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From: Test Rat <ttsestt@gmail.com>
To: Alexander Best <arundel@freebsd.org>
References: <20110812101627.GA1848@freebsd.org>
Date: Fri, 12 Aug 2011 17:15:02 +0400
In-Reply-To: <20110812101627.GA1848@freebsd.org> (Alexander Best's message of
	"Fri, 12 Aug 2011 10:16:27 +0000")
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Cc: freebsd-current@freebsd.org
Subject: Re: recent commit causes lock up
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Alexander Best <arundel@freebsd.org> writes:

> hi there,
>
> running r224715 i'm having no problems what so ever. after upgrading my kernel
> to r224784, i'm experiencing fatal lock ups, where only a hard reset will
> resolve the problem.
>
> the lock up happend two times while running chromium with only a decent number
> of tabs (~ 5). also the lock up occured only after ~ 5 minutes uptime and an
> uptime of chromium of only ~ 2 minutes.
>
> i've now reverted my kernel back to r224715 and everything's working again.

Do you use x11/nvidia-driver? In r224778 fget(9) KPI changed which broke
the port in src/nvidia_linux.c:linux_ioctl_nvidia(). It's probably only
called when using linuxolator, e.g. flash plugin. Try below workaround.

%%
--- src/nvidia_linux.c~
+++ src/nvidia_linux.c
@@ -26,6 +26,8 @@
 #include "machine/../linux32/linux32_proto.h"
 #endif
 
+#include <sys/capability.h>
+
 int linux_ioctl_nvidia(d_thread_t *, struct linux_ioctl_args *);
 
 int linux_ioctl_nvidia(
@@ -37,7 +39,7 @@ int linux_ioctl_nvidia(
     int error;
     u_long cmd;
 
-    if ((error = fget(td, args->fd, &fp)) != 0)
+    if ((error = fget(td, args->fd, CAP_IOCTL, &fp)) != 0)
         return error;
 
     cmd = args->cmd;
%%