r223378 panic [Re: sparc64 r228561 panic: kmem_suballoc: bad status return of 3]

[Anton Shterenlikht]

On Fri, Dec 16, 2011 at 05:10:31PM +0100, Marius Strobl wrote:
> On Fri, Dec 16, 2011 at 11:19:22AM +0000, Anton Shterenlikht wrote:
> > On Fri, Dec 16, 2011 at 11:37:20AM +0100, Marius Strobl wrote:
> > > On Fri, Dec 16, 2011 at 08:40:48AM +0000, Anton Shterenlikht wrote:
> > > > Updating from r216048 to r228561 on sparc64,
> > > > with sys/conf/newvers.sh changed to REVISION="9.9".
> > > > 
> > > > Trinscribed by hand:
> > > > 
> > > > FreeBSD 9.9-CURRENT #3 r228561M:
> > > > 
> > > > panic: kmem_suballoc: bad status return of 3
> > > > KDB: enter: panic
> > > > [ thread pid 0 tid 0 ]
> > > > Stopped at 0x02937e0:   ta    %xcc,1
> > > > db>
> > > > 
> > > > The keyboard froze, couldn't get a bt,
> > > > required a cold reboot.
> > > > 
> > > > My /etc/make.conf and kernel config files are below.
> > > > 
> > > > Any advice?
> > > > 
> > > 
> > > Hrm, doesn't look like I can reproduce this. What machine model is
> > > that and how much RAM does it have?
> > 
> > >From dmesg:
> > 
> > real memory  = 2147483648 (2048 MB)
> > avail memory = 2079449088 (1983 MB)
> > cpu0: Sun Microsystems UltraSparc-IIIi Processor (1503.00 MHz CPU)
> > 
> > > Do you use any loader tuneables?
> > 
> > I don't think so. You mean like /boot/loader.conf?
> > I haven't got this file at all.
> > 
> 
> Even with a Blade 1500, which is the closest match to your machine
> that I have, and a kernel built with your configuration file I can't
> reproduce this using r228583. I'd suggest to test with a kernel built
> using an empty object directory and without any local modifications.
> If that still doesn't solve the problem given that there isn't even
> a backtrace I just can suggest to do a binary search for the offending
> commit, probably accounting especially for the changes to the VM
> within the window of revisions in question.

It took a while.

223377 - ok
223378 - panic

# svn up -r 223378
Updating '.':
U    sys/sparc64/include/tsb.h
U    sys/sparc64/include/vmparam.h
Updated to revision 223378.

# svn diff -c 223378
Index: sys/sparc64/include/tsb.h
===================================================================
--- sys/sparc64/include/tsb.h	(revision 223377)
+++ sys/sparc64/include/tsb.h	(revision 223378)
@@ -50,7 +50,6 @@
 extern vm_size_t tsb_kernel_mask;
 extern vm_size_t tsb_kernel_size;
 extern vm_paddr_t tsb_kernel_phys;
-extern u_int tsb_kernel_ldd_phys;
 
 static __inline struct tte *
 tsb_vpntobucket(pmap_t pm, vm_offset_t vpn)
Index: sys/sparc64/include/vmparam.h
===================================================================
--- sys/sparc64/include/vmparam.h	(revision 223377)
+++ sys/sparc64/include/vmparam.h	(revision 223378)
@@ -218,7 +218,7 @@
  * is the total KVA space allocated for kmem_map.
  */
 #ifndef VM_KMEM_SIZE_SCALE
-#define	VM_KMEM_SIZE_SCALE	(3)
+#define	VM_KMEM_SIZE_SCALE	(tsb_kernel_ldd_phys == 0 ? 3 : 1)
 #endif
 
 /*
@@ -238,6 +238,7 @@
 
 #define	UMA_MD_SMALL_ALLOC
 
+extern u_int tsb_kernel_ldd_phys;
 extern vm_offset_t vm_max_kernel_address;
 
 /*

Many thanks
Anton

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423