Linux kernel modifications for the Kernel Hacking exam
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Historically, dev_ifsioc() uses struct sockaddr as mac address definition, this is why dev_set_mac_address() accepts a struct sockaddr pointer as input but now we have various types of mac addresse whose lengths are up to MAX_ADDR_LEN, longer than struct sockaddr, and saved in dev->addr_len. It is too late to fix dev_ifsioc() due to API compatibility, so just reject those larger than sizeof(struct sockaddr), otherwise we would read and use some random bytes from kernel stack. Fortunately, only a few IPv6 tunnel devices have addr_len larger than sizeof(struct sockaddr) and they don't support ndo_set_mac_addr(). But with team driver, in lb mode, they can still be enslaved to a team master and make its mac addr length as the same. Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.