a1daa3ae5e
bhyve's NVMe emulation was transferring Identify data back to the guest incorrectly causing memory corruptions. These corruptions resulted in core dumps and other system level errors in the guest. In their simplest form, NVMe Physical Region Page (PRP) values in commands indicate which physical pages to use for data transfer. The first PRP value is not required to be page aligned but does not cross a page boundary. The second PRP value must be page aligned, does not cross a page boundary, and need not be contiguous with PRP1. The code was copying Identify data past the end of PRP1. This happens to work if PRP1 and PRP2 are physically contiguous but will corrupt guest memory in unpredictable ways if they are not. Fix is to copy the Identify data back to the guest piecewise (i.e. for each PRP entry). Also fix a similarly wrong problem when copying back Log page data. Reviewed by: imp (mentor), araujo, jhb, rgrimes, bhyve Approved by: imp (mentor), bhyve (jhb) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D19695 |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README | ||
| README.md | ||
| UPDATING | ||
FreeBSD Source:
This is the top level of the FreeBSD source directory. This file
was last revised on:
FreeBSD
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
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The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.
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include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
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release Release building Makefile & associated tools.
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