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Cisco Bug: CSCuo46868 - FD leak on bcdl2_show_ltrace on issuing show tech bcdlv2

Last Modified

Feb 13, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.1.3.BASE

Description (partial)

Symptom:
On CRS MC 8+1 after capturing "sh tech bcdlv2" there was leak in file descriptors visible via logs like:
Process bcdl2_show_ltrace, pid 50651354 is using 1023 file descriptors out of a max of 1023. Critical limit (95%) crossed.
followed by dump capture on the process:
OS-DUMPER-7-DUMP_REQUEST : Dump request for process pkg/bin/bcdl2_show_ltrace
which in fact was not collected:
%OS-DUMPER-6-SYSMGR_CORE_OPTIONS_FAIL : Failed to get process core options from the process init/startup file. Error(1132268544): 'Subsystem(1786)' detected the 'warning' condition 'Code(6)'. Default options will be used.
%OS-DUMPER-7-DUMP_ATTRIBUTE : Dump request with attribute 7 for process pkg/bin/bcdl2_show_ltrace
%OS-DUMPER-4-DEVCTL_FAILED : Devctl Code: 1091569665 failed. Error: No such process
%OS-DUMPER-4-CORE_INFO : Core for pid = 50651354 (pkg/bin/bcdl2_show_ltrace) requested by pkg/bin/ksh@node7_RP0_CPU0
%OS-LIBDLLMGR-4-SYSCALL : devctl_pagedata_with_dllmgr_text_segment: devctl(null-option)(): No such process  : pkg/bin/dumper : (PID=32794) :  -Traceback= 9dd0374 421ede9 4213fe3 42150b0 421387b 9acc070
%OS-DUMPER-7-GET_PAGEDATA_FAILED : devctl DCMD_PROC_PAGEDATA failed, Error: No such process
%OS-DUMPER-3-GET_MAPPING_INFO_FAILED : Core dump failed for pkg/bin/bcdl2_show_ltrace in getting map info. Error: 'DUMPER' detected the 'fatal' condition 'error mapping target process memory information': No such file or directory
%OS-DUMPER-7-DUMP_CORE_FAILURE : Core dump failed: Could not create core

Conditions:
Execution of "sh tech bcdlv2" .Observed only on CRS MC. Applicable to all IOS XR platforms, since 4.3.0 release
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