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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-04-05 20:56:30 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-04-11 05:35:33 +0300 |
| commit | 19ce7909ed11c49f7eddf59e7f49cd3062bf83d5 (patch) | |
| tree | c60ca9685a81ead71396fe32f24e909b292e8d5b /CREDITS | |
| parent | 032900e62c176d75923baf95ad880e5d6ba71171 (diff) | |
| download | linux-19ce7909ed11c49f7eddf59e7f49cd3062bf83d5.tar.xz | |
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: 0428491cba92 ("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>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions