inaddy@mylinux ~/Work/Kernel/Ubuntu/ubuntu-trusty master git tag
--contains d6cdcda08c712cae7f071866e7e2e331242d66c3
Ubuntu-3.13.0-60.99
Ubuntu-3.13.0-62.101
Ubuntu-3.13.0-62.102
Ubuntu-3.13.0-63.103
Ubuntu-3.13.0-64.104
Ubuntu-3.13.0-65.105
linux-image-generic | 3.13.0.24.28 | trusty
2nd verification:
https://bugs.launchpad.net/ubuntu/+source/libibverbs/+bug/1409904/comments/88
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https://bugs.launchpad.net/bugs/1443648
Title:
Kernel panics on iSER (iscsi over IB)
** Changed in: linux (Ubuntu Trusty)
Importance: Undecided = High
** Changed in: linux (Ubuntu)
Importance: High = Undecided
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https://bugs.launchpad.net/bugs/1443648
Title:
Verifying this right now, will share results soon.
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https://bugs.launchpad.net/bugs/1443648
Title:
Kernel panics on iSER (iscsi over IB) logouts
To manage notifications about this bug
I was able to verify that the new kernel fixes the issue:
root@dixie:~# uname -a
Linux dixie 3.13.0-62-generic #101-Ubuntu SMP Thu Jul 30 09:01:36 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
root@dixie:~# iscsiadm -m discovery --op=show --type sendtargets --portal
172.16.0.1 -I iser
** Attachment added: how-to-test-this.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1443648/+attachment/4443045/+files/how-to-test-this.txt
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+ Kamal
-Original Message-
From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of Brad
Figg
Sent: Wednesday, August 5, 2015 9:15 PM
To: Amir Vadai am...@mellanox.com
Subject: [Bug 1443648] Re: Kernel panics on iSER (iscsi over IB) logouts
Importance: High
This bug
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from
** Changed in: linux (Ubuntu Trusty)
Status: In Progress = Fix Committed
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Title:
Kernel panics on iSER (iscsi over IB) logouts
To manage
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) = Rafael David Tinoco (inaddy)
** Changed in: linux (Ubuntu)
Assignee: Rafael David Tinoco (inaddy) = (unassigned)
** Changed in: linux (Ubuntu Trusty)
Status: New = In Progress
** Changed in: linux (Ubuntu)
** Description changed:
+ SRU Justification:
+
+ Impact: After iSER was fixed by LP: #1409904 iscsi logouts cause panics.
+ Fix: Upstream development and devel bisection between 3.13 and 3.16.
+ Testcase: To use iSER and shut down the open-iscsi daemon (comment #8).
+
+ -
+
Proposed this fix to kernel team mailing list. Waiting on SRU.
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Title:
Kernel panics on iSER (iscsi over IB) logouts
To manage notifications
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Milestone: None = ubuntu-14.04.3
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Anyone can use the following PPA for hotfixed 3.13 (Trusty) kernel for
x86/x64:
https://launchpad.net/~inaddy/+archive/ubuntu/lp1443648-x64
And the following PPA for hotfixed kernel for arm64 (moonshot):
https://launchpad.net/~inaddy/+archive/ubuntu/lp1443648-arm64
These PPAs should be used
I have backported this fix to 3.13 (attached as a .patch for review if
anyone is willing to). Will do more tests, provide PPA for feedback for
hopefully will ask kernel team for SRU.
** Patch added:
0001-iSER-relies-on-refcounting-to-manage-iser-connection.patch
No Kernel panics for iSER Logout at this time (with this patch):
Linux dixie 3.13.11-ckt18-test01 #3 SMP Fri Apr 24 13:46:29 BRT 2015
x86_64 x86_64 x86_64 GNU/Linux
root@dixie:~# iscsiadm -m discovery --op=new --op=del --type sendtargets
--portal 172.16.0.1 -I iser
172.16.0.1:3260,1
** Tags added: patch
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Title:
Kernel panics on iSER (iscsi over IB) logouts
To manage notifications about this bug go to:
I'll be cherry-picking/backporting needed commits to 3.13 (hopefully
based on linux-stable git tree backports for 3.13 and/or 3.14). Will
maintain the case updated.
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After taking long time bisecting kernel (3.13 - 3.16) it came out that
the following commit (and its dependencies) are the ones that fixes the
issue:
commit b73c3adabdb1e2cb2f2c69bc3cbb9306aa3f9700
Author: Ariel Nahum ari...@mellanox.com
Date: Thu May 22 11:00:18 2014 +0300
IB/iser:
Probable commits that should be backported to 3.13:
c7ca4b69d9ac8ec22f7c6b37a1ab9ac910c726cd IB/iser: Bump version to 1.4
e7eeffa4a073c9d5a4b04a64c5efb1edcb89fb11 IB/iser: Add missing newlines to
logging messages
66d4e62d27875f3ae417e3b73396e290bb184b5c IB/iser: Fix a possible race in iser
I started bisecting this issue:
Upstream linux-stable git repo v3.13 - BISECT BAD (same issue as description)
Upstream linux-stable git repo v3.16 - BISECT GOOD (no issues after iSER
iscsi login and iscsid turned off)
It will take sometime but I'll come up with the commit that fixes this
This bug was discovered when fixing iSER enablement for Trusty in case:
https://bugs.launchpad.net/ubuntu/+source/open-iscsi/+bug/1401575
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Title:
Kernel 3.16 does not suffer from this issue. I'll cherry-pick fixes
either by checking git commits or bisecting development tree (since I
have a reproducer).
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** Changed in: linux (Ubuntu)
Importance: Undecided = High
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Title:
Kernel panics on iSER (iscsi over IB) logouts
To manage notifications
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