[PATCH 2/2] unwind: relax the pass condition of strace-k.test test case

Dmitry V. Levin ldv at altlinux.org
Fri Jun 13 16:25:22 UTC 2014

On Thu, Jun 12, 2014 at 03:44:54AM +0900, Masatake YAMATO wrote:
> strace-k.test is failed on i386 GNU/Linux. I inspect the reason and it
> seems that libunwind does not have enough ability to unwinding the
> stack when pc is at [vdso].  However, I think stacktrace feature is
> still useful even on i386 GNU/Linux. So this patch relaxes the pass
> condition of strace-k.test test case.

Unfortunately, this relaxation seems to be insufficient.
The only x86 GNU/Linux instance I've seen where strace-k.test fails is
i686 Fedora rawhide:

(built from https://sourceforge.net/p/strace/code/ci/ldv/unwind/~/log/)

tests$ ../strace -e getpid -k ./stack-fcall
getpid()                                = 3372
 > [vdso](+0x0) [0x430]
 > /usr/lib/libc-2.19.90.so(__libc_start_main+0xde) [0x17e8e]
 > /builddir/build/BUILD/strace-4.9/tests/stack-fcall(_start+0x21) [0x35c]
+++ exited with 0 +++

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