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Posted to users@trafficserver.apache.org by shirish <sh...@gmail.com> on 2010/04/28 11:36:23 UTC
Segmentation fault in using INKCacheRead
Hello,
I am writing some plugin. The handler has the events
INK_EVENT_CACHE_LOOK_UP
INK_EVENT_CACHE_READ
the cache read event calls a function
cache_read(INKCont contp, INKEvent event, void *edata);
in which I try to use the INKCacheRead function in the following way
INKHttpTxn txnp = (INKHttpTxn) edata;
void *key=0;
int keysize=0;
INKCacheKeyGet(txnp, &key, &keysize);
INKCacheRead(contp, key);
The INKCacheRead yields seg fault. The stack trace of the same follows
NOTE: Traffic Server received Sig 11: Segmentation fault
traffic_server - STACK TRACE:
[0x6a5400]
traffic_server(INKCacheRead+0x160)[0x80f44f0]
traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
traffic_server(_ZN11HttpCacheSM9open_readEP3URLP7HTTPHdrP21CacheLookupHttpConfigl+0x6a)[0x8158b4a]
traffic_server(_ZN6HttpSM24do_cache_lookup_and_readEv+0xe9)[0x816bba9]
traffic_server(_ZN6HttpSM14set_next_stateEv+0x430)[0x8180400]
traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
traffic_server(_ZN6HttpSM14set_next_stateEv+0x158)[0x8180128]
traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
traffic_server(_ZN6HttpSM32state_read_client_request_headerEiPv+0x69d)[0x8172c3d]
traffic_server(_ZN6HttpSM12main_handlerEiPv+0x11c)[0x81797bc]
traffic_server[0x82f11dd]
traffic_server(_ZN10NetHandler12mainNetEventEiP5Event+0x15c)[0x82e7bcc]
traffic_server(_ZN7EThread13process_eventEP5Eventi+0xa2)[0x83129c2]
traffic_server(_ZN7EThread7executeEv+0x473)[0x83132e3]
traffic_server[0x8310c0c]
/lib/tls/i686/cmov/libpthread.so.0(+0x596e)[0xb1f96e]
/lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
/lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
Segmentation fault
Can any point me to where is that I am going wrong.
Thanking you,
cheers
shirish
Re: Segmentation fault in using INKCacheRead
Posted by "Sandeep Kalidindi at PaGaLGuY.com" <sa...@pagalguy.com>.
Hmm i am a bit busy now.
Gimme some time. I will go thru some of the plugins and we shall discuss
this tomorrow afternoon.
Cheers,
Deepu.
On Wed, Apr 28, 2010 at 3:19 PM, shirish <sh...@gmail.com> wrote:
> Also, please point me If there is any implementation indicating the usage
> of INKCacheRead and INKCacheWrite along with INKVConnRead/Write. I have had
> a look at Null Transform plugin. But the use of Cache Read and Cache write
> is not clear. What and how do I handle after Cache Read/ Write returns a
> CacheVC in the void *data ?
>
> cheers,
> shirish
>
>
> On Wed, Apr 28, 2010 at 3:06 PM, shirish <sh...@gmail.com> wrote:
>
>> Hello,
>>
>> I am writing some plugin. The handler has the events
>> INK_EVENT_CACHE_LOOK_UP
>> INK_EVENT_CACHE_READ
>>
>> the cache read event calls a function
>> cache_read(INKCont contp, INKEvent event, void *edata);
>>
>> in which I try to use the INKCacheRead function in the following way
>>
>> INKHttpTxn txnp = (INKHttpTxn) edata;
>> void *key=0;
>> int keysize=0;
>>
>> INKCacheKeyGet(txnp, &key, &keysize);
>>
>> INKCacheRead(contp, key);
>>
>> The INKCacheRead yields seg fault. The stack trace of the same follows
>>
>>
>> NOTE: Traffic Server received Sig 11: Segmentation fault
>> traffic_server - STACK TRACE:
>> [0x6a5400]
>> traffic_server(INKCacheRead+0x160)[0x80f44f0]
>>
>> traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
>>
>> traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
>>
>> traffic_server(_ZN11HttpCacheSM9open_readEP3URLP7HTTPHdrP21CacheLookupHttpConfigl+0x6a)[0x8158b4a]
>> traffic_server(_ZN6HttpSM24do_cache_lookup_and_readEv+0xe9)[0x816bba9]
>> traffic_server(_ZN6HttpSM14set_next_stateEv+0x430)[0x8180400]
>>
>> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
>> traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
>> traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
>>
>> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
>> traffic_server(_ZN6HttpSM14set_next_stateEv+0x158)[0x8180128]
>>
>> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
>> traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
>> traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
>>
>> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
>>
>> traffic_server(_ZN6HttpSM32state_read_client_request_headerEiPv+0x69d)[0x8172c3d]
>> traffic_server(_ZN6HttpSM12main_handlerEiPv+0x11c)[0x81797bc]
>> traffic_server[0x82f11dd]
>> traffic_server(_ZN10NetHandler12mainNetEventEiP5Event+0x15c)[0x82e7bcc]
>> traffic_server(_ZN7EThread13process_eventEP5Eventi+0xa2)[0x83129c2]
>> traffic_server(_ZN7EThread7executeEv+0x473)[0x83132e3]
>> traffic_server[0x8310c0c]
>> /lib/tls/i686/cmov/libpthread.so.0(+0x596e)[0xb1f96e]
>> /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
>> /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
>> Segmentation fault
>>
>>
>> Can any point me to where is that I am going wrong.
