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Richard Yao
4d9bb5514c
Clang's static analyzer informs us of multiple NULL pointer dereferences involving zio_checksum_error_impl(). The first is a NULL pointer dereference if bp is NULL and ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED is false, but bp is NULL implies that ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED is true, so we add an IMPLY() statement to suppress the report. The second and third are identical, and are duplicated because while the NULL pointer dereference occurs in zio_checksum_gang_verifier(), it is called by zio_checksum_error_impl() and there is a report for each of the two functions. The reports state that when bp is NULL, ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED is true and checksum is not ZIO_CHECKSUM_LABEL, we also have a NULL pointer dereference. bp is NULL should imply that checksum == ZIO_CHECKSUM_LABEL, so we add an IMPLY() statement to suppress the second report. The two reports are functionally identical. A fourth variation of this was also reported by Coverity. It occurs when checksum == ZIO_CHECKSUM_ZILOG2. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reported-by: Coverity (CID-1524672) Closes #14470
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.