On 1/12/15 9:55 AM, [email protected] wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: x86_64
> OS: linux-gnu
> Compiler: gcc -I/home/abuild/rpmbuild/BUILD/bash-4.3
> -L/home/abuild/rpmbuild/BUILD/bash-4.3/../readline-6.3
> Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-suse-linux-gnu'
> -DCONF_VENDOR='suse' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL
> -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -fmessage-length=0
> -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector
> -funwind-tables -fasynchronous-unwind-tables -g -D_GNU_SOURCE
> -DRECYCLES_PIDS -Wall -g -Wuninitialized -Wextra -Wno-unprototyped-calls
> -Wno-switch-enum -Wno-unused-variable -Wno-unused-parameter -Wno-parentheses
> -ftree-loop-linear -pipe -DBNC382214=0 -DMUST_UNBLOCK_CHLD=1
> -DIMPORT_FUNCTIONS_DEF=0 -fprofile-use
> uname output: Linux d136 3.15.0-rc7-3-desktop #1 SMP PREEMPT Wed May 28
> 15:39:51 UTC 2014 (96f5b60) x86_64 x86_64 x86_64 GNU/Linux
> Machine Type: x86_64-suse-linux-gnu
>
> Bash Version: 4.3
> Patch Level: 33
> Release Status: release
>
> Description:
> Named fifo's causing hanging bash scripts like
>
> while IFS="|" read a b c ; do
> [shell code]
> done < <(shell code)
>
> can cause random hangs of the bash. An strace shows that the bash
> stays in wait4()
And when you attach to one of the hanging bash processes using gdb, what
does the stack traceback look like?
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
