAX_MSG_LENGTH) return -ENOSPC; if (!in_trans->queue_size) @@ -718,7 +719,7 @@ static int encode_status(struct qaic_device *qdev, void *trans, struct wrapper_l msg = &wrapper->msg; msg_hdr_len = le32_to_cpu(msg->hdr.len); - if (msg_hdr_len + in_trans->hdr.len > QAIC_MANAGE_MAX_MSG_LENGTH) + if (size_add(msg_hdr_len, in_trans->hdr.len) > QAIC_MANAGE_MAX_MSG_LENGTH) return -ENOSPC; trans_wrapper = add_wrapper(wrappers, sizeof(*trans_wrapper)); @@ -748,7 +749,8 @@ static int encode_message(struct qaic_device *qdev, struct manage_msg *user_msg, int ret; int i; - if (!user_msg->count) { + if (!user_msg->count || + user_msg->len < sizeof(*trans_hdr)) { ret = -EINVAL; goto out; } @@ -765,12 +767,13 @@ static int encode_message(struct qaic_device *qdev, struct manage_msg *user_msg, } for (i = 0; i < user_msg->count; ++i) { - if (user_len >= user_msg->len) { + if (user_len > user_msg->len - sizeof(*trans_hdr)) { ret = -EINVAL; break; } trans_hdr = (struct qaic_manage_trans_hdr *)(user_msg->data + user_len); - if (user_len + trans_hdr->len > user_msg->len) { + if (trans_hdr->len < sizeof(trans_hdr) || + size_add(user_len, trans_hdr->len) > user_msg->len) { ret = -EINVAL; break; } @@ -953,15 +956,23 @@ static int decode_message(struct qaic_device *qdev, struct manage_msg *user_msg, int ret; int i; - if (msg_hdr_len > QAIC_MANAGE_MAX_MSG_LENGTH) + if (msg_hdr_len < sizeof(*trans_hdr) || + msg_hdr_len > QAIC_MANAGE_MAX_MSG_LENGTH) return -EINVAL; user_msg->len = 0; user_msg->count = le32_to_cpu(msg->hdr.count); for (i = 0; i < user_msg->count; ++i) { + u32 hdr_len; + + if (msg_len > msg_hdr_len - sizeof(*trans_hdr)) + return -EINVAL; + trans_hdr = (struct wire_trans_hdr *)(msg->data + msg_len); - if (msg_len + le32_to_cpu(trans_hdr->len) > msg_hdr_len) + hdr_len = le32_to_cpu(trans_hdr->len); + if (hdr_len < sizeof(*trans_hdr) || + size_add(msg_len, hdr_len) > msg_hdr_len) return -EINVAL; switch (le32_to_cpu(trans_hdr->type)) { |