Download/kernel/rhel6/042stab057.1

Warning: this is an old version of RHEL6 kernel. For the latest version, see Download/kernel/rhel6/042stab145.3.

Kernel branch RHEL6
Based on	RHEL6 2.6.32
Status	stable, maintained
End Of Life	Nov 2019
Latest	042stab145.3
Archives	RHEL6

Changes

Since 042stab055.16:

• Rebase to RHEL6.2 kernel-2.6.32-220.23.1.el6 kernel (security and bug fixes, see below)
• Note that CONFIG_OPENVSWITCH is not set in this kernel
• [cpt] cleanup: unneeded check for PF_EXIT_RESTART removed (#2266)
• [fuse] fuse_get_context()->pid has been virtualized (#2245)
• [fuse] [major] kaio support has been added
• [ext4] [major, performance] possibility to submit big BIOs has been added (PCLIN-30841)
  • enabled by default, disable by setting /sys/fs/ext4/features/batched_writeback to 0.
• [ext4] fdatasync optimization feature switch has been added (PSBM-12094)
  • disable by setting /sys/fs/ext4/features/optimize_fsync to 0
• [sysrq] add sysrq-a, move sched-debug from sysrq-t to it
• [sysctl] Add kernel.hung_task_verbosity sysctl (see /proc/sys/kernel/hung_task_verbosity)
• [ipc] allow mqueue fs to be mounted in container
• [bridge] put brmark check code under CONFIG_BRIDGE
• [cpt] check/fix negative hrtimer expires on nanosleep futex_wait rst
• [fuse] show active requests, open files, connection info in fusectl files
• [fuse] fix handling IO errors
• [fuse] don't leave a page locked in case of write_being error
• [sched] make CONFIG_DEBUG_SPINLOCK_SLEEP work with CONFIG_PREEMPT off
• [ploop] fix handling preallocated space on truncate (PSBM-13082, PSBM-13083)
• [ploop] avoid overflow of 'long' in ploop_bd_full (#2249)
• [ploop] update modify time if ploop image is mounted rw (PSBM-12847)
• [netdev] simplify dev_hard_start_xmit (PSBM-11782)
• [uevent] send events in correct order according to seqnum (PSBM-11728)
• [ext4] memory leak of biovecs has been fixed (PSBM-13208)
• [ubc] UB maxvalue is shown as "inf" now instead of "9223372036854775807" (on Alt+SysRQ+m)
• [ubc] a lot of internal enhancements/rework in ubc and memory reclaimer code
• [ubc/debug] total count of pruned dentries is shown in /proc/bc/id/debug:dcache_pruned
• [ubc] empty/non-regular shmem inodes are accounted into kmemsize as well (debug for PCLIN-30869)
• [ploop] free blocks discard has been optimized to remove large extents only in case it's enough for freeing asked amount of disk
• [ext4] additional sanity checks has been added to prevent crash on a corrupted fs (PSBM-12241)
• [vzwdog] vzwdog prints now max sched and alloc latencies additionally for the whole sleep period
• [cpt] correct traced processes handling behavior during the checkpoint (PSBM-13065)
• [cpt] correct vzctl hang in case "init" process has died during the restore process (PCLIN-30886)
• [fuse] pending requests queue is flushed at the very end now to make sure it will stay empty
• [fuse] support for file holes in case of writeback enabled has been added (PSBM-13216)
• [fuse] API for userspace reconnecting has been added
• [fairsched] make processes be able to set realtime priority in CT0, this makes pltp testcase happy (PCLIN-29945)
• [ploop] prohibit ploop mounting over ext3, only support ext4 (#2277, PSBM-13225)
• [perf/debug] perf tool is now able to collect D-state statistics (PCLIN-30022)
• [kmemleak/debug] make kmemleak be able to work with our kernel (kmemleak is available in debug kernels only)
• [cfq] kernel BUG at block/cfq-iosched.c:386 has been fixed (PCLIN-30890)
• [fuse] added possibility to disable fuse O_DIRECT with help of fs.fuse_ext_caps sysctl (enabled by default) (debug for PSBM-13075)
• [fuse] flush writeback data on file close. In particular this fixes checkpointing (PSBM-13226)
• [fuse] several other bugfixes
• [quota] remounting of FS with quota on ploop could crash host (PSBM-13231)
• [fs/writeback] writeback writer throttler algorithm has been enhanced
• [mount namespaces] mount namespaces support for has been added. This is required for Fedora 17 (PSBM-13004). Note: online migration support has not been added yet
• [cpt] kernel BUG at kernel/cpt/rst_socket.c:407 (on a self-connected socket restore) fixed (PSBM-13367)
• [cpt] sleep-in-atomic at dumping cgroup has been fixes (PSBM-13297)
• [cpt] timerfs irq-safe locking has been fixed
