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Cisco Bug: CSCvh65840 - tsh crash after connected application sends SIGQUIT

Last Modified

Aug 19, 2019

Products (1)

  • Cisco Telepresence Integrator C Series

Known Affected Releases

unspecified

Description (partial)

Symptom:
Codec (Endpoint) Crash in tshell, the terminal application used for console and ssh sessions.

Conditions:
>> Due to TSH service Crash.
>> We should be seeing below in the Crash.log:

2018-01-12 00:08:08 Reporting crash in "/bin/tsh --no-readline"
2018-01-12 00:08:08 Saving core dump to /mnt/base/active/acrcore
2018-01-12 00:08:08 Core dump file written to /mnt/base/active/acrcore (1.1856 MB)
2018-01-12 00:08:08 Analysing core dump file: "/mnt/base/active/acrcore"
Threads: 1
Signal: SIGQUIT (3)
Signalled thread (LWP 1545, tsh)
#0  PC 0x000001fff7811600 in (/lib/libc-2.24.so) sigprocmask() + 0x0000000000000090
#1  PC 0x000001fff7eab678 in (/lib/libreadline.so.5.2) rl_free_line_state() + 0x00000000000001e0
#2  PC 0x000001fff7ee1000 in (Unknown) <unknown> (no unwind info found)() + 0x00000000000001e0
#3  PC 0x000001fff790c7f8 in (/lib/libc-2.24.so) __poll() + 0x00000000000000e0
#4  PC 0x0000015555554a70 in (/bin/tsh) read_and_handle_server_events.constprop.7() + 0x0000000000000280
#5  PC 0x0000015555554e80 in (/bin/tsh) read_user_input.constprop.6() + 0x0000000000000198
#6  PC 0x0000015555552e90 in (/bin/tsh) main() + 0x0000000000000548
#7  PC 0x000001fff77efb58 in (/lib/libc-2.24.so) __libc_start_main() + 0x0000000000000200

Thread 1 (LWP 1545, tsh)
#0  PC 0x000001fff7811600 in (/lib/libc-2.24.so) sigprocmask() + 0x0000000000000090
#1  PC 0x000001fff7eab678 in (/lib/libreadline.so.5.2) rl_free_line_state() + 0x00000000000001e0
#2  PC 0x000001fff7ee1000 in (Unknown) <unknown> (no unwind info found)() + 0x00000000000001e0
#3  PC 0x000001fff790c7f8 in (/lib/libc-2.24.so) __poll() + 0x00000000000000e0
#4  PC 0x0000015555554a70 in (/bin/tsh) read_and_handle_server_events.constprop.7() + 0x0000000000000280
#5  PC 0x0000015555554e80 in (/bin/tsh) read_user_input.constprop.6() + 0x0000000000000198
#6  PC 0x0000015555552e90 in (/bin/tsh) main() + 0x0000000000000548
#7  PC 0x000001fff77efb58 in (/lib/libc-2.24.so) __libc_start_main() + 0x0000000000000200
JSON output:

{
    "crashed_app": "/bin/tsh --no-readline",
    "signal": "SIGQUIT",
    "signum": 3,
    "threads":
    [
        {
            "thread_pid": "LWP 1545",
            "thread_num": 1,
            "thread_name": "tsh",
            "signalled_thread": "true",
            "call_stack":
            [
                "sigprocmask()",
                "rl_free_line_state()",
                "<unknown> (no unwind info found)()",
                "__poll()",
                "read_and_handle_server_events.constprop.7()",
                "read_user_input.constprop.6()",
                "main()",
                "__libc_start_main()"
            ]
        }
    ]
}
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