[LU-12101] lctl push causes a crash

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0
• Affects Version/s: Upstream
• Environment: Tested on SLE15 + Lustre 2.11, and drivers/staging.
• Severity: 3
• Assignee: Neil Brown
• Reporter: Neil Brown

Description

The command:

lctl --net tcp push

will cause a host with any active lustre connections to crash.  Code in ksocknal_push() has an incorrect termination condition and falls off the end of a linked lists, dereferencing an invalid pointer.

Precise results vary.  e.g. an LASSERT failure in ksocknal_connsock_addref(), or a NULL pointer dereference.

Comments

[Peter Jones]

Landed for 2.12.3

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/34499/
Subject: LU-12101 socklnd: fix infinite loop in ksocknal_push()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 2bf657c025a593270e0ccbe5e8e2299355f8cf92

[Gerrit Updater]

Neil Brown ([e-mail]) uploaded a new patch: https://review.whamcloud.com/34499
Subject: LU-12101 socklnd: fix infinite loop in ksocknal_push()
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 6c654b18919939e5ba35367e1ffdced74d371d0c