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https://issues.apache.org/jira/browse/TS-3894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945581#comment-14945581
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Susan Hinrichs edited comment on TS-3894 at 10/6/15 7:06 PM:
-------------------------------------------------------------
We have been running with this change in production starting 9/4/2015. Have
not seen this crash since.
The original crash stack was:
{code}
gdb) bt
#0 0x00000000005f5a45 in HttpSM::handle_server_setup_error
(this=0x2bada4297f70, event=105,
data=0x2bad410af588) at HttpSM.cc:5278
#1 0x00000000005e98f9 in HttpSM::state_read_server_response_header
(this=0x2bada4297f70,
event=105, data=0x2bad410af588) at HttpSM.cc:1824
#2 0x00000000005ec306 in HttpSM::main_handler (this=0x2bada4297f70, event=105,
data=0x2bad410af588) at HttpSM.cc:2619
#3 0x0000000000510de4 in Continuation::handleEvent (this=0x2bada4297f70,
event=105,
data=0x2bad410af588) at ../iocore/eventsystem/I_Continuation.h:145
#4 0x0000000000778965 in read_signal_and_update (event=105, vc=0x2bad410af470)
at UnixNetVConnection.cc:148
#5 0x000000000077bfdb in UnixNetVConnection::mainEvent (this=0x2bad410af470,
event=1,
e=0x17c5c90) at UnixNetVConnection.cc:1171
#6 0x0000000000510de4 in Continuation::handleEvent (this=0x2bad410af470,
event=1, data=0x17c5c90)
at ../iocore/eventsystem/I_Continuation.h:145
#7 0x0000000000772d47 in InactivityCop::check_inactivity (this=0x169b440,
event=2, e=0x17c5c90)
at UnixNet.cc:107
#8 0x0000000000510de4 in Continuation::handleEvent (this=0x169b440, event=2,
data=0x17c5c90)
at ../iocore/eventsystem/I_Continuation.h:145
#9 0x00000000007997ee in EThread::process_event (this=0x2baa860c4010,
e=0x17c5c90,
calling_code=2) at UnixEThread.cc:128
#10 0x0000000000799b09 in EThread::execute (this=0x2baa860c4010) at
UnixEThread.cc:207
#11 0x0000000000798d99 in spawn_thread_internal (a=0x1691510) at Thread.cc:85
#12 0x00002baa8491c9d1 in start_thread () from /lib64/libpthread.so.0
#13 0x00000039522e88fd in clone () from /lib64/libc.so.6
{code}
was (Author: shinrich):
We have been running with this change in production starting 9/4/2015. Have
not seen this crash since.
> Missing NULL checks in HttpSM::handle_server_setup_error
> --------------------------------------------------------
>
> Key: TS-3894
> URL: https://issues.apache.org/jira/browse/TS-3894
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP
> Reporter: Susan Hinrichs
> Assignee: Susan Hinrichs
> Fix For: 6.1.0
>
>
> In error cases, there may not be a consumer when expected. Missing NULL
> checks on the consumer variable c can result in crashes.
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