RE: Issue with Bash

[Rishita Saha16]

   Hi Clement,

   We have given it a try after applying the patches that you are
   referring to. We are still seeing the core dump.

   Regards,
   Rishita

     ----- Original message -----
     From: "CHIGOT, CLEMENT" <clement.chigot@atos.net>
     To: Rishita Saha16 <risaha16@in.ibm.com>, "bug-bash@gnu.org"
     <bug-bash@gnu.org>
     Cc:
     Subject: [EXTERNAL] Re: Issue with Bash
     Date: Thu, Jul 9, 2020 7:46 PM

   Hi Rishita,
   Could you try with BullFreeware's version, which have a slightly higher
   version (5.0.11 instead of 5.0) ?

   You can find it at [1]http://www.bullfreeware.com/pkg?id=5740.



   If it's not working, I'll check what's wrong.



   Clément


       _______________________________________________________________

   From: bug-bash <bug-bash-bounces+clement.chigot=atos.net@gnu.org> on
   behalf of Rishita Saha16 <risaha16@in.ibm.com>
   Sent: Thursday, July 9, 2020 11:17 AM
   To: bug-bash@gnu.org <bug-bash@gnu.org>
   Subject: Issue with Bash

   Caution! External email. Do not open attachments or click links, unless
   this email comes from a known sender and you know the content is safe.
      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][2]https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2
   Fpublic.dhe.ibm.com%2Faix%2FfreeSoftware%2Faixtoolbox%2FSPECS%2Fbash-5&
   amp;data=02%7C01%7Cclement.chigot%40atos.net%7C2310b33a682446f8ff2108d8
   2409a6ef%7C33440fc6b7c7412cbb730e70b0198d5a%7C0%7C1%7C63729897115801599
   1&amp;sdata=kVr8cM1wtAs00LdGp11Sjz1Mo8wuvdTwJ0ZQD4hP%2B5g%3D&amp;reserv
   ed=0.
      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
      #7  0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #8  0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #9  0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #10 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #11 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #12 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #13 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #14 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #15 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #16 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #17 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #18 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #19 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #20 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #21 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #22 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #23 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #24 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #25 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #26 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #27 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #28 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #29 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #30 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #31 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #32 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #33 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #34 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #35 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #36 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #37 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #38 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #39 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      #40 0x00000001000aef80 in rl_deprep_terminal () at rltty.c:713
      #41 0x000000010002cf38 in rl_cleanup_after_signal () at
   signals.c:559
      #42 0x000000010002d500 in _rl_handle_signal (sig=268438344) at
      signals.c:249
      From the stack trace , it looks like bash is looping in a code that
   is
      setting terminal attributes in response to a signal, and dumps core
      once it runs out of stack.
      Any insights will be greatly helpful.
      Thanks and Regards
      Rishita Saha
   References
      1.
   [3]https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpu
   blic.dhe.ibm.com%2Faix%2FfreeSoftware%2Faixtoolbox%2FSPECS%2Fbash-5.0-1
   .spec&amp;data=02%7C01%7Cclement.chigot%40atos.net%7C2310b33a682446f8ff
   2108d82409a6ef%7C33440fc6b7c7412cbb730e70b0198d5a%7C0%7C1%7C63729897115
   8015991&amp;sdata=CJmbnCe8hEUbpVBeKDP%2FHWofB9PbIB2FEkDL3aBQeBA%3D&amp;
   reserved=0

References

   1. http://www.bullfreeware.com/pkg?id=6102
   2. 
https://eur01.safelinks.protection.outlook.com/?url=https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/SPECS/bash-5&data=02|01|clement.chigot@atos.net|2310b33a682446f8ff2108d82409a6ef|33440fc6b7c7412cbb730e70b0198d5a|0|1|637298971158015991&sdata=kVr8cM1wtAs00LdGp11Sjz1Mo8wuvdTwJ0ZQD4hP+5g=&reserved=0
   3. 
https://eur01.safelinks.protection.outlook.com/?url=https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/SPECS/bash-5.0-1.spec&data=02|01|clement.chigot@atos.net|2310b33a682446f8ff2108d82409a6ef|33440fc6b7c7412cbb730e70b0198d5a|0|1|637298971158015991&sdata=CJmbnCe8hEUbpVBeKDP/HWofB9PbIB2FEkDL3aBQeBA=&reserved=0