https://bugs.kde.org/show_bug.cgi?id=361810
Bug ID: 361810
Summary: valgrind duplicate stdin after fork
Product: valgrind
Version: 3.11.0
Platform: Fedora RPMs
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: memcheck
Assignee: jsew...@acm.org
Reporter: rjo...@redhat.com
Created attachment 98408
--> https://bugs.kde.org/attachment.cgi?id=98408&action=edit
forktest.c
It's probably best to just look at the attached C program and attached C script
(you have to use both). The script is a minimal reproducer from a much larger
program (libguestfs).
$ gcc -Wall -O2 forktest.c -o forktest
$ chmod +x forktest.sh
$ ./forktest.sh
mask 2 buf abc
mask 2 buf def
mask 2 buf ghi
mask 2 buf abc
mask 2 buf def
mask 2 buf ghi
mask 2 buf abc
mask 2 buf def
mask 2 buf ghi
[etc forever]
In other words, stdin of the program is duplicated somehow. It's presumably
something to do with the fork() operation.
valgrind-3.11.0-1.fc23.x86_64
glibc-2.22.90-36.fc24.x86_64
kernel 4.4.4-301.fc23.x86_64
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