On Sun, Jun 30, 2013 at 05:21:42PM +1000, Kubilay Kocak wrote:
> I'm seeing what I believe is related panic, reliably being generated by
> the Python regression test suite on a newly created FreeBSD 10-CURRENT
> buildbot.
>
> Symptoms first seen in an freebsd.org FTP snapshot dated "Thu May 30
> 20:01:46 UTC 2013" and also reproducible on a freshly updated r252400
>
> It is additionally reproducible after checking out pure upstream python
> sources, using the following steps:
>
> hg clone http://hg.python.org/cpython
> cd cpython && configure && make buildbottest
>
> An interesting possible correlation is that it seems to drop out
> during/around "test_socket"
>
Turns out the bug is quite funny ;)
Try this:
diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index 5d8e814..7a4db04 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -1764,8 +1764,8 @@ unp_externalize(struct mbuf *control, struct mbuf
**controlp, int flags)
}
for (i = 0; i < newfds; i++, fdp++) {
fde = &fdesc->fd_ofiles[*fdp];
- fde->fde_file = fdep[0]->fde_file;
- filecaps_move(&fdep[0]->fde_caps,
+ fde->fde_file = fdep[i]->fde_file;
+ filecaps_move(&fdep[i]->fde_caps,
&fde->fde_caps);
if ((flags & MSG_CMSG_CLOEXEC) != 0)
fde->fde_flags |= UF_EXCLOSE;
--
Mateusz Guzik <mjguzik gmail.com>
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