• [cpt] false positive error messages "_rst_get_object: wrong object type" has been fixed (PSBM-13303)
• [fuse] "fs.fuse_ext_caps" sysctl has been removed. Now we need to provide fuse mount options to enable features:
  • "writeback_enable" mount option to enable writeback for fuse mount
  • "direct_enable" mount option to enable direct IO for fuse mount
• [fuse] show writeback and dio options in proc
• [fuse] file release should make sure writeback is finished
• [iov_iter] direct_IO_page interface has been added. Required for efficient fuse io_kaio (PSBM-12830)
• [oom] oom reports now the current fuse writeback pages counter
• [time] CT uptime is calculated incorrectly in cases like host suspend (PCLIN-30011)
• [fairsched] accuracy of idle/iowait time stats reported through /proc/stat has been increased (PCLIN-30724)
• [fairsched] context switch latency on an almost idle node has been significantly decreased (PSBM-11477)
• [ploop] support for 'expanded' format to io_kaio, support for snapshot, merge and pcopy (migrate) operations has been added (PSBM-12830)
• [ploop] we support only ploop over NFS v3 => ploop mount over NFSv4 has been prohibited (PSBM-13376)
• [ploop] ploop balloon discard could ignore errors and hang (PSBM-13290)
• [ovs/ipv6] kernel ABI has been restored, hypervisor modules should compile fine now (PSBM-13383)
• [ploop] disable ENOSPC checks for preallocated and raw images
• [blkcg] allocate per-cpu statistics from worker thread
• [ipv6] change neighbour table hash for ipv6
• [ext4/xfs] warnings were added to detect a situation when direct reclaim tries to write writeback pages
• [block] sleep while atomic has been fixed (bug introduced in 56.8 kernel)
• [mm] several enhancements on direct reclaim and writeback joint work
• [cpt] CT restore could hang in case of any cpt error handling (PSBM-13440)
• [cpt] deleted /dev/zero file handling has been enhanced during cpt, fixing migration failures on recent kernels. (PSBM-13440)
• [cpt] mount namespaces (for Fedora 17) checkpoint/restore support has been added (PSBM-13004)
• [scheduler] idle time stat reported by /proc/stat has been corrected (PCLIN-30773)
• [scheduler] scheduler bug report has been corrected to print proper calltrace
• [ipv6] deadlock on network interface shutdown fixed (PSBM-13449)
• [watchdog] prohibit access to hardware watchdog devices from inside CTs (#2286)
• [mm] BUG_ON on freeing a writeback page has been fixed (PSBM-13075)
• [fuse] some fairness in handling writeback has been added (PSBM-13465)
• [mm] dirty pages reclaim process now can be interrupted by SIGKILL to appropriate process. This will help in case the underlying fs is stuck. (PSBM-13566)
• [cgroups] locking order has been corrected => deadlock has been fixed (PSBM-13297, #2278)
• [cpt/mqueue/Fedora17] mqueue fs mount inside a CT has been enabled, this fs is needed for Fedora 17. Online migration of a Fedora 17 CT with _empty_ mqueue fs mounted is supported (at the moment we do not know who uses mqueue fs in real life). If mqueue mount is not empty - the online migration fails (PSBM-13213)
• [cpt] a kernel panic has been fixed
• [fuse] fuse_flush() must wait till writeback is completed (PSBM-13697)
• [fuse] synchronous close has been reimplemented
• [fuse] file size handling has been corrected (PSBM-13216)
• [ubc/net] potential infinite loop fixed in case network code
• [pid namespaces] missing BSD_PROCESS_ACCT ifdef added. Required to compile kernel without CONFIG_BSD_PROCESS_ACCT kernel option (#2273)
• [fairsched] vmstat floating point operation fixed: idle scaling has been enhanced once again (PCLIN-30773)
• [scheduler] idle time should not be accounted on "possible" but offline cpus
• [mm] fix a corner case in memory reclaimer - guarantee to invoke OOM in case of no progress (PCLIN-30976)
• [cpt] Fedora 17 CTs should not migrate to older kernels without mount namespaces support, other CTs should migrate fine (PSBM-13534)
• [cpt] allow migration of tasks with SCHED_IDLE or SCHED_BATCH scheduler policy set (#2283)
• [fuse] PCS special files i_size handling has been fixed in case writeback is enabled (PSBM-13636)
• [pfcache] lockdep false-positive report fixed. The report is false-positive only in case we do not enable pfcache for pfcache cache.
• [scheduler] compilation without CONFIG_SCHEDSTATS config option fixed (#2299)

