Bug 1307035 - tgtd crash detected via abrtd
Summary: tgtd crash detected via abrtd
Keywords:
Status: CLOSED NEXTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: scsi-target-utils
Version: 6.7
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Andy Grover
QA Contact: Martin Hoyer
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-02-12 14:20 UTC by michal novacek
Modified: 2016-03-14 18:12 UTC (History)
6 users (show)

Fixed In Version: scsi-target-utils-1.0.24-18.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-03-14 18:12:54 UTC
Target Upstream Version:

Attachments (Terms of Use)
sosreport from abrtd (733.89 KB, text/plain)
2016-02-12 14:22 UTC, michal novacek 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Description michal novacek 2016-02-12 14:20:12 UTC 
Description of problem:
tgtd daemon crasheshes from time to time. We are having workaround for that
which starts it again once it is detected but it sometimes times out after
120s. 

We use tgtd to serve as a target host of about 300 hundreds of lvs from remotely
connected disk array on a machine that has 250GB of ram.

Version-Release number of selected component (if applicable):
scsi-target-utils-1.0.24-16.el6.x86_64
2.6.32-573.8.1.el6.x86_64

How reproducible: randomly about once in a three weeks

Steps to Reproduce:
1. tgtd crashes in normal operation and takes much longer to start then (sometimes over two minutes)

Actual results: random crashes from time to time, longer start time than before 6.7

Expected results: no random crashes, short start time
Comment 2 michal novacek 2016-02-12 14:22:04 UTC 
Created attachment 1123512 [details]
sosreport from abrtd
Comment 3 Chris Leech 2016-02-12 18:03:13 UTC 
# from the sosreport
segfault at 1e4fdc0 ip 0000000000409bb0 sp 00007ffdbdae3fc0 error 4 in tgtd[400000+3e000]

# addr2line -e `which tgtd` 409bb0
/usr/src/debug/fujita-tgt-e039354/usr/iscsi/target.c:410

which is a list_for_each_entry_safe loop in iscsi_target_destroy()
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