glebfm/strace
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix indefinite hang on no-mmu systems

Browse Source 
The ptrace setoptions code will fork a child which goes to sleep and
expects the parent to continue on to do tests.  Unfortunately, this
does not work on no-mmu systems as fork() is actually vfork() and any
vforked children will hang the parent until it exits or execs.

We might be able to make this test work on no-mmu systems with a bit
of work, but easier to just disable this for the release so it works
now.

* strace.c (test_ptrace_setoptions_for_all): Return if strace_vforked.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2012-04-05 01:52:25 -04:00 committed by Dmitry V. Levin
parent f36ede69f7
commit 7ff5ed9325
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
strace.c
View File

@ -1285,6 +1285,10 @@ test_ptrace_setoptions_for_all(void)
int pid;
int it_worked = 0;
/* this fork test doesn't work on no-mmu systems */
if (strace_vforked)
return;
pid = fork();
if (pid < 0)
perror_msg_and_die("fork");