| Message ID | 20210603001708.GA55239@embeddedor (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,venus-for-next-v5.14] media: venus: hfi_cmds: Fix packet size calculation | expand |
On Wed, Jun 02, 2021 at 07:17:08PM -0500, Gustavo A. R. Silva wrote: > Now that a one-element array was replaced with a flexible-array member > in struct hfi_sys_set_property_pkt, use the struct_size() helper to > correctly calculate the packet size. > > Fixes: 701e10b3fd9f ("media: venus: hfi_cmds.h: Replace one-element array with flexible-array member") > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks for the update! Reviewed-by: Kees Cook <keescook@chromium.org>
Hi all, Friendly ping: who can take this, please? Thanks -- Gustavo On 6/2/21 19:17, Gustavo A. R. Silva wrote: > Now that a one-element array was replaced with a flexible-array member > in struct hfi_sys_set_property_pkt, use the struct_size() helper to > correctly calculate the packet size. > > Fixes: 701e10b3fd9f ("media: venus: hfi_cmds.h: Replace one-element array with flexible-array member") > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> > --- > Changes in v3: > - Fix size calculation in call to struct_size(). > Link: https://lore.kernel.org/linux-hardening/202106021254.39A1561075@keescook/ > Link: https://lore.kernel.org/linux-hardening/113fd896-464c-6aef-215a-a53ac6103a62@embeddedor.com/ > > Changes in v2: > - Include linux/overflow.h for struct_size(). > > drivers/media/platform/qcom/venus/hfi_cmds.c | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) > > diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c > index 4b9dea7f6940..f51024786991 100644 > --- a/drivers/media/platform/qcom/venus/hfi_cmds.c > +++ b/drivers/media/platform/qcom/venus/hfi_cmds.c > @@ -3,6 +3,7 @@ > * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. > * Copyright (C) 2017 Linaro Ltd. > */ > +#include <linux/overflow.h> > #include <linux/errno.h> > #include <linux/hash.h> > > @@ -27,7 +28,7 @@ void pkt_sys_idle_indicator(struct hfi_sys_set_property_pkt *pkt, u32 enable) > { > struct hfi_enable *hfi = (struct hfi_enable *)&pkt->data[1]; > > - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); > + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); > pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; > pkt->num_properties = 1; > pkt->data[0] = HFI_PROPERTY_SYS_IDLE_INDICATOR; > @@ -39,7 +40,7 @@ void pkt_sys_debug_config(struct hfi_sys_set_property_pkt *pkt, u32 mode, > { > struct hfi_debug_config *hfi; > > - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); > + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); > pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; > pkt->num_properties = 1; > pkt->data[0] = HFI_PROPERTY_SYS_DEBUG_CONFIG; > @@ -50,7 +51,7 @@ void pkt_sys_debug_config(struct hfi_sys_set_property_pkt *pkt, u32 mode, > > void pkt_sys_coverage_config(struct hfi_sys_set_property_pkt *pkt, u32 mode) > { > - pkt->hdr.size = sizeof(*pkt) + sizeof(u32); > + pkt->hdr.size = struct_size(pkt, data, 2); > pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; > pkt->num_properties = 1; > pkt->data[0] = HFI_PROPERTY_SYS_CONFIG_COVERAGE; > @@ -116,7 +117,7 @@ void pkt_sys_power_control(struct hfi_sys_set_property_pkt *pkt, u32 enable) > { > struct hfi_enable *hfi = (struct hfi_enable *)&pkt->data[1]; > > - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); > + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); > pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; > pkt->num_properties = 1; > pkt->data[0] = HFI_PROPERTY_SYS_CODEC_POWER_PLANE_CTRL; >
diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c index 4b9dea7f6940..f51024786991 100644 --- a/drivers/media/platform/qcom/venus/hfi_cmds.c +++ b/drivers/media/platform/qcom/venus/hfi_cmds.c @@ -3,6 +3,7 @@ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. * Copyright (C) 2017 Linaro Ltd. */ +#include <linux/overflow.h> #include <linux/errno.h> #include <linux/hash.h> @@ -27,7 +28,7 @@ void pkt_sys_idle_indicator(struct hfi_sys_set_property_pkt *pkt, u32 enable) { struct hfi_enable *hfi = (struct hfi_enable *)&pkt->data[1]; - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; pkt->num_properties = 1; pkt->data[0] = HFI_PROPERTY_SYS_IDLE_INDICATOR; @@ -39,7 +40,7 @@ void pkt_sys_debug_config(struct hfi_sys_set_property_pkt *pkt, u32 mode, { struct hfi_debug_config *hfi; - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; pkt->num_properties = 1; pkt->data[0] = HFI_PROPERTY_SYS_DEBUG_CONFIG; @@ -50,7 +51,7 @@ void pkt_sys_debug_config(struct hfi_sys_set_property_pkt *pkt, u32 mode, void pkt_sys_coverage_config(struct hfi_sys_set_property_pkt *pkt, u32 mode) { - pkt->hdr.size = sizeof(*pkt) + sizeof(u32); + pkt->hdr.size = struct_size(pkt, data, 2); pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; pkt->num_properties = 1; pkt->data[0] = HFI_PROPERTY_SYS_CONFIG_COVERAGE; @@ -116,7 +117,7 @@ void pkt_sys_power_control(struct hfi_sys_set_property_pkt *pkt, u32 enable) { struct hfi_enable *hfi = (struct hfi_enable *)&pkt->data[1]; - pkt->hdr.size = sizeof(*pkt) + sizeof(*hfi) + sizeof(u32); + pkt->hdr.size = struct_size(pkt, data, 1) + sizeof(*hfi); pkt->hdr.pkt_type = HFI_CMD_SYS_SET_PROPERTY; pkt->num_properties = 1; pkt->data[0] = HFI_PROPERTY_SYS_CODEC_POWER_PLANE_CTRL;
Now that a one-element array was replaced with a flexible-array member in struct hfi_sys_set_property_pkt, use the struct_size() helper to correctly calculate the packet size. Fixes: 701e10b3fd9f ("media: venus: hfi_cmds.h: Replace one-element array with flexible-array member") Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- Changes in v3: - Fix size calculation in call to struct_size(). Link: https://lore.kernel.org/linux-hardening/202106021254.39A1561075@keescook/ Link: https://lore.kernel.org/linux-hardening/113fd896-464c-6aef-215a-a53ac6103a62@embeddedor.com/ Changes in v2: - Include linux/overflow.h for struct_size(). drivers/media/platform/qcom/venus/hfi_cmds.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)