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From "Federico (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-740) zkpython leading to segfault on zookeeper
Date Fri, 23 Apr 2010 08:21:51 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860171#action_12860171
] 

Federico commented on ZOOKEEPER-740:
------------------------------------

I applied the patch but i've got again a segfault:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xad244b70 (LWP 18205)]
0x080611d5 in PyObject_Call (func=0x87fa8a0, arg=0xb53d9b4, kw=0x0) at ../Objects/abstract.c:2488
2488    ../Objects/abstract.c: No such file or directory.
        in ../Objects/abstract.c
(gdb) bt
#0  0x080611d5 in PyObject_Call (func=0x87fa8a0, arg=0xb53d9b4, kw=0x0) at ../Objects/abstract.c:2488
#1  0x080d6ef2 in PyEval_CallObjectWithKeywords (func=0x87fa8a0, arg=0xb53d9b4, kw=0x0) at
../Python/ceval.c:3575
#2  0x080612a0 in PyObject_CallObject (o=0x87fa8a0, a=0xb53d9b4) at ../Objects/abstract.c:2480
#3  0x0047afb2 in watcher_dispatch (zzh=0x8617038, type=-1, state=1, path=0x8631028 "", context=0x8617258)
at src/c/zookeeper.c:419
#4  0x00497559 in do_foreach_watcher (zh=0x8617038, type=-1, state=1, path=0x8631028 "", list=0x8a71088)
at src/zk_hashtable.c:275
#5  deliverWatchers (zh=0x8617038, type=-1, state=1, path=0x8631028 "", list=0x8a71088) at
src/zk_hashtable.c:317
#6  0x0048be3c in process_completions (zh=0x8617038) at src/zookeeper.c:1766
#7  0x0049806b in do_completion (v=0x8617038) at src/mt_adaptor.c:333
#8  0x0013380e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0x002578de in clone () from /lib/tls/i686/cmov/libc.so.6

I'm not sure it's resolved.

> zkpython leading to segfault on zookeeper
> -----------------------------------------
>
>                 Key: ZOOKEEPER-740
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-740
>             Project: Zookeeper
>          Issue Type: Bug
>    Affects Versions: 3.3.0
>            Reporter: Federico
>            Assignee: Henry Robinson
>            Priority: Critical
>             Fix For: 3.3.1, 3.4.0
>
>
> The program that we are implementing uses the python binding for zookeeper but sometimes
it crash with segfault; here is the bt from gdb:
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0xad244b70 (LWP 28216)]
> 0x080611d5 in PyObject_Call (func=0x862fab0, arg=0x8837194, kw=0x0)
>     at ../Objects/abstract.c:2488
> 2488    ../Objects/abstract.c: No such file or directory.
>         in ../Objects/abstract.c
> (gdb) bt
> #0  0x080611d5 in PyObject_Call (func=0x862fab0, arg=0x8837194, kw=0x0)
>     at ../Objects/abstract.c:2488
> #1  0x080d6ef2 in PyEval_CallObjectWithKeywords (func=0x862fab0,
>     arg=0x8837194, kw=0x0) at ../Python/ceval.c:3575
> #2  0x080612a0 in PyObject_CallObject (o=0x862fab0, a=0x8837194)
>     at ../Objects/abstract.c:2480
> #3  0x0047af42 in watcher_dispatch (zzh=0x86174e0, type=-1, state=1,
>     path=0x86337c8 "", context=0x8588660) at src/c/zookeeper.c:314
> #4  0x00496559 in do_foreach_watcher (zh=0x86174e0, type=-1, state=1,
>     path=0x86337c8 "", list=0xa5354140) at src/zk_hashtable.c:275
> #5  deliverWatchers (zh=0x86174e0, type=-1, state=1, path=0x86337c8 "",
>     list=0xa5354140) at src/zk_hashtable.c:317
> #6  0x0048ae3c in process_completions (zh=0x86174e0) at src/zookeeper.c:1766
> #7  0x0049706b in do_completion (v=0x86174e0) at src/mt_adaptor.c:333
> #8  0x0013380e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
> #9  0x002578de in clone () from /lib/tls/i686/cmov/libc.so.6

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