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CodeQL reported that when the VERIFY3U condition is false, we do not pass enough arguments to `spl_panic()`. This is because the format string from `snprintf()` was concatenated into the format string for `spl_panic()`, which causes us to have an unexpected format specifier. A CodeQL developer suggested fixing the macro to have a `%s` format string that takes a stringified RIGHT argument, which would fix this. However, upon inspection, the VERIFY3U check was never necessary in the first place, so we remove it in favor of just calling `snprintf()`. Lastly, it is interesting that every other static analyzer run on the codebase did not catch this, including some that made an effort to catch such things. Presumably, all of them relied on header annotations, which we have not yet done on `spl_panic()`. CodeQL apparently is able to track the flow of arguments on their way to annotated functions, which llowed it to catch this when others did not. A future patch that I have in development should annotate `spl_panic()`, so the others will catch this too. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Closes #14098 |
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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
Installation
Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.
Contribute & Develop
We have a separate document with contribution guidelines.
We have a Code of Conduct.
Release
OpenZFS is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.