Red Hat Bugzilla – Bug 450514
times does not set errno adn return -1 for EFAULT
Last modified: 2008-06-09 07:49:27 EDT
Description of problem:
Calling function times with some invalid non-NULL pointer, does not return -1
and set errno to EFAULT.
Version-Release number of selected component (if applicable):
Compile attached C-code and run it.
Steps to Reproduce:
1. Compile attached C-file with "gcc times.c -o times -Wall"
2. run ./times
"times: -14 errno: 0"
times: -1 errno: 14
It seams, that the wrapper for the times-syscall passes the return value of the
kernel directly to the caller instead of testing for an error.
Created attachment 308676 [details]
C code to demonstrate bug.
That's because kernel returns the same return value when the argument is valid,
but clock_t is -14L. rawhide glibc has more complicated wrapper that will
segfault if the argument is invalid. No matter what, relying on -1/EFAULT is