SWE Causing IHS Web Server Crash (Doc ID 2133420.1)

Last updated on JUNE 07, 2022

Applies to:

Symptoms

On : 8.1.1.9 [23016] version, System Admin

ISSUE:
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Customer is having IBM HTTP Server 7.0.0.35 and SWSE installed on it. They are facing frequent crashes on production web servers and all the connected users were dropped and new sessions were not available on that serve until the web server bounce.

ERRORS:
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Below is the call stack of the crash, extracted from the core file.

sig_coredump() at 0x1003c458
SSstring::InitAllocBuffer(int)(??, ??) at 0xd5a0b990
SSstring::AssignCopy(int,const wchar_t*)(??, ??, ??) at 0xd5a0bc48
ssstring.SSstring::operator=(const wchar_t*)(??, ??) at 0xd5a0c3cc
ssstring.SSstring::SSstring(const wchar_t*)(??, ??) at 0xd5a0c340
CSSUModel::InvokeSrvcMethod(const wchar_t*,const wchar_t*,const CCFPropertySet&,CCFPropertySet&,const wchar_t*,CSSUObject*,long,const wchar_t*,const wchar_t*,const wchar_t*,const wchar_t*,int,int)(??, ??, ??, ??, ??, ??, ??, ??) at 0xd38a9db0
CSSSWSESessionUtils::InvokeSrvcMethod(CSSSWSEApp&,const wchar_t*,const CCFPropertySet&,CCFPropertySet&,const SSstring&,CSSUObject*,long,const wchar_t*,const wchar_t*,const wchar_t*,const wchar_t*)(??, ??, ??, ??, ??, ??, ??, ??) at 0xd58de124
CSSSWSESessionState::DoWork(CSSSWSEContext&,CSSSWSEState::Tag&)(??, ??, ??) at 0xd593a478
CSSSWSERequestHandler::ProcessRequest(CSSSWSEContext&)(??, ??) at 0xd5940440
swe_service(??) at 0xd17317b4
ihs_run_handler() at 0x1003a5fc
ap_invoke_handler() at 0x10004a34
ap_process_request() at 0x10032300
ap_process_http_connection() at 0x10043610
ap_run_process_connection() at 0x100149a8
ap_process_connection() at 0x1001510c
process_socket() at 0x1000b8b8
worker_thread() at 0x1000b088
dummy_worker() at 0xd16ebeec

BUSINESS IMPACT
-----------------------
The issue has the following business impact:
Due to this issue, all the connected users on the web server were dropped and new sessions were not available on that serve until we bounced the web server.

Cause

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