On Tue, 10 Nov 2009, John Baldwin wrote:
On Tuesday 10 November 2009 4:45:03 pm Gavin Atkinson wrote:
I managed to get a panic when running wpa_supplicant:
System call ioctl returning with the following locks held:
exclusive sleep mutex an0 (network driver) r=0 (0xc58fc180) locked @
/usr/src/sys/dev/an/if_an.c:2341
panic: witness_warn
This seems to fix that:
--- /usr/src/sys/dev/an/if_an.c.orig 2009-11-10 19:26:21.000000000
+0000
+++ /usr/src/sys/dev/an/if_an.c 2009-11-10 19:27:24.000000000 +0000
@@ -2570,6 +2570,9 @@
an_setdef(sc, &sc->areq);
AN_UNLOCK(sc);
break;
+ default:
+ AN_UNLOCK(sc);
+ break;
}
/*
Ok, thanks. Sadly the ioctl handling probably needs a bit more work since it
calls copyin() while holding the an(4) mutex, but I will leave that for
another day.
It actually appears that the above panic is not something that has been
introduced with your patch - I can reproduce it on a vanilla system.
The above patch fixes it in the original code too.
Gavin
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "[email protected]"
