[LU-7196] Kernel update for RHEL6.7 [2.6.32-573.7.1.el6]

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Bob Glossman (Inactive)

Description

• When logging in as a user and trying to mount a share using the "cd" command,
  the UID and GID autofs additional variables previously took incorrect values,
  taking root UID and GID instead of user's UID and GID. The bug in the assignment
  of uid and gid mount requests has been fixed, and UID and GID now get the
  correct values with autofs configuration on Red Hat Enterprise Linux 6.7.
  (BZ#1258581)

• Previously, the attach_task_by_pid() function in some cases raced with the
  exiting thread and tried to lock or unlock the already freed group_rwsem member
  of the signal_struct list. As a consequence, a kernel crash could occur. This
  update adds the cgroup_threadgroup_rwsem variable, which fixes this bug and
  prevents the kernel crash from occurring in this scenario. (BZ#1246081)

• Previously, the vmxnet3 driver napi poll implementation used rx descriptor
  count for the napi poll budget. This allowed to return from napi poll halfway
  through recieving a fragmented packet if the budget threshold was reached. This
  behavior caused a kernel panic(BUG_ON) if previous napi poll ended with skb
  allocation failure and the end of packet was not reached. This bug has been
  fixed by only counting whole received packets in the napi poll rather than the
  rx descriptor count. As a result, the aforementioned kernel panic no longer
  occurs. (BZ#1246092)

• Due to the renaming of the VLAN_GROUP_ARRAY_LEN preprocessor macro, the kernel
  API for 3rd party modules changed in an incompatible way. As a consequence,
  compiling the vmxnet3 driver in vmware-tools failed. This update adds a
  definition of the VLAN_GROUP_ARRAY_LEN macro, and vmxnet3 now succeeds to
  compile. (BZ#1242145)

• Due to the incorrect length of the FCP_RSP_INFO field, parts of the field
  could be copied, and "st" and "sg" drivers thus did not work correctly. With
  this update, the FCP protocol related code has been updated, and "st" and "sg"
  now work as expected. (BZ#1253728)

• Previously, driving the crypto adapter under high pressure workload with long
  running cryptographic requests led to performance degradations of the crypto
  adapter or, in some cases, the crypto adapter entered recovery mode. As a
  consequence, an Adjunct Processor (AP) queue reset was triggered to recover and
  reinitialize the AP queue. Due to the different hardware behavior, the reset
  could be delayed and interrupts were not re-enabled. With this update, the RAPQ
  (queue reset) and AQIC (interrupt control) commands are treated fully
  asynchronously, and the device driver checks the reset and interrupt states so
  that it can handle the AP queue reinitialization properly. (BZ#1253729)

• Prior to this update, multiple instances trying to copy the same file
  triggered a race condition in the perf buildid-cache that could truncate system
  libraries and other files. With this update, unique temporary files are used
  when copying to the buildid directory to prevent the aforementioned race
  condition from occurring. (BZ#1253733)

• If a bonding VLAN interface entered promiscuous mode while it was inactive,
  the slave interfaces previously did not enter promiscuous mode automatically
  even after the bonding VLAN interface became active again. With this update, the
  flag changes are always propagated to interfaces, and slave interfaces thus
  enter promiscuous mode as expected. (BZ#1253734)

Comments

[Joseph Gmitter (Inactive)]

Landed for 2.8

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/16608/
Subject: LU-7196 kernel: kernel update RHEL 6.7 [2.6.32-573.7.1.el6]
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: e72c1505dfeb9cd2a6581a2752c5a21ae61e9389

[Gerrit Updater]

Bob Glossman ([e-mail]) uploaded a new patch: http://review.whamcloud.com/16608
Subject: LU-7196 kernel: kernel update RHEL 6.7 [2.6.32-573.7.1.el6]
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: df9ed736ded7bd91d19706e49111f47547b01ca8