61a14ddfe0
Running the test suite yields: lock order reversal: 1st 0xfffff80004bc6700 unp (unp, sleep mutex) @ sys/kern/uipc_usrreq.c:390 2nd 0xffffffff81a94b30 unp_link_rwlock (unp_link_rwlock, rw) @ sys/kern/uipc_usrreq.c:2934 lock order unp -> unp_link_rwlock attempted at: 0xffffffff80bc216e at witness_checkorder+0xbbe 0xffffffff80b493a5 at _rw_wlock_cookie+0x65 0xffffffff80c0a8e2 at unp_discard+0x22 0xffffffff80c0a888 at unp_freerights+0x38 0xffffffff80c09fdd at unp_scan+0x9d 0xffffffff80c0f9a7 at uipc_sosend_dgram+0x727 0xffffffff80c00a79 at sousrsend+0x79 0xffffffff80c072d0 at kern_sendit+0x1c0 0xffffffff80c074d7 at sendit+0xb7 0xffffffff80c076f3 at sys_sendmsg+0x63 0xffffffff8104d957 at amd64_syscall+0x6b7 0xffffffff8101f9eb at fast_syscall_common+0xf8 This happens when uipc_sosend_dgram() discards a control message because the receive socket buffer is full. The overflow handling frees internalized file references in the socket buffer before freeing mbufs. It does this with socket PCBs locked, leading to the LOR. Defer handling of file references until the PCBs are unlocked. Reviewed by: glebius MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D41884 |
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|---|---|---|
| .cirrus-ci | ||
| .github | ||
| 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 | ||
| .cirrus.yml | ||
| .clang-format | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README.md | ||
| RELNOTES | ||
| UPDATING | ||
FreeBSD Source:
This is the top level of the FreeBSD source directory.
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.
For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.
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), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.
For information on the CPU architectures and platforms supported by FreeBSD, see the FreeBSD website's Platforms page.
Source Roadmap:
| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources (see sys/README.md). |
| targets | Support for experimental DIRDEPS_BUILD |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.