>>
>> Thanking you,
>>
>> cheers
>> shirish
>>
>>
>>
>>
>>
>
Re: Segmentation fault in using INKCacheRead
Posted by shirish <sh...@gmail.com>.
Also, please point me If there is any implementation indicating the usage of
INKCacheRead and INKCacheWrite along with INKVConnRead/Write. I have had a
look at Null Transform plugin. But the use of Cache Read and Cache write is
not clear. What and how do I handle after Cache Read/ Write returns a
CacheVC in the void *data ?
cheers,
shirish
On Wed, Apr 28, 2010 at 3:06 PM, shirish <sh...@gmail.com> wrote:
> Hello,
>
> I am writing some plugin. The handler has the events
> INK_EVENT_CACHE_LOOK_UP
> INK_EVENT_CACHE_READ
>
> the cache read event calls a function
> cache_read(INKCont contp, INKEvent event, void *edata);
>
> in which I try to use the INKCacheRead function in the following way
>
> INKHttpTxn txnp = (INKHttpTxn) edata;
> void *key=0;
> int keysize=0;
>
> INKCacheKeyGet(txnp, &key, &keysize);
>
> INKCacheRead(contp, key);
>
> The INKCacheRead yields seg fault. The stack trace of the same follows
>
>
> NOTE: Traffic Server received Sig 11: Segmentation fault
> traffic_server - STACK TRACE:
> [0x6a5400]
> traffic_server(INKCacheRead+0x160)[0x80f44f0]
>
> traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
>
> traffic_server(_ZN14CacheProcessor9open_readEP12ContinuationP3URLP7HTTPHdrP21CacheLookupHttpConfigl13CacheFragType+0x156)[0x829b6a6]
>
> traffic_server(_ZN11HttpCacheSM9open_readEP3URLP7HTTPHdrP21CacheLookupHttpConfigl+0x6a)[0x8158b4a]
> traffic_server(_ZN6HttpSM24do_cache_lookup_and_readEv+0xe9)[0x816bba9]
> traffic_server(_ZN6HttpSM14set_next_stateEv+0x430)[0x8180400]
>
> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
> traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
> traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
>
> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
> traffic_server(_ZN6HttpSM14set_next_stateEv+0x158)[0x8180128]
>
> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
> traffic_server(_ZN6HttpSM17handle_api_returnEv+0x2ba)[0x817e91a]
> traffic_server(_ZN6HttpSM14set_next_stateEv+0x467)[0x8180437]
>
> traffic_server(_ZN6HttpSM32call_transact_and_set_next_stateEPFvPN12HttpTransact5StateEE+0xab)[0x81691cb]
>
> traffic_server(_ZN6HttpSM32state_read_client_request_headerEiPv+0x69d)[0x8172c3d]
> traffic_server(_ZN6HttpSM12main_handlerEiPv+0x11c)[0x81797bc]
> traffic_server[0x82f11dd]
> traffic_server(_ZN10NetHandler12mainNetEventEiP5Event+0x15c)[0x82e7bcc]
> traffic_server(_ZN7EThread13process_eventEP5Eventi+0xa2)[0x83129c2]
> traffic_server(_ZN7EThread7executeEv+0x473)[0x83132e3]
> traffic_server[0x8310c0c]
> /lib/tls/i686/cmov/libpthread.so.0(+0x596e)[0xb1f96e]
> /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
> /lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x5b49de]
> Segmentation fault
>
>
> Can any point me to where is that I am going wrong.
>
> Thanking you,
>
> cheers
> shirish
>
>
>
>
>