linux/arch/x86/platform/uv
cpw 3eae49ca89 x86/UV: Fix NULL pointer dereference in uv_flush_tlb_others() if the 'nobau' boot option is used
The SGI UV tlb shootdown code panics the system with a NULL
pointer deference if 'nobau' is specified on the boot
commandline.

uv_flush_tlb_other() gets called for every flush, whether the
BAU is disabled or not.  It should not be keeping the s_enters
statistic while the BAU is disabled.

The panic occurs because during initialization
init_per_cpu_tunables() does not set the bcp->statp pointer if
'nobau' was specified.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: <stable@vger.kernel.org> # 3.12.x
Link: http://lkml.kernel.org/r/E1VnzBi-0005yF-MU@eag09.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-12-10 10:06:00 +01:00
..
bios_uv.c x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:30:35 -04:00
Makefile x86/UV: Move NMI support 2013-09-24 09:02:02 +02:00
tlb_uv.c x86/UV: Fix NULL pointer dereference in uv_flush_tlb_others() if the 'nobau' boot option is used 2013-12-10 10:06:00 +01:00
uv_irq.c Merge branch 'x86/cleanups' into x86/apic 2012-06-15 14:17:01 +02:00
uv_nmi.c x86/dumpstack: Fix printk_address for direct addresses 2013-11-12 21:06:06 +01:00
uv_sysfs.c driver-core: remove sysdev.h usage. 2011-12-21 16:26:03 -08:00
uv_time.c x86/platform/uv: Replace kmalloc() & memset with kzalloc() 2013-03-11 08:33:01 +01:00