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Here is the patch set for the 4.17-rc1 merge window. This set represents improvements to the scripts/leaking_addresses.pl script. The major improvement is that with this set applied the script actually runs in a reasonable amount of time (less than a minute on a standard stock Ubuntu user desktop). Also, we have a second maintainer now and a tree hosted on kernel.org We do a few code clean ups. We fix the command help output. Handling of the vsyscall address range is fixed to check the whole range instead of just the start/end addresses. We add support for 5 page table levels (suggested on LKML). We use a system command to get the machine architecture instead of using Perl. Calling this command for every regex comparison is what previously choked the script, caching the result of this call gave the major speed improvement. We add support for scanning 32-bit kernels using the user/kernel memory split. Path skipping code refactored and simplified (meaning easier script configuration). We remove version numbering. We add a variable name to improve readability of a regex and finally we check filenames for leaking addresses. Currently script scans /proc/PID for all PID. With this set applied we only scan for PID==1. It was observed that on an idle system files under /proc/PID are predominantly the same for all processes. Also it was noted that the script does not scan _all_ the kernel since it only scans active processes. Scanning only for PID==1 makes explicit the inherent flaw in the script that the scan is only partial and also speeds things up. Signed-off-by: Tobin C. Harding <me@tobin.cc> -----BEGIN PGP SIGNATURE----- iQIcBAABCgAGBQJayARVAAoJEEC/nkwmnWYHSAAQALETjSg2h16dfAm2OxTvUemm re1zbyzhwxCeVJuBXusMcA0BTwRonmnh6FJhdcOBs0mb1F6bUaKIJpNwU17XKbOj 1ni0SiFBjDQA46E2ek7d1FC4E+1P72GSykDq6N+GmOAattIVn+SxAHv8MokyIyTT 7F1Qd0HOQZEF3UU6YUl3M4JfCdp7jaKxbjjXzJ5vnTvVBkgesx6Ccf5+D04xHXFD Eps7DZbUz646jI84eq+VgM77Uk9YzMCkoh2fEwoqe6o6HwNj5i96ifnCw5uIuopk lq40J7Wc59hK/Cz4rU52G9Ml5P2KY9Uv4CRL9JB/ZYEx+c246NF43ewrX5uzfrsd wXAO8FqcZA99YW8XGWKHC/bToSjbiMPtwx1IRn6sOuOS3l7NN8afpWsLpqPk8ECA ImzugUf82vrhCWGOBzNFFMAIHTN+BM54v+foJOdxAqQVveW+Ze7uBRY2ZIEq7ViT XXgOqDQz7Ub6N0C3cRAqmRc1Yv2n8QGg56uqam5MrMGtz6NrBMROTgafQMRFrf90 q+KfBvr6ofzuTWyfnUL0UXiHKvRmVro8hk/mdeJqqdS6dxng5bMT1ODK7SXlzyZQ Uf6ePo1pN3TpZRUKdwcyDA0+sHNHbXoE/NsC5UuwAnbE5u6m1FuqeqoysVJTKq5d /1IejdG15RYMh8YSYu5L =9BLH -----END PGP SIGNATURE----- Merge tag 'leaks-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks Pull leaking-addresses updates from Tobin Harding: "This set represents improvements to the scripts/leaking_addresses.pl script. The major improvement is that with this set applied the script actually runs in a reasonable amount of time (less than a minute on a standard stock Ubuntu user desktop). Also, we have a second maintainer now and a tree hosted on kernel.org We do a few code clean ups. We fix the command help output. Handling of the vsyscall address range is fixed to check the whole range instead of just the start/end addresses. We add support for 5 page table levels (suggested on LKML). We use a system command to get the machine architecture instead of using Perl. Calling this command for every regex comparison is what previously choked the script, caching the result of this call gave the major speed improvement. We add support for scanning 32-bit kernels using the user/kernel memory split. Path skipping code refactored and simplified (meaning easier script configuration). We remove version numbering. We add a variable name to improve readability of a regex and finally we check filenames for leaking addresses. Currently script scans /proc/PID for all PID. With this set applied we only scan for PID==1. It was observed that on an idle system files under /proc/PID are predominantly the same for all processes. Also it was noted that the script does not scan _all_ the kernel since it only scans active processes. Scanning only for PID==1 makes explicit the inherent flaw in the script that the scan is only partial and also speeds things up" * tag 'leaks-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks: MAINTAINERS: Update LEAKING_ADDRESSES leaking_addresses: check if file name contains address leaking_addresses: explicitly name variable used in regex leaking_addresses: remove version number leaking_addresses: skip '/proc/1/syscall' leaking_addresses: skip all /proc/PID except /proc/1 leaking_addresses: cache architecture name leaking_addresses: simplify path skipping leaking_addresses: do not parse binary files leaking_addresses: add 32-bit support leaking_addresses: add is_arch() wrapper subroutine leaking_addresses: use system command to get arch leaking_addresses: add support for 5 page table levels leaking_addresses: add support for kernel config file leaking_addresses: add range check for vsyscall memory leaking_addresses: indent dependant options leaking_addresses: remove command examples leaking_addresses: remove mention of kptr_restrict leaking_addresses: fix typo function not called |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| 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
============
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.