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Re: Issue with Bash

From: Chet Ramey
Subject: Re: Issue with Bash
Date: Thu, 9 Jul 2020 10:11:18 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 7/9/20 5:17 AM, Rishita Saha16 wrote:
>    Hi All,
>    We are using Bash 5.0 (64bit built using gcc ) in AIX 7.2 machine .This
>    is the spec file for reference -->
>    [1]https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/SPECS/bash-5.
>    0-1.spec.
>    We are seeing recurring bash core dumps on our servers. Leaving bash
>    sessions running on the servers for extended periods of time causes the
>    core dump (to recreate it, we left httpd running for about a week and a
>    half and encountered the core dump). I am hereby sharing the stack
>    trace of the core so generated.
>    #0  0x0900000000038d0c in __ioctl () from /usr/lib/libc.a(shr_64.o)
>    #1  0x09000000000392c8 in ioctl () from /usr/lib/libc.a(shr_64.o)
>    #2  0x09000000001c16f0 in tcsetattr () from /usr/lib/libc.a(shr_64.o)
>    #3  0x00000001000aec78 in set_tty_settings (tty=0, tiop=0x110013a90
>    <_rltty.bss_3_+64>) at rltty.c:466
>    #4  0x00000001000aef58 in rl_deprep_terminal () at rltty.c:704
>    #5  0x000000010002cf38 in rl_cleanup_after_signal () at signals.c:559
>    #6  0x000000010002d500 in _rl_handle_signal (sig=268438344) at
>    signals.c:249

Is there any way you can get a better idea of the actual signal delivered?
I suspect it's SIGTTOU, but it would be nice to be sure.


``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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