src-test2/sys, branch release/9.2.0

Update releng/9.2 to -RELEASE status as part of the 9.2-RELEASE

2013-09-26T18:10:19Z

process. Approved by: re (implicit) Sponsored by: The FreeBSD Foundation

Update releng/9.2 to -RC4.

2013-09-11T00:42:50Z

Approved by: re (implicit)

Reintegrate r250907 (previously reverted as r254754) plus MFS r254947,

2013-09-10T19:00:32Z

r255443: r250907 (scottl): MFC r248830, r250027, r250409: Several fixes and improvements to sendfile() r254947 (kib): NFS implementation of VOP_READ() sometimes upgrades the vnode lock, which causes drop of the shared lock and sleep for exclusive. As result, busying of the page before the call to vn_rdwr() makes NFS code to wait for vnode lock while page is busy, which contradicts the proper order of vnode lock -> busy. r255443 (des): Fix the length calculation for the final block of a sendfile(2) transmission which could be tricked into rounding up to the nearest page size, leaking up to a page of kernel memory. [13:11] Approved by: re (delphij) Sponsored by: The FreeBSD Foundation

In IPv6 and NetATM, stop SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR

2013-09-10T10:08:20Z

and SIOCSIFNETMASK at the socket layer rather than pass them on to the link layer without validation or credential checks. [SA-13:12] Prevent cross-mount hardlinks between different nullfs mounts of the same underlying filesystem. [SA-13:13] Security: CVE-2013-5691 Security: FreeBSD-SA-13:12.ifioctl Security: CVE-2013-5710 Security: FreeBSD-SA-13:13.nullfs Approved by: re

MFS r255435: MFC r255320:

2013-09-10T01:38:41Z

Return BUS_PROBE_DEFAULT instead of BUS_PROBE_SPECIFIC. Approved by: re (hrs)

MFS of 255104:

2013-09-05T04:00:48Z

MFC of 253998: This bug fix is in a code path in rename taken when there is a collision between a rename and an open system call for the same target file. Here, rename releases its vnode references, waits for the open to finish, and then restarts by reacquiring its needed vnode locks. In this case, rename was unlocking but failing to release its reference to one of its held vnodes. The effect was that even after all the actual references to the vnode had gone, the vnode still showed active references. For files that had been removed, their space was not reclaimed until the filesystem was forcibly unmounted. This bug manifested itself in the Postgres server which would leak/lose hundreds of files per day amounting to many gigabytes of disk space. This bug required shutting down Postgres, forcibly unmounting its filesystem, remounting its filesystem and restarting Postgres every few days to recover the lost space. Reported by: Dan Thomas and Palle Girgensohn Bug-fix by: kib Tested by: Dan Thomas and Palle Girgensohn Approved by: re@ (Marius Strobl )

MFS9 r254953, itself an MFC of r254942 and r254952:

2013-08-29T15:29:48Z

Make alternate layout ``opt-in'' and add support for named releases. Minor edit to version.4th(8) manual and stack-leak fixes while here. Approved by: re (gjb)

Update releng/9.2 to -RC3.

2013-08-24T16:17:33Z

Approved by: re (implicit)

Default net.inet.tcp.experimental.initcwnd10 to 0 in releng/9.2.

2013-08-24T15:09:05Z

Concerns have been raised regarding enabling initcwnd10 by default in the stable/ branch, so as a cautionary measure, turn this off for the 9.2-RELEASE. This sysctl is still available for those who want to enable this on their own systems. This is a direct commit to releng/9.2. Discussed with: re Approved by: re (marius)

Revert r250907 from releng/9.2:

2013-08-24T00:26:15Z

Reports of NFS deadlocks on -stable@ suggest that reverting this change resolves the problem. This is a direct reverse-merge to releng/9.2, pending further review and analysis on the stable/9 branch. Approved by: re (marius) Discussed on: stable