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.
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.
John Fastabend
authored
Multiple BPF helpers in use by sk_skb programs calculate the max skb length using the __bpf_skb_max_len function. However, this calculates the max length using the skb->dev pointer which can be NULL when an sk_skb program is paired with an sk_msg program. To force this a sk_msg program needs to redirect into the ingress path of a sock with an attach sk_skb program. Then the the sk_skb program would need to call one of the helpers that adjust the skb size. To fix the null ptr dereference use SKB_MAX_ALLOC size if no dev is available. Fixes: 8934ce2f ("bpf: sockmap redirect ingress support") Signed-off-by:John Fastabend <john.fastabend@gmail.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org>
| Name | Last commit | Last update |
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| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README |