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0d7df906a0
Harmless from kernel point of view, but again iptables assumes that this is true when decoding ruleset coming from kernel. If a (syzkaller generated) ruleset doesn't have the underflow/policy stored as the last rule in the base chain, then iptables will abort() because it doesn't find the chain policy. libiptc assumes that the policy is the last rule in the basechain, which is only true for iptables-generated rulesets. Unfortunately this needs code duplication -- the functions need the struct layout of the rule head, but that is different for ip/ip6/arptables. NB: pr_warn could be pr_debug but in case this break rulesets somehow its useful to know why blob was rejected. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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| 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.