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19ce7909ed
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Nicholas Piggin 19ce7909ed KVM: PPC: Book3S HV: trace_tlbie must not be called in realmode 
This crashes with a "Bad real address for load" attempting to load
from the vmalloc region in realmode (faulting address is in DAR).

  Oops: Bad interrupt in KVM entry/exit code, sig: 6 [#1]
  LE SMP NR_CPUS=2048 NUMA PowerNV
  CPU: 53 PID: 6582 Comm: qemu-system-ppc Not tainted 4.16.0-01530-g43d1859f0994
  NIP:  c0000000000155ac LR: c0000000000c2430 CTR: c000000000015580
  REGS: c000000fff76dd80 TRAP: 0200   Not tainted  (4.16.0-01530-g43d1859f0994)
  MSR:  9000000000201003 <SF,HV,ME,RI,LE>  CR: 48082222  XER: 00000000
  CFAR: 0000000102900ef0 DAR: d00017fffd941a28 DSISR: 00000040 SOFTE: 3
  NIP [c0000000000155ac] perf_trace_tlbie+0x2c/0x1a0
  LR [c0000000000c2430] do_tlbies+0x230/0x2f0

I suspect the reason is the per-cpu data is not in the linear chunk.
This could be restored if that was able to be fixed, but for now,
just remove the tracepoints.

Fixes: 0428491cba ("powerpc/mm: Trace tlbie(l) instructions")
Cc: stable@vger.kernel.org # v4.13+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-11 12:35:33 +10:00
..
alpha Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-04-02 21:22:12 -07:00
arc Merge branch 'akpm' (patches from Andrew) 2018-04-06 14:19:26 -07:00
arm Merge branch 'akpm' (patches from Andrew) 2018-04-06 14:19:26 -07:00
arm64 ARM: SoC platform updates for 4.17 2018-04-05 21:21:08 -07:00
c6x
h8300 h8300: remove extraneous __BIG_ENDIAN definition 2018-03-22 17:07:01 -07:00
hexagon
ia64 pci-v4.17-changes 2018-04-06 18:31:06 -07:00
m68k Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-04-05 20:33:38 -07:00
microblaze Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-04-02 21:22:12 -07:00
mips mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
nds32 nds32: To use the generic dump_stack() 2018-03-16 15:45:23 +08:00
nios2 mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
openrisc Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-04 15:19:26 -07:00
parisc mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
powerpc KVM: PPC: Book3S HV: trace_tlbie must not be called in realmode 2018-04-11 12:35:33 +10:00
riscv RISC-V changes for 4.17 2018-04-04 16:43:47 -07:00
s390 headers: untangle kmemleak.h from mm.h 2018-04-05 21:36:27 -07:00
sh mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
sparc pci-v4.17-changes 2018-04-06 18:31:06 -07:00
um mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff() 2018-04-02 20:16:11 +02:00
unicore32 mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
x86 Merge branch 'akpm' (patches from Andrew) 2018-04-06 14:19:26 -07:00
xtensa pci-v4.17-changes 2018-04-06 18:31:06 -07:00
.gitignore
Kconfig kbuild: remove incremental linking option 2018-03-26 02:01:19 +09:00