Bug 1339214

Summary:	gfapi: set mem_acct for the variables created for upcall
Product:	[Community] GlusterFS	Reporter:	Soumya Koduri <skoduri>
Component:	libgfapi	Assignee:	Soumya Koduri <skoduri>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Sudhir D <sdharane>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	mainline	CC:	bugs
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	glusterfs-3.9.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1339226 1339228 (view as bug list)		Environment:
Last Closed:	2017-03-27 18:11:33 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1339226, 1339228

Description Soumya Koduri 2016-05-24 12:03:48 UTC

Description of problem:

In 'glfs_h_poll_cache_invalidation', we create a variable used 'up_inode_arg' using calloc (which will not set any mem_acct info for that variable). But in case of any errors during processing, we free it using 'GF_FREE' which makes the process crash with ESEGV which trying to access mem_acct variables.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. Create a 4 node ganesha cluster.
2. Create a volume and enable ganesha on it.
3. Mount the volume using vers=3 or 4 and create nested directories on the mount point.

4. Add bricks to the volume.

gluster volume add-brick newvolume replica 2   

5. start the rebalance process:

gluster v rebalance newvolume start force

6. Observe that while rebalance is in progress, ganesha process on the mounted node gets killed with seg fault error:


Actual results:
nfs-ganesha process crashes with ESEGV

Expected results:
nfs-ganesha process shouldn't crash.

Additional info:
This issue is originally reported in bug1339208

Comment 1 Vijay Bellur 2016-05-24 12:25:36 UTC

REVIEW: http://review.gluster.org/14521 (gfapi/upcall: Use GF_CALLOC while allocating variables) posted (#1) for review on master by soumya k (skoduri)

Comment 2 Vijay Bellur 2016-05-24 18:20:04 UTC

COMMIT: http://review.gluster.org/14521 committed in master by Niels de Vos (ndevos) 
------
commit ac2fa110ea489ca3d1b81e3872731fa1621a6e39
Author: Soumya Koduri <skoduri>
Date:   Tue May 24 17:42:06 2016 +0530

    gfapi/upcall: Use GF_CALLOC while allocating variables
    
    In 'glfs_h_poll_cache_invalidation', use GF_CALLOC to allocate
    'up_inode_arg' to set memory accounting which is used/referred when
    freeing the same variable in case of any erros.
    
    Change-Id: I365e114fa6d7abb292dacb6fc702128d046df8f8
    BUG: 1339214
    Signed-off-by: Soumya Koduri <skoduri>
    Reviewed-on: http://review.gluster.org/14521
    Reviewed-by: Kaleb KEITHLEY <kkeithle>
    Reviewed-by: jiffin tony Thottan <jthottan>
    Smoke: Gluster Build System <jenkins.com>
    NetBSD-regression: NetBSD Build System <jenkins.org>
    Reviewed-by: Niels de Vos <ndevos>
    CentOS-regression: Gluster Build System <jenkins.com>

Comment 3 Shyamsundar 2017-03-27 18:11:33 UTC

This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.9.0, please open a new bug report.

glusterfs-3.9.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution.

[1] http://lists.gluster.org/pipermail/gluster-users/2016-November/029281.html
[2] https://www.gluster.org/pipermail/gluster-users/