linux/drivers/rpmsg
Kees Cook 08de420a80 rpmsg: glink: Replace strncpy() with strscpy_pad()
The use of strncpy() is considered deprecated for NUL-terminated
strings[1]. Replace strncpy() with strscpy_pad() (as it seems this case
expects the NUL padding to fill the allocation following the flexible
array). This additionally silences a warning seen when building under
-Warray-bounds:

./include/linux/fortify-string.h:38:30: warning: '__builtin_strncpy' offset 24 from the object at '__mptr' is out of the bounds of referenced subobject 'data' with type 'u8[]' {aka 'unsigned char[]'} at offset 24 [-Warray-bounds]
   38 | #define __underlying_strncpy __builtin_strncpy
      |                              ^
./include/linux/fortify-string.h:50:9: note: in expansion of macro '__underlying_strncpy'
   50 |  return __underlying_strncpy(p, q, size);
      |         ^~~~~~~~~~~~~~~~~~~~
drivers/rpmsg/qcom_glink_native.c: In function 'qcom_glink_work':
drivers/rpmsg/qcom_glink_native.c:36:5: note: subobject 'data' declared here
   36 |  u8 data[];
      |     ^~~~

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings

Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-remoteproc@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/lkml/20210728020745.GB35706@embeddedor
Link: https://lore.kernel.org/r/20210818060533.3569517-4-keescook@chromium.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-09-13 10:24:31 -05:00
..
Kconfig rpmsg: Turn name service into a stand alone driver 2020-11-24 10:11:59 -06:00
Makefile rpmsg: Turn name service into a stand alone driver 2020-11-24 10:11:59 -06:00
mtk_rpmsg.c rpmsg: Avoid double-free in mtk_rpmsg_register_device 2020-09-15 03:43:24 +00:00
qcom_glink_native.c rpmsg: glink: Replace strncpy() with strscpy_pad() 2021-09-13 10:24:31 -05:00
qcom_glink_native.h rpmsg: glink: Switch to SPDX license identifier 2018-06-03 17:37:15 -07:00
qcom_glink_rpm.c rpmsg: glink: Switch to SPDX license identifier 2018-06-03 17:37:15 -07:00
qcom_glink_smem.c rpmsg: glink: Set tail pointer to 0 at end of FIFO 2019-10-11 11:34:12 -07:00
qcom_glink_ssr.c rpmsg: glink: add include of header file 2021-01-05 22:22:40 -06:00
qcom_smd.c rpmsg: char: Use rpmsg_sendto to specify the message destination address 2021-03-17 14:16:36 -05:00
rpmsg_char.c rpmsg: char: Return an error if device already open 2021-03-17 14:16:58 -05:00
rpmsg_core.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
rpmsg_internal.h rpmsg: Make rpmsg_{register|unregister}_device() public 2020-11-24 10:11:52 -06:00
rpmsg_ns.c rpmsg: Turn name service into a stand alone driver 2020-11-24 10:11:59 -06:00
virtio_rpmsg_bus.c rpmsg: virtio: Register the rpmsg_char device 2021-03-17 14:16:47 -05:00