Commit Graph

6 Commits

Author SHA1 Message Date
Michal Marek
632fb7b463 testsuite: Fix uname() during glibc startup
In a specific configuration (chroot with the linux32 personality), the
modprobe_install_cmd_loop test failed, because the bash process handling
the install command segfaulted. The backtrace showed a uname() call
during libpthread initialization, at which point the environ pointer
hadn't been initialized yet:

	Program terminated with signal SIGSEGV, Segmentation fault.
	#0  0x080c1591 in getenv (name=<optimized out>,
	    name@entry=0xf775f850 "TESTSUITE_UNAME_R") at getenv.c:81
	81	      for (i = 0, len = strlen (name); environ[i]; i++)
	(gdb) bt
	#0  0x080c1591 in getenv (name=<optimized out>,
	    name@entry=0xf775f850 "TESTSUITE_UNAME_R") at getenv.c:81
	#1  0xf775f754 in uname (u=u@entry=0xff946350) at testsuite/uname.c:32
	#2  0xf74ffc6c in is_smp_system ()
	    at ../nptl/sysdeps/unix/sysv/linux/i386/smp.h:39
	#3  __pthread_initialize_minimal_internal () at nptl-init.c:460
	#4  0xf74fe32c in _init () at ../sysdeps/i386/crti.S:74
	#5  0x00000000 in ?? ()
	(gdb) p environ
	$1 = (char **) 0x0

I don't know why it only happend in the chroot, but glibc can call its
own functions and impose any restrictions before main() is started, so
we have to adapt.

Also, do not return error if there is an environment, but the
environment variable is not found. If uname() is called by kmod, then
the respective test will simply fail later. If it's something else
calling uname(), then we do not want to disturb the program.
2014-03-06 23:09:56 -03:00
Lucas De Marchi
e6b0e49b4e Update copyright notices 2013-01-16 11:27:45 -02:00
Lucas De Marchi
e1b1ab24ab testsuite: re-license under LGPL 2012-07-10 10:31:57 -03:00
Lucas De Marchi
d3f159bbdd Use %zu for size_t
Remove warning on 32 bits systems.
2012-01-30 13:49:40 -02:00
Lucas De Marchi
e701e381fa testsuite: add GPL license 2012-01-26 17:02:05 -02:00
Lucas De Marchi
68cc449376 testsuite: trap calls to uname 2012-01-26 16:05:04 -02:00