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42d5e37654
Tracefs or debugfs were causing hundreds to thousands of PATH records to be associated with the init_module and finit_module SYSCALL records on a few modules when the following rule was in place for startup: -a always,exit -F arch=x86_64 -S init_module -F key=mod-load Provide a method to ignore these large number of PATH records from overwhelming the logs if they are not of interest. Introduce a new filter list "AUDIT_FILTER_FS", with a new field type AUDIT_FSTYPE, which keys off the filesystem 4-octet hexadecimal magic identifier to filter specific filesystem PATH records. An example rule would look like: -a never,filesystem -F fstype=0x74726163 -F key=ignore_tracefs -a never,filesystem -F fstype=0x64626720 -F key=ignore_debugfs Arguably the better way to address this issue is to disable tracefs and debugfs on boot from production systems. See: https://github.com/linux-audit/audit-kernel/issues/16 See: https://github.com/linux-audit/audit-userspace/issues/8 Test case: https://github.com/linux-audit/audit-testsuite/issues/42 Signed-off-by: Richard Guy Briggs <rgb@redhat.com> [PM: fixed the whitespace damage in kernel/auditsc.c] Signed-off-by: Paul Moore <paul@paul-moore.com> |
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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.