See also

• RHSA-2012:0571
• RHSA-2012:0743

RPMS

x86 (i686, IA32)

File	Date	Size
vzkernel-2.6.32-042stab057.1.i686.rpm	2012-06-26 17:47:22	24 Mb
vzkernel-devel-2.6.32-042stab057.1.i686.rpm	2012-06-26 17:47:26	7 Mb
vzkernel-headers-2.6.32-042stab057.1.i686.rpm	2012-06-26 17:47:27	2 Mb
vzkernel-firmware-2.6.32-042stab057.1.noarch.rpm	2012-06-26 17:47:27	7 Mb

x86_64 (AMD64, EM64T)

File	Date	Size
vzkernel-2.6.32-042stab057.1.x86_64.rpm	2012-06-26 17:47:25	26 Mb
vzkernel-devel-2.6.32-042stab057.1.x86_64.rpm	2012-06-26 17:47:26	7 Mb
vzkernel-headers-2.6.32-042stab057.1.x86_64.rpm	2012-06-26 17:47:27	2 Mb
vzkernel-firmware-2.6.32-042stab057.1.noarch.rpm	2012-06-26 17:47:27	7 Mb

Source RPM

File	Date	Size
vzkernel-2.6.32-042stab057.1.src.rpm	2012-06-26 17:47:24	76 Mb
kernel.spec	2012-06-26 17:44:15	1 Mb

Kernel patch

This patch is applicable to vanilla Linux 2.6.32 kernel (not to 2.6.32.y), available from kernel.org.

File	Date	Size
patch-042stab057.1-combined.gz (signature)	2012-06-26 17:46:43	24 Mb

Configs

Official configs of this OpenVZ kernel used to build binary RPMS.

File	Date	Size
config-2.6.32-042stab057.1.i686	2012-06-26 17:47:04	104 Kb
config-2.6.32-042stab057.1.x86_64	2012-06-26 17:47:12	99 Kb

Archives

For other rhel6 kernel releases, see download/kernel/rhel6/Archives.

For other kernel branches, see download/kernel.

Kernel branches
Stable	Testing / Beta	Old
RHEL6	RHEL6 testing	RHEL5 • RHEL4 • 2.6.32 • 2.6.27 • 2.6.26 • 2.6.24 • 2.6.22 • 2.6.20 • 2.6.18 • 2.6.16 • FC5 • SLES10 • 2.6.8
Versions of rhel6 kernel
042stab145.3 042stab144.1 042stab142.1 042stab141.3 042stab140.4 042stab140.1 042stab139.1 042stab138.1 042stab137.1 042stab136.1 042stab134.8 042stab134.7 042stab134.3 042stab133.2 042stab133.1 042stab132.1 042stab131.1 042stab130.1 042stab129.1 042stab128.2 042stab127.2 042stab126.2 042stab126.1 042stab125.5 042stab125.3 042stab125.1 042stab124.2 042stab123.9 042stab123.8 042stab123.6 042stab123.4 042stab123.3 042stab123.2 042stab123.1 042stab120.20 042stab120.19 042stab120.18 042stab120.16 042stab120.11 042stab120.6 042stab120.5 042stab120.3 042stab120.2 042stab117.16 042stab117.14 042stab116.2 042stab116.1 042stab113.21 042stab113.17 042stab113.11 042stab112.15 042stab111.12 042stab111.11 042stab108.8 042stab108.7 042stab108.6 042stab108.5 042stab108.2 042stab108.1 042stab106.6 042stab106.4 042stab105.14 042stab104.1 042stab103.6 042stab102.9 042stab094.8 042stab094.7 042stab093.5 042stab093.4 042stab092.3 042stab092.2 042stab092.1 042stab090.5 042stab090.4 042stab090.3 042stab090.2 042stab088.4 042stab085.20 042stab085.17 042stab084.26 042stab084.25 042stab084.20 042stab084.17 042stab084.14 042stab084.12 042stab083.2 042stab081.8 042stab081.5 042stab081.3 042stab079.6 042stab079.5 042stab079.4 042stab078.28 042stab078.27 042stab078.26 042stab078.22 042stab076.8 042stab076.7 042stab076.5 042stab075.2 042stab074.10 042stab072.10 042stab068.8 042stab065.3 042stab063.2 042stab062.2 042stab061.2 042stab059.7 042stab057.1 042stab055.16 042stab055.12 042stab055.10 042stab053.5 042stab049.7 042stab049.6 042stab044.17 042stab044.11 042stab039.11 042stab039.10 042stab037.1