[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13239294#comment-13239294
]
Conan Wang commented on TS-1114:
get Hunk #1 FAILED at 1491 when try to backport, because TS-1084 also has a
simple modify to the code.
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13233161#comment-13233161
]
John Plevyak commented on TS-1114:
--
This patch has been committed to 3.0.x and master branches. Please verify and
mark this fixed if your testing confirms that the problem is gone.
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13233191#comment-13233191
]
John Plevyak commented on TS-1114:
--
Not in 3.0.x yet. Need to get agreement on a backport.
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13232196#comment-13232196
]
Zhao Yongming commented on TS-1114:
---
when we tracking down this issue, we have two directions:
Weijin is tracking on why the event is 8, where there should not be any event
that is 8 in the event system, and in other core dumps we are sure that the
event is not what it should be as a really event, it is shown as a random data,
that turns out to be something really interest: 1, it should be that the old
data(may or may not be the same event) is freed, and the event is not
canceled. 2, someone overwrite the data in this event. Weijin track down this
way and it turns out that the action cancel codes may rise some problem under
certain situation. He made a patch into our tree, and we applied it on half of
our servers, it runs without any crash for weeks.
At the same time, Koutai is working on make the vector write read more safe,
even in some very strange situation. And patched half of our servers, runs
without any crash too.
after carefully discuss, we conclude that Weijing's patch is what we need to
keep, and here comes the patch.
back to TS-857, when I look it back, there is some strange event in the back
trace, we have only , is that the same issue hare? where is the action canceled
without mutex protected? if we can consider TS-1114 a good fix, then we should
think about TS-857 a crash same as it.
so far, I am not sure how many crashes after patched with TS-1114, I just don't
get too much new back trace for this issue, TS-1114 may covered many strange
crashes as it will make system really strange.
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13232157#comment-13232157
]
John Plevyak commented on TS-1114:
--
Gads, yes, the write_vector needs to be protected by the vol mutex. This is a
serious oversight. Thanx for finding it.
This patch has to get in. Do you want to commit it or do you want me to do a
closer read then commit it?
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13232164#comment-13232164
]
Zhao Yongming commented on TS-1114:
---
yeah, we are confidential that we have fixed the crash, and we need your
review, that is what we are waiting for :D
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
Assignee: weijin
Fix For: 3.1.4
Attachments: cache_crash.diff
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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[jira] [Commented] (TS-1114) Crash report: HttpTransactCache::SelectFromAlternates
[
https://issues.apache.org/jira/browse/TS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13210040#comment-13210040
]
Zhao Yongming commented on TS-1114:
---
{code}
(gdb) f 1
#1 0x00644387 in CacheVC::openReadChooseWriter (this=0x2aaab80ff400,
event=8, e=value optimized out) at CacheRead.cc:341
(gdb) p vector
$19 = {magic = 0x0, data = {data = 0x2aaabcc8bc78, fast_data = {{alternate =
{m_alt = 0x0}}, {alternate = {m_alt = 0x0}}, {alternate = {
m_alt = 0x0}}, {alternate = {m_alt = 0x0}}}, default_val = 0xe85a58,
size = 8, pos = 7}, xcount = 8, vector_buf = {m_ptr = 0x0}}
(gdb)
{code}
Crash report: HttpTransactCache::SelectFromAlternates
-
Key: TS-1114
URL: https://issues.apache.org/jira/browse/TS-1114
Project: Traffic Server
Issue Type: Bug
Reporter: Zhao Yongming
it may or may not be the upstream issue, let us open it for tracking.
{code}
#0 0x0053075e in HttpTransactCache::SelectFromAlternates
(cache_vector=0x2aaab80ff500, client_request=0x2aaab80ff4c0,
http_config_params=0x2aaab547b800) at ../../proxy/hdrs/HTTP.h:1375
1375((int32_t *) val)[0] = m_alt-m_object_key[0];
{code}
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