linux/arch/x86
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
..
boot x86, build: Pass in additional -mno-mmx, -mno-sse options 2013-12-09 15:52:39 -08:00
configs x86, defconfig: Add DEVTMPFS and DEVTMPFS_MOUNT to *86*_defconfig 2013-11-04 20:01:55 -08:00
crypto crypto: sha256_ssse3 - also test for BMI2 2013-10-07 14:17:10 +08:00
ia32 constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
include Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-12-04 21:45:21 -08:00
kernel x86/apic, doc: Justification for disabling IO APIC before Local APIC 2013-12-04 19:33:21 -08:00
kvm kvm: mmu: delay mmu audit activation 2013-11-20 11:12:56 +02:00
lguest lguest: fix GPF in guest when using gdb. 2013-09-06 08:09:28 +09:30
lib ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
math-emu
mm x86, mm: do not leak page->ptl for pmd page tables 2013-11-21 16:42:28 -08:00
net net: x86: bpf: don't forget to free sk_filter (v2) 2013-11-07 19:06:52 -05:00
oprofile perf: Fix arch_perf_out_copy_user default 2013-11-06 12:34:25 +01:00
pci ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node 2013-11-14 23:14:43 +01:00
platform 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
power
realmode x86, build: Pass in additional -mno-mmx, -mno-sse options 2013-12-09 15:52:39 -08:00
syscalls
tools Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-04 08:39:38 -07:00
um Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2013-11-19 11:42:32 -08:00
vdso seqcount: Add lockdep functionality to seqcount/seqlock structures 2013-11-06 12:40:26 +01:00
video
xen Features: 2013-11-15 13:34:37 +09:00
.gitignore
Kbuild
Kconfig Kconfig cleanups for v3.13 2013-11-15 14:05:15 -08:00
Kconfig.cpu
Kconfig.debug x86/efi: Add EFI framebuffer earlyprintk support 2013-10-28 18:09:58 +00:00
Makefile x86, build: Pass in additional -mno-mmx, -mno-sse options 2013-12-09 15:52:39 -08:00
Makefile_32.cpu
Makefile.um