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0e28790195
The Smatch checker flags svdm_version being uninitialized for Discover
Identity Messages within tcpm_pd_svdm for the CMDT_INIT case. Cable plugs
cannot initialize SVDM commands, however a port partner that isn't allowed
to communicate over SOP' could, which would result in the CMDT_INIT block
running for a received SOP' message.
First, initialize svdm_version for the TCPC_TX_SOP_PRIME case. If the
svdm_version returns as an error, we expect the received svdm to be the
result of Discover Identity that updates the value accordingly.
Next, drop all SOP' messages of type CMDT_INIT within tcpm_pd_svdm.
Finally, remove redundant call that assigns modep and pdev. Smatch will
raise an uninitialized symbol error over modep_prime and pdev_prime, but
both the assignment and use of these variables are guarded behind
a check for rx_sop_type == TCPC_TX_SOP_PRIME.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/a432603b-b801-4001-b309-247dded707d3@moroto.mountain/
Fixes:
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|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.