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Richard Yao
dd108f5d73
After89cd2197b9was merged, Clang's static analyzer began complaining about a dead assignment in `zfs_fillpage()`. Upon inspection, I noticed that the dead assignment was because we are not using the calculated io_len that we should use to avoid asking the DMU to read past the end of a file. This should result in `dmu_buf_hold_array_by_dnode()` calling `zfs_panic_recover()`. This issue predates89cd2197b9, but its simplification of zfs_fillpage() eliminated the only use of the assignment to io_len, which made Clang's static analyzer complain about the issue. Also, as a precaution, we add an assertion that io_offset < i_size. If this ever fails, bad things will happen. Otherwise, we are blindly trusting the kernel not to give us invalid offsets. We continue to blindly trust it on non-debug kernels. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Closes #14534